ive been enamored by some of the more simple text based widgets as of late (like simplistic text and clockr) and decided to try to make a widget based on that design for gmail. it will display who the email is from in a text cloud where the most recent email is the largest with each subsequent email getting smaller. if the email is unread it will be bold, if not then it will be regular text.
my background is in making java apps for the command line and of a more linear layout. so i am learning android dev as i go. because i am learning as i go i am starting at the most basic and moving on. i have a widget with a text box that displays '0'. (yay! i know impressive). now i want to make the text increment by 1 every 1 second. (yes not very useful, but very useful for learning.) i want to do this with an AlarmManager. does the AlarmManager have to be in a service, or an adjacent activity, or could there be a static AlarmManager in my AppWidgetProvider class? i found some examples but they are all pretty complex. i want to start super simple and move towards advanced.
after that then i will do the same increment except each number will be added as a new textbox and the previous will decrease in size. and so on and so on.
any help would be greatly appreciated.
-Tyler
so i understand that a Handler is better for these small tics of times but doing this project is a learning excersise. let me show you what i have so far.
AndroidManifest.xml
Code:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.tsb.gmailinboxtextcloud"
android:versionCode="1"
android:versionName="1.0">
<application android:label="GmailInboxTextCloud" android:icon="@drawable/gitc_icon">
<!-- Broadcast Receiver that will process AppWidget updates -->
<receiver android:name=".GITextCloud" android:label="@string/app_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<!--
<intent-filter>
<action android:name="INCREMENT_COUNT_UPDATE" />
<action android:name="RESET_COUNT_UPDATE" />
<action android:name="PAUSE_COUNT_UPDATE"/>
</intent-filter>
-->
<meta-data android:name="android.appwidget.provider" android:resource="@xml/gitc_widget"/>
</receiver>
</application>
<service android:enabled="true" android:name=".AlarmService" />
</manifest>
my widget class
GITextCloud.java
Code:
package com.tsb.gmailinboxtextcloud;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.widget.RemoteViews;
import android.widget.Toast;
public class GITextCloud extends AppWidgetProvider {
private int count = 0;
@Override
public void onEnabled(Context context) {
//super.onEnabled(context);
count = 0;
context.startService(new Intent(context, AlarmService.class));
Toast.makeText(context, "onEnabled() finished", Toast.LENGTH_LONG).show();
}
@Override
public void onDisabled(Context context) {
//super.onDisabled(context);
count = 0;
context.stopService(new Intent(context, AlarmService.class));
Toast.makeText(context, "onDisabled() finished", Toast.LENGTH_LONG).show();
}
@Override
public void onReceive(Context context, Intent intent) {
//super.onReceive(context, intent);
RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.main);
rv.setTextViewText(R.id.widget_textview, "[" + count + "]");
AppWidgetManager manager = AppWidgetManager.getInstance(context);
ComponentName cName = new ComponentName(context, GITextCloud.class);
manager.updateAppWidget(cName, rv);
count++;
}
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
}
}
my service that runs an AlarmManager
AlarmService.java
Code:
package com.tsb.gmailinboxtextcloud;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.IBinder;
import android.widget.Toast;
/**
* Created by IntelliJ IDEA.
* User: Tyler
* Date: 4/16/11
* Time: 6:34 PM
*/
public class AlarmService extends Service {
private AlarmManager am;
private PendingIntent pendingIntent;
// public static String INCREMENT_COUNT_UPDATE = "INCREMENT_COUNT_UPDATE";
// public static String RESET_COUNT_UPDATE = "RESET_COUNT_UPDATE";
// public static String PAUSE_COUNT_UPDATE = "PAUSE_COUNT_UPDATE";
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
Toast.makeText(this, "My Service Created", Toast.LENGTH_LONG).show();
am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
}
@Override
public void onDestroy() {
Toast.makeText(this, "My Service Stopped", Toast.LENGTH_LONG).show();
am.cancel(pendingIntent);
}
@Override
public void onStart(Intent intent, int startid) {
Toast.makeText(this, "My Service Started", Toast.LENGTH_LONG).show();
setRepeatingAlarm(GITextCloud.class);
}
public void setOneTimeAlarm(java.lang.Class<?> cls) {
Intent intent = new Intent(this, cls);
pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
am.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (5 * 1000), pendingIntent);
}
public void setRepeatingAlarm(java.lang.Class<?> cls) {
Intent intent = new Intent(this, cls);
pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), (5 * 1000), pendingIntent);
}
}
what ends up happening is that my widget just shows [0] in white and 60sp big. never changes. and my toasts in the service never show up on the screen. am i starting the service wrong?
Is this just a stupid question or does no one know the answer? Cause if no one knows then nvm, wrong place to ask...
Its from my damn phone!!!
I haven't messed too much with app widgets, but don't you have to set some sort of refresh time in your metadata?
http://developer.android.com/guide/topics/appwidgets/index.html
Gene Poole said:
I haven't messed too much with app widgets, but don't you have to set some sort of refresh time in your metadata?
http://developer.android.com/guide/topics/appwidgets/index.html
Click to expand...
Click to collapse
yep, that determines how often the ACTION_APPWIDGET_UPDATE intent gets sent.
my gitc_widget.xml
Code:
<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="146dip"
android:minHeight="72dip"
android:updatePeriodMillis="1000"
android:initialLayout="@layout/main">
</appwidget-provider>
buuut. after android 1.6 or maybe 1.5 that android:updatePeriodMillis tag defaults to 30minutes. which is why an AlarmManager must be used for anything less than 30min updates. and since i dont want to wait 30mins to know if my code works i need my service to start.
i have determined that my service never starts. it isnt shown in the running services on my android phone and the toasts from it never show. anyone know why the service isnt started?
