ImageUtils.java 文件源码

public static Bitmap cropImage(String path, int top, int left, int right, int bottom) throws IOException {
    // only accept file path.
    if(path.startsWith("file:/")) {
        path = path.substring("file:/".length());
    }
    BitmapRegionDecoder regionDecoder = BitmapRegionDecoder.newInstance(path, false);
    Rect rect = new Rect(left, top, right, bottom);
    return regionDecoder.decodeRegion(rect, new BitmapFactory.Options());
}