fix:Retain Cycle by NSTimer#23
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zox01 wants to merge 1 commit intodsxNiubility:masterfrom
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Open
fix:Retain Cycle by NSTimer#23zox01 wants to merge 1 commit intodsxNiubility:masterfrom zox01:master
zox01 wants to merge 1 commit intodsxNiubility:masterfrom
zox01:master
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NSTimer 在使用时要比较小心，当设置重复触发，NSTimer对象会强引用注册时的target，如果target本身又持有NSTimer对象，就造成了循环引用，可以通过引入中间对象通过弱引用持有接受回调的对象，然后以这个中间对象注册NSTimer对象，再在中间对象内部把消息转发给实际需要接受NSTimer回调消息的对象。具体可以参考Weak Reference to NSTimer Target To Prevent Retain Cycle