Question

I am implementing one iphone game application in which I want to find out time between touch begin and touch end event.

Is it possible?

Please give me advice

Thanks in advance

Answer 1

Yes this is possible. And this is very very easy.

You save the current time (i.e. [NSDate date]) when the touch starts, and get the difference between the current time when the touch ends and the saved start time.

@interface MyViewController : UIViewController {
    NSDate *startDate;
}
@property (nonatomic, copy) NSDate *startDate;

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    self.startDate = [NSDate date];

}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
    NSTimeInterval ti = [[NSDate date] timeIntervalSinceDate:self.startDate];
    NSLog(@"Time: %f", ti);
}