As mentioned earlier, I don't know a lot about appwidgets, but they are incredibly difficult to debug and I've had to reboot the phone at times to get past bugs in my code, so don't be so sure that your service isn't running. First, I don't think AppServices show up in the "running services" tab, and second, I don't think toasts from a non-activity show up on the screen. I could be wrong about this, so don't take it as gospel. Try using Log() instead of Toast for debugging.
Also, I don't see anything in your code that sends an update to the appwidget. I think something in your service should eventually call GITextCloud.updateAppWidget().
Thanks for working with me. In my AlarmService class in the onStarted method i call the setRepeating() method that gets passed a class with wich it makes an intent that the AlarmManager should use to trigger the onRecieve() method in my GITextCloud class. I will look into the log(), thats a good idea. And i will be trying to setAction() on that intent and then specifically catch it in the onRecieve() method
Thanks for giving me something to think about
Its from my damn phone!!!
i made some edits and ran into a problem where my intent was caught be onReive() but the local variable called count never incremented... this is crazy! a block of code that would execute whenever a particular intent was recieved never did what i wanted:
count++;
refreshWidgets();
Toast.makeText(.... some indication this was done ...);
the toast was always displayed but the count never incremented. i thought the refreshWidgets method was bunk so i manually set the count in the method... everything was good... then i make a toast after the count++ to display count. count never incremented. well after messing around i found that i had count as a
private int count
i changed it to a
private static int count
and it worked! weird...
this is my final code that makes a number on a widget increment every couple of seconds. note: setting a repeating alarm with the AlarmManager for a small amount of time did not work. i had to make a nested one time alarm that kept rearming itself. and i got rid of the service cause some of the debuging tools in cm7 said it never started. cross that bridge when i get there....
Code:
package com.tsb.gmailinboxtextcloud;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.widget.RemoteViews;
import android.widget.Toast;
public class GITextCloud extends AppWidgetProvider {
private static int count = 0;
private static int widgetCount = 0;
public static final String INCREMENT_COUNT_UPDATE = "INCREMENT_COUNT_UPDATE";
@Override
public void onEnabled(Context context) {
super.onEnabled(context);
count = 0;
setOneTimeAlarm(this.getClass(), context);
}
@Override
public void onDisabled(Context context) {
super.onDisabled(context);
}
@Override
public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
if (intent.getAction().equals("android.appwidget.action.APPWIDGET_ENABLED")) {
} else if (intent.getAction().equals("android.appwidget.action.APPWIDGET_DISABLED")) {
} else if (intent.getAction().equals(INCREMENT_COUNT_UPDATE)) {
count++;
refreshViews(context);
Toast.makeText(context, "widget #" + widgetCount, Toast.LENGTH_SHORT).show();
if (widgetCount != 0) {
setOneTimeAlarm(this.getClass(), context);
}
} else {
//Toast.makeText(context, "count = " + count + " | " + intent.getAction(), Toast.LENGTH_LONG).show();
}
}
/** Called when the activity is first created. */
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
//super.onUpdate(context, appWidgetManager, appWidgetIds);
}
private void refreshViews(Context context) {
RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.main);
rv.setTextViewText(R.id.widget_textview, "" + count);
AppWidgetManager manager = AppWidgetManager.getInstance(context);
ComponentName cName = new ComponentName(context, GITextCloud.class);
widgetCount = manager.getAppWidgetIds(cName).length;
manager.updateAppWidget(cName, rv);
}
private void setOneTimeAlarm(java.lang.Class<?> cls, Context context) {
AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(context, cls);
intent.setAction(INCREMENT_COUNT_UPDATE);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_ONE_SHOT);
am.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (3 * 1000), pendingIntent);
}
}
Related
I am having trouble creating a webview app for my already mobile ready site.
I keep getting this error in the emulator:
The application window cleaning forums (process com.windowcleaningforums) has stopped unexpectadly
The app never actualy loads just goes straight to this.
Basically i already have my sites mobile ready and browsing to them on your mobile works fine, but would like to put these into apps.
With a back, forward and refresh button when hitting menu button on phone.
(I am not sure what i need to add these yet but any advice would be great)
My project is set as bellow
Application name: Window Cleaning Forums
Package name: com.windowcleaningforums
Create activity: windowcleaningforums
Mini SDK version: 4
windowcleaningforums.java
Code:
package com.windowcleaningforums;
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class windowcleaningforums extends Activity {
/** Called when the activity is first created. */
//@Override
private class HelloWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
mWebView.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
WebView mWebView;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mWebView = (WebView) findViewById(R.id.webView);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadUrl("http://www.windowcleaningforums.co.uk");
mWebView.setWebViewClient(new HelloWebViewClient());
}
}
Main.xml
Code:
<?xml version="1.0" encoding="utf-8"?>
<webView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/webView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
Manifest
Code:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.windowcleaningforums"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".windowcleaningforums"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-sdk android:minSdkVersion="4" />
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
I am very new and im not quite sure what is causing it any help would be great. Thanks
I get this if that is any help i am not sure what it means though.
[2011-01-12 22:35:07 - DeviceMonitor]Sending jdwp tracking request failed!
This is the log if that helps also i really could do with some help peeps, nobody seems to want to. I know i am new and prob asking stupid questions but how am i supposed to learn if i dont ask questions.
Hi cyberpedz,
Probably just a typo but in your main.xml the WebView tag should have a capital "W" like so:
<WebView xmlns:andro...
You did the right thing looking in the log. That's what helped to figure this one out: there was an exception stack trace in the log. (Keep an eye out for the "AndroidRuntime" tag)
Thanks i have changed that but no difference.
I do have a red dot over a hellowebview class though
When viewing windowcleaningforums.java and looking at the right in outline i have a read dot over hellowebviewclient
Could it be something to do with this bit of code?
