Question

in my app there are two views. view1 has a function testing

  -(void) testing
  {
       NSLog(@"Testing : %d", (++x));
  }

and a timer

  timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self   selector:@selector(testing) userInfo:nil repeats:YES];

what i want, is to stop and run this timer from view2. How to do that ?

Answer 1

Define Timer in AppDelegate,

@interface TimerDemoAppDelegate : NSObject <UIApplicationDelegate>
{
NSTimer *timer;
}

@property (nonatomic, retain) NSTimer *timer;

@end

And use timer in your both view by creating TimerDemoAppDelegate object
in your view .h file

@interface View1 : UIViewController
{
TimerDemoAppDelegate *appDelegate;
}

in your view .m file

appDelegate=(TimerDemoAppDelegate *)[[UIApplication sharedApplication] delegate];

now use timer as appDelegate.timer.