IOS 页面手指滑动监听--

//一.对于普通View 手指滑动监听

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    UISwipeGestureRecognizer *recognizer;
    
    //right--
    recognizer = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeFrom:)];
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)];
    [[self view] addGestureRecognizer:recognizer];
    [recognizer release];
    //left---
    recognizer = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeFrom:)];
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionLeft)];
    [[self view] addGestureRecognizer:recognizer];
    [recognizer release];
    //up--
    recognizer = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeFrom:)];
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionUp)];
    [[self view] addGestureRecognizer:recognizer];
    [recognizer release];
    //down--
    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
    }
    
}

//二,对tableView的手指监听

//delegate--

UIScrollView *scrollView=(UIScrollView *)self.main_tableView;
scrollView.delegate=self;

//由此就可以根据 ContentOffset.y值判定就行相关处理了

if(scrollView.contentOffset.y < 0){
    NSLog(@"top*****");
    
}else if(scrollView.contentOffset.y > 0){
    NSLog(@"bottom*****");
    
}