PhotoViewAttacher.java 文件源码

@Override
public boolean setDisplayMatrix(Matrix finalMatrix) {
    if (finalMatrix == null)
        throw new IllegalArgumentException("Matrix cannot be null");

    ImageView imageView = getImageView();
    if (null == imageView)
        return false;

    if (null == imageView.getDrawable())
        return false;

    mSuppMatrix.set(finalMatrix);
    setImageViewMatrix(getDrawMatrix());
    checkMatrixBounds();

    return true;
}