定时器_随笔

NStimer

[NStimer  timerWithTimeInteraval:   target:   selector@selector( ) userInfo: repeats: ];
NSRunLoop *runloop = [NSRunLoop currentRunLoop];
[runloop addTimer:timer forMode:NSDefaultRunLoopMode];

[NStimer scheduledTimerWithTimeInteralval:   target:    selector:@selector( )  userInfo:   repeats: ];
 
//拖拽时候  销毁定时器
//松手时候 重新创建定时器
//线程问题 NSCommentModes解决 加入到NSRunLoop消息循环中、