上下左右手势

港控/mmm° 2023-10-18 13:36 139阅读 0赞

-(void)viewDidLoad{
    
    UISwipeGestureRecognizer *recognizer; 
    
    recognizer = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeFrom:)];
    
         [recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)];
        [[self view] addGestureRecognizer:recognizer];
    [recognizer release];
        recognizer = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeFrom:)];
    
         [recognizer setDirection:(UISwipeGestureRecognizerDirectionLeft)];
        [[self view] addGestureRecognizer:recognizer];
    [recognizer release];
     
    recognizer = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeFrom:)];
    
         [recognizer setDirection:(UISwipeGestureRecognizerDirectionUp)];
        [[self view] addGestureRecognizer:recognizer];
    [recognizer release];
     
    
     
    UISwipeGestureRecognizer *recognizer;
    
        recognizer = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeFrom:)];
         [recognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];
        [[self view] addGestureRecognizer:recognizer];
    [recognizer release];
    
    
    }
    
    -(void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer{
    
    if(recognizer.direction==UISwipeGestureRecognizerDirectionDown) {
    
           NSLog(@"swipe down");
    //执行程序
    }
    if(recognizer.direction==UISwipeGestureRecognizerDirectionUp) {
    
           NSLog(@"swipe up");
    //执行程序
    }
    
    if(recognizer.direction==UISwipeGestureRecognizerDirectionLeft) {
    
           NSLog(@"swipe left");
    //执行程序
    }
    
    if(recognizer.direction==UISwipeGestureRecognizerDirectionRight) {
    
           NSLog(@"swipe right");
    //执行程序
    }
    
    }