Database Users

WebView - Handle JavaScript Pop Up ?

Hi,
I am new to Android Development. I am making an application with a WebView object. This loads a URL with some elements. However, I cannot get JavaScript PopUp to show up when the button is pressed.
My WebView has JavaScript enabled, but all other properties are disabled.
What is the property to enable WebView popups to show??

I had to do this. Override the onJSAlert() method in the WebChromeClient class:
Code:
public class MyWebChromeClient extends WebChromeClient {
@Override
public boolean onJsAlert(WebView view, String url, String message, JsResult result)
{
final JsResult finalRes = result;
new AlertDialog.Builder(view.getContext())
.setMessage(message)
.setPositiveButton(android.R.string.ok,
new AlertDialog.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which) {
finalRes.confirm();
}
})
.setCancelable(false)
.create()
.show();
return true;
}
}
Then add it to your webview:
Code:
MyWebChromeClient myWebChromeClient = new MyWebChromeClient();
webView.setWebChromeClient(myWebChromeClient);

Thanks. That did work!
One small thing, how do you set a Title for the pop-ups. Currently it shows the url in the Title.

I found a better example that sets the title:
http://lexandera.com/2009/01/adding-alert-support-to-a-webview/

footboydog said:
I found a better example that sets the title:
http://lexandera.com/2009/01/adding-alert-support-to-a-webview/
Click to expand...
Click to collapse
I tried that, but the Title is only displayed when the alert has one button/option. When there are multiple options, the Title shows the URL.

Sorry not sure how to fix that

footboydog said:
Sorry not sure how to fix that
Click to expand...
Click to collapse
Ok, I think I'll have to live with "file:///" showing as the Title for now...

you can convert to toast

[Q] Noob working on first solo App (aka: help)

Dear XDA,
I am a noob developer and I am trying to create my first real android application. (outside of Hello World prompts and predetermined tutorial programs) I am looking for a bit of guidance on how to best approach my project idea. What I want to do is create a sort of personal cook book for a friend with a main menu with options that takes you to a submenu with additional options that will take you to content pages that have return home buttons.
Please keep in mind that I am still in the learning process and want to learn. Any tips, comments, or approaches would help me a lot.
I am using eclipse to program currently and heavily relying on resources like http://developer.android.com to do even the simplest things.
Thank you!
~obewah

Well without getting into much detail i would say that you would need to come up with a data structure to store your recipes in, make some layouts for the screens you want to display. Also try to reuse the Activity that displays the recipe. When you start that Activity you can send an Extra in the Intent to specify which recipe to display. This will make it very easy to add recipes on the fly
From something awesome

Additional to what killersnowman said, I would recommend you to study ListActivity, and also databases, so you can add recipes from app.
Also you may want take a look to shared preferences.
If you have some coding question, feel free to contact me
Cheers From Colombia
D4.

Depends on if you want to be able to add/edit recipes or not. If you're going to add/edit etc., you'll want to do a database. If you just want to display recipes, reading in flat files would probably be easiest.

Probable be best to use strings.XML for the recipes. And for the buttons search for information about onClickListener and intent.

lukemovement1 said:
Probable be best to use strings.XML for the recipes. And for the buttons search for information about onClickListener and intent.
Click to expand...
Click to collapse
This might be the easiest so do this.
Sent from my SGH-T959 using XDA App

lukemovement1 said:
Probable be best to use strings.XML for the recipes. And for the buttons search for information about onClickListener and intent.
Click to expand...
Click to collapse
Easiest but not the most flexible
From something awesome

Thanks! Progress Update #1
First off thank you for all of the help so far! So far I have two XML layouts (one for the intro page with a picture, dedication, and button to the main.xml and the main with buttons to different categories inside the application)
This is my first independent code (which I am oh so proud of even if it only clicks through to another XML screen-- you have no idea how long it took me to make it work correctly)
Code:
package com.android.obewah.baristame;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class BaristaMeActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.startup);
final Button button = (Button) findViewById(R.id.startupBU);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Perform action on click {
setContentView(R.layout.main);};}
);}}
I am still trying to wrap my brain around how I am going to put in the recipes.
My current plan of action is to create a scroll menu that pops up when you select a category (via button on main page) that leads you to an XML of the recipe.
However this seems like it may be an unnecessarily difficult approach. I don't plan to have an option of adding recipes from the app just for it to be a reference.
Thoughts/Comments?
~obewah

final Button button = (Button) findViewById(R.id.startupBU);
Click to expand...
Click to collapse
Im going to change this too-
final Button startupBU = (Button) findViewById(R.id.startupBU);
to keep things ID'ed correctly

