Android MyFirstApp - Unfortunately application stopped working

Question

I've designed first application in android by following the tips mentioned in http://developer.android.com/training/basics/firstapp/starting-activity.html#AddToManifest

When I type something and press Send button it displays

Unfortunately app stop working

and the corresponding log is as below

10-10 12:10:04.029: D/dalvikvm(550): Not late-enabling CheckJNI (already on)
10-10 12:10:06.549: D/gralloc_goldfish(550): Emulator without GPU emulation detected.
10-10 12:10:26.169: D/AndroidRuntime(550): Shutting down VM
10-10 12:10:26.169: W/dalvikvm(550): threadid=1: thread exiting with uncaught exception (group=0x409961f8)
10-10 12:10:26.229: E/AndroidRuntime(550): FATAL EXCEPTION: main
10-10 12:10:26.229: E/AndroidRuntime(550): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myfirstapp/com.example.myfirstapp.DisplayMessageActivity}: java.lang.IllegalArgumentException: No view found for id 0x7f080000 for fragment PlaceholderFragment{4108e7c8 #0 id=0x7f080000}
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1955)
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1980)
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.app.ActivityThread.access$600(ActivityThread.java:122)
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1146)
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.os.Handler.dispatchMessage(Handler.java:99)
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.os.Looper.loop(Looper.java:137)
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.app.ActivityThread.main(ActivityThread.java:4340)
10-10 12:10:26.229: E/AndroidRuntime(550):  at java.lang.reflect.Method.invokeNative(Native Method)
10-10 12:10:26.229: E/AndroidRuntime(550):  at java.lang.reflect.Method.invoke(Method.java:511)
10-10 12:10:26.229: E/AndroidRuntime(550):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
10-10 12:10:26.229: E/AndroidRuntime(550):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
10-10 12:10:26.229: E/AndroidRuntime(550):  at dalvik.system.NativeStart.main(Native Method)
10-10 12:10:26.229: E/AndroidRuntime(550): Caused by: java.lang.IllegalArgumentException: No view found for id 0x7f080000 for fragment PlaceholderFragment{4108e7c8 #0 id=0x7f080000}
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:789)
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:998)
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.app.BackStackRecord.run(BackStackRecord.java:622)
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1330)
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.app.Activity.performStart(Activity.java:4474)
10-10 12:10:26.229: E/AndroidRuntime(550):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1928)
10-10 12:10:26.229: E/AndroidRuntime(550):  ... 11 more
10-10 12:10:31.099: I/Process(550): Sending signal. PID: 550 SIG: 9

The code:

public void sendMessage(View view) { 
   Intent intent=new Intent(this, DisplayMessageActivity.class); 
   EditText editText=(EditText)findViewById(R.id.edit_message); 
   String message=editText.toString().toString(); 
   intent.putExtra(EXTRA_MESSAGE, message); 
   startActivity(intent); 
}

DisplayMessageActivity:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_display_message);
    if (savedInstanceState == null) {
        getFragmentManager().beginTransaction()
                .add(R.id.container, new PlaceholderFragment()).commit();
    }
    Intent intent=getIntent();
    String message=intent.getStringExtra(MainActivity.EXTRA_MESSAGE);
    
    TextView textView=new TextView(this);
    textView.setTextSize(40);
    textView.setText(message);
    
    setContentView(textView);
}

What is the problem? Can anyone give me a suggestion as to what's going wrong.

Please just write code what you written in send Button click, so people can understand what you written wrong and don't need to display this much of error stack on question Or copy your activity class :) — khurram, Oct 10 '14 at 07:11
http://stackoverflow.com/questions/23353173/unfortunately-myapp-has-stopped-how-can-i-solve-this — Blackbelt, Oct 10 '14 at 07:33
This is the code of send Button public void sendMessage(View view){ Intent intent=new Intent(this, DisplayMessageActivity.class); EditText editText=(EditText)findViewById(R.id.edit_message); String message=editText.toString().toString(); intent.putExtra(EXTRA_MESSAGE, message); startActivity(intent); } — Ramprakash, Oct 10 '14 at 07:43
The problem is in `DisplayMessageActivity` and likely a fragment transaction in `onCreate()` there. — laalto, Oct 10 '14 at 07:59
the problem is Fragment related. The system is looking for `R.id.container` in `activity_display_message`, and that is probably not there. If you are not explicitly using Fragment, comment out `if (savedInstanceState == null) { getFragmentManager().beginTransaction() .add(R.id.container, new PlaceholderFragment()).commit(); }` — Blackbelt, Oct 10 '14 at 08:35

score 0 · Answer 1 · edited Aug 25 '21 at 21:52

0

I looked at the link you pasted here and I think this should solve your problem:

in your activity_display_message.xml you have to add the following code

android:id="@+id/activity_display_message

edited Aug 25 '21 at 21:52

lejlun

3,363
2
12
30

answered Nov 06 '16 at 15:27

Rahul

78
14

score -2 · Answer 2 · edited Sep 24 '19 at 07:35

-2

In Android SDK Tools R15 you can enable GPU emulation.

You need to create a new emulator virtual device and set GPU emulation to true in Hardware properties.

GPU enabling is now is allowed directly through Emulator Creation option. Go to Window --> Android Virtual Device Manager --> new. Now remember to checkmark Use GPU host, then you will have a pretty fast working emulator with GPU enabled.

edited Sep 24 '19 at 07:35

NIMISHAN

1,267
3
19
29

answered Oct 10 '14 at 07:12

Shahbaz Akhtar

247
2
8

Currently I've specified RAM size as 768MB and heap as 64. I tried by changing RAM size by 1024MB still it gives same error and log. How much should I give for heap size?? – Ramprakash Oct 10 '14 at 07:34
the issue is not memory related – Blackbelt Oct 10 '14 at 07:41

Android MyFirstApp - Unfortunately application stopped working

2 Answers2