iphone中的触摸手势判断,滑动,单击,双击

////////////////////////////////////////////////////////////

触摸手势

//定义UISwipeGestureRecognizer变量
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];
    
    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];
    [[self view] addGestureRecognizer:recognizer];
    [recognizer release];

 

//单击
    UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];
    //双击
    UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)];
    
    [doubleTap setNumberOfTapsRequired:2];
    
    [self.view addGestureRecognizer:singleTap];
    
    [self.view addGestureRecognizer:doubleTap];
    [singleTap requireGestureRecognizerToFail:doubleTap];
    [singleTap release];
    [doubleTap release];

//根据动作触发相应的事件
//----------------------------------触发事件-------------------------
-(void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer {   
    if (recognizer.direction==UISwipeGestureRecognizerDirectionLeft) {
        NSLog(@"swipe down");
        [self doAnimationsUp];
        [pdfview goDownPage];
    }
    if (recognizer.direction==UISwipeGestureRecognizerDirectionRight) {
        NSLog(@"swipe up");
        [self doAnimationsPre];
        [pdfview goUpPage];
    }
}
- (void)handleSingleTap:(UIGestureRecognizer *)gestureRecognizer {
    NSLog(@"singletap!");   

    [self btnBack];
}

- (void)handleDoubleTap:(UIGestureRecognizer *)gestureRecognizer {
   
    NSLog(@"doubleClick!");
}