obewah said:
First off thank you for all of the help so far! So far I have two XML layouts (one for the intro page with a picture, dedication, and button to the main.xml and the main with buttons to different categories inside the application)
This is my first independent code (which I am oh so proud of even if it only clicks through to another XML screen-- you have no idea how long it took me to make it work correctly)
Code:
package com.android.obewah.baristame;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class BaristaMeActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.startup);
final Button button = (Button) findViewById(R.id.startupBU);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Perform action on click {
setContentView(R.layout.main);};}
);}}
I am still trying to wrap my brain around how I am going to put in the recipes.
My current plan of action is to create a scroll menu that pops up when you select a category (via button on main page) that leads you to an XML of the recipe.
However this seems like it may be an unnecessarily difficult approach. I don't plan to have an option of adding recipes from the app just for it to be a reference.
Thoughts/Comments?
~obewah
Click to expand...
Click to collapse
Might i suggest not just changing the layout in the onClickListener but calling startActivity and changing to an Activity that has that layout. This will preserve the back buttons functionality without a bunch of overriding it.
From something awesome

killersnowman said:
Might i suggest not just changing the layout in the onClickListener but calling startActivity and changing to an Activity that has that layout. This will preserve the back buttons functionality without a bunch of overriding it.
Click to expand...
Click to collapse
Please elaborate on how I would do that (and forgive my ignorance)
~obewah

this might interest you
http://developer.android.com/guide/practices/design/seamlessness.html#multiple-activities
Don't Overload a Single Activity Screen
Any application worth using will probably have several different screens. When designing the screens of your UI, be sure to make use of multiple Activity object instances.
Depending on your development background, you may interpret an Activity as similar to something like a Java Applet, in that it is the entry point for your application. However, that's not quite accurate: where an Applet subclass is the single entry point for a Java Applet, an Activity should be thought of as one of potentially several entry points to your application. The only difference between your "main" Activity and any others you might have is that the "main" one just happens to be the only one that expressed an interest in the "android.intent.action.MAIN" action in your AndroidManifest..xml file.
So, when designing your application, think of your application as a federation of Activity objects. This will make your code a lot more maintainable in the long run, and as a nice side effect also plays nicely with Android's application history and "backstack" model.

do you know any html coding? because you can use a webview to load a .html file from R.raw.file.html. i have done this with my change log on my app. also if you using strings.xml have a look at using the \n to add a new link.

Update 3
Well the first two buttons took me about two hours each. Then the next 8 or so took 15 min.
Here is what the code looks like atm; can anyone tell me how to make the back button cause it to go back one step in the program and not exit?
Code:
package com.android.obewah.baristame;
import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import android.view.Window;
import android.widget.Button;
public class BaristaMeActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
this.setRequestedOrientation(
ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
setContentView(R.layout.startup);
Button startupBU = (Button) findViewById(R.id.startupBU);
startupBU.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Perform action on click
setContentView(R.layout.main);
//start rec. buttons
}
});}
Class mystuff;
public void toreci(View v) {
setContentView(R.layout.make);
}
public void toramer(View v) {
setContentView(R.layout.ramer);
}
public void tohome(View v) {
setContentView(R.layout.main);
}
public void torcapp(View v) {
setContentView(R.layout.rcapp);
}
public void torlatt(View v) {
setContentView(R.layout.rlatt);
}
public void torbrev(View v) {
setContentView(R.layout.rbrev);
}
public void tordopp(View v) {
setContentView(R.layout.rdopp);
}
public void toriame(View v) {
setContentView(R.layout.riame);
}
public void torilat(View v) {
setContentView(R.layout.rilat);
}
public void toribre(View v) {
setContentView(R.layout.ribre);
}
public void test(View v) {
setContentView(R.layout.test);
}
}

Agree with killersnowman, don't overload the activity.
Have a recipe activity and layout. Make the button start the recipe activity and pass extra's (ints, strings, booleans) across in a bundle.
Here is an example on how to do it.
http://droidapp.co.uk/?p=48
Make the recipe activity read from the bundle, and then populate textviews / images etc based on them.

eatmold said:
Agree with killersnowman, don't overload the activity.
Have a recipe activity and layout. Make the button start the recipe activity and pass extra's (ints, strings, booleans) across in a bundle.
Here is an example on how to do it.
http://droidapp.co.uk/?p=48
Make the recipe activity read from the bundle, and then populate textviews / images etc based on them.
Click to expand...
Click to collapse
Ok, I have some dumb questions for you please forgive me in advance.
1) So what you are trying to tell me is to create another .java activity file that the main activity forwards to in order to preserve the integrity of the main activity. This new activity should be activated by the click here to start button and it will have all of the button code in it:
Code:
public void tolabou(View v) {
setContentView(R.layout.lcoff);
}
public void toldrip(View v) {
setContentView(R.layout.ldrip);
}
public void tolflav(View v) {
setContentView(R.layout.lflav);
Is that right?
2) Can you give me a idiot friendly definition of "activity, ints, strings, booleans, and bundle" and how they compliment each other
3) Right now I have a layout.xml for each recipe is that bad?
Feel free to answered all or any part of those questions and again I am truly grateful for all of the help I have received!

