使用Picasso框架把网络图片转换成Bitmap

try {
Bitmap bitmap = Picasso.with(context).load(song.getImage()).get();
} catch (IOException e) {
e.printStackTrace();
}

其他办法：
URL url = new URL("http://qpic.y.qq.com/music_cover/8eiaDBJ27yYicpMibYZmmEdNGjF1cicV65ic11PNenswv6nfdNKBo5r4LVg/300?n=1");
InputStream is = url.openStream();
Bitmap bitmap = BitmapFactory.decodeStream(is);
is.close();

使用以上代码即可！