Objective-C：

github：DZNEmptyDataSet

swift版本：

EmptyDataSet-Swift

原理：比如当UITableView的section数量为0时，显示缺省页

注意：原因是DZNEmptyDataSet的布局是autolayout（具体看DZNEmptyDataSet的 .m 文件），不是 frame 布局，所以自定义 view 时候，即使设置 frame，也不起作用，自定义的 view 没有尺寸，因此上面也不响应任何事件。

[具体解决方法就是]：(https://github.com/dzenbot/DZNEmptyDataSet/issues/405)

- (UIView *)customViewForEmptyDataSet:(UIScrollView *)scrollView {
//自定义的 view 用 autolayout 布局就可以了，我用的是 masonry
}

使用：

// 引入代理
<DZNEmptyDataSetSource, DZNEmptyDataSetDelegate>

// tableview遵守协议
self.tableView.emptyDataSetDelegate = self;
self.tableView.emptyDataSetSource = self;

#pragma mark - 配置缺省页
//空白页是否显示
- (BOOL)emptyDataSetShouldDisplay:(UIScrollView *)scrollView {
    return YES;
}
//是否滑动
- (BOOL)emptyDataSetShouldAllowScroll:(UIScrollView *)scrollView{
    return YES;
}
// 自定义缺省显示视图
- (UIView *)customViewForEmptyDataSet:(UIScrollView *)scrollView{
    
    // 设置 frame时，点击事件和设置背景颜色 不起作用
    // UIView *customView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeight)];
    UIView *customView = [[UIView alloc] init];
    customView.backgroundColor = [UIColor redColor];
    [scrollView addSubview:customView];
    [customView makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(scrollView);
    }];

    UIImageView *emptyDataImageView = [[UIImageView alloc]init];
    [customView addSubview:emptyDataImageView];
    [emptyDataImageView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerX.equalTo(customView);
        make.centerY.equalTo(customView).offset(-k_Height_TabBar-k_Height_NavBar);
        make.height.offset(100);
        make.width.offset(139);
    }];
    
    UILabel *emptyDataTitleLab=[[UILabel alloc]init];
    emptyDataTitleLab.textAlignment=NSTextAlignmentCenter;
    [customView addSubview:emptyDataTitleLab];
    [emptyDataTitleLab mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerX.equalTo(customView);
        make.height.offset(23);
        make.width.offset(165);
        make.top.equalTo(emptyDataImageView.mas_bottom).offset(15);
    }];
    
    UIButton *button = [UIButton new];
    button.layer.cornerRadius = 12;
    button.layer.masksToBounds = YES;
    [button setTitleColor:ColorGlobalBalck forState:UIControlStateNormal];
    button.titleLabel.font = [UIFont fontWithName:FontGlobalMedium size:15];
    [button setBackgroundColor:ColorGlobalTheme];
    [customView addSubview:button];
    [button mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerX.equalTo(customView);
        make.height.offset(44);
        make.width.offset(120);
        make.top.equalTo(emptyDataTitleLab.mas_bottom).offset(23);
    }];
    
    if ([[BRNetworkHepler readNetStatus] isEqualToString:NetWork_NONET]) {
        emptyDataImageView.image = [UIImage imageNamed:EmptyData_Global_NoNet_Image];
        emptyDataTitleLab.text=EmptyData_Global_NoNet_TitleText;
        emptyDataTitleLab.textColor = EmptyData_Global_NoNet_TitleTextColor;
        emptyDataTitleLab.font = EmptyData_Global_NoNet_TitleFont;
        [button setTitle:@"重试" forState:UIControlStateNormal];
        [button addTarget:self action:@selector(reloadTableviewDataClick:) forControlEvents:UIControlEventTouchUpInside];
    }
    else if ([[GWLocationMannger sharedGpsManager] checkLocationServicesAuthorizationStatus] == NO){
        emptyDataImageView.image = [UIImage imageNamed:EmptyData_Global_NoLocation_Image];
        emptyDataTitleLab.text=EmptyData_Global_NoLocation_TitleText;
        emptyDataTitleLab.textColor = EmptyData_Global_NoNet_TitleTextColor;
        emptyDataTitleLab.font = EmptyData_Global_NoNet_TitleFont;
        [button setTitle:@"去设置" forState:UIControlStateNormal];
        [button addTarget:self action:@selector(cheackLocationClick:) forControlEvents:UIControlEventTouchUpInside];
    }
    else{
        emptyDataImageView.image = [UIImage imageNamed:EmptyData_Global_NoData_Image];
        emptyDataTitleLab.text=EmptyData_Global_NoData_TitleText;
        emptyDataTitleLab.textColor = EmptyData_Global_NoData_TitleTextColor;
        emptyDataTitleLab.font = EmptyData_Global_NoData_TitleFont;
        [button setTitle:@"刷新" forState:UIControlStateNormal];
//        [button addTarget:self action:@selector(reloadUpDateClick:) forControlEvents:UIControlEventTouchUpInside];
        [button addTarget:self action:@selector(reloadTableviewDataClick:) forControlEvents:UIControlEventTouchUpInside];
    }
    
    return customView;
}
-(void)cheackLocationClick:(UIButton *)btn{
    [[GWLocationMannger sharedGpsManager] checkLocationServicesAuthorizationStatus];
}
-(void)reloadTableviewDataClick:(UIButton *)btn{
    [self.tableView.mj_header beginRefreshing];
}