Swift Delegate(代理)

## MJRefresh [](https://github.com/apple/swift-package-manager) [](https://github.com/Carthage/Carthage) [](https://cocoapods.org/pods/MJRefresh) * An easy way to use pull-to-refresh [📜✍🏻**Release Notes**: more details](https://github.com/CoderMJLee/MJRefresh/releases) ## Contents - New Features - [Dynamic i18n Switching](#dynamic_i18n_switching) - [SPM Supported](#spm_supported) - [Swift Chaining Grammar Supported](#swift_chaining_grammar_supported) * Getting Started * [Features【Support what kinds of controls to refresh】](#Support_what_kinds_of_controls_to_refresh) * [Installation【How to use MJRefresh】](#How_to_use_MJRefresh) * [Who's using【More than hundreds of Apps are using MJRefresh】](#More_than_hundreds_of_Apps_are_using_MJRefresh) * [Classes【The Class Structure Chart of MJRefresh】](#The_Class_Structure_Chart_of_MJRefresh) * Comment API * [MJRefreshComponent.h](#MJRefreshComponent.h) * [MJRefreshHeader.h](#MJRefreshHeader.h) * [MJRefreshFooter.h](#MJRefreshFooter.h) * [MJRefreshAutoFooter.h](#MJRefreshAutoFooter.h) * [MJRefreshTrailer.h](#MJRefreshTrailer.h) * Examples * [Reference](#Reference) * [The drop-down refresh 01-Default](#The_drop-down_refresh_01-Default) * [The drop-down refresh 02-Animation image](#The_drop-down_refresh_02-Animation_image) * [The drop-down refresh 03-Hide the time](#The_drop-down_refresh_03-Hide_the_time) * [The drop-down refresh 04-Hide status and time](#The_drop-down_refresh_04-Hide_status_and_time) * [The drop-down refresh 05-DIY title](#The_drop-down_refresh_05-DIY_title) * [The drop-down refresh 06-DIY the control of refresh](#The_drop-down_refresh_06-DIY_the_control_of_refresh) * [The pull to refresh 01-Default](#The_pull_to_refresh_01-Default) * [The pull to refresh 02-Animation image](#The_pull_to_refresh_02-Animation_image) * [The pull to refresh 03-Hide the title of refresh status](#The_pull_to_refresh_03-Hide_the_title_of_refresh_status) * [The pull to refresh 04-All loaded](#The_pull_to_refresh_04-All_loaded) * [The pull to refresh 05-DIY title](#The_pull_to_refresh_05-DIY_title) * [The pull to refresh 06-Hidden After loaded](#The_pull_to_refresh_06-Hidden_After_loaded) * [The pull to refresh 07-Automatic back of the pull01](#The_pull_to_refresh_07-Automatic_back_of_the_pull01) * [The pull to refresh 08-Automatic back of the pull02](#The_pull_to_refresh_08-Automatic_back_of_the_pull02) * [The pull to refresh 09-DIY the control of refresh(Automatic refresh)](#The_pull_to_refresh_09-DIY_the_control_of_refresh(Automatic_refresh)) * [The pull to refresh 10-DIY the control of refresh(Automatic back)](#The_pull_to_refresh_10-DIY_the_control_of_refresh(Automatic_back)) * [UICollectionView01-The pull and drop-down refresh](#UICollectionView01-The_pull_and_drop-down_refresh) * [UICollectionView02-The trailer refresh](#UICollectionView02-The_trailer_refresh) * [WKWebView01-The drop-down refresh](#WKWebView01-The_drop-down_refresh) * [Hope](#Hope) ## New Features ### <a id="dynamic_i18n_switching"></a>Dynamic i18n Switching Now `MJRefresh components` will be rerendered automatically with `MJRefreshConfig.default.language` setting. #### Example Go `i18n` folder and see lots of cases. Simulator example is behind `i18n tab` in right-top corner. #### Setting language ```swift MJRefreshConfig.default.language = "zh-hans" ``` #### Setting i18n file name ```swift MJRefreshConfig.default.i18nFilename = "i18n File Name(not include type<.strings>)" ``` #### Setting i18n language bundle ```swift MJRefreshConfig.default.i18nBundle = <i18n Bundle> ``` #### Adopting the feature in your DIY component 1. Just override `i18nDidChange` function