如何同时实现两个UIButton？

Question

我创建了2个UIButton（不同的标签）并连接到1个动作，但是当同时按下时，它会以小的延迟触发2个动作。

- (IBAction)keysPress:(UIButton *)sender { 
    UIButton *butOne = (UIButton *)[sender viewWithTag:0]; 
    UIButton *butTwo = (UIButton *)[sender viewWithTag:1]; 
    NSLog(@"BUT 1: %@ || BUT 2: %@",butOne, butTwo); 
} 

一直记录2倍：

2013-02-19 09:37:40.933 TestActions[1107:c07] BUT 1: <UIButtonLabel: 0xca4d450; frame = (65 67; 9 19); text = 'â'; clipsToBounds = YES; opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0xca4d4c0>> || BUT 2: <UIRoundedRectButton: 0xca4d310; frame = (161 164; 139 153); opaque = NO; autoresize = RM+BM; tag = 1; layer = <CALayer: 0xca4d270>> 

2013-02-19 09:37:40.935 TestActions[1107:c07] BUT 1: <UIRoundedRectButton: 0xca4c5c0; frame = (20 164; 135 153); opaque = NO; autoresize = RM+BM; layer = <CALayer: 0xca4c6b0>> || BUT 2: (null) 

如何控制这种情况？ 2Buttons，1动作 - 射击1次。

Answer 1

- (IBAction)keysPress:(UIButton *)sender { 
    if(_canClick) 
    { 
     _canClick = NO; 
     UIButton *butOne = (UIButton *)[sender viewWithTag:0]; 
     UIButton *butTwo = (UIButton *)[sender viewWithTag:1]; 
     NSLog(@"BUT 1: %@ || BUT 2: %@",butOne, butTwo); 
     [self performSelector:@selector(makeButtonCanClick) withObject:nil afterDelay:YOURTIMEINTERVAL]; 
    } 

} 

- (void)makeButtonCanClick 
{ 
    _canClick = YES; 
} 

_canClick是BOOL ivar，默认为YES

Answer 2

您似乎不明白sender是什么。发件人是触发该事件的按钮，您可以根据其内容进行编程。

您需要保存对按钮的引用，然后在输入函数时将它们与发件人进行比较。

@property (nonatomic, weak) IBOutlet UIButton *butOne; 
@property (nonatomic, weak) IBOutlet UIButton *butTwo; 

-(IBAction)keysPress:(UIButton *)sender { 
    if(sender == [self butOne]) { 
     //Do button one actions 
    } 

    if(sender == [self butTwo]) { 
     //Do button two actions 
    } 
} 

如果你不想让引用和使用viewWithTag的东西，我真的不建议它，但如果你这样做，你可以：

- (IBAction)keysPress:(UIButton *)sender { 
    UIButton *butOne = (UIButton *)[self viewWithTag:1]; 
    UIButton *butTwo = (UIButton *)[self viewWithTag:2]; 
    if(sender == butOne) { 
     //Do button one actions 
    } 

    if(sender == butTwo) { 
     //Do button two actions 
    } 
}