Zoom in Zoom Out Image android

 Dependency:-

1.Implementation 'com.commit451:PhotoView:1.2.4'

JAVA Code:-  
PhotoViewAttacher pAttacher;
pAttacher = new PhotoViewAttacher(Your_Image_View);
pAttacher.update();

2.//DoubleTap To Zoom dependncy (better)

implementation 'com.bogdwellers:pinchtozoom:0.1' 

//Add this code to your imagView

mImageView.setOnTouchListener(new ImageMatrixTouchHandler(itemView.getContext()));