【代码笔记】iOS-可以向左（右）滑动

一，效果图。

二，代码。

RootViewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    self.title=@"可以向左（右）滑动";
    
    //向右滑动
    UISwipeGestureRecognizer *recognizerLeft;
    recognizerLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFromLeft:)];
    [recognizerLeft setDirection:(UISwipeGestureRecognizerDirectionLeft)];
    [self.view addGestureRecognizer:recognizerLeft];
    
    //向左滑动
    UISwipeGestureRecognizer *recognizerRight;
    recognizerRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFromRight:)];
    [recognizerRight setDirection:(UISwipeGestureRecognizerDirectionRight)];
    [self.view addGestureRecognizer:recognizerRight];

}
#pragma -mark -手势滑动
//向左滑动
-(void)handleSwipeFromLeft:(UISwipeGestureRecognizer *)recognizer {
    
    NSLog(@"-------进入向左手势滑动姿势-------------");
    if (recognizer.direction==UISwipeGestureRecognizerDirectionLeft) {
        
        UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"提醒" message:@"进入向左手势滑动姿势" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
        [alert show];
        
        
    }
}
//向右滑动
-(void)handleSwipeFromRight:(UISwipeGestureRecognizer *)recognizer {
    
    NSLog(@"-------进入向右手势滑动姿势-------------");
    if (recognizer.direction==UISwipeGestureRecognizerDirectionRight) {
        
        UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"提醒" message:@"进入向右手势滑动姿势" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
        [alert show];
        
    }
}