and reset texts. ```swift // must use this localization methods Bundle.mj_localizedString(forKey: "") // or Bundle.mj_localizedString(forKey: "", value:"") override func i18nDidChange() { // Reset texts function setupTexts() // Make sure to call super after resetting texts. It will call placeSubViews for applying new layout. super.i18nDidChange() } ``` 2. Receiving `MJRefreshDidChangeLanguageNotification` notification. ### <a id="spm_supported"></a>SPM Supported Released from [`3.7.1`](https://github.com/CoderMJLee/MJRefresh/releases/tag/3.7.1) ### <a id="swift_chaining_grammar_supported"></a>Swift Chaining Grammar Supported ```swift // Example as MJRefreshNormalHeader func addRefreshHeader() { MJRefreshNormalHeader { [weak self] in // load some data }.autoChangeTransparency(true) .link(to: tableView) } ``` ## <a id="Support_what_kinds_of_controls_to_refresh"></a>Support what kinds of controls to refresh * `UIScrollView`、`UITableView`、`UICollectionView`、`WKWebView` ## <a id="How_to_use_MJRefresh"></a>How to use MJRefresh * Installation with CocoaPods：`pod 'MJRefresh'` * Installation with [Carthage](https://github.com/Carthage/Carthage)：`github "CoderMJLee/MJRefresh"` * Manual import： * Drag All files in the `MJRefresh` folder to project * Import the main file：`#import "MJRefresh.h"` ```objc Base Custom MJRefresh.bundle MJRefresh.h MJRefreshConst.h MJRefreshConst.m UIScrollView+MJExtension.h UIScrollView+MJExtension.m UIScrollView+MJRefresh.h UIScrollView+MJRefresh.m UIView+MJExtension.h UIView+MJExtension.m ``` ## <a id="More_than_hundreds_of_Apps_are_using_MJRefresh"></a>More than hundreds of Apps are using MJRefresh <img src="http://images0.cnblogs.com/blog2015/497279/201506/141212365041650.png" width="200" height="300"> * More information of App can focus on：[M了个J-博客园](http://www.cnblogs.com/mjios/p/4409853.html) ## <a id="The_Class_Structure_Chart_of_MJRefresh"></a>The Class Structure Chart of MJRefresh  - `The class of red text` in the chart：You can use them directly - The drop-down refresh control types - Normal：`MJRefreshNormalHeader` - Gif：`MJRefreshGifHeader` - The pull to refresh control types - Auto refresh - Normal：`MJRefreshAutoNormalFooter` - Gif：`MJRefreshAutoGifFooter` - Auto Back - Normal：`MJRefreshBackNormalFooter` - Gif：`MJRefreshBackGifFooter` - `The class of non-red text` in the chart：For inheritance，to use DIY the control of refresh - About how to DIY the control of refresh，You can refer the Class in below Chart<br> <img src="http://images0.cnblogs.com/blog2015/497279/201506/141358159107893.png" width="30%" height="30%"> ## <a id="MJRefreshComponent.h"></a>MJRefreshComponent.h ```objc /** The Base Class of refresh control */ @interface MJRefreshComponent : UIView #pragma mark - Control the state of Refresh /** BeginRefreshing */ - (void)beginRefreshing; /** EndRefreshing */ - (void)endRefreshing; /** IsRefreshing */ - (BOOL)isRefreshing; #pragma mark - Other /** According to the drag ratio to change alpha automatically */ @property (assign, nonatomic, getter=isAutomaticallyChangeAlpha) BOOL automaticallyChangeAlpha; @end ``` ## <a id="MJRefreshHeader.h"></a>MJRefreshHeader.h ```objc @interface MJRefreshHeader : MJRefreshComponent /** Creat header */ + (instancetype)headerWithRefreshingBlock:(MJRefreshComponentRefreshingBlock)refreshingBlock; /** Creat header */ + (instancetype)headerWithRefreshingTarget:(id)target refreshingAction:(SEL)action; /** This key is used to storage the time that the last time of drown-down successfully */ @property (copy, nonatomic) NSString *lastUpdatedTimeKey; /** The last time of drown-down successfully */ @propert