IOS开发中长按的手势事件编程

 1 //  长按事件
 2 #import "ViewController.h"
 3 @interface ViewController (){
 4     UIButton *myBtn;
 5 }
 6 @end
 7 @implementation ViewController
 8 - (void)viewDidLoad {
 9     [super viewDidLoad];
10     myBtn = [[UIButton alloc]initWithFrame:CGRectMake(100, 200, 214, 80)];
11     myBtn.backgroundColor = [UIColor orangeColor];
12     [myBtn setTitle:@"开始按钮" forState:UIControlStateNormal];
13     UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressAction:)];//初始化一个长按手势
14     [longPress setMinimumPressDuration:1];//设置按多久之后触发事件
15     [myBtn addGestureRecognizer:longPress];//把长按手势添加给按钮
16     [self.view addSubview:myBtn];
17 }
18 -(void)longPressAction:(UILongPressGestureRecognizer*)sender{
19 //    UIGestureRecognizerStatePossible,按钮state的各种枚举值
20 //    UIGestureRecognizerStateBegan,
21 //    UIGestureRecognizerStateChanged,
22 //    UIGestureRecognizerStateEnded,
23 //    UIGestureRecognizerStateCancelled,
24 //    UIGestureRecognizerStateFailed,
25 //    UIGestureRecognizerStateRecognized = UIGestureRecognizerStateEnded
26     if (sender.state == UIGestureRecognizerStateBegan) {
27          myBtn.backgroundColor = [UIColor greenColor];//当状态为Began时，触发事件（修改btn的背景色）
28     }
29 }
30 @end