Code:
public class windowcleaningforums extends Activity {
/** Called when the activity is first created. */
//@Override
private class HelloWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
Try moving the
Code:
//@Override
just before onCreate and uncomment it.
Also Java classes should start with a capital (public class Windowcleaningforum). Make sure you modify the Manifest accordingly.
Ok finally i have it working, it was me being blind i missed a webView now changed to Webview and all works thanks so much.
Now i am trying to get a loading progress bar or even better spinning circle.
What code would i need for this and where abouts in my java bellow would i fit it in?
Code:
package com.windowcleaningforums;
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class windowcleaningforums extends Activity {
/** Called when the activity is first created. */
//@Override
private class HelloWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
mWebView.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
WebView mWebView;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mWebView = (WebView) findViewById(R.id.WebView);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadUrl("http://www.windowcleaningforums.co.uk");
mWebView.setWebViewClient(new HelloWebViewClient());
}
}
Anyone know how to get the spinning circle while pages loads? and how to imput into my code above?
Would be a great help
Ok finally i have a running webview in the market what i would like to do now is add a soft menu for a back, refresh and forward button what code do i need and where would i put it in my java below?
Code:
package com.windowcleaningforums;
import android.app.Activity;
import android.os.Bundle;
import android.view.Window;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class windowcleaningforums extends Activity
{
final Activity activity = this;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
this.getWindow().requestFeature(Window.FEATURE_PROGRESS);
setContentView(R.layout.main);
WebView webView = (WebView) findViewById(R.id.WebView);
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress)
{
activity.setTitle(" Loading...");
activity.setProgress(progress * 100);
if(progress == 100)
activity.setTitle(R.string.app_name);
}
});
webView.setWebViewClient(new WebViewClient() {
@Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl)
{
// Handle the error
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
view.loadUrl(url);
return true;
}
});
webView.loadUrl("http://www.windowcleaningforums.co.uk");
}
}
So why is it no body wants to help is it the way i ask? is it that developers think they are above the noob? or you really cant b bothered!!
I have even offered to pay for help in the past yet nobody is interested maybe it is that no one really knows the answers.
cyberpedz said:
So why is it no body wants to help is it the way i ask? is it that developers think they are above the noob? or you really cant b bothered!!
I have even offered to pay for help in the past yet nobody is interested maybe it is that no one really knows the answers.
Click to expand...
Click to collapse
It's not that developers can't be bothered, but generally they will have other things to do than help out others. The thing is, you're asking on help for pretty basic stuff. This is something that you should know already, and if don't I suggest you should read through Android's developer website one more time and look at the API examples/demos too.
Hints for your problem; Add the buttons as a merge layout in your XML and then link them with your web view, or add them as menu options. Googling for both will surely give you enough results to get you on your way, these are pretty basic things you want to do after all.
Hi all, im having a go at developing a simple app. i have little experience with Java and Android development. i have a little test app at the moment and have created a new class, im trying to create a new instance of this class on a button click. it fails to do so, i cant for the life of me see why so.. can someone shed any light on this?
Thanks
Debuging this shows it hitting the "LocationFactory locationf = new LocationFactory();" line and throwing an exception-
"java.lang.NullPointerException"
Main
Code:
package com.example.testapp;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.view.Menu;
import android.view.View;
import android.widget.Toast;
import java.io.IOException;
public class MainActivity extends Activity {
private static final Context Context = null;
protected static final String TAG = null;
[user=439709]@override[/user]
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
[user=439709]@override[/user]
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public void mainButton(View view) throws IOException {
try {
LocationFactory locationf = new LocationFactory();
Toast.makeText(this, locationf.getAddress(),Toast.LENGTH_LONG).show();
} catch (Exception e)
{
Toast.makeText(this, e.toString(), Toast.LENGTH_LONG).show();
}
}
}
Class
Code:
package com.example.testapp;
import android.content.Context;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationManager;
import java.io.IOException;
import java.util.Locale;
import java.util.List;
public class LocationFactory
{
private static final Context Context = null;
Geocoder geocoder = new Geocoder(Context, Locale.getDefault());
LocationManager manager = (LocationManager) Context.getSystemService(android.content.Context.LOCATION_SERVICE);
public double Latitude = 0.0;
public double Longitude = 0.0;
public LocationFactory()
{
}
public String getAddress() throws IOException
{
String ReturnAddress = "";
String Address = "", City = "", Country = "";
List<Address> addresses = null;
if(manager.isProviderEnabled(LocationManager.GPS_PROVIDER))
{
// Use GPS Radio Location
Location GPSlocation = manager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
Latitude = GPSlocation.getLatitude();
Longitude = GPSlocation.getLongitude();
}
else
{
// Use Cell Tower Location
Location NETlocation = manager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
Latitude = NETlocation.getLatitude();
Longitude = NETlocation.getLongitude();
}
if(Latitude > 0 && Longitude > 0)
{
addresses = geocoder.getFromLocation(Latitude, Longitude, 1);
if(!addresses.isEmpty())
{
Address = addresses.get(0).getAddressLine(0);
City = addresses.get(0).getAddressLine(1);
Country = addresses.get(0).getAddressLine(2);
}
}
ReturnAddress = Address + " " + City + " " + Country;
return ReturnAddress;
}
}
I don't see anywhere in your code where you are calling the mainButton(View view) method. In the Android lifecycle, the onCreate method is the equivalent of a normal Java program's main() method, which means that code execution begins with the first line of onCreate(). Not knowing what you're trying to do, a good start would be to call your mainButton() method AFTER setContentView() in onCreate().
Side note: your mainButton() method has a View parameter that is never used. Is there a reason for that?
Android activity lifecycle: http://developer.android.com/reference/android/app/Activity.html#ActivityLifecycle
You have to use an intent on that button click, use the method onClickListener and define the intent in the androidmanifest.xml
e.g
Code:
Button button = (Button) findViewById(R.id.[B]button[/B]) // replace latter button with actual id defined in main xml.
button.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View arg0) {
// TODO Auto-generated method stub
startActivity(new Intent("[B]com.example.packagename.CLASSNAME[/B]")); // this should be your own package name.
