import android.app.*;
import android.os.*;
import android.view.*;
import android.widget.*;
public class MainActivity extends Activity
{
/** Called when the activity is first created. */
@override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button display = (Button) findViewById(R.id.button);
TextView tv = (TextView) findViewById(R.id.textView);
display.setOnClickListener( new View.OnClickListener(){
public void onClick(View p1)
{
setContentView(R.layout.main2);
// TODO: Implement this method
}
});
Button ba = (Button) findViewById(R.id.buttonBac);
ba.setOnClickListener(new View.OnClickListener(){
public void onClick(View p1)
{
setContentView(R.layout.main);
// TODO: Implement this method
}
});
}
}
Anyway, the first button works and when clicked, displays main2 makin 2 whoum d have a textview and a button that switches back 2 main but when the onclick listener whTever is aplyed to the code it wont even disllag the first layout and simply crashes... hitting the wall again
Focusedrelaxaation87 said:
import android.app.*;
import android.os.*;
import android.view.*;
import android.widget.*;
public class MainActivity extends Activity
{
/** Called when the activity is first created. */
@override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button display = (Button) findViewById(R.id.button);
TextView tv = (TextView) findViewById(R.id.textView);
display.setOnClickListener( new View.OnClickListener(){
public void onClick(View p1)
{
setContentView(R.layout.main2);
// TODO: Implement this method
}
});
Button ba = (Button) findViewById(R.id.buttonBac);
ba.setOnClickListener(new View.OnClickListener(){
public void onClick(View p1)
{
setContentView(R.layout.main);
// TODO: Implement this method
}
});
}
}
Anyway, the first button works and when clicked, displays main2 makin 2 whoum d have a textview and a button that switches back 2 main but when the onclick listener whTever is aplyed to the code it wont even disllag the first layout and simply crashes... hitting the wall again
Click to expand...
Click to collapse
You can't do a second setContentView call in an activity. What you can do is define two Layouts within a LinearLayout in the XML, set the first one to "android:visibility="gone"", the second one to "visible" and switch between them onClick
Code:
[user=439709]@override[/user]
public void onClick(View v) {
switch (v.getId()){
case R.id.btnOne:
mLayoutFirst.setVisibility(View.GONE);
mLayoutSecond.setVisibility(View.VISIBLE);
break;
case (R.id.btnTwo):
mLayoutFirst.setVisibility(View.VISIBLE);
mLayoutSecond.setVisibility(View.GONE);
break;
}
}
Zatta said:
You can't do a second setContentView call in an activity. What you can do is define two Layouts within a LinearLayout in the XML, set the first one to "android:visibility="gone"", the second one to "visible" and switch between them onClick
Click to expand...
Click to collapse
Alternatively you could use a ViewSwitcher and call it's .next() and .previous() methods. This would probably be necessary when you have more than 2 views.
octobclrnts said:
Alternatively you could use a ViewSwitcher and call it's .next() and .previous() methods. This would probably be necessary when you have more than 2 views.
Click to expand...
Click to collapse
Thanks, never heard of before. I use that method for hiding/unhiding complete ViewGroups, Buttons and what not but I'll look into that, might be more easy.
Try naming the activity other than the "main" attribute, that is only for the first or "parent" activity. You need it to be a child activity.
Sent from my HUAWEI-M835 using xda app-developers app
Cool, learned something new
Related
I'm wanting to "do something" (actually play an mp3 sound) when someone has finished entering data in an EditText object in my activity, but I'm not sure how to tell when this has occurred. In VB, there is a event called lostfocus, but I don't know how to do it in java. I'm guessing that it has something to do with OnClickListener to see when the user is actually in the EditText object (let's call it et_01), but how do I know when they've gone to some other object?
I'd appreciate any specific help, as I'm pretty new to java.
How about OnFocusChangeListener?
http://developer.android.com/reference/android/view/View.OnFocusChangeListener.html
I did some searching and it seems like I need to use OnFocusChangeListener. I found this code snippet (below), but I'm too dumb to figure out how to plug it into my app. If my EditText that I'm watching is called et_01, can somebody please tell me 2 things...
1. How do I tie the OnFocusChangeListener to my et_01?
2. Where (specifically) does this code go in my activity? Inside my extends Activity...after the extends Activity...where oh where?
Code:
OnFocusChangeListener focusListener = new OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
/* When focus is lost check that the text field
* has valid values.
