IOS 加载更多数据中

/**点击添加*/

- (IBAction)loadBtnClick {
    
    //1.隐藏加载按钮
    self.loadBtn.hidden=YES;
    
    //2.显示“正在加载”
    self.loadingView.hidden=NO;
    
    //3.显示更多的数据
    //GCD
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0*NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        //3.0s后执行bolock里面的代码
        //通知代理
        if([self.delegate respondsToSelector:@selector(tgFoooterViewDidClickedLoadBtn:)])
        {
            [self.delegate tgFoooterViewDidClickedLoadBtn:self];
        }
        //4.显示加载按钮
        self.loadBtn.hidden=NO;
        
        //5.隐藏“正在加载”
        self.loadingView.hidden=YES;
    });
    
   }