ios - 如何使 NSTimer 失效？

Question

self.timerProgress=[NSTimer scheduledTimerWithTimeInterval:50.0 target:self selector:@selector(stopProgressView) userInfo:nil repeats:NO];

-(void)stopProgressView
{
    if ([self.timerProgress isValid]) {
        [self.timerProgress invalidate];
        self.timerProgress=nil;
    }  

}

当我试图使 NSTimer 对象无效时单击按钮

-(void)cancelTimer
{
       if ([self.timerProgress isValid]) {
            [self.timerProgress invalidate];
            self.timerProgress=nil;
        }   
}

它不会失效。它在间隔 50 后调用一次 stopProgressView。如何解决这个问题？

Answer 1

- (IBAction)stopTimer {
    if ([timerProgress isValid]) {
        [timerProgress invalidate];
    }
}

不要使用 self.timerProgress 只使用 timerProgress