Well i can answer #2.
For more on activities: http://developer.android.com/reference/android/app/Activity.html
An activity is like each "part" of a program. You can have as any as you want. The main one gets called by the launcher to start the app.
For variable types look at: http://download.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html
Int = number without decimal (-7,0,1,8) -2,147,483,647 to 2,147,483,647 max.
for decimals use float or double
string = text. ("Hello World!")
boolean = true/false (1/0, on/off, whatever).
bundle = some android thing. I believe it can save the state of your program to resume and stuff.
For future referance:
Java Tutorials: http://download.oracle.com/javase/tutorial/index.html (Lots of good stuff for starting programming and java)
Android Dev: http://developer.android.com/guide/index.html (Android specific stuff)

OK, I'll try to explain the process:
Main Screen:
1 Activity : main.java (This is the Java class, contain java code)
1 Layout : main.xml (This is the XML layout, linked to the class in setContentView)
Recipe Screen:
1 Activity : recipe.java
1 Layout : recipe.xml
So if in the main screen there are 2 buttons ("Lasagne" and "Pasta Bake"). Pressing either of these buttons will launch the recipe screen, but will pass a different string in the bundle to the new activity:
Code:
LasagneButton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
Intent myintent = new Intent("com.whatever.whateverapp.RECIPE");
Bundle mybundle = new Bundle();
mybundle.putString("recipename", "lasagne");
myintent.putExtras(mybundle);
startActivity(myintent);
}
});
The code above is creating a new intent, and a bundle. Adding a string called "recipename" to the bundle and setting it's value to "lasagne". This bundle is then added to the intent, and the activity is started. For the second button you would do exactly the same but set the string to "PastaBake".
So now when the recipe activity starts you need to extract the string, the next code should be placed under onCreate in your recipe activity:
Code:
Bundle mybundle = getIntent().getExtras();
String recipename = mybundle.getString("recipename");
Now with this recipename string you will need to populate your layout.
Hope that makes it a bit clearer. Here are some short tutorials I have written that may help you understand the basics a bit more (BTW: I am no expert, and have only been programming Android / Java for 6 months or so):
Buttons & Actions: http://droidapp.co.uk/?p=4
Changing Screens: http://droidapp.co.uk/?p=24
You will need to read and understand the second one to understand setting up activities as they need to be declared in the AndroidManifest file.

Enabling selection in textview

I am using this android:textIsSelectable and still gets the error:
Code:
TextView does not support text selection. Action mode cancelled.
Can any one please tell me what I might be doing wrong?

obscurant1st said:
I am using this android:textIsSelectable and still gets the error:
Code:
TextView does not support text selection. Action mode cancelled.
Can any one please tell me what I might be doing wrong?
Click to expand...
Click to collapse
Please post the code and also the AP version you are testing the app cant say anything without that

I believe testIsSelectable for TextViews was introduced in Honeycomb, if you want to be able to mimic that feature with lower versions of Android, here's a little workaround :
Use an EditText instead of your TextView and set android:textIsSelectable to false
In your activity's java code, override onLongClickListener and set the EditText to selectable in this method, something like this :
Code:
public class yourClass extends Activity implements onLongClickListener {
EditText yourFakeTextView;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.whatever);
yourFakeTextView = (EditText) findViewById(R.id.editText1);
yourFakeTextView.setOnLongClickListener(this);
}
@Override
public boolean onLongClick(View v) {
switch (v.getId()) {
case R.id.editText1:
yourFakeTextView.setTextIsSelectable(true);
break;
default:
return;
}
return false;
}
}
This will make the EditText look like a regular TextView, and when the user long-clicks it, it will allow him to select the text (just like if it was a normal, selectable TextView).
Hope this helps.

I want to enable this feature on ICS and upper version of android. I am testing this on an ics device. There is something which is messed up. I will post the code as soon as I reach home!

