Question

Possible Duplicate:
Using global exception handling with “setUncaughtExceptionHandler” and “Toast”

I have implemented UncaughtExceptionHandler in onCreate() in one of my activities.

In uncaughtException() method I am trying to open another activity ErrorActivity with an extra parameter (error msg and stacktrace). That activity should only show (ment globaly) AlertDialog and handle logs etc.

Can some one tell me why the ErrorActivity doesnt open while the code in oncoughtException gets executed? I suspect the problem is Thread related.

Here is my first activity (simulating exception in onCreate())

public class MainActivity extends Activity {

    GlobalSettings settings;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        Thread.currentThread().setUncaughtExceptionHandler(
                new UncaughtExceptionHandler() {

            @Override
            public void uncaughtException(Thread thread, Throwable ex) {
                Intent intent = new Intent(MainActivity.this,
                                               ErrorActivity.class);
                Bundle bundle = new Bundle();
                bundle.putString("ERROR", ex.getMessage());
                intent.putExtras(bundle);
                startActivity(intent); 
            } 
        } );

        settings = (GlobalSettings) getApplication();
        settings = null;
        settings.getApplicationContext();
        setContentView(R.layout.main);
    }
}

And my second activity that should handle errors:

public class ErrorActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        Bundle bundle = getIntent().getExtras();
        String name = bundle.getString("ERROR");
        ShowAlertDialog(name);
    }
}

Answer 1

Refer Using global exception handling with “setUncaughtExceptionHandler” and “Toast”

There Qberticus told

You’re not seeing anything because the
exception happened on your UI thread
and the stack unrolled all the way. So
there is no more Looper and there is
no support there that is used to
display the Toast.

Since the exception happens on UI we cannot do an UI operation 🙁