UIButton长按事件

添加长按事件

 1 - (void)viewDidLoad
 2 {
 3     [super viewDidLoad];
 4     // Do any additional setup after loading the view, typically from a nib.
 5     
 6     UIButton *aBtn=[UIButton buttonWithType:UIButtonTypeRoundedRect];
 7     [aBtn setFrame:CGRectMake(0, 10, 60, 60)];
 8     [aBtn setBackgroundColor:[UIColor redColor]];
 9     //button点击事件
10     [aBtn addTarget:self action:@selector(btnShort) forControlEvents:UIControlEventTouchUpInside];
11     //button长按事件
12     UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(btnLong:)];
13     longPress.minimumPressDuration = 0.5; //定义按的时间
14     [aBtn addGestureRecognizer:longPress];
15     
16     [self.view addSubview:aBtn];
17 }
18 -(void)btnShort
19 {
20     NSLog(@"de");
21 }
22 -(void)btnLong:(UILongPressGestureRecognizer *)gestureRecognizer{
23     if ([gestureRecognizer state] == UIGestureRecognizerStateBegan) {
24         NSLog(@"长按事件");
25         UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"消息" message:@"确定删除该模式吗？" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"删除", nil];
26         [alert show];
27     }
28 }

更多介绍

//加个 longPressGesture ，设置如下：
UILongPressGestureRecognizer *pahGestureRecognizer=[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressGestureRecognizerStateChanged:)];
pahGestureRecognizer.delegate = self; //指定委托
pahGestureRecognizer.minimumPressDuration = 0.3; //最少按压响应时间
[scrollView addGestureRecognizer:pahGestureRecognizer];//指定对象为scrollView
//[pahGestureRecognizer release];
//实现委托方法：判断手势状态 动作开始、移动变化、结束
- (void)longPressGestureRecognizerStateChanged:(UIGestureRecognizer *)gestureRecognizer
{
    switch (gestureRecognizer.state)
    {
        case UIGestureRecognizerStateBegan:
        {
            
        }
        case UIGestureRecognizerStateChanged:
        {
            
        }
        case UIGestureRecognizerStateEnded:
        {
            
        }      
    }
}

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//如果你打开横向或纵向的滚动条，这里可以设置滚动条的风格
    // UIScrollViewIndicatorStyleDefault, 默认风格
    // UIScrollViewIndicatorStyleBlack,   黑色风格
    // UIScrollViewIndicatorStyleWhite    白色风格
    //[_scrollView setIndicatorStyle:UIScrollViewIndicatorStyleBlack]

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