@Override

    public void onMediaScannerConnected() {

        Log.d("onMediaScannerConnected", "success  " + conn);

        Log.d("scanpath", "scanpath  " + scanpath);

        conn.scanFile(scanpath, "image/png");//主要是这里原本和上面的那个链接是一样的写成了"image/*" 然后各种报错，报找不到activity，其实可能是对于的格式自动匹配有问题，应用装了快播，竟然默认打开了快播，无力吐槽。最后更正，高了一个晚上

    }//媒体扫描

    @Override

    public void onScanCompleted(String s, Uri uri) {

        try {

            Log.d("onScanCompleted", uri + "success" + conn);

            System.out.println("URI " + uri);

            System.out.println("path" + path);

            if (uri != null) {

                Intent intent = new Intent(Intent.ACTION_VIEW);

                intent.setData(uri);

                Log.d("inten", "inten  " + intent.toString());

                startActivity(intent);

            }

        } finally {

            conn.disconnect();

            conn = null;

        }

    }//媒体扫描完毕