Horizontal ProgressBar: Toggling between determinate and indeterminate
I'm trying to toggle a SeekBar between the the two modes to display the state of streaming media.
I've established that the correct graphics show when defining the android:indeterminate tag in XML:
<SeekBar
android:id="@+id/seekBar1"
android:indeterminate="false"
android:progressDrawable="@android:drawable/progress_horizontal"
android:indeterminateDrawable="@android:drawable/progress_indeterminate_horizontal"
android:indeterminateBehavior="cycle"
android:indeterminateOnly="false"
android:progress="33"
android:secondaryProgress="66"
android:layout_height="wrap_content"
android:layout_width="match_parent"></SeekBar>
The trouble is, when trying to switch by calling setIndeterminate(true) , the drawables don't appear to change properly. In the case of indeterminate->determinate, the animation stops, and from determinate->indeterminate, nothing happens.
What am I doing wrong?
The SeekBar onSizeChanged() initializes only the current selected background drawable, and it is called once when the SeekBar is initialized. So a fix might be:
public class CorrectedSeekBar extends SeekBar {
public CorrectedSeekBar(Context context) {
super(context);
}
public CorrectedSeekBar(Context context, AttributeSet attrs) {
super(context, attrs);
}
public CorrectedSeekBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
boolean current = isIndeterminate();
setIndeterminate(!current);
super.onSizeChanged(w, h, oldw, oldh);
setIndeterminate(current);
super.onSizeChanged(w, h, oldw, oldh);
}
}
And in the layout xml use <yourpackage.CorrectedSeekBar ...
This doesnt look nice, other workarounds might be possible but I think this is the main problem (bug?).
I have had the same problem and I solved it by calling postInvalidate() to force the view refresh. I'm on Android 2.3.4.
// Configure the SeekBar
seekBar.setIndeterminate(true);
seekBar.postInvalidate();
Well instead setting the pd to indeterminate just switch its background. if you want drawable animations then i suggest to look into the TransitionDrawable here: TransitionDrawable. so the use of it is to actually add 2 different drawables and animate their transition. i think that should work for your case. but i don't have experience doing something like this on a progress dialog so i cant really tell.
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