1.  - (void)viewDidLoad {  
2.     UISwipeGestureRecognizer *recognizer;   
3.     recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)];   
4.     [recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)];   
5.     [[self view] addGestureRecognizer:recognizer];   
6.     [recognizer release];  
7.      recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)];   
8.     [recognizer setDirection:(UISwipeGestureRecognizerDirectionUp)];   
9.     [[self view] addGestureRecognizer:recognizer];   
10.     [recognizer release];   
11.       
12.     recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)];   
13.     [recognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];  
14.     [[self view] addGestureRecognizer:recognizer];   
15.     [recognizer release];   
16.       
17.     recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)];   
18.     [recognizer setDirection:(UISwipeGestureRecognizerDirectionLeft)];   
19.     [[self view] addGestureRecognizer:recognizer];   
20.     [recognizer release];  
21.   
22.     [super viewDidLoad];  
23.  }  
24.   
25. -(void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer {   
26.      NSLog(@"Swipe received.");   
27.      if (recognizer.direction==UISwipeGestureRecognizerDirectionDown) {   
28.                 NSLog(@"swipe down");  
29.     //执行程序  
30. }  
31. if (recognizer.direction==UISwipeGestureRecognizerDirectionUp) {   
32.     NSLog(@"swipe up");  
33.     //执行程序  
34. }  
35. if (recognizer.direction==UISwipeGestureRecognizerDirectionLeft) {   
36.     NSLog(@"swipe left");  
37.     //执行程序  
38. }  
39. if (recognizer.direction==UISwipeGestureRecognizerDirectionRight) {   
40.     NSLog(@"swipe right");  
41.     //执行程序  
42. }  
43. }

（转）iphone上下左右手势判断代码