我一直在到处找，看看是否有实现这一目标的标准方法，但我觉得不同的解决方案的每个时间。

I've been looking everywhere to see if there is a standard way of achieving this but I find a different solution every-time.

基本上，我试图建立一个自定义的ListView 用图像和文字两三条线除了它。

Basically, I am trying to build a Custom ListView with an image and two-three lines of text besides it.

为了优化它，我明白，下面已经被使用：

In order to optimize it, I understand that the following have to be used:

convertView ：基本上，如果认为已经膨胀，用它

convertView: Basically if the view was already inflated, use it

延迟加载：直到他们被要求不要加载行的内容

Lazy-Loading: Do not load the content of the rows until they are called for

背景下载和放大器;缓存：在自己的线程下载图像，然后更新该行（？和可能的缓存它们）

Background Downloading & Caching: Download images in their own threads and then update the row (and possible cache them?)

我可以管理1和2，但第三个是真正困惑我。

I could manage 1 and 2 but the third one is really confusing me.

有没有最佳实践呢？

感谢

推荐答案

感谢马克对他的帮助。这是在做什么，他建议的一种方式（以防万一还有一些好奇）：

Thanks to Mark for his help. This is one way of doing what he suggested (just in case some else is curious):

private class DownloadImageTask extends AsyncTask<Object, Integer, Bitmap> {

    		private ImageView iv;

    		protected Bitmap doInBackground(Object... params) {
    			try {
    				iv = (ImageView) params[0];
    	            URL aURL = new URL("https://m.xsw88.com/allimgs/daicuo/20230907/4908.png" ); 
    	            URLConnection conn = aURL.openConnection(); 
    	            conn.connect(); 
    	            InputStream is = conn.getInputStream(); 
    	            BufferedInputStream bis = new BufferedInputStream(is); 
    	            Bitmap bm = BitmapFactory.decodeStream(bis); 
    	            bis.close(); 
    	            is.close();
    	            return bm;
    	       } catch (IOException e) { 
    	            return null;
    	       } 
    		}

    		protected void onPostExecute(Bitmap result) {
    			iv.setImageBitmap((Bitmap) result);
    		}
    	}

和如下它将被使用：

new DownloadImageTask().execute(new Object[] {ImageViewHandle, position});

请注意，这不是一个工作code。这是从一个较大的code底部取出，所以你将不得不做出适当的修改，以使这项工作。

Note that this is not a working code. This was taken from a larger code base so you will have to make appropriate changes to make this work.