Android PhotoView SetDisplayMatrix

I am using https://github.com/chrisbanes/PhotoView and trying to top crop it using setDisplayMatrix method. Based on issue: https://github.com/chrisbanes/PhotoView/issues/185 It sh

Solution 1:

Extending the default PhotoView and overriding setImageDrawable did the trick for me.

@Override
public void setImageDrawable(Drawable drawable) {
    super.setImageDrawable(drawable);

    Matrix m = getDisplayMatrix();
    float[] values = new float[9];
    m.getValues(values);

    if (values[5] < 0.0f) {
        m.postTranslate(0, -2 * values[5]);
        setDisplayMatrix(m);
    }
}