[Q]Service doesn't stop even after calling stopService

Here is the service
Code:
public class SearchService extends IntentService {
public SearchService() {
super("SearchService");
// TODO Auto-generated constructor stub
}
// Binder given to clients
/**
* Class used for the client Binder. Because we know this service always
* runs in the same process as its clients, we don't need to deal with IPC.
*/
[user=439709]@override[/user]
protected void onHandleIntent(Intent intent) {
// TODO Auto-generated method stub
String FILENAME=intent.getStringExtra("name");
String FILEPATH=intent.getStringExtra("path");
ArrayList a=getSearchResult(new File(FILEPATH),FILENAME);
Toast.makeText(this, "Search Completed", Toast.LENGTH_LONG).show();
publishResults(a);
this.stopSelf();
}
private void publishResults(ArrayList<File> outputPath) {
Intent intent = new Intent("notify");
ArrayList<String> a=new ArrayList<String>();
for(int i=0;i<outputPath.size();i++){a.add(outputPath.get(i).getPath());}
intent.putStringArrayListExtra("path", a);
sendBroadcast(intent);
} private void publishResults(String a) {
Intent intent = new Intent("current");
intent.putExtra("name", a);
sendBroadcast(intent);
}}

I am using it like this
Code:
final Intent intent = new Intent(getActivity(), SearchService.class);
intent.putExtra("path",fpath);
intent.putExtra("name",a);
p=new ProgressDialog(getActivity());
p.setCancelable(false);
p.setTitle("Searching Files");
p.setMessage("Please Wait");
p.getWindow().addFlags( WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON );
p.setButton("Cancel", new DialogInterface.OnClickListener(){
public void onClick(DialogInterface p1, int p2)
{
getActivity().stopService(new Intent(getActivity(),SearchService.class));
// TODO: Implement this method
}
});
p.show();
getActivity().startService(intent);
but even after pressing cancel button,broadcast is received in activity
Sent from my GT-S5570 using XDA Premium 4 mobile app

A service to display a toast and brodcast the data it recieved looks like a design flaw
anyways you are extending the intent service i guess it does not implement stopService() rather it stops automatically when it has nothing to do[not sure with it please check documentation for IntentService never actually used one of those ]
I guess you need to extend the Service class from package android.app
Sent from my GT-S5302 using Tapatalk 2

sak-venom1997 said:
A service to display a toast and brodcast the data it recieved looks like a design flaw
anyways you are extending the intent service i guess it does not implement stopService() rather it stops automatically when it has nothing to do[not sure with it please check documentation for IntentService never actually used one of those ]
I guess you need to extend the Service class from package android.app
Sent from my GT-S5302 using Tapatalk 2
Click to expand...
Click to collapse
Actually I am using toast just for debugging.I am learning services. so I might be wrong at places.I made this service to search for files while an indeterminate progress dialog shows in activity till the broadcast of result is received.
I used intentservice because it was supposed to do one work at a time.please suggest me exact ways to use service in my case.I also want to make sure that if activity is paused(minimized) then, when task is completed activity is also started
Sent from my GT-S5570 using XDA Premium 4 mobile app

arpitkh96 said:
Actually I am using toast just for debugging.I am learning services. so I might be wrong at places. I made this service to search for files while an indeterminate progress dialog shows in activity till the broadcast of result is received.
I used intentservice because it was supposed to do one work at a time.please suggest me exact ways to use service in my case.I also want to make sure that if activity is paused(minimized) then, when task is completed activity is also started
Click to expand...
Click to collapse
You can still use an IntentService to do that. To stop it just pass an Intent to it with a boolean extra indicating that you don't want to do anything. You'll need only one more if clause in the onHandleIntent of the service.

SimplicityApks said:
You can still use an IntentService to do that. To stop it just pass an Intent to it with a boolean extra indicating that you don't want to do anything. You'll need only one more if clause in the onHandleIntent of the service.
Click to expand...
Click to collapse
That didnt worked I used it like this.
Code:
@Override
protected void onHandleIntent(Intent intent) {
// TODO Auto-generated method stub
String FILENAME=intent.getStringExtra("name");
String FILEPATH=intent.getStringExtra("path");
boolean b=intent.getBooleanExtra("run",false);
while(b){
ArrayList<File> a=getSearchResult(new File(FILEPATH),FILENAME);
publishResults(a);
this.stopSelf();}
}
Code:
final Intent intent = new Intent(getActivity(), SearchService.class);
intent.putExtra("path",fpath);
intent.putExtra("name",a);
intent.putExtra("run",true);
p=new ProgressDialog(getActivity());
p.setCancelable(false);
p.setTitle("Searching Files");
p.setMessage("Please Wait");
p.getWindow().addFlags( WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON );
p.setButton("Cancel", new DialogInterface.OnClickListener(){
public void onClick(DialogInterface p1, int p2)
{
Intent j=new Intent(getActivity(),SearchService.class);
j.putExtra("run",false);
getActivity().stopService(j);
// TODO: Implement this method
}
});
p.show();
getActivity().startService(intent);
Sent from my GT-S5570 using XDA Premium 4 mobile app