*/
if (!hasFocus) {
validateInput(v);
}
}
You have to connect a TextView object to your actual textview, then override the OnFocusChangeListener of that textview object.
Here's a complete implementation using your snippit (You have to implement validateInput() yourself):
Code:
package com.myapp.mytest;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.widget.TextView;
public class MyTest extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView tv=(TextView)findViewById(R.id.et_01);
tv.setOnFocusChangeListener(new OnFocusChangeListener(){
@Override
public void onFocusChange(View v,boolean hasFocus){
/* When focus is lost check that the text field
* has valid values.
*/
if (!hasFocus) {
validateInput(v);
}
}
});
}
}
Thank you, thank you, thank you! That is some nice help. I have one follow up question:
In my own activity, I should be able to put the code below in just under my own call: setContentView(R.layout.main);
In other words, I don't need to create a new class to do this. Correct? I apologize for my ignorance.
Code:
TextView tv=(TextView)findViewById(R.id.et_01);
tv.setOnFocusChangeListener(new OnFocusChangeListener(){
@Override
public void onFocusChange(View v,boolean hasFocus){
/* When focus is lost check that the text field
* has valid values.
*/
if (!hasFocus) {
validateInput(v);
}
}
});
Gene Poole said:
You have to connect a TextView object to your actual textview, then override the OnFocusChangeListener of that textview object.
Here's a complete implementation using your snippit (You have to implement validateInput() yourself):
Code:
package com.myapp.mytest;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.widget.TextView;
public class MyTest extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView tv=(TextView)findViewById(R.id.et_01);
tv.setOnFocusChangeListener(new OnFocusChangeListener(){
@Override
public void onFocusChange(View v,boolean hasFocus){
/* When focus is lost check that the text field
* has valid values.
*/
if (!hasFocus) {
validateInput(v);
}
}
});
}
}
Click to expand...
Click to collapse
Yes.
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx (stupid forum says my response was too short)
OK, I'm having an issue that I don't understand. In the code below, I'm getting an error on the MediaPlayer mpWeight = MediaPlayer.create(this, R.raw.mppig);
Holding my cursor over .create says:
The method create(Context, int) in the type MediaPlayer is not applicable for the arguments (new View.OnFocusChangeListener(){}, int)
What does that mean, and more importantly, how do I resolve it?
Here's the whole routine:
Code:
TextView tv=(TextView)findViewById(R.id.weight);
tv.setOnFocusChangeListener(new OnFocusChangeListener(){
@Override
public void onFocusChange(View v,boolean hasFocus){
/* When focus is lost check that the text field
* has valid values.
*/
if (!hasFocus) {
float tempweight = Float.parseFloat(et_weight.getText().toString());
if(tempweight > 200){
MediaPlayer mpWeight = MediaPlayer.create(this, R.raw.mppig);
mpWeight.start();
}
}
}
});
It has to do with the "this" pointer you are passing to the create() method. Since you are creating this within the OnFocusChangeListener() class, that it the "this" pointer. OnFocusChangeListener() does not resolve to a type "context" whereas if you'd created your media player within your Activity, Activity does resolve to a context.
To resolve this, make a class member of your activity that keeps a copy of the context. Assign it in the activity's OnCreate:
Code:
public class MyTest extends Activity {
[COLOR="blue"]protected Context mContext=null;[/COLOR]
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
[COLOR="Blue"]mContext=this;[/COLOR]
TextView tv=(TextView)findViewById(R.id.et_01);
tv.setOnFocusChangeListener(new OnFocusChangeListener(){
@Override
public void onFocusChange(View v,boolean hasFocus){
/* When focus is lost check that the text field
* has valid values.
*/
if (!hasFocus) {
float tempweight = Float.parseFloat(et_weight.getText().toString());
if(tempweight > 200){
MediaPlayer mpWeight = MediaPlayer.create([COLOR="blue"]mContext[/COLOR], R.raw.mppig);
mpWeight.start();
}
}
}
});
Gene, you are awesome! Thanks again for the help.
As with many things in life, this has led me to a new problem, that I do believe will be the end of this subject, if I can get it resolved.
In my activity, I have a few EditText objects mixed in with a few Spinner objects. The new problem is that if you have your cursor in an EditText object and the next item in the activity is a Spinner, the focus doesn't leave the EditText when the Spinner is selected. The focus of any of my EditText objects only leaves those objects IF the next thing selected is another EditText.
