手势 UILongPressGestureRecognizer 长按手势

UILongPressGestureRecognizer * longPressGesture = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(handleLongpressGesture:)];

设置长按手势触发的时间

   longPressGesture.minimumPressDuration = 1;

    [redView addGestureRecognizer:longPressGesture];

    [longPressGesture release];

长按手势 可能会触发两次  (开始接触 和  结束接触 )   所以 长按手势要判断状态

- (void)handleLongpressGesture :(UILongPressGestureRecognizer *)longPressGesture
{
     当识别到长按手势时触发(长按时间到达之后触发)
    if (UIGestureRecognizerStateBegan ==longPressGesture.state) {
        longPressGesture.view.backgroundColor = [UIColor random];
    }
    
}