IOS开发中长按的手势事件编程

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长按手势事件：

长按按钮1S后改变按钮颜色：

 //  长按事件

 #import "ViewController.h"

 @interface ViewController (){

     UIButton *myBtn;

 }

 @end

 @implementation ViewController

 - (void)viewDidLoad {

     [super viewDidLoad];

     myBtn = [[UIButton alloc]initWithFrame:CGRectMake(, , , )];

     myBtn.backgroundColor = [UIColor orangeColor];

     [myBtn setTitle:@"开始按钮" forState:UIControlStateNormal];

     UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressAction:)];//初始化一个长按手势

     [longPress setMinimumPressDuration:];//设置按多久之后触发事件

     [myBtn addGestureRecognizer:longPress];//把长按手势添加给按钮

     [self.view addSubview:myBtn];

 }

 -(void)longPressAction:(UILongPressGestureRecognizer*)sender{

 //    UIGestureRecognizerStatePossible,按钮state的各种枚举值

 //    UIGestureRecognizerStateBegan,

 //    UIGestureRecognizerStateChanged,

 //    UIGestureRecognizerStateEnded,

 //    UIGestureRecognizerStateCancelled,

 //    UIGestureRecognizerStateFailed,

 //    UIGestureRecognizerStateRecognized = UIGestureRecognizerStateEnded

     if (sender.state == UIGestureRecognizerStateBegan) {

          myBtn.backgroundColor = [UIColor greenColor];//当状态为Began时，触发事件（修改btn的背景色）

     }

 }

 @end