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// 当手指开始触摸view // NSArray,字典,NSSet(无序) - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { NSLog(@"%ld", touches.count); NSLog(@"%s",__func__); } // 当手指在view上移动的时候 - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { NSLog(@"%s",__func__); // 获取UITouch对象 UITouch *touch = [touches anyObject]; // 获取当前点 CGPoint curP = [touch locationInView:self]; // 获取上一个点 CGPoint preP = [touch previousLocationInView:self]; // 获取x轴偏移量 CGFloat offsetX = curP.x - preP.x; // 获取y轴偏移量 CGFloat offsetY = curP.y - preP.y; // 修改view的位置(frame,center,transform) self.transform = CGAffineTransformTranslate(self.transform, offsetX, offsetY); // self.transform = CGAffineTransformMakeTranslation(offsetX, 0); } // 当手指离开这个view的时候 - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{ NSLog(@"%s",__func__); } // 当触摸事件被打断的时候调用(电话打入) - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event { NSLog(@"%s",__func__); }
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原文地址:http://www.cnblogs.com/jukaiit/p/5572100.html