android 从网络上下载图片

下载图片比较简单 不过有个需要注意的是下载的图片不能太大要不然BitmapFactory在创建BItmap的时候会报OutOfMemoryError这个错

  下面上代码

public Bitmap readImageBitmap(String downUrl) {
		Bitmap bitmap = null;
		HttpURLConnection conn=null;
		
		try {
			URL url = new URL(downUrl);
			 conn = (HttpURLConnection) url.openConnection();
			conn.setDoInput(true);
			conn.connect();
			InputStream inputStream = conn.getInputStream();
			 BitmapFactory.Options opt = new BitmapFactory.Options();
			 opt.inPreferredConfig = Bitmap.Config.RGB_565;
			 opt.inPurgeable = true;
			 opt.inInputShareable = true;
			 bitmap = BitmapFactory.decodeStream(inputStream,null,opt);
			

		} catch (MalformedURLException e1) {
			e1.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}

		return bitmap;
	}

 

 如果有哪位大侠知道如何处理加载图片过大因BItmap而引起的OutOfMemoryError的方法  麻烦留个言   谢谢！！！！