大佬教程收集整理的这篇文章主要介绍了iphone – 如何在多个按钮上添加手势识别器?,大佬教程大佬觉得挺不错的,现在分享给大家,也给大家做个参考。
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@SELEctor(handleSingleTap:)]; [self.LeftBottomSpaceBtn addGestureRecognizer:singleTap]; [singleTap requireGestureRecognizerToFail:doubleTap]; [singleTap release];
它工作正常,但当我尝试将此手势添加到多个按钮时,它不起作用:
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@SELEctor(handleSingleTap:)]; [self.LeftBottomSpaceBtn addGestureRecognizer:singleTap]; [self.LeftUpSpaceBtn addGestureRecognizer:singleTap]; [self.RightBUpSpaceBtn addGestureRecognizer:singleTap]; [self.LeftReturnBtn addGestureRecognizer:singleTap]; [self.RightReturnBtn addGestureRecognizer:singleTap]; [self.deleteBtn addGestureRecognizer:singleTap]; [self.CapsBtn addGestureRecognizer:singleTap]; [singleTap requireGestureRecognizerToFail:doubleTap]; [singleTap release];
NSMutableSet *buttons = [[NSMutableSet alloc] init]; [buttons addObject: self.LeftBottomSpaceBtn]; [buttons addObject: self.LeftUpSpaceBtn]; [buttons addObject: self.RightBUpSpaceBtn]; [buttons addObject: self.LeftReturnBtn]; [buttons addObject: self.RightReturnBtn]; [buttons addObject: self.deleteBtn]; [buttons addObject: self.CapsBtn]; for(UIButton *button in buttons) { UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@SELEctor(handleSingleTap:)]; [button addGestureRecognizer:singleTap]; [singleTap requireGestureRecognizerToFail:doubleTap]; [singleTap release]; }
如果将集合保存为变量,您也可以为所有按钮执行其他操作,例如释放所有按钮并更改所有BACkgroundColors,而无需单独调用它们.
您可能还需要为每个按钮制作单独的双重识别器.
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