Set up a temporary timer iOS [duplicate] - objective-c

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Closed 10 years ago.
Possible Duplicate:
How to make a periodic call to a method in objective c?
I am making an app where when the user touches the screen, the following method is called:
- (void)explode:(int)x
The user only has to touch the screen once, but I want the method to be called repeatedly every 0.1 seconds for 100 times, and then it should stop being called.
Is there a way of setting up a 'temporary' timer like this on a method where an integer is being passed?

Answer 1

You could pass a counter and the 'x' as into the timer's userInfo. Try this:
Create the timer in the method that's catching the touch event and pass a counter and the int 'x' into the userInfo:
NSMutableDictionary *userInfo = [[NSMutableDictionary alloc] initWithCapacity:2];
[userInfo setValue:[NSNumber numberWithInt:x] forKey:#"x"];
[userInfo setValue:[NSNumber numberWithInt:0] forKey:#"counter"];
[NSTimer timerWithTimeInterval:0.1
target:self
selector:#selector(timerMethod:)
userInfo:userInfo
repeats:YES];
Create the timer method, check the userInfo's number count, and invalidate the timer after 100 times:
- (void)timerMethod:(NSTimer *)timer
{
NSMutableDictionary *userInfo = timer.UserInfo;
int x = [[userInfo valueForKey:#"x"] intValue];
// your code here
int counter = [[userInfo valueForKey:#"counter"] intValue];
counter++;
if (counter >= 100)
{
[timer invalidate];
}
else
{
[userInfo setValue:[NSNumber numberWithInt:x] forKey:#"x"];
[userInfo setValue:[NSNumber numberWithInt:counter] forKey:#"counter"];
}
}
Please also see the Apple docs on NSTimer:
https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/nstimer_Class/Reference/NSTimer.html