}
});
Also define this in android manifest under the <application> and </application>
Code:
<activity
android:name=".[B]CLASSNAME[/B]"
android:label="@string/app_name"
>
<intent-filter>
<action android:name="[B]com.example.packagename.CLASSNAME[/B]" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
Change the values of BOLD text according to your own values.
I tried to help you as far as I understood your question. Please let me know if you face any problem I would be more than happy to help you. Rest I am also in the learning phase so you can always PM me if you face any problem.
Hit thanks if I have helped you in any way.
coolbud012 said:
You have to use an intent on that button click, use the method onClickListener and define the intent in the androidmanifest.xml
Click to expand...
Click to collapse
Nope! He didn't say that he wanted to launch a new Activity when the button is clicked. He wants to create a new instance of his LocationFactory Class.
jpepin said:
Nope! He didn't say that he wanted to launch a new Activity when the button is clicked. He wants to create a new instance of his LocationFactory Class.
Click to expand...
Click to collapse
Oops yeah right read that now...I thought he want to start an activity... Anyways tried to delete my reply but not getting an option to delete.
There are many flaws in his code. And the other thing is if its his first app and if he has low level of programming experience then according to me it would be a next to impossible app for him, as per his code and what he is trying to implement.
I think he should rather start up with small apps, understand things and then move on to complex apps.
P.S - its just my opinion
Click to expand...
Click to collapse
Agreed that he should start small...which is exactly why your suggestion for creating and handling Intents makes no sense. Before that, he should first understand the activity lifecycle. Until then, he can just stick to trivial single-activity apps to gain experience.
OP: This code should be placed in the onCreate method:
Code:
Button button = (Button) findViewById(R.id.your_button_ID_here)
button.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View arg0) {
mainButton(); // get rid of the View parameter in this method...it's not needed
}
});
This will cause a new instance of your LocationFactory to be created, and will also cause your Toast message to be displayed.
thanks for the replies. yes you are right in that i am inexperienced, but this is just a test app for me to play around with and learn on. i tend to learn better by doing rather than constantly reading. thanks for your suggestions ill look into them
osmorgan said:
thanks for the replies. yes you are right in that i am inexperienced, but this is just a test app for me to play around with and learn on. i tend to learn better by doing rather than constantly reading. thanks for your suggestions ill look into them
Click to expand...
Click to collapse
I also believe in the same, I also keep on doing experiments and testing things out.
What I would suggest is that start with a small app and understand the insights on how android works and all...
Thanks
Potential Solution
Alright, I think I've found your problem. Have a look at where you define your variables in your LocationManager class:
Code:
private static final Context Context = null;
Geocoder geocoder = new Geocoder(Context, Locale.getDefault());
LocationManager manager = (LocationManager) Context.getSystemService(android.content.Context.LOCATION_SERVICE);
This is your problem:
Code:
Context Context = null;
If your context is null, and you use it to create a geocoder and call Context.getSystemService, you'll hit a null pointer. You're trying to access an object (the Context) that doesn't even exist
I'd recommend you pass the context in the LocationManager constructor and then instantiate your objects there. That's standard java procedure.
Code:
private Context mContext = null;
Geocoder geocoder = null;
LocationManager manager = null;
public double Latitude = 0.0;
public double Longitude = 0.0;
public LocationFactory(Context context)
{
this.mContext = context;
this.geocoder = new Geocoder(context, Locale.getDefault());
this.manager = (LocationManager) Context.getSystemService(android.content.Context.LOCATION_SERVICE);
}
I also renamed Context to mContext - it's generally a good idea to keep the instance's name separate from the class name.
Try that - it should work. Please feel free to ask any more questions - this is how I learned, and I think it's the best way!
I am trying to get a value that user enters into a Dialog, using the recommended DialogFragment class for it, the Dialog constructs and runs fine, but I cannot return the value of the EditText parameter to the parent class, without get a Null pointer exception.
My DialogHost class, this constructs, returns and links the parent to its buttons.
Code:
package jo.app.co;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.LayoutInflater;
public class DialogHost extends DialogFragment {
public interface NoticeDialogListener {
public void onDialogPositiveClick(DialogFragment dialog);
public void onDialogNegativeClick(DialogFragment dialog);
}
NoticeDialogListener mListener;
[user=439709]@override[/user]
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mListener = (NoticeDialogListener) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString());
}
}
[user=439709]@override[/user]
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
LayoutInflater inflater = getActivity().getLayoutInflater();
builder.setView(inflater.inflate(R.layout.dialog_add, null))
.setPositiveButton("Save", new DialogInterface.OnClickListener() {
[user=439709]@override[/user]
public void onClick(DialogInterface dialog, int id) {
mListener.onDialogPositiveClick(DialogHost.this);
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
DialogHost.this.getDialog().cancel();
}
});
return builder.create();
}
}
My MainActivity
Code:
package jo.app.co;
import android.app.DialogFragment;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.widget.EditText;
public class MainActivity extends FragmentActivity implements DialogHost.NoticeDialogListener {
[user=439709]@override[/user]
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
showNoticeDialog();
}
public void showNoticeDialog() {
DialogFragment dialog = new DialogHost();
dialog.show(getFragmentManager(), "DialogHost");
}
[user=439709]@override[/user]
public void onDialogPositiveClick(DialogFragment dialog) {
EditText myText = (EditText) findViewById(R.id.item_added);
try {
Log.d ("IN TRY", myText.getText().toString());
}
catch (Exception e) {
Log.e ("IN CATCH", e.toString());
}
}
[user=439709]@override[/user]
public void onDialogNegativeClick(DialogFragment dialog) {
Log.d ("INMAIN", "REACHED NEG");
}
}
This is my layout for the add item dialog.
