老机器Bitmap预读仍然OOM，无奈增加一段，终于不崩溃了。

if (Build.VERSION.SDK_INT < 21)size = 2;

完整代码： 

Bitmap bitmap;
try {//Log.e(Thread.currentThread().getStackTrace()[2] + "", surl);URL url = new URL(surl);HttpURLConnection conn = (HttpURLConnection)url.openConnection();InputStream IS = conn.getInputStream();BitmapFactory.Options options = new BitmapFactory.Options();options.inJustDecodeBounds = true; //开启只读尺寸bitmap = BitmapFactory.decodeStream(IS, null, options); //图片太大会崩溃WindowManager WM = (WindowManager)getSystemService(Context.WINDOW_SERVICE);DisplayMetrics DM = new DisplayMetrics();WM.getDefaultDisplay().getMetrics(DM);int size = 1;if (Build.VERSION.SDK_INT < 21)size = 2;else {if (options.outWidth > DM.widthPixels) {size = options.outWidth / DM.widthPixels;}}options.inSampleSize = size; //缩小比例Log.e(Thread.currentThread().getStackTrace()[2] + "", "if (" + options.outWidth + " > " + DM.widthPixels + ") inSampleSize = " + size);options.inJustDecodeBounds = false; //关闭只读尺寸conn = (HttpURLConnection)url.openConnection(); //InputStream使用后自动清空，需要重新获取IS = conn.getInputStream();bitmap = BitmapFactory.decodeStream(IS, null, options); //java.lang.OutOfMemoryErrorMessage message = new Message();message.what = what;Bundle bundle = new Bundle();bundle.putString("url", surl);bundle.putParcelable("bitmap", bitmap);message.setData(bundle);handler.sendMessage(message);
} catch (Exception e) {Log.e(Thread.currentThread().getStackTrace()[2] + "", e.toString());
}

然而，媒体播放报错：Prepare failed，只好放弃了。