I have a requirement with slight modification. This post retains the zoom on orientation change and making it centre. I don't want the image to be centre aligned. I just want the zoom to be maintained. How can this be achieved? Any help will be highly appreciated.
Retain zoom in photoview without centre aligining
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I achieved the desired behaviour after so much brain storming. Idea is to save the previous matrix and zoom scale of the image and then populate the previously stored matrix on the image. Fetching the previous values:
Now attach
photoView.getViewTreeObserver().addOnPreDrawListener(this);
Populate the above matrix when image is zoomedonPreDraw()
method like this:Hope this helps someone.