今天突然试了一下timer在线程中启动,果然不行,看了一下之前调研过的文章,解决方案就是放在主线程或者放在runloop即可

- (void)viewDidLoad
{
    [super viewDidLoad];
    
	dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        
        dispatch_async(dispatch_get_main_queue(), ^{
            NSTimer *time =  [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(test) userInfo:Nil repeats:YES];
        });
        
//        [[NSRunLoop currentRunLoop] addTimer:time forMode:NSDefaultRunLoopMode];
//        [[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:INTMAX_MAX]];
//        [time fire];
    });
}

- (void)test{
    NSLog(@"11");
}

NSTimer启动失效的解决方案