iphone上下左右手势判断代码

-(void)viewDidLoad{
UISwipeGestureRecognizer*recognizer;
recognizer=[[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(handleSwipeFrom:)];
[recognizersetDirection:(UISwipeGestureRecognizerDirectionRight)];
[[selfview]addGestureRecognizer:recognizer];
[recognizerrelease];
recognizer=[[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(handleSwipeFrom:)];
[recognizersetDirection:(UISwipeGestureRecognizerDirectionUp)];
[[selfview]addGestureRecognizer:recognizer];
[recognizerrelease];

recognizer=[[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(handleSwipeFrom:)];
[recognizersetDirection:(UISwipeGestureRecognizerDirectionDown)];
[[selfview]addGestureRecognizer:recognizer];
[recognizerrelease];

recognizer=[[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(handleSwipeFrom:)];
[recognizersetDirection:(UISwipeGestureRecognizerDirectionLeft)];
[[selfview]addGestureRecognizer:recognizer];
[recognizerrelease];

[superviewDidLoad];
}

-(void)handleSwipeFrom:(UISwipeGestureRecognizer*)recognizer{
NSLog(@"Swipereceived.");
if(recognizer.direction==UISwipeGestureRecognizerDirectionDown){
NSLog(@"swipedown");
//执行程序
}
if(recognizer.direction==UISwipeGestureRecognizerDirectionUp){
NSLog(@"swipeup");
//执行程序
}
if(recognizer.direction==UISwipeGestureRecognizerDirectionLeft){
NSLog(@"swipeleft");
//执行程序
}
if(recognizer.direction==UISwipeGestureRecognizerDirectionRight){
NSLog(@"swiperight");
//执行程序
}
}

其他参考
http://www.cnblogs.com/wujian1360/archive/2011/08/29/2158305.html

http://o0o0o0o.iteye.com/blog/875333

http://blog.sina.com.cn/s/blog_6f40a0e70100p6bt.html