Code:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<EditText
android:id="@+id/item_added"
android:inputType="text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:layout_marginLeft="4dp"
android:layout_marginRight="4dp"
android:layout_marginBottom="4dp"
android:hint="@string/hint_add_item" />
</LinearLayout>
It's because in your main activity you are trying to call findViewById:
swapnilraj said:
Code:
[user=439709]@override[/user]
public void onDialogPositiveClick(DialogFragment dialog) {
EditText myText = (EditText) findViewById(R.id.item_added);
try {
Log.d ("IN TRY", myText.getText().toString());
}
catch (Exception e) {
Log.e ("IN CATCH", e.toString());
}
}
Click to expand...
Click to collapse
This is not possible since the layout of the activity is not the one the dialog is using. There are multiple ways of doing this, for instance call findViewById in the dialog's onPositiveButtonListener and pass that value through your interface. It might be that you need to use the LayoutInflator in the onCreateDialog, set
LinearLayout linearl = (LinearLayout) inflater.inflate(...) and get the EditText from there. You then call setView(linearL) instead.
SimplicityApks said:
It's because in your main activity you are trying to call findViewById:
This is not possible since the layout of the activity is not the one the dialog is using. There are multiple ways of doing this, for instance call findViewById in the dialog's onPositiveButtonListener and pass that value through your interface. It might be that you need to use the LayoutInflator in the onCreateDialog, set
LinearLayout linearl = (LinearLayout) inflater.inflate(...) and get the EditText from there. You then call setView(linearL) instead.
Click to expand...
Click to collapse
I tried calling findViewById method in the onClick method in the Dialog class, but the function is not defined for a DialogInterface.onClickListner, I modified it to linearl method you told but I cannot get it to work either.
Could you make the changes in the 2 snippets above, it would be very helpful!
You'll have to setup listeners fo this and pass the string or whetever you want to pass to back to the activity which in its turn can handle it (do it by itself or pass this to another fragement).
Although not so much votes (0) the last answer here on stackoverflow has exeactly what you need.
I am pretty new to coding and app development. After searching around this is an easy thing to do. But I'm so stupid I can figure it out.
So what I need is to add a hardware function to a toggle switch. If you know how to add function to it. What I need is to send all audio through the earpiece when the toggle switch is on. Can you please put the whole code I need to do this? Please help me out!
Makbrar3215 said:
I am pretty new to coding and app development. After searching around this is an easy thing to do. But I'm so stupid I can figure it out.
So what I need is to add a hardware function to a toggle switch. If you know how to add function to it. What I need is to send all audio through the earpiece when the toggle switch is on. Can you please put the whole code I need to do this? Please help me out!
Click to expand...
Click to collapse
After you define your toggle switch in your xml, you can add a id and then you can
Code:
android:onClick="onSwitchClicked"
anywhere between the toggle block. This will say what to do when the toggle is clicked. Now put the below method in your class to control the toggle status:
Code:
public void onSwitchClicked(View view) {
switch(view.getId()){
case R.id.switch1:
if(switch1.isChecked()) {
// To do when 1st switch is on
}
else {
//To do when 1st switch is off
}
break;
case R.id.switch2:
if(switch2.isChecked()) {
//To do when 2nd switch is on
}
else {
//To do when 2nd switch is off
}
break;
}
}
You can extended to as many switches you want by providing different id's for the switch in xml and controlling that with case statements in the java.
And for controlling the audio, You can use audiomanager class
Code:
AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
am.setSpeakerphoneOn(true); //sets audio via speaker
am.setWiredHeadsetOn(true); //sets audio via headset
Problem!
vijai2011 said:
After you define your toggle switch in your xml, you can add a id and then you can
Code:
android:onClick="onSwitchClicked"
anywhere between the toggle block. This will say what to do when the toggle is clicked. Now put the below method in your class to control the toggle status:
Code:
public void onSwitchClicked(View view) {
switch(view.getId()){
case R.id.switch1:
if(switch1.isChecked()) {
// To do when 1st switch is on
}
else {
//To do when 1st switch is off
}
break;
case R.id.switch2:
if(switch2.isChecked()) {
//To do when 2nd switch is on
}
else {
//To do when 2nd switch is off
}
break;
}
}
You can extended to as many switches you want by providing different id's for the switch in xml and controlling that with case statements in the java.
And for controlling the audio, You can use audiomanager class
Code:
AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
am.setSpeakerphoneOn(true); //sets audio via speaker
am.setWiredHeadsetOn(true); //sets audio via headset
Click to expand...
Click to collapse
I did what you said. Yet I encountered a problem. Please see the attached screenshot.
When I hover over the X it says "Attribute name "public" associated with an element type "RadioButton" must be followed by the ' = '
character."
Where do I put the "="
Thanks by the way. You helped me out a lot!
you are mixing java with XML. Honestly, I suggest you start on a few beginner tutorials.
Just tell me what to do. I can't go through the guide. I need this app done by August 14.
Sent from my SGH-I337M using xda app-developers app
Bad Attitude to have. This isn't a "do my work for me" forum.
And like zalez was kind enough to point out, your putting java in xml. If you expect to make an app you need to read some beginner guides first.
you have almost a month to do it.
Thanks, I didn't mean to be rude. Where can I find the guide? :thumbup:
Sent from my SGH-I337M using xda app-developers app
Makbrar3215 said:
Thanks, I didn't mean to be rude. Where can I find the guide? :thumbup:
Sent from my SGH-I337M using xda app-developers app
Click to expand...
