<uk.co.senab.photoview.PhotoView
    android:id="@+id/img_showimgview"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    />

photoview = (PhotoView) findViewById(R.id.img_showimgview);

photoview.setImageBitmap(bit);

photoview.setOnPhotoTapListener(new OnPhotoTapListener() {

    @Override
    public void onPhotoTap(View view, float x, float y) {
      // TODO Auto-generated method stub
      finish();

    }
  });

img_get_photo.setDrawingCacheEnabled(true); 
bitt = Bitmap.createBitmap(img_get_photo.getDrawingCache()); 
img_get_photo.setDrawingCacheEnabled(false);