一、在按鈕的點選事件中實現下面方法：

// 防止重複點選觸發多次請求

        [[selfclass] cancelPreviousPerformRequestsWithTarget:selfselector:@selector(zan:) object:sender];

        [selfperformSelector:@selector(zan:) withObject:sender afterDelay:2];

二、執行操作：

- (void)zan:(UIButton *)sender

{

    NSString * str = [

    if ([str isEqualToString:@"1"]) {

        SLog(@"贊贊贊");

    }else{

        SLog(@"踩踩踩");

    }

}