Click to collapse
http://developer.android.com/training/index.html
But you should probably start with generic Java 101 stuff
Set Switch status from incoming JSON data
Sorry to bump this thread after such a long time but I am facing a problem with switches myself and would appreciate some help. I have a JSON parser class which is retrieving data from a database. The retrieved info contains 'ID', 'name' and 'status' fields related to a device. I can display ID and name of each of the devices (there are several rows) using a listview but I don't know how to use the 'status' field value (it is either 1 or 0) to set an associated Switch component. I have to set the Switch associated with each listview item to ON if incoming 'status' value is 1 and set it OFF if 'status' is 0. I am lost on where to put the 'setChecked' method for every listview item. Here's the code of activity that shows these list items:
Code:
package com.iotautomationtech.androidapp;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.widget.ToggleButton;
import org.apache.http.NameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.CompoundButton;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Switch;
import android.widget.TextView;
public class AllDevicesActivity extends ListActivity {
Switch mySwitch = (Switch) findViewById(R.id.switchButton);
// Progress Dialog
private ProgressDialog pDialog;
// Creating JSON Parser object
JSONParser jParser = new JSONParser();
ArrayList<HashMap<String, String>> productsList;
// url to get all products list
private static String url_all_products = "external_link_removed";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_PRODUCTS = "devices";
private static final String TAG_PID = "id";
private static final String TAG_NAME = "name";
private static final String TAG_STATUS = "status";
// products JSONArray
JSONArray products = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.all_devices);
// Hashmap for ListView
productsList = new ArrayList<HashMap<String, String>>();
// Loading products in Background Thread
new LoadAllProducts().execute();
// Get listview
ListView lv = getListView();
// on seleting single product
// launching Edit Product Screen
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String pid = ((TextView) view.findViewById(R.id.pid)).getText()
.toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(),
EditDeviceActivity.class);
// sending pid to next activity
in.putExtra(TAG_PID, pid);
// starting new activity and expecting some response back
startActivityForResult(in, 100);
}
});
}
// Response from Edit Product Activity
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// if result code 100
if (resultCode == 100) {
// if result code 100 is received
// means user edited/deleted product
// reload this screen again
Intent intent = getIntent();
finish();
startActivity(intent);
}
}
/**
* Background Async Task to Load all product by making HTTP Request
* */
class LoadAllProducts extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(AllDevicesActivity.this);
pDialog.setMessage("Loading products. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting All products from url
* */
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
// getting JSON string from URL
JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
// Check your log cat for JSON reponse
Log.d("All Products: ", json.toString());
try {
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// products found
// Getting Array of Products
products = json.getJSONArray(TAG_PRODUCTS);
// looping through All Products
for (int i = 0; i < products.length(); i++) {
JSONObject c = products.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_PID);
String name = c.getString(TAG_NAME);
String status = c.getString(TAG_STATUS);
int toggleValue = Integer.parseInt(c.getString(TAG_STATUS));
boolean sBool = false;
if (toggleValue == 1) {
sBool = true;
}
if (status.equals("1")) {
status = "Status: ON";
}
else {
status = "Status: OFF";
}
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_PID, id);
map.put(TAG_NAME, name);
map.put(TAG_STATUS, status);
// adding HashList to ArrayList
productsList.add(map);
}
} else {
// no products found
// Launch Add New product Activity
Intent i = new Intent(getApplicationContext(),
NewDeviceActivity.class);
// Closing all previous activities
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
pDialog.dismiss();
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(
AllDevicesActivity.this, productsList,
R.layout.list_item, new String[] { TAG_PID,
TAG_NAME, TAG_STATUS},
new int[] { R.id.pid, R.id.name, R.id.status });
// updating listview
setListAdapter(adapter);
}
});
}
}
}
The XML file:
Code:
<RelativeLayout xmlns:android="schemas.android"
android:layout_width="fill_parent"
android:layout_height="65dip"
android:orientation="vertical"
android:layout_centerVertical="true"
>
<!-- Product id (pid) - will be HIDDEN - used to pass to other activity -->
<TextView
android:id="@+id/pid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone" />
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="6dip"
android:paddingLeft="6dip"
android:textSize="17dip"
android:textStyle="bold" />
<TextView
android:id="@+id/status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="6dip"
android:textSize="17dip"
android:layout_below="@+id/name"
/>
<Switch
android:id="@+id/switchButton"
android:layout_alignParentRight="true"
android:layout_width="125dp"
android:layout_height="wrap_content"
android:layout_marginRight="6dip"
android:layout_centerVertical="true"
android:textOff="OFF"
android:textOn="ON"
android:onClick="onSwitchClicked"
/>
</RelativeLayout>
I have reached thus far with the code: [attached-image]
Now I only have to set those Switches according to status values from database. I have tried putting the setChecked in doInBackground method and onPostExecute method but it doesn't work. Do I have to save all status values in an array and start a loop to set all Switches? Where would that code go?
ANY kind of help/guidance here is appreciated!
Hi there
I am new to this forum as an User, and I am also new to Java and Android, in developing ways. Sorry if there are any language or other mistakes.
So I am trying to make an app for a 'final' school project, which has the follow use:
The user sees an picture, a 'next' (and a 'finish') button. there are 11 pictures (user only sees one)(in the code there are for testing purposes only 3) when the user clicks 'next', the pic no. 2 appears, if he clicks another time next, the pictuer no. 3 appears and so on. (If he clicks finish, he should see a messages which shows him the text: "you've made it until pic xy" but i'm not so far yet.) I tried to do it with this code, but i failed.
