PhotoViewAttacher.java 文件源码

/**
 * @return true if the ScaleType is supported.
 */
private static boolean isSupportedScaleType(final ScaleType scaleType) {
    if (null == scaleType) {
        return false;
    }

    switch (scaleType) {
    case MATRIX:
        throw new IllegalArgumentException(scaleType.name()
                + " is not supported in PhotoView");

    default:
        return true;
    }
}