WKWebView使用

1、js 调用oc方法

　　

- (void)viewDidLoad {

    [super viewDidLoad];

    WKWebViewConfiguration *configur = [[WKWebViewConfiguration alloc] init];

    WKPreferences *preferences = [[WKPreferences alloc] init];

    configur.preferences = preferences;

    preferences.javaScriptEnabled = YