How to pause a NSTimer? [duplicate] - ios

Question

This question already has answers here:
How can I programmatically pause an NSTimer?
(16 answers)
Closed 9 years ago.
I have a game which uses a timer. I want to make it so the user can select a button and it pauses that timer and when they click that button again, it will unpause that timer. I already have code to the timer, just need some help with the pausing the timer and the dual-action button.
Code to timer:
-(void)timerDelay {
mainInt = 36;
timer = [NSTimer scheduledTimerWithTimeInterval:1.0
target:self
selector:#selector(countDownDuration)
userInfo:nil
repeats:YES];
}
-(void)countDownDuration {
MainInt -= 1;
seconds.text = [NSString stringWithFormat:#"%i", MainInt];
if (MainInt <= 0) {
[timer invalidate];
[self delay];
}
}

Answer 1

That's very easy.
// Declare the following variables
BOOL ispaused;
NSTimer *timer;
int MainInt;
-(void)countUp {
if (ispaused == NO) {
MainInt +=1;
secondField.stringValue = [NSString stringWithFormat:#"%i",MainInt];
}
}
- (IBAction)start1Clicked:(id)sender {
MainInt=0;
timer=[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:#selector(countUp) userInfo:Nil repeats:YES];
}
- (IBAction)pause1Clicked:(id)sender {
ispaused = YES;
}
- (IBAction)resume1Clicked:(id)sender {
ispaused = NO;
}

Answer 2

There is no pause and resume functionality in NSTimer. You can impliment it like below code.
- (void)startTimer
{
m_pTimerObject = [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:#selector(fireTimer:) userInfo:nil repeats:YES];
}
- (void)fireTimer:(NSTimer *)inTimer
{
// Timer is fired.
}
- (void)resumeTimer
{
if(m_pTimerObject)
{
[m_pTimerObject invalidate];
m_pTimerObject = nil;
}
m_pTimerObject = [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:#selector(fireTimer:) userInfo:nil repeats:YES];
}
- (void)pauseTimer
{
[m_pTimerObject invalidate];
m_pTimerObject = nil;
}