IOS开发中长按的手势事件编程

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