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(100, 200, 214, 80)];
    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:1];//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