BFEmptyDataSet

参考 https://github.com/dzenbot/DZNEmptyDataSet 经过修改

Features

• 无网络状态，无数据状态，空视图处理
• 支持所有UIView

Installation

• 可自定义背景颜色
• 定义标题、描述
• 图片
• 界面点击事件

How to use

user cocoapods

pod 'BFEmptyDataSet', '~> 1.0.0'

Import

#import "UIView+EmptyDataSet.h"

Protocol Conformance

Conform to datasource and/or delegate. 遵循协议委托

@interface ViewController : UIViewController<BFEmptyDataSetDelegate,BFEmptyDataSetSource>

- (void)viewDidLoad {
    [super viewDidLoad];
    
    bodyWebView = [[UIWebView alloc] initWithFrame:self.view.bounds];
    bodyWebView.delegate=self;
    [self.view addSubview:bodyWebView];
    
    bodyWebView.emptyDataSetDelegate=self;
    bodyWebView.emptyDataSetSource=self;
    
    [self loadWeb];
    
}

Data Source Implementation

Return the content you want to show on the empty state, and take advantage of NSAttributedString features to customise the text appearance. 实现数据源委托

• The image for the empty state:
• 设置空视图图片

- (UIImage *)imageForEmptyDataSet:(UIScrollView *)scrollView
{
    return [UIImage imageNamed:@"results_tips6"];
}

• The attributed string for the title/description of the empty state:
• 返回 attributed string 为标题和描述

- (NSAttributedString *)titleForEmptyDataSet:(UIView *)view{
    NSString *text = @"哎呀,加载失败了...";
    
    NSDictionary *attributes = @{NSFontAttributeName: [UIFont systemFontOfSize:15],
                                 NSForegroundColorAttributeName:Color(0, 174, 239, 1)};
    
    return [[NSAttributedString alloc] initWithString:text attributes:attributes];
}

- (NSAttributedString *)descriptionForEmptyDataSet:(UIView *)view{
    NSString *text = @"请检查您的网络设置或点击重试";
    
    NSDictionary *attributes = @{NSFontAttributeName: [UIFont systemFontOfSize:13],
                                 NSForegroundColorAttributeName:Color(74, 74, 74, 1)};
    
    return [[NSAttributedString alloc] initWithString:text attributes:attributes];
}

• The background color for the empty state:
• 设置背景颜色

- (UIColor *)backgroundColorForEmptyDataSet:(UIView *)view
{
    return Color(250, 250, 250, 1);
}

• Finally, you can separate components from each other (default separation is 0 pts):
• 设置各个元素之间的距离，默认0

- (CGFloat)spaceHeightForEmptyDataSet:(UIView *)view
{
    return 20.0f;
}

Delegate Implementation

Return the behaviours you would expect from the empty states, and receive the user events. 实现委托

• Notifies when the dataset view was tapped:
• 当视图被点击时调用

- (void)emptyDataSetDidTapView:(UIView *)view{
    NSLog(@"doSomething");
}

• 显示空状态视图

    [bodyWebView reloadEmptyDataSet];

• 关闭空状态视图

    [bodyWebView removeEmptyDataSet];