如何同時實現兩個UIButton？

Question

我創建了2個UIButton（不同的標籤）並連接到1個動作，但是當同時按下時，它會以小的延遲觸發2個動作。

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

一直記錄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) 

如何控制這種情況？ 2Buttons，1動作 - 射擊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，默認爲YES

Answer 2

您似乎不明白sender是什麼。發件人是觸發該事件的按鈕，您可以根據其內容進行編程。

您需要保存對按鈕的引用，然後在輸入函數時將它們與發件人進行比較。

@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 
    } 
} 

如果你不想讓引用和使用viewWithTag的東西，我真的不建議它，但如果你這樣做，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 
    } 
}