Reputation: 4052
I'm trying to build a screen that shows a bunch of thumbnails at the bottom along with a full size version of the photos.
The thumbnails are (indirect) children of a HorizontalScrollView and the full size pictures are added as ImageViews of Fragments in a ViewPager.
What is the simplest way of zooming in on an ImageView? Zooming will use a fixed factor.
I've been unable to locate the Android Gallery source code, which might help me.
public boolean onDoubleTap(MotionEvent event) {
Log.e("test", "on double tap; event: "+ event);
Matrix m = new Matrix();
m.setScale(1.25f, 1.25f);
clickedImageView.setImageMatrix(m);
clickedImageView.invalidate();
clickedImageView.refreshDrawableState();
Log.e("test", "set image matrix after double tap event");
return true; // indicate event was handled
}
Upvotes: 1
Views: 460
Reputation: 743
That code looks like it should work, just make sure you set
android:scaleType="matrix"
in the xml for the ImageView, or
clickedImageView.setScaleType(ImageView.ScaleType.MATRIX);
if you want to do it in the code. Otherwise the matrix you have set will not be applied.
Upvotes: 3