tim=[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(repeatTim) userInfo:nil repeats:YES]; [[NSRunLoop mainRunLoop] addTimer:tim forMode:NSDefaultRunLoopMode];
这是我班级的NSTimer属性.
然后我点击按钮就停止它
[[fbt tim] invalidate]; [fbt setTim:nil];
fbt它是我班级的实例.
如果我只调用invalidate然后它不会停止,但如果我将它设置为nil然后我得到了EXC_BREAKPOINT
AppDelegate *appDelegate = [[UIApplication sharedApplication]delegate]; [appDelegate.wbv stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"intal()"]];
我试着调用init并使其无效
dispatch_async(dispatch_get_main_queue(),^{})
它也不会停止计时器.
解决方法
There are three ways to create a timer:
Use the scheduledTimerWithTimeInterval:invocation:repeats: or scheduledTimerWithTimeInterval:target:selector:userInfo:repeats: class method to create the timer and schedule it on the current run loop in the default mode.
Use the timerWithTimeInterval:invocation:repeats: or timerWithTimeInterval:target:selector:userInfo:repeats: class method to create the timer object without scheduling it on a run loop. (After creating it,you must add the timer to a run loop manually by calling the addTimer:forMode: method of the corresponding NSRunLoop object.)
Allocate the timer and initialize it using the initWithFireDate:interval:target:selector:userInfo:repeats: method. (After creating it,you must add the timer to a run loop manually by calling the addTimer:forMode: method of the corresponding NSRunLoop object.)
您正在使用已将其从1添加到mainLoop的方法. – 您需要删除此行或使用2.方法创建计时器并保留手动添加.
还要记住,必须从安装了计时器的线程发送无效消息.如果从另一个线程发送此消息,则可能无法从其运行循环中删除与计时器关联的输入源,这可能会阻止线程正常退出.
