iOS-UIKit(UIWebView.h--解读)

 UIWebView继承UIView,因此,其初始化方法和一般的view一样,通过allocinit进行初始化

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NS_ASSUME_NONNULL_BEGIN


typedef NS_ENUM(NSInteger, UIWebViewNavigationType) {

    UIWebViewNavigationTypeLinkClicked,//用户触击了一个链接

    UIWebViewNavigationTypeFormSubmitted,//用户提交了一个表单

    UIWebViewNavigationTypeBackForward,//用户触击前进或返回按钮

    UIWebViewNavigationTypeReload,//用户触击重新加载的按钮

    UIWebViewNavigationTypeFormResubmitted,//用户重复提交表单

    UIWebViewNavigationTypeOther//发生其它行为

};


typedef NS_ENUM(NSInteger, UIWebPaginationMode) {

    UIWebPaginationModeUnpaginated,//不使用翻页效果

    UIWebPaginationModeLeftToRight,//将网页超出部分分页,从左向右进行翻页

    UIWebPaginationModeTopToBottom,//将网页超出部分分页,从上向下进行翻页

    UIWebPaginationModeBottomToTop,//将网页超出部分分页,从下向上进行翻页

    UIWebPaginationModeRightToLeft//将网页超出部分分页,从右向左进行翻页

};


typedef NS_ENUM(NSInteger, UIWebPaginationBreakingMode) {

    UIWebPaginationBreakingModePage,

    UIWebPaginationBreakingModeColumn

};


@class UIWebViewInternal;

@protocol UIWebViewDelegate;


NS_CLASS_AVAILABLE_IOS(2_0)@interface UIWebView :UIView <NSCoding,UIScrollViewDelegate


@property (nullable,nonatomic, assign)id <UIWebViewDelegate> delegate;//设置webView的代理


@property (nonatomic,readonly, strong)UIScrollView *scrollViewNS_AVAILABLE_IOS(5_0);//内置的scrollView


//这是加载网页最常用的一种方式,通过一个网页URL来进行加载,这个URL可以是远程的也可以是本地的

- (void)loadRequest:(NSURLRequest *)request;

//这个方法需要将html文件读取为字符串,其中baseURL是我们自己设置的一个路径,用于寻找html文件中引用的图片等素材

- (void)loadHTMLString:(NSString *)string baseURL:(nullableNSURL *)baseURL;

//这个方式使用的比较少,但也更加自由,其中data是文件数据,MIMEType是文件类型,textEncodingName是编码类型,baseURL是素材资源路径。

- (void)loadData:(NSData *)data MIMEType:(NSString *)MIMEType textEncodingName:(NSString *)textEncodingName baseURL:(NSURL *)baseURL;


@property (nullable,nonatomic, readonly,strong) NSURLRequest *request;//URL请求


- (void)reload;//重新加载数据

- (void)stopLoading;//停止加载数据


- (void)goBack;//返回上一级

- (void)goForward;//跳转下一级


@property (nonatomic,readonly, getter=canGoBack)BOOL canGoBack;//获取能否返回上一级

@property (nonatomic,readonly, getter=canGoForward)BOOL canGoForward;//获取能否跳转下一级

@property (nonatomic,readonly, getter=isLoading)BOOL loading;//获取是否正在加载数据


//通过javaScript操作web数据

- (nullable NSString *)stringByEvaluatingJavaScriptFromString:(NSString *)script;


@property (nonatomic)BOOL scalesPageToFit;//设置是否缩放到适合屏幕大小


@property (nonatomic)BOOL detectsPhoneNumbers NS_DEPRECATED_IOS(2_0, 3_0);

@property (nonatomic)UIDataDetectorTypes dataDetectorTypesNS_AVAILABLE_IOS(3_0);//设置某些数据变为链接形式,这个枚举可以设置如电话号,地址,邮箱等转化为链接


@property (nonatomic)BOOL allowsInlineMediaPlaybackNS_AVAILABLE_IOS(4_0);// iPhone Safari defaults to NO. iPad Safari defaults to YES //设置是否使用内联播放器播放视频

@property (nonatomic)BOOL mediaPlaybackRequiresUserActionNS_AVAILABLE_IOS(4_0);// iPhone and iPad Safari both default to YES//设置视频是否自动播放


@property (nonatomic)BOOL mediaPlaybackAllowsAirPlayNS_AVAILABLE_IOS(5_0);// iPhone and iPad Safari both default to YES//设置音频播放是否支持ari play功能

@property (nonatomic)BOOL suppressesIncrementalRenderingNS_AVAILABLE_IOS(6_0);// iPhone and iPad Safari both default to NO//设置是否将数据加载如内存后渲染界面

@property (nonatomic)BOOL keyboardDisplayRequiresUserAction NS_AVAILABLE_IOS(6_0); // default is YES//设置用户交互模式

@property (nonatomic)UIWebPaginationMode paginationModeNS_AVAILABLE_IOS(7_0);//这个属性用来设置一种模式,当网页的大小超出view时,将网页以翻页的效果展示

@property (nonatomic)UIWebPaginationBreakingMode paginationBreakingModeNS_AVAILABLE_IOS(7_0);

@property (nonatomic)CGFloat pageLength NS_AVAILABLE_IOS(7_0);//设置每一页的长度

@property (nonatomic)CGFloat gapBetweenPages NS_AVAILABLE_IOS(7_0);//设置每一页的间距

@property (nonatomic,readonly) NSUInteger pageCountNS_AVAILABLE_IOS(7_0);//获取分页数


@property (nonatomic)BOOL allowsPictureInPictureMediaPlaybackNS_AVAILABLE_IOS(9_0);//如果你使用WebKit支持PiP功能,但要退出特定视频的画中画。设定关联web view 实例的allowsPictureInPictureMediaPlayback属性为NO


@property (nonatomic)BOOL allowsLinkPreview NS_AVAILABLE_IOS(9_0); // default is NO

@end


 @protocol UIWebViewDelegate <NSObject>


@optional

//准备加载内容时调用的方法,通过返回值来进行是否加载的设置

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType;

//开始加载时调用的方法

- (void)webViewDidStartLoad:(UIWebView *)webView;

//结束加载时调用的方法

- (void)webViewDidFinishLoad:(UIWebView *)webView;

//加载失败时调用的方法

- (void)webView:(UIWebView *)webView didFailLoadWithError:(nullableNSError *)error;


@end


NS_ASSUME_NONNULL_END


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