Oh, I forgot my test program:
-----------------------------------------
package test.exceptiontest;
import java.lang.Thread.UncaughtExceptionHandler;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
public class ExceptionTest extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MyExceptionHandler handler = new MyExceptionHandler
(Thread.getDefaultUncaughtExceptionHandler());
Thread.setDefaultUncaughtExceptionHandler(handler);
//
// Exception handled correctly:
//
Thread t = new Thread() {
@Override
public void run()
{
throw new OutOfMemoryError("i am some nasty
exception");
}
};
t.start();
//
// Exception jams UI:
//
throw new OutOfMemoryError("i am some nasty exception");
}
private class MyExceptionHandler implements UncaughtExceptionHandler
{
private UncaughtExceptionHandler oldHandler;
MyExceptionHandler(UncaughtExceptionHandler oldHandler) {
this.oldHandler = oldHandler;
}
@Override
public void uncaughtException(Thread thread, Throwable
throwable) {
Log.d("Debug", "Caught exception: " +
throwable.getClass().getName
() + ": " + throwable.getMessage());
//
// This would use the default platform exception
handler:
//
// oldHandler.uncaughtException(thread, throwable);
}
}
}
On 12 Aug., 09:56, Chronos <[email protected]> wrote:
> Hi all,
>
> in my application I would like to catch all exceptions globally - it
> should not matter, where those exceptions occur. Some runtime
> exceptions are practically impossible to catch (OutOfMemoryError for
> instance), but I want to show an informative dialog and resume
> execution at some well-defined point (main menu activity or
> something).
>
> Using Thread.setDefaultUncaughtExceptionHandler() does this for
> background threads, but it is of no help in the UI thread (or adjacent
> handlers). If an exception occurs in the UI thread, the UI will be
> jammed - not reacting to any key or touch events anymore. Of course,
> this seems natural since it did not catch that exception; but I wonder
> if there is a way to recover the UI thread. So:
>
> - Can I recover / restart the UI thread after an uncaught exception
> (from another thread) ?
> - Is there another way to catch uncaught exceptions globally ?
> - Are there viable alternatives to handle this problem ?
>
> Thx in advance
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