iOS 上下左右手势识别

- (void)viewDidLoad {  
//建立滑动手势
    UISwipeGestureRecognizer *recognizer;   
    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)];   
//设置滑动方向，下面以此类推
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)];   
    [[self view] addGestureRecognizer:recognizer];   
    [recognizer release];  
 
     recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)];   
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionUp)];   
    [[self view] addGestureRecognizer:recognizer];   
    [recognizer release];   
      
    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)];   
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];  
    [[self view] addGestureRecognizer:recognizer];   
    [recognizer release];   
      
    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)];   
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionLeft)];   
    [[self view] addGestureRecognizer:recognizer];   
    [recognizer release];  
  
    [super viewDidLoad];  
 }  
  
//这个是协议回调，所以需要遵循 UIGestureRecognizerDelegate协议
-(void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer {   
     NSLog(@"Swipe received.");    www.zzzyk.com
     if (recognizer.direction==UISwipeGestureRecognizerDirectionDown) {   
                NSLog(@"向下滑动");  
    //执行程序  
     }  
     if (recognizer.direction==UISwipeGestureRecognizerDirectionUp) {   
    
NSLog(@"向上滑动");  
    //执行程序  
     }  
     if (recognizer.direction==UISwipeGestureRecognizerDirectionLeft) {   
    
NSLog(@"向左滑动");  
    //执行程序  
     }  
     if (recognizer.direction==UISwipeGestureRecognizerDirectionRight) {   
    
NSLog(@"向右滑动");  
    //执行程序  
     }  
}  

补充：移动开发 , IOS ,

上一个：<iOS>网络编程SOAP, WSDL, Web Service
下一个：iOS 开发总结