放大图 带回弹效果

布局就是一个imagview

加依赖

implementation 'com.github.chrisbanes.photoview:library:1.2.4'
implementation 'com.android.support:support-v4:27.1.1'
调三方控件 photoview
参考地址：https://blog.csdn.net/dpl12/article/details/78160993

imageView = findViewById(R.id.imageView2);
        Intent intent = getIntent();
        String content = intent.getStringExtra("photo");

        Glide.with(this).load(content).into(imageView);
        imageView.setOnPhotoTapListener(new PhotoViewAttacher.OnPhotoTapListener() {
            @Override
            public void onPhotoTap(View view, float x, float y) {
                ActivityCompat.finishAfterTransition(OtherActivity.this);
            }
        });