方法一

在touchesMoved中

// 获取到触摸的手指     UITouch *touch = [touches anyObject]; // 获取集合中对象     // 获取開始时的触摸点     CGPoint previousPoint = [touch previousLocationInView:self];     // 获取当前的触摸点     CGPoint latePoint = [touch locationInView:self];     // 获取当前点的位移量     CGFloat dx = latePoint.x - previousPoint.x;     CGFloat dy = latePoint.y - previousPoint.y;     // 获取当前视图的center     CGPoint center = self.center;     // 依据位移量改动center的值     center.x += dx;     center.y += dy;     // 把新的center赋给当前视图     self.center = center;

方法二

#pragma mark - 重写方法#pragma mark 触摸開始- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    UITouch *touch = [touches anyObject];    self.startPoint = [touch locationInView:self];    NSLog(@"%s",__FUNCTION__);}#pragma mark - 触摸移动- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{    NSLog(@"%s",__FUNCTION__);    // 实现touchview随手势移动    UITouch *touch = [touches anyObject];    self.endPoint = [touch locationInView:self];    CGFloat x = _endPoint.x - _startPoint.x;    CGFloat y = _endPoint.y - _startPoint.y;    CGPoint center = self.center;    center.x += x;    center.y += y;    self.center = center;}