NSTimer Pause timer [duplicate] - ios

Question

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Closed 10 years ago.
Possible Duplicate:
How to Pause/Play NSTimer?
I have three buttons start stop and pause..My start and stop button is working fine with the below code..but when press Pause it pause the timer..but when again i Press start.IT continues from the new added time ...not from the pause time....
supoose i pause at 5 second of start and wait for 5 sec then press start...it should display 5 ...but displaying 10..
because I have not mentioned (timer:) in timer!=nill of start...
how it will be add..
I have problems:
Pause not working.
-(void)start:(NSTimer *)timer
{
if(_timer==nil)
{
startDate =[NSDate date];
_timer=[NSTimer scheduledTimerWithTimeInterval:0.25 target:self selector:#selector(timer:) userInfo:nil repeats:YES];
}
if(_timer!=nil)
{
float pauseTime = -1*[pauseStart timeIntervalSinceNow];
[_timer setFireDate:[previousFireDate initWithTimeInterval:pauseTime sinceDate:previousFireDate]];
}
}
-(void)timer:(NSTimer *)timer
{
NSInteger secondsSinceStart = (NSInteger)[[NSDate date] timeIntervalSinceDate:startDate];
NSInteger seconds = secondsSinceStart % 60;
NSInteger minutes = (secondsSinceStart / 60) % 60;
NSInteger hours = secondsSinceStart / (60 * 60);
NSString *result = nil;
if (hours > 0)
{
result = [NSString stringWithFormat:#"%02d:%02d:%02d", hours, minutes, seconds];
}
else
{
result = [NSString stringWithFormat:#"%02d:%02d", minutes, seconds];
}
label.text=result;
NSLog(#"time interval -> %#",result);
}
-(void)stop
{
if(_timer!=nil)
{
startDate=nil;
[_timer invalidate];
_timer = nil;
}
}
-(void)pause:(NSTimer *)timer
{
pauseStart = [NSDate dateWithTimeIntervalSinceNow:0];
previousFireDate = [_timer fireDate];
[_timer setFireDate:[NSDate distantFuture]];
}

Answer 1

-(void)pause:(NSTimer *)timer
{
pauseStart = [NSDate dateWithTimeIntervalSinceNow:0];
previousFireDate = [_timer fireDate];
//[timer setFireDate:[NSDate distantFuture]];
[_timer setFireDate:[NSDate distantFuture]];
}

Answer 2

Here is the code that I used for a timer:
I store all the components for the time, in my (singleton) class, the hour, minute, seconds value.
And, I simply "invalidate" the timer in the "pause" method, AND I store the values.
See, if this helps.
-(void) startTimer
{
NSLog(#"Values for timer: %d H, %d M, %d S", self.hours, self.minutes, self.seconds);
_timer = [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:#selector(updateTimer) userInfo:nil repeats:YES];
}
-(void) pauseTimer
{
if(_timer)
{
[_timer invalidate];
}
_timer = nil;
self.hour = hourValue;
self.minute = minuteValue;
self.second = secondsValue;
}