本文介绍了如何在iPhone中的touchesBegan和touchend事件之间找到时间?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在实现一个iphone游戏应用程序,我想在其中找到触摸开始和触摸结束事件之间的时间.
I am implementing one iphone game application in which I want to find out time between touch begin and touch end event.
有可能吗?
请给我建议
预先感谢
推荐答案
是可以的.这非常非常容易.
Yes this is possible. And this is very very easy.
您保存触摸开始时的当前时间(即[NSDate date]),并获取触摸结束时的当前时间与保存的开始时间之间的差值.
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);
}
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