Android: SeekBar onProgressChanged-event doesn't get fired when setting progress programmatically

Question

My onProgressChanged()-event doesn't get fired when I set the progress of a SeekBar programmatically, but it does get fired perfectly fine when I physically move the SeekBar slider.

I'd expect the event to fire when using setProgress() - the Android Developer Reference even states that:

public abstract void onProgressChanged (SeekBar seekBar, int progress, boolean fromUser)

Notification that the progress level has changed. Clients can use the fromUser parameter to distinguish user-initiated changes from those that occurred programmatically.

Some code snippets from my project:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.my_activity);               

    final SeekBar mySeekBar = ((SeekBar) findViewById(R.id.mySeekBar));
    
    mySeekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener(){
        @Override
        public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) {
            // Do some stuff
        }
    }
}


@Override
protected void onResume() {
    super.onResume();

    final SeekBar mySeekBar = ((SeekBar) findViewById(R.id.mySeekBar));
    mySeekBar.setProgress(someValue); // This SHOULD trigger onProgressChanged(), but it doesn't...
}

Answer 1

Stumbled across the same problem just now.

In my case, the onProgressChanged did not get fired simply because the value did not actually change. I was setting the same value as the current one (0 :)

(and I don't see anything wrong with your code)