通常我們在專案中會遇到這樣的問題，點選一個button觸發一個事件，但總是會遇到連點的問題，如果是動畫，連點會讓你的動畫出現意想不到的情況。我在之前的專案中也遇到過類似的情況，上網搜過很多解決方法，但都沒有得到想要解決方案。前幾天在cocoachina一篇文章中得到啟發，自己寫了一Demo共享給大家。廢話不多說先上圖，沒圖說個jiba .

兩個button的點選事件完全相同，都是讓紅色的view的中心點從（25，89）到（200，500）但很明顯沒做控制的button在多次點選的情況下動畫不是我們想要的效果。

再上程式碼

@interface UIControl (YN)

@property (nonatomic, assign) NSTimeInterval hyn_acceptEventInterval;//新增點選事件的間隔事件

@property (nonatomic, assign) BOOL hyn_ignoreEvent;//

@end

#[email protected] UIControl (YN)

static const char *UIControl_acceptEventInterval = "UIControl_acceptEventInterval";

static const char *UIcontrol_ignoreEvent = "UIcontrol_ignoreEvent";

- (NSTimeInterval)hyn_acceptEventInterval {

return [objc_getAssociatedObject(self, UIControl_acceptEventInterval) doubleValue];

}

- (void)setHyn_acceptEventInterval:(NSTimeInterval)hyn_acceptEventInterval {

objc_setAssociatedObject(self, UIControl_acceptEventInterval, @(hyn_acceptEventInterval), OBJC_ASSOCIATION_RETAIN_NONATOMIC);

}

- (BOOL)hyn_ignoreEvent {

return [objc_getAssociatedObject(self, UIcontrol_ignoreEvent) boolValue];

}

- (void)setHyn_ignoreEvent:(BOOL)hyn_ignoreEvent {

objc_setAssociatedObject(self, UIcontrol_ignoreEvent, @(hyn_ignoreEvent), OBJC_ASSOCIATION_RETAIN_NONATOMIC);

}

+ (void)load {

Method a = class_getInstanceMethod(self, @selector(sendAction:to:forEvent:));

Method b = class_getInstanceMethod(self, @selector(__hyn_sendAction:to:forEvent:));

method_exchangeImplementations(a, b);

}

- (void)__hyn_sendAction:(SEL)action to:(id)target forEvent:(UIEvent *)event {

if (self.hyn_ignoreEvent) return;

if (self.hyn_acceptEventInterval > 0) {

self.hyn_ignoreEvent = YES;

[self performSelector:@selector(setHyn_ignoreEvent:) withObject:@(NO) afterDelay:self.hyn_acceptEventInterval];

}

[self __hyn_sendAction:action to:target forEvent:event];

}

@end

使用：

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIButton *button;//用Runtime做控制的button

@property (weak, nonatomic) IBOutlet UIView *colorView;//紅色的view

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

//設定一個延遲時間，為了方便觀察我這裡把動畫設定成三秒

self.button.hyn_acceptEventInterval = 3;

}

//Runtime控制的button點選事件

- (IBAction)runtimeAction:(UIButton *)sender {

[UIView animateWithDuration:3 animations:^{

self.colorView.center = CGPointMake(200, 500);

} completion:^(BOOL finished) {

self.colorView.center = CGPointMake(25, 89);

}];

}

//普通的buttonAction

- (IBAction)buttonAction:(UIButton *)sender {

[UIView animateWithDuration:3 animations:^{

self.colorView.center = CGPointMake(200, 500);

} completion:^(BOOL finished) {

self.colorView.center = CGPointMake(25, 89);

}];

}

@end

為了方便看程式碼截個圖，這年頭沒圖就是沒把發說事

你還在一個一個單獨控制多次點選嗎？採用Runtime的方法，讓你簡單到1行程式碼解決重複點選問題

self.button.hyn_acceptEventInterval = 0.xx;

就是那麼簡單。

文章靈感來自Cocoachina