retain circle 导致timerLabel不能释放

mineschan / MZTimerLabel

A handy class for iOS to use UILabel as a countdown timer or stopwatch just like in Apple Clock App.

MIT License

1.57k stars 247 forks source link

Open Shulin-Zhang opened 8 years ago

Shulin-Zhang commented 8 years ago

(UILabel*)timeLabel { if (_timeLabel == nil) { _timeLabel = self; } return _timeLabel; }

如果_timeLabel = self，由于self.timerLabel是strong，会形成retainCircle

2 timer 和self 也会形成retain circle，需要在不使用timer时调用一下cleanTimerLabel，比如在一个ViewController的dealloc中调用cle anTimerLabel