Zoom doesn't work with double-tapes

[houdaichang]

🐛 Bug Report

Expected behavior

Reproduction steps

Configuration

Version: 1.x

Platform: 🤖 Android 9.x
Sometimes with a double-tap on the view, the zoom does not work.
After downloading the library and spreading the logs, I found a place where the code behaves differently than with a successful response.
PhotoViewAttacher -> OnGestureListener onGestureListener -> onScale
if (getScale() < mMaxScale || scaleFactor < 1f) {...}
This condition does not always work with double-tapes. Zoom does not work.
However, if you double-tap again, the zoom will work.