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I have a little application with 2 activities (say A and B) and an appWidget. When I click on the widget I start an activity, that animate the widget while do some stuff. I make it this way;

Intent intent = new Intent(context, DialogActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.main);
RemoteViews.setOnClickPendingIntent(R.id.imageButton1, pendingIntent);

then the activity in the onCreate does this:

    Paint p = new Paint();
    p.setStyle(Paint.Style.FILL);
    p.setColor(Color.TRANSPARENT);

    logger.debug("inizializzo movie"); //$NON-NLS-1$
    Movie movie;
    InputStream is = null;
    long moviestart = 0;
    is = this.getResources().openRawResource(R.drawable.gifanimata);
    movie = Movie.decodeStream(is);

    taskIsrunning = true;

    //this is an AsyncTask that at the end of the work sets taskIsrunning = false
    new InitTask().execute(this);
    while (taskIsrunning) {

    Bitmap bitmap = Bitmap.createBitmap(100, 100, Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    canvas.drawRect(0, 0, 100, 100, p);

    long now = android.os.SystemClock.uptimeMillis();

    if (moviestart == 0) { // first time
    moviestart = now;

    }
    int relTime = (int) ((now - moviestart) % movie.duration());
    movie.setTime(relTime);

    movie.draw(canvas, 0, 0);
    updateViews.setImageViewBitmap(R.id.imageButton1, bitmap);
    widgetManager.updateAppWidget(theWidget, updateViews);
    try {
    Thread.sleep(500);
    } catch (Exception e) {
    throw e;
    }
    }

at the end of all, from this activity (witch is completely transparent) I show a dialog. This works just like I want, but here is the problem:

When I launch the activity, if previously I opened the first activity of the application (activity A) and closed it with the home button (the activity remain so in the stack) instead of closing it with back button, the moment of showing the dialog from the activity launched by the widget, the dialog is shown, but the activity A as well.

I tryied setting on manifest android:noHistory="true" and the problem is solved, but if from activity A i launch activity B, the back button will not show back activity A.

Tim
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Apperside
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  • Not sure if I got everything clear. What is your parent activity for the dialog and you can implement a force close on the activity by pressing a Back/Close button of the phone. You can override onPause() if needed. More to that http://stackoverflow.com/questions/3141996/android-how-to-override-the-back-button-so-it-doesnt-finish-my-activity and http://stackoverflow.com/questions/3036265/ondestroy-wont-get-called-after-this-finish – Sergey Benner Jan 14 '12 at 23:15
  • i have a total of 3 activities in my app, only one of them is launched from the widget, call it activity W. this activity "plays" an animated gif on the widget while does some stuff, and at the end shows a dialog. when activity W is first launched, if i have other activities on the stack, they are not shown, but they are when i show the dialog. the problem is that Using the application (clicking on the icon in app drawer) and exiting with home button it will remain in the stack, and will be shown when showing the dialog from activity W. – Apperside Jan 15 '12 at 11:56

0 Answers0