arpitkh96 said:
That didnt worked I used it like this.
Code:
@Override
protected void onHandleIntent(Intent intent) {
// TODO Auto-generated method stub
String FILENAME=intent.getStringExtra("name");
String FILEPATH=intent.getStringExtra("path");
boolean b=intent.getBooleanExtra("run",false);
while(b){
ArrayList<File> a=getSearchResult(new File(FILEPATH),FILENAME);
publishResults(a);
this.stopSelf();}
}
Code:
final Intent intent = new Intent(getActivity(), SearchService.class);
intent.putExtra("path",fpath);
intent.putExtra("name",a);
intent.putExtra("run",true);
p=new ProgressDialog(getActivity());
p.setCancelable(false);
p.setTitle("Searching Files");
p.setMessage("Please Wait");
p.getWindow().addFlags( WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON );
p.setButton("Cancel", new DialogInterface.OnClickListener(){
public void onClick(DialogInterface p1, int p2)
{
Intent j=new Intent(getActivity(),SearchService.class);
j.putExtra("run",false);
getActivity().stopService(j);
// TODO: Implement this method
}
});
p.show();
getActivity().startService(intent);
Click to expand...
Click to collapse
First, if you look in the Dokumentation for IntentService, it says that you should not call stopSelf because it is already implemented to do that when there are no intents left. So It really should be easier to use a Service if you want to stop it like that.
If you want to keep using the intent service, I'd instead use a boolean instance variable which is checked in the publishResults method so just let the service do its work, but before it is published in the UI thread check if the dialog was canceled or not. Otherwise because you have two threads you can't be sure when the other thread receives the boolean change.
To me it seems like you could also use an AsyncTask to handle the threading and that class is easily cancelable .

SimplicityApks said:
First, if you look in the Dokumentation for IntentService, it says that you should not call stopSelf because it is already implemented to do that when there are no intents left. So It really should be easier to use a Service if you want to stop it like that.
If you want to keep using the intent service, I'd instead use a boolean instance variable which is checked in the publishResults method so just let the service do its work, but before it is published in the UI thread check if the dialog was canceled or not. Otherwise because you have two threads you can't be sure when the other thread receives the boolean change.
To me it seems like you could also use an AsyncTask to handle the threading and that class is easily cancelable .
Click to expand...
Click to collapse
I cannot use Asynctask ,as operation could be long.checking the boolean before publish is good idea.I will try this
Sent from my GT-S5570 using XDA Premium 4 mobile app

Android read battery capacity on Samsung Galaxy S5 Mini

Hello
I'm developing a little android APP.
I want to read Battery Capacity..
As far as I know is there no API before API Level 21 for that.
So I did it with the system file: /sys/class/power_supply/battery/full_bat.
This works great on the HTC One X/Sensation. But not on the SGS 5 mini...
Unfortunately I don't have an SGS 5 mini myself...
So I ask you. Is there an other way to read battery capacity?
Or can you give me the path to the system file on the SGS5 mini?
Thanks for your help!
PS: If you're interested in my app. Search on the playstore for charge cylce counter:angel:

Don't use a single link, smartphones are different from each other! Like this Samsung Galaxy S5 Mini.
Use a true method who get the battery state, what value do you want to get?
Here a exemple for get the charge level:
Code:
public class Main extends Activity {
private TextView batteryTxt;
private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver(){
@Override
public void onReceive(Context ctxt, Intent intent) {
int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0);
batteryTxt.setText(String.valueOf(level) + "%");
}
};
@Override
public void onCreate(Bundle b) {
super.onCreate(b);
setContentView(R.layout.main);
batteryTxt = (TextView) this.findViewById(R.id.batteryTxt);
this.registerReceiver(this.mBatInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
}
}
And don't forget to call this on your onDestroy method:
Code:
this.unregisterReceiver(mBatInfoReceiver);
There are few tutorial on the web for get more details on the battery, search better

Yeah I know that.
But I want to get the full battery capacity in mAh for example 1800mAh for the HTC One X.
And as far as I know there is know API for that before API level 22...
So I tried it with a file..