DZNEmptyDataSet 使用

gitHub地址：https://github.com/dzenbot/DZNEmptyDataSet

也可以使用DZNEmptyDataSet

效果图：

代码：

#import "UIScrollView+EmptyDataSet.h"
@interface DZNEmptyDataSetViewController ()<UITableViewDelegate,UITableViewDataSource,DZNEmptyDataSetSource,DZNEmptyDataSetDelegate>
@property(nonatomic,strong)UITableView *tableView;
@property(nonatomic,strong)NSMutableArray *dataArr;
@end

@implementation DZNEmptyDataSetViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self.view addSubview:self.tableView];

    self.tableView.delegate = self;
    self.tableView.dataSource = self;
    self.tableView.emptyDataSetSource = self;
    self.tableView.emptyDataSetDelegate = self;

      self.tableView.tableFooterView = [UIView new];

    [self.tableView registerClass:[UITableViewCell class]  forCellReuseIdentifier:@"cell"];

}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return self.dataArr.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];
    cell.textLabel.text = self.dataArr[indexPath.row];
    return cell;
}

#pragma mark DZNEmptyDataSetSource,DZNEmptyDataSetDelegate
//数据为空的时候添加图片提醒
- (UIImage *)imageForEmptyDataSet:(UIScrollView *)scrollView
{
    return [UIImage imageNamed:@"ip_txt"];
}
//数据为空文字提醒
- (NSAttributedString *)titleForEmptyDataSet:(UIScrollView *)scrollView
{
    NSString *text = @"加载失败请重试";

    NSDictionary *attributes = @{NSFontAttributeName: [UIFont boldSystemFontOfSize:18.0f],
                                 NSForegroundColorAttributeName: [UIColor darkGrayColor]};

    return [[NSAttributedString alloc] initWithString:text attributes:attributes];
}

//数据为空的背景
- (UIColor *)backgroundColorForEmptyDataSet:(UIScrollView *)scrollView
{
    return [UIColor whiteColor];
}

//为空的时候添加一个风火轮
/*
- (UIView *)customViewForEmptyDataSet:(UIScrollView *)scrollView
{
    UIActivityIndicatorView *activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
    [activityView startAnimating];
    return activityView;
}
*/
//如果tableveiw有tableHeaderView，可以自定义展示文字的位置
- (CGFloat)verticalOffsetForEmptyDataSet:(UIScrollView *)scrollView
{
    return -self.tableView.tableHeaderView.frame.size.height/1.0f;
}

- (CGFloat)spaceHeightForEmptyDataSet:(UIScrollView *)scrollView
{
    return 20.0f;
}
- (BOOL) emptyDataSetShouldAllowImageViewAnimate:(UIScrollView *)scrollView
{
    return false;
}
- (void)emptyDataSet:(UIScrollView *)scrollView didTapView:(UIView *)view
{
    [self.dataArr addObject:@"2"];
    [self.tableView reloadData];
    // Do something
}

-(UITableView *)tableView{
    if(!_tableView){
        _tableView = [[UITableView alloc]initWithFrame:self.view.bounds style:UITableViewStylePlain];
    }
    return _tableView;
}

-(NSMutableArray *)dataArr{
    if(!_dataArr){
        _dataArr = [NSMutableArray array];
    }
    return _dataArr;
}

@end

-(UIImage *)buttonBackgroundImageForEmptyDataSet:(UIScrollView *)scrollView forState:(UIControlState)state{
    return [UIImage imageNamed:@"ip_txt"];
}

- (void)emptyDataSet:(UIScrollView *)scrollView didTapButton:(UIButton *)button{
    NSLog(@"=========");
}