长按按钮

1. UIButton *aBtn=[UIButton buttonWithType:UIButtonTypeCustom];  
2.     [aBtn setFrame:CGRectMake(40, 100, 60, 60)];  
3.     [aBtn setBackgroundImage:[UIImage imageNamed:@"111.png"] forState:UIControlStateNormal];  
4. //button点击事件  
5.     [aBtn addTarget:self action:@selector(btnShort:) forControlEvents:UIControlEventTouchUpInside];  
6.     //button长按事件  
7.     UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(btnLong:)];   
8.     longPress.minimumPressDuration = 0.8; //定义按的时间  
9.     [aBtn addGestureRecognizer:longPress];  
10.   
11.   
12.   
13. -(void)btnLong:(UILongPressGestureRecognizer *)gestureRecognizer{  
14.     if ([gestureRecognizer state] == UIGestureRecognizerStateBegan) {  
15.         NSLog(@"长按事件");  
16.         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];  
17.         [alert show];  
18.     }  
19. }