问题描述
我是java新手,return;是什么意思?它像 break 吗?
I m new to java, what does return; mean? is it like break ?
public void run() { if(imageViewReused(photoToLoad)) return; Bitmap bmp=getBitmap(photoToLoad.url); memoryCache.put(photoToLoad.url, bmp); if(imageViewReused(photoToLoad)) return; BitmapDisplayer bd=new BitmapDisplayer(bmp, photoToLoad); Activity a=(Activity)photoToLoad.imageView.getContext(); a.runOnUiThread(bd); }
如果第二个 imageViewReused(photoToLoad) 返回 true,则 BitmapDisplayer bd=new BitmapDisplayer(bmp, photoToLoad) 不会被执行,对吧?
if the second imageViewReused(photoToLoad) returns true, BitmapDisplayer bd=new BitmapDisplayer(bmp, photoToLoad) won't be executed, right?
推荐答案
return 语句跳过函数作用域的剩余执行.
Return statement skips the remaining execution of a function scope.
值得一读:
- 返回:http://docs.oracle.com/javase/tutorial/java/javaOO/returnvalue.html
- break :http://docs.oracle.com/javase/tutorial/java/坚果和螺栓/branch.html