Code:
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class VisusActivity extends Activity implements OnClickListener {
ImageView testanzeige;
Button next;
Integer[] bildanzeige = {
R.drawable.visustest,
R.drawable.v2,
R.drawable.v3
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_visus);
testanzeige = (ImageView)findViewById(R.id.testanzeige);
next = (Button)findViewById(R.id.next);
next.setOnClickListener(this);
next.setOnClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.visus, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onClick(View v) {
try {
//Toast.makeText(this, getResources().getDisplayMetrics().toString(), Toast.LENGTH_LONG).show();
testanzeige.setImageResource(bildanzeige[0]);
}catch(Exception e){
Toast.makeText(this, e.toString(), Toast.LENGTH_LONG).show();
}
};
public void onClick1(View v) {
try {
//Toast.makeText(this, getResources().getDisplayMetrics().toString(), Toast.LENGTH_LONG).show();
testanzeige.setImageResource(bildanzeige[2]);
}catch(Exception e){
Toast.makeText(this, e.toString(), Toast.LENGTH_LONG).show();
}
}
}
so what have I to do? no tutorial shows up exactly my problem ( I think it's such a basic thing everyone can do it^^)
thx
rodentooth
Anser
rodentooth said:
Hi there
I am new to this forum as an User, and I am also new to Java and Android, in developing ways. Sorry if there are any language or other mistakes.
So I am trying to make an app for a 'final' school project, which has the follow use:
The user sees an picture, a 'next' (and a 'finish') button. there are 11 pictures (user only sees one)(in the code there are for testing purposes only 3) when the user clicks 'next', the pic no. 2 appears, if he clicks another time next, the pictuer no. 3 appears and so on. (If he clicks finish, he should see a messages which shows him the text: "you've made it until pic xy" but i'm not so far yet.) I tried to do it with this code, but i failed.
Code:
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class VisusActivity extends Activity implements OnClickListener {
ImageView testanzeige;
Button next;
Integer[] bildanzeige = {
R.drawable.visustest,
R.drawable.v2,
R.drawable.v3
};
[user=439709]@override[/user]
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_visus);
testanzeige = (ImageView)findViewById(R.id.testanzeige);
next = (Button)findViewById(R.id.next);
next.setOnClickListener(this);
next.setOnClickListener(this);
}
[user=439709]@override[/user]
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.visus, menu);
return true;
}
[user=439709]@override[/user]
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
[user=439709]@override[/user]
public void onClick(View v) {
try {
//Toast.makeText(this, getResources().getDisplayMetrics().toString(), Toast.LENGTH_LONG).show();
testanzeige.setImageResource(bildanzeige[0]);
}catch(Exception e){
Toast.makeText(this, e.toString(), Toast.LENGTH_LONG).show();
}
};
public void onClick1(View v) {
try {
//Toast.makeText(this, getResources().getDisplayMetrics().toString(), Toast.LENGTH_LONG).show();
testanzeige.setImageResource(bildanzeige[2]);
}catch(Exception e){
Toast.makeText(this, e.toString(), Toast.LENGTH_LONG).show();
}
}
}
so what have I to do? no tutorial shows up exactly my problem ( I think it's such a basic thing everyone can do it^^)
thx
rodentooth
Click to expand...
Click to collapse
I have Make Fresh Java That will help You
Java
Code:
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
/**
* @author AndroidFire
*/
public class JumperPic extends Activity {
Button Nexty;
ImageView Imagey;
int i = 0;
[user=439709]@override[/user]
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.jumper);
Nexty = (Button)findViewById(R.id.nextey);
Imagey = (ImageView)findViewById(R.id.imagey);
Nexty.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View arg0) {
i++;
// To Set Your 1 Image Do it Thorough Layout
if (i == 1 ) {
//Your 2 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 2) {
//Your 3 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 3) {
//Your 4 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 4) {
// Your 5 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 5 ) {
//Your 6 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 6) {
//Your 7 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 7 ) {
//Your 8 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 8 ) {
//Your 9 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 9) {
//Your 10 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 10) {
//Image 11 Image
Nexty.setText("Finish");
Toast.makeText(getApplicationContext(), "Your Final Text", Toast.LENGTH_LONG).show();
}
}
});
}
}
Layout
Code:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="@+id/imagey"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/avatar_default_1" />
<Button
android:id="@+id/nextey"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
</LinearLayout>
In Your Java You can use Button.setOnClickLiestner(new View.OnClickLiestner It will bit easier than it because When We Implement Anything in Your Class we need delcare methods @override somethings you can use int to change Image
In My Java I have int values that will change every click on Button according to values it will change imageview you have write java that is tough from Me you can use my one it will bit easier Ok
Thank you new problem
Thank you so very much AndroidFire withoup you i've wouldn't made it this far. So you say I can use your code (with your name in it) in my Project?
AndroidFire said:
you can use my one it will bit easier Ok
Click to expand...
Click to collapse
Now while this problem is solved another problem has come up.
As I told you in my first thread, there is a finish button. It has this use:
when user clicks next 2 times (so if he made it until the 3rd picture) and then clicks finish, he'll Return to the main activity, and instead of the text 'Klicke auf start um zu beginnen' (click on start to begin) the text 'you made it until the 3rd picture' should show up.
If he clicked Next 5 times (6th picture) and clicks finish, he also returns to the main activity, but the text is 'you made it until the 5th picture'.
And so on with the others.
now i dont know, how to implement multiple buttons, how can I learn that? also how did you learn to code, AndroidFire? It's such a masterpiece *-*
I've tried this, but I failed.
the red lines are those, which I made at my own but they unfortunately don't work
Java Main Activity
Code:
package ch.OptiLab.visustest;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity implements OnClickListener {
Button btn1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1 = (Button) findViewById(R.id.buttonSTART);
btn1.setOnClickListener(this);
[COLOR="red"] Intent intent = getIntent();
if( intent != null)
String inhalt = intent.GetStringExtra("0.1");[/COLOR]
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
startActivity(new Intent(this,VisusActivity.class));
}
}
XML Main Activity
Code:
<RelativeLayout xmlns:android="(external link)"
xmlns:tools="(external link)"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="ch.OptiLab.visustest.MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/Text1"
android:id="@+id/textView"
android:layout_marginTop="84dp"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:gravity="center_horizontal"
android:singleLine="false" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/Text2"
android:id="@+id/textView2"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="33dp" />
<Button
android:id="@+id/buttonSTART"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:text="@string/button1"
android:layout_below="@+id/textView"
android:layout_centerHorizontal="true"
android:layout_marginTop="142dp" />
</RelativeLayout>
Java 2nd activity
Code:
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
/**
* @author AndroidFire
*/
public class VisusActivity extends Activity {
Button next;
ImageView testanzeige;
Button finish;
int i = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_visus);
next = (Button)findViewById(R.id.next);
testanzeige = (ImageView)findViewById(R.id.testanzeige);
[COLOR="red"]finish = (Button)findViewById(R.id.finish);[/COLOR]
next.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
i++;
// To Set Your 1 Image Do it Thorough Layout
if (i == 1 ) {
//Your 2 Image
testanzeige.setImageResource(R.drawable.visustest);
[COLOR="Red"]finish.setOnClickListener(new View.OnClickListener() {
Intent i = new Intent(this, MainActivity.class);
String content = "You made it until 2nd picture".toString();
i.putExtra("0.1", content);
}
[/COLOR]
}
else if (i == 2) {
//Your 3 Image
testanzeige.setImageResource(R.drawable.v2);
}
else if (i == 3) {
//Your 4 Image
testanzeige.setImageResource(R.drawable.v3);
}
else if (i == 4) {
// Your 5 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 5 ) {
//Your 6 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 6) {
//Your 7 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 7 ) {
//Your 8 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 8 ) {
//Your 9 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 9) {
//Your 10 Image
testanzeige.setImageResource(R.drawable.visustest);
}
else if (i == 10) {
//Image 11 Image
next.setText("Finish");
Toast.makeText(getApplicationContext(), "Your Final Text", Toast.LENGTH_LONG).show();
}
}
});
}
}
XML 2nd Activity
Code:
<RelativeLayout xmlns:android="(external link)"
(external link)"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="ch.OptiLab.visustest.VisusActivity" >
<ImageView
android:id="@+id/testanzeige"
android:layout_width="231dp"
android:layout_height="231dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:src="@drawable/v2" />
<Button
android:id="@+id/next"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="16dp"
android:text="@string/NEXTPIC" />
<Button
android:id="@+id/finish"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/next"
android:layout_alignBottom="@+id/next"
android:layout_alignParentLeft="true"
android:text="@string/cantread" />
</RelativeLayout>
The most important strings:
Code:
<string name="Text1">Klicke auf Start um zu beginnen.</string>
<string name="cantread">finish</string>
Thank you so much
other way also not work
Well I have tried another solution, but it didn't work either. What do I have to do?
Code:
Code:
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
/**
* [user=736105]@author[/user] AndroidFire
*/
public class VisusActivity extends Activity {
Button next;
ImageView testanzeige;
Button finish;
int i = 0;
[user=439709]@override[/user]
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_visus);
next = (Button)findViewById(R.id.next);
testanzeige = (ImageView)findViewById(R.id.testanzeige);
finish = (Button)findViewById(R.id.finish);
next.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View arg0) {
i++;
// To Set Your 1 Image Do it Thorough Layout
if (i == 1 ) {
//Your 2 Image
testanzeige.setImageResource(R.drawable.visustest);
}
else if (i == 2) {
//Your 3 Image
testanzeige.setImageResource(R.drawable.v2);
}
else if (i == 3) {
//Your 4 Image
testanzeige.setImageResource(R.drawable.v3);
}
else if (i == 4) {
// Your 5 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 5 ) {
//Your 6 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 6) {
//Your 7 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 7 ) {
//Your 8 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 8 ) {
//Your 9 Image
//Imagey.setImageResource(R.drawable.Your Image);
}
else if (i == 9) {
//Your 10 Image
testanzeige.setImageResource(R.drawable.visustest);
}
else if (i == 10) {
//Image 11 Image
next.setText("Finish");
Toast.makeText(getApplicationContext(), "Your Final Text", Toast.LENGTH_LONG).show();
}
}
});
[COLOR="Red"]finish.setOnClickListener(new View.OnClickListener() {
Intent i = new Intent(this, MainActivity.class);
[user=439709]@override[/user]
public void onClick(View arg0) {
i++;
if (i == 1 ) {
String content = "You got 0.1".toString();
i.putExtra("0.1", content);
[/COLOR]
}
}
}
}
I'm assuming you declared your activity in the Manifest?
F'n noob said:
I'm assuming you declared your activity in the Manifest?
Click to expand...
Click to collapse
uhm I think so.
Edit: there are 2 activity-groups in my manifest, so I think they've been declared automatically?
After looking at your code further, you are using onClick methods but aren't implenting an onClickListener. Are your buttons working at all?
yes, they are working fine. I just dont know how to change the text.
rodentooth said:
yes, they are working fine. I just dont know how to change the text.
Click to expand...
Click to collapse
There are two ways I can think of to solve this one.
The first is to create an Application class, declare that in the manifest, and add a variable in there to save how many images have been seen. Just set it in the one activity and in the other read it, and if it's 0, show the start message, and if it's greater than 0 show the message you want.
The cooler way is to use startActivityForResult to go to the picture viewing activity. The picture viewing activity keeps track of how many the user saw and then, when they leave:
Code:
Intent returnData = new Intent();
returnData.putExtra("PICTURES_SEEN", count);
setResult(RESULT_OK, returnData);
Then, in the first activity:
Code:
@Override
protected void onActivityResult (int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
int picturesSeen = data.getExtra("PICTURES_SEEN");
// do stuff
}
}
Hopefully that's helpful.
(There's a page in Google's API called "Getting a Result from an Activity" but I can't link to it because I'm a spammernew.)