vue 项目 iOS WKWebView 加载

1、首先让前端的同事打一个包（index.html,static文件包含css、资源文件、js等）导入项目；

⚠️ 注意：
把index.html放入项目根目录下，command+n创建一个资源文件.bundle，资源文件里也的包含一份 index.html

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下面开始代码：
懒加载WKWebView
引入#import #import
继承 WKNavigationDelegate,WKUIDelegate,

- (WKWebView *)wkWebView{
    if (!_wkWebView) {
        //设置网页的配置文件
        WKWebViewConfiguration * Configuration = [[WKWebViewConfiguration alloc]init];
        //允许视频播放
        if (@available(iOS 9.0, *)) {
            Configuration.allowsAirPlayForMediaPlayback = YES;
        } else {
            // Fallback on earlier versions
        }
        // 允许在线播放
        Configuration.allowsInlineMediaPlayback = YES;
        // 允许可以与网页交互，选择视图
        Configuration.selectionGranularity = YES;
        // 关于 WKWebView 无法跳转新页面 设置
        Configuration.preferences.javaScriptCanOpenWindowsAutomatically = YES;
        // web内容处理池
        Configuration.processPool = [[WKProcessPool alloc] init];
        //自定义配置,一般用于 js调用oc方法(OC拦截URL中的数据做自定义操作)
        WKUserContentController * UserContentController = [[WKUserContentController alloc]init];
        // 添加消息处理，注意：self指代的对象需要遵守WKScriptMessageHandler协议，结束时需要移除
        [UserContentController addScriptMessageHandler:self name:@"download"];//DownloadPolicy
        // 是否支持记忆读取
        Configuration.suppressesIncrementalRendering = YES;
        // 允许用户更改网页的设置
        Configuration.userContentController = UserContentController;
        
        _wkWebView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, kIs_iPhoneX? self.view.frame.size.height-34:self.view.frame.size.height) configuration:Configuration];
        _wkWebView.backgroundColor = [UIColor colorWithRed:240.0/255 green:240.0/255 blue:240.0/255 alpha:1.0];
        // 设置代理
        _wkWebView.navigationDelegate = self;
        _wkWebView.UIDelegate = self;
        // 垂直滚动
        [_wkWebView.scrollView setShowsVerticalScrollIndicator:NO];
        _wkWebView.scrollView.contentSize = CGSizeMake(self.view.frame.size.width, kIs_iPhoneX? self.view.frame.size.height-34:self.view.frame.size.height);
        //开启手势触摸
        _wkWebView.allowsBackForwardNavigationGestures = YES;
        // 设置 可以前进 和 后退
        //适应你设定的尺寸
        [_wkWebView sizeToFit];
        [self.view addSubview:_wkWebView];
    }
    return _wkWebView;
}

iOS 9 以后和 iOS 8 之前 加载方法不一样，做区分

- (void)viewDidLoad {
    [super viewDidLoad];
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSArray *array1 = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *matPath1 = [[array1 objectAtIndex:0] stringByAppendingPathComponent:@"QueHTML"];;
    if (![fileManager fileExistsAtPath:matPath1]) {
        NSString *matString = [[NSBundle mainBundle] pathForResource:@"QueHTML" ofType:@"bundle"];
        dispatch_async(dispatch_get_global_queue(0, 0), ^{
            [fileManager removeItemAtPath:matPath1 error:nil];
            [fileManager copyItemAtPath:matString toPath:matPath1 error:nil];
            dispatch_async(dispatch_get_main_queue(), ^{
                NSLog(@"创建完了");
                if ([[[UIDevice currentDevice] systemVersion] floatValue] < 9.0) {
                    [self ios8Load];
                }
                else{
                    [self ios9Load];
                }
            });
        });
    }
    else{
        if ([[[UIDevice currentDevice] systemVersion] floatValue] <9.0) {
            [self ios8Load];
        }
        else{
            [self ios9Load];
        }
    }
}

- (void)ios8Load {
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *path = [paths objectAtIndex:0];
    NSString *basePath = [NSString stringWithFormat:@"%@/%@",path,@"QueHTML/"];
   [self.wkWebView loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"www/QueHTML/index.html"]]]]];
}

- (void)ios9Load {
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *path = [paths objectAtIndex:0];
    NSString *basePath = [NSString stringWithFormat:@"%@/%@",path,@"QueHTML/"];
    NSString *htmlPath =  [NSString stringWithFormat:@"%@/%@",path,@"QueHTML/index.html"];
    NSURL *fileURL = [NSURL fileURLWithPath:htmlPath];
    if (@available(iOS 9.0, *)) {
        [self.wkWebView loadFileURL:fileURL allowingReadAccessToURL:[NSURL fileURLWithPath:basePath isDirectory:YES]];
    }
}

实现代理方法

// 接收到服务器跳转请求之后调用
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(WKNavigation *)navigation{
    NSLog(@"接收到服务器跳转请求----%@",navigation);
}
// 在收到响应后，决定是否跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler{
    NSLog(@"在收到响应后，决定是否跳转---%@",navigationResponse.response.URL.absoluteString);
    //允许跳转
    decisionHandler(WKNavigationResponsePolicyAllow);
    //不允许跳转
    //decisionHandler(WKNavigationResponsePolicyCancel);
}
// 在发送请求之前，决定是否跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler{
    NSLog(@"在发送请求之前，决定是否跳转---%@",navigationAction.request.URL.absoluteString);
    //允许跳转
    decisionHandler(WKNavigationActionPolicyAllow);
    //不允许跳转
    //decisionHandler(WKNavigationActionPolicyCancel);
}

#pragma mark - WKNavigationDelegate
// 页面开始加载时调用
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation{
    NSLog(@"页面开始加载");
}
// 当内容开始返回时调用
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation{
    NSLog(@"内容开始返回");
}
// 页面加载完成之后调用
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation{
    NSLog(@"页面加载完成");
}
// 页面加载失败时调用
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation{
    NSLog(@"页面加载失败");
}

如果是https访问需加上一下代码

- (void)webView:(WKWebView *)webView didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler {
    if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
        if ([challenge previousFailureCount] == 0) {
            NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
            completionHandler(NSURLSessionAuthChallengeUseCredential, credential);
        } else {
            completionHandler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);
        }
    } else {
      completionHandler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);
    }
}