今天是3月15号国际消费者权益日，现在就记录下有关@selector的相关问题。
1 增加手势：
UITapGestureRecognizer *oneFingerTwoTaps =
[[[UITapGestureRecognizer alloc] initWithTarget:self action:
@selector(oneFingerTwoTaps:)] autorelease];
// Set required taps and number of touches
[oneFingerTwoTaps setNumberOfTapsRequired:2];
[oneFingerTwoTaps setNumberOfTouchesRequired:1];
// Add the gesture to the view
[[self view] addGestureRecognizer:oneFingerTwoTaps];
- (void)oneFingerTwoTaps:(UITapGestureRecognizer *)recognizer
{
UIView *viewT = [recognizer view];
if (viewT.tag==0)
{
NSLog(@"Action: One finger, two taps");
}
}
如果要带一个参数的话，@selector(里头必须有一个“：”)；
如果是没有带参数的话，请看下面的代码:同样也是看红色的部分。若@selector没有带参数的话，@selector(里头不需要有“:”)
UITapGestureRecognizer *oneFingerTwoTaps =
[[[UITapGestureRecognizer alloc] initWithTarget:self action:
@selector(oneFingerTwoTaps)] autorelease];
// Set required taps and number of touches
[oneFingerTwoTaps setNumberOfTapsRequired:2];
[oneFingerTwoTaps setNumberOfTouchesRequired:1];
// Add the gesture to the view
[[self view] addGestureRecognizer:oneFingerTwoTaps];
- (void)oneFingerTwoTaps
{
UIView *viewT = [recognizer view];
if (viewT.tag==0)
{
NSLog(@"Action: One finger, two taps");
}
}
以上是我的心得。