Java 实现ImageSwitcher功能| FileNotFoundException

我正在尝试使用Android Universal Image Loader实现ImageSwitcher功能， 下面是代码

public View getView(int position, View convertView, ViewGroup parent) {
            ImageView i = new ImageView(mContext);
            Uri uri = Uri.parse(imageUrls[position]);

            System.out.println("URI=" + uri);
         InputStream inputStream;
        try {
            **inputStream = getContentResolver().openInputStream(uri);**
            Bitmap bm= BitmapFactory.decodeStream(inputStream);

            i.setImageBitmap(bm);
            i.setAdjustViewBounds(true);

但是，我在以下位置获得FileNotFoundException：

但是当我尝试直接从web浏览器访问URI时，我看到了图像。图像URI的设置方式如下：

public static final String[] IMAGES = new String[] {

    "http://image.donga.com/mlbpark/fileUpload/201401/52dde15113c53b01da3b.jpg",
    "https://lh6.googleusercontent.com/-55osAWw3x0Q/URquUtcFr5I/AAAAAAAAAbs/rWlj1RUKrYI/s1024/A%252520Photographer.jpg",
    etc...

知道我哪里出错了吗

public static final String[] IMAGES = new String[] {

    "http://image.donga.com/mlbpark/fileUpload/201401/52dde15113c53b01da3b.jpg",
    "https://lh6.googleusercontent.com/-55osAWw3x0Q/URquUtcFr5I/AAAAAAAAAbs/rWlj1RUKrYI/s1024/A%252520Photographer.jpg",
    etc...