iPhone 上下左右代码判断
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- - (void)viewDidLoad {
- UISwipeGestureRecognizer *recognizer;
- recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:selfaction:@selector(handleSwipeFrom:)];
- [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];
- }
- -(void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer {
- NSLog(@"Swipe received.");
- 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
- }
- }
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
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