As you can see, the FlickrView class is a subclass of ImageView.

可以看到，flickrview类是ImageView的子类。

youdao

Now this implementation is thread-safe: the network operation is done from a separate thread while the ImageView is manipulated from the UI thread.

以上代码的执行现在是线程安全的了：网络相关的操作在单独的线程里完成，而ImageView是在UI线程里操纵的。

youdao

Now this implementation is thread-safe: the network operation is done from a separate thread while the ImageView is manipulated from the UI thread.

现在的这个实现是线程安全的：网络操作在一个单独的线程中完成而在UI线程中操控。

youdao