关于UIView animateWithDuration weakSelf的疑问

Question

关于UIView animateWithDuration weakSelf的疑问

leaDongYang opened this issue 7 years ago · 4 comments

WEAK_SELF(weakSelf); CGFloat originHeight = self.contentLabel.frame.size.height; [UIView animateWithDuration:_maker.animationDuration animations:^{ weakSelf.frame = CGRectMake(weakSelf.fixedX, weakSelf.fixedY, weakSelf.fixedWidth, weakSelf.standardHeight + weakSelf.calculatedHeight - originHeight + 1); } completion:^(BOOL finished) { weakSelf.frame = CGRectMake(weakSelf.fixedX, weakSelf.fixedY, weakSelf.fixedWidth, weakSelf.standardHeight + weakSelf.calculatedHeight - originHeight + 1); }];
楼主你好，看到这里你写的weakSelf我想问下，为什么用weakSelf，这里应该并不具有循环强引用

pikacode commented 7 years ago

是哇

Answer 1 · 2017-12-09T15:32:27.000Z

居然偷看我源代码😲

Answer 2 · 2017-12-09T15:33:36.000Z

你之前的问题到底解决没解决啊

Answer 3 · 2017-12-10T02:15:42.000Z

我不用keywindow了，就好了，因为我自己封装的控件也用UIVIew animation，这里不需要weakSelf吧