Stop timer from UIVIEWSUBCLASS

alok14ecc@gmail.com · August 2012

I have start a timer to call a method after 10 seconds. the timer start from didFinishLaunchingWithOptions. it works fine but I want to stop that timer from another UISubclass at the time of logout. How I can do this my code is

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 
{  
    [NSThread sleepForTimeInterval:2.0];

    [self.window addSubview:viewController.view];
    [self setupTimer];
    [self.window makeKeyAndVisible];

    return YES;
}
-(void)setupTimer;
{
    timer = [NSTimer timerWithTimeInterval:10 
                                    target:self
                                  selector:@selector(triggerTimer:)
                                  userInfo:nil
                                   repeats:YES];
    [[NSRunLoop mainRunLoop] addTimer:timer forMode:NSRunLoopCommonModes];
}

-(void)triggerTimer:(NSTimer*)timer;
{
    Getlocation *object=[[Getlocation alloc] init];
    [object updatelocation];
}
  -(void)stopTimer:(NSTimer*)timer;
 {
   [timer invalidate];
   timer=nil;
 }

Duncan C · August 2012

First, don't ever use sleep or sleepForTimeInterval. That blocks your app, and the system is likely to terminate you for being unresponsive. Instead, factor your code like this:

- (void) finishLaunching
{
    [self.window addSubview:viewController.view];
    [self setupTimer];
    [self.window makeKeyAndVisible];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 
{  
    [self performSelector: @selector(finishLaunching) withObject: nil afterDelay: 2.0];
    return YES;

    return YES;
}

Second, if you want to be able to stop the timer from another class, add a stopTimer method to your app delegate. Make your app delegate a custom class like MyDelegate and make the stopTimer method a public method.

Then from anywhere in your program, do this:

MyDelegate *delegate = (MyDelegate *)[UIApplication sharedApplication].delegate;
[delegate stopTimer];

alok14ecc@gmail.com · August 2012

@Duncan: thanks a ton to solving my problem.

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Stop timer from UIVIEWSUBCLASS

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