I'm unsure how to resolve this. Is there possibly a way to force the focus out of the EditText once a Spinner (or any other object) is touched? I would have thought that would happen automatically, but it doesn't seem to be doing so.
Gene Poole said:
It has to do with the "this" pointer you are passing to the create() method. Since you are creating this within the OnFocusChangeListener() class, that it the "this" pointer. OnFocusChangeListener() does not resolve to a type "context" whereas if you'd created your media player within your Activity, Activity does resolve to a context.
To resolve this, make a class member of your activity that keeps a copy of the context. Assign it in the activity's OnCreate:
Click to expand...
Click to collapse
Hi I'm working on a custom Android launcher I'm running into a little problem I have an image button that indicates show all applications but the problem is I don't know the code syntax to show all installed applications when that button is clicked!!
Please help I tried googling for the last four hours and getting very frustrated
Thanks in advance
Rapsong11
Sent from my Nexus 4 using xda app-developers app
Maybe you should use PackageManager to query the installed applications for you.
For example, when you want the list of launchable activities. You can do like this:
Code:
// create a intent for the query below
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
// add the intent category you want, if need
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
// get the instance of the package manager
PackageManager packageManager = context.getPackageManager();
// these are the activies you want
List<ResolveInfo> activities = packageManager.queryIntentActivities(mainIntent, 0);
Hope can help you
Code:
Here is my code:
package com.d4a.SchoolLauncher;
import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Settings;
import android.view.View;
import android.widget.HorizontalScrollView;
import android.widget.ImageButton;
import android.widget.ScrollView;
import android.content.Context;
import com.d4a.SchoolLauncher.R;
public class LauncherActivity extends Activity{
[user=439709]@override[/user]
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//scroller
final HorizontalScrollView scroller= (HorizontalScrollView) findViewById(R.id.scroller);
scroller.setSmoothScrollingEnabled(true);
//apps
final ImageButton apps= (ImageButton) findViewById(R.id.all_apps); //my all apps button
apps.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View v) {
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
PackageManager packageManager = context.getPackageManager();
List<ResolveInfo> activities = packageManager.queryIntentActivities(mainIntent, 0);
}
});
final ImageButton wbrowser= (ImageButton) findViewById(R.id.wbrowser);
wbrowser.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View v) {
String url = "http://www.google.com";
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
}
});
final ImageButton osettings= (ImageButton) findViewById(R.id.osettings);
osettings.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View v) {
startActivity(new Intent(Settings.ACTION_SETTINGS));
}
});
//remove from home screen button
//apps
final ImageButton delapps= (ImageButton) findViewById(R.id.delapps);
delapps.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View v) {
apps.setVisibility(View.GONE);
delapps.setVisibility(View.GONE);
}
});
//web browser
final ImageButton delwbrowser= (ImageButton) findViewById(R.id.delwbrowser);
delwbrowser.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View v) {
wbrowser.setVisibility(View.GONE);
delwbrowser.setVisibility(View.GONE);
}
});
//web browser
final ImageButton delosettings= (ImageButton) findViewById(R.id.dellosettings);
delosettings.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View v) {
osettings.setVisibility(View.GONE);
delosettings.setVisibility(View.GONE);
}
});
//add button
final ImageButton addshortcut= (ImageButton) findViewById(R.id.addshortcut);
addshortcut.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View v) {
startActivity(new Intent("com.PhysicsPhantom.Launcher"));
}
});
//done button
final ImageButton done= (ImageButton) findViewById(R.id.done);
done.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View v) {
delwbrowser.setVisibility(View.GONE);
delosettings.setVisibility(View.GONE);
delapps.setVisibility(View.GONE);
done.setVisibility(View.GONE);
addshortcut.setVisibility(View.GONE);
}
});
//edit button
final ImageButton edit= (ImageButton) findViewById(R.id.edit);
edit.setOnClickListener(new View.OnClickListener() {
[user=439709]@override[/user]
public void onClick(View v) {
if (apps.getVisibility()==View.VISIBLE){
delapps.setVisibility(View.VISIBLE);
}
if (wbrowser.getVisibility()==View.VISIBLE){
delwbrowser.setVisibility(View.VISIBLE);
}
if (osettings.getVisibility()==View.VISIBLE){
delosettings.setVisibility(View.VISIBLE);
}
done.setVisibility(View.VISIBLE);
addshortcut.setVisibility(View.VISIBLE);
}
});
//code to open editor for all delete buttons
//apps
apps.setOnLongClickListener(new View.OnLongClickListener() {
[user=439709]@override[/user]
public boolean onLongClick(View v) {
if (delapps.getVisibility()==View.GONE){
delapps.setVisibility(View.VISIBLE);
}
else{
delapps.setVisibility(View.GONE);
}
return true;
}
});
//web browser
wbrowser.setOnLongClickListener(new View.OnLongClickListener() {
[user=439709]@override[/user]
public boolean onLongClick(View v) {
if (delwbrowser.getVisibility()==View.GONE){
delwbrowser.setVisibility(View.VISIBLE);
}
else{
delwbrowser.setVisibility(View.GONE);
}
return true;
}
});
//settings
osettings.setOnLongClickListener(new View.OnLongClickListener() {
[user=439709]@override[/user]
public boolean onLongClick(View v) {
if (delosettings.getVisibility()==View.GONE){
delosettings.setVisibility(View.VISIBLE);
scroller.fullScroll(ScrollView.FOCUS_RIGHT);
}
else{
delosettings.setVisibility(View.GONE);
}
return true;
}
});
}
}
I get a error at: PackageManager packageManager = context.getPackageManager();
The error is as follows: context cannot be resolved
please help!!
[ code] tags would be helpful
out of ideas said:
[ code] tags would be helpful
Click to expand...
Click to collapse
just added code tags
sorry about that lol
You dont have startActivity in your launcher button
Can you please give me a code example fairly new to this
Sent from my Nexus 4 using xda app-developers app
Well, if you just want a activity list and launches when clicked, you can simply create a LauncherActivity.
Can you please show me using my code example where I would place that at? Thank you so much
Rapsong11
Sent from my Nexus 4 using xda app-developers app
rapsong11 said:
Can you please show me using my code example where I would place that at? Thank you so much
Rapsong11
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
1. create new class MyLauncherActivity
2. override the method "getTargetIntent()" in LauncherActivity
Code:
...
import android.app.LauncherActivity;
public class MyLauncherActivity extends LauncherActivity {
[user=439709]@override[/user]
protected Intent getTargetIntent () {
// just a example, you should replace the method yourself
Intent intent = new Intent();
intent.setAction(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
return intent;
}
}
3. replace the code inside your onClick method to the R.id.all_apps button :
Code:
Intent intent = new Intent(this, MyLauncherActivity.class);
startActivity(intent);
4. don't forget to declare MyLauncherActivity in your AndroidMenifest.xml
5. try to do it yourself with others' experience, but not just ask for the code, that's not good for a coder. Wish you can understand this.
Hi guys i am new to programming. I am trying to have multiple button to send different predefined SMS to predefined number. I am not sure how to have multiple setOnClickListener(new OnClickListener() as the 2nd setOnClickListener(new OnClickListener() gave me error.
public class SendSMSActivity extends Activity {
Button buttonSend;
Button buttonSend2;
@override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
buttonSend = (Button) findViewById(R.id.buttonSend);
buttonSend2 = (Button) findViewById(R.id.buttonSend2);
buttonSend.setOnClickListener(new OnClickListener() {
buttonSend2.setOnClickListener(new OnClickListener() {
@override
public void onClick(View v) {
switch (v.getId()) {
case R.id.buttonSend:
Intent sendIntent = new Intent(Intent.ACTION_VIEW);
sendIntent.putExtra("sms_body", "abc");
sendIntent.putExtra("address", "9909990");
sendIntent.setType("vnd.android-dir/mms-sms");
startActivity(sendIntent);
break;
case R.id.buttonSend2:
Intent sendIntent1 = new Intent(Intent.ACTION_VIEW);
sendIntent1.putExtra("sms_body", "def");
sendIntent1.putExtra("address", "012345678");
sendIntent1.setType("vnd.android-dir/mms-sms");
startActivity(sendIntent1);
break;
}
}
});
});
}
}
@stewypost
You cant write statements anywhere inside an anonymous inner class anyways ignoring the poor syntax
To do this first declare your
OnClickListner listner = (View v) ->
{
// your code
};
then call
button1.setOnClickListener(listner);
button2.setOnClickListener(listner);
Sent from my GT-S5302 using Tapatalk 2
Hello, I'm extremely new to both android application developing, and this forum.
I am trying to open another screen ( activity ) when a button ( readyButton ) on the splash screen is pressed. I've tried at least ten different times with different tutorials to no avail, this is my current code which didn't work, and instead forces the app to crash.
Code:
public class MainActivity extends Activity {
// Called when the activity is first created.
[user=439709]@override[/user]
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
OnClickListener listener = new OnClickListener() {
[user=439709]@override[/user]
public void onClick(View v) {
Intent intent = new Intent("SecondActivity");
startActivity(intent);
}
};
Button btn = (Button) findViewById(R.id.readybutton);
btn.setOnClickListener(listener);
}
}
Please help.
The button's name is 'readybutton'
the second activity name is 'SecondActivity'
also, where am I supposed to put this code into the java class? Here is how it is currently set up:
Code:
package com.unchat;
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.widget.Button;
import android.view.View.OnClickListener;
// Default Items
public class FirstActivity extends Activity {
[user=439709]@override[/user]
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
}
/** New button code start */
public class MainActivity extends Activity {
// Called when the activity is first created.
[user=439709]@override[/user]
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
OnClickListener listener = new OnClickListener() {
[user=439709]@override[/user]
public void onClick(View v) {
Intent intent = new Intent("SecondActivity");
startActivity(intent);
}
};
Button btn = (Button) findViewById(R.id.readybutton);
btn.setOnClickListener(listener);
}
}
/** new button code end */
[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.my, 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);
}
}
// End of Default Items
incorrectly announces intent
Try like this.
Code:
Intent intent = new Intent(this, SecondActivity.class) ;
startActivity(intent);
and check whether your Listener
1. you need to use the full name of your activity, including the package name.
2. you need to declare the activity in your AndroidManifest.xml file before calling it.
rhmsoft said:
2. you need to declare the activity in your AndroidManifest.xml file before calling it.
Click to expand...
Click to collapse
Unless he want's to run an activity that's not his, like opening the contact list, but I think you're right in assuming he's looking to launch a second one of his own activities.
bornander said:
Unless he want's to run an activity that's not his, like opening the contact list, but I think you're right in assuming he's looking to launch a second one of his own activities.
Click to expand...
Click to collapse
I thought you had to declare all your activities in the manifest?
Log
Post the error log please
Code:
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle presses on the action bar items
switch (item.getItemId()) {
case R.id.action_search:
openSearch();
return true;
case R.id.action_settings:
openSettings();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
Doesn't the default case create an infinite loop if item is not action search or action settings?
saliceman said:
Code:
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle presses on the action bar items
switch (item.getItemId()) {
case R.id.action_search:
openSearch();
return true;
case R.id.action_settings:
openSettings();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
Doesn't the default case create an infinite loop if item is not action search or action settings?
Click to expand...
Click to collapse
super.onOptionsItemSelected will execute the onOptionsItemSelected function with parameter item in the "super" class your class extends from, eg Fragment/Activity/ActionBarActivity/FragmentActivity etc
Jonny said:
super.onOptionsItemSelected will execute the onOptionsItemSelected function with parameter item in the "super" class your class extends from, eg Fragment/Activity/ActionBarActivity/FragmentActivity etc
Click to expand...
Click to collapse
Thanks for your response.
With the code below what does that mean? and could you provide an example of what would happen if I selected an option other than search or settings? I am having trouble with what this all means in the grand scheme of things. I might be missing something basic so try to keep that in mind - I have little knowledge of java.
Again, thanks for your help
Code:
package com.salmanshahid.myfirstapp;
import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
public class MainActivity extends ActionBarActivity {
public final static String EXTRA_MESSAGE = "com.example.myfirstapp" +
".MESSAGE";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@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 presses on the action bar items
switch (item.getItemId()) {
case R.id.action_search:
openSearch();
return true;
case R.id.action_settings:
openSettings();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void openSettings() {
// TODO Auto-generated method stub
}
private void openSearch() {
// TODO Auto-generated method stub
}
/** Called when the user clicks the Send button */
public void sendMessage(View view) {
// Do something in response to button
Intent intent = new Intent(this, DisplayMessageActivity.class);
EditText editText = (EditText) findViewById(R.id.edit_message);
String message = editText.getText().toString();
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
}
}
saliceman said:
I have little knowledge of java.
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No problem, you just need to know programming in general to understand.
saliceman said:
With the code below what does that mean? and could you provide an example of what would happen if I selected an option other than search or settings?
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replace
Code:
super
with
Code:
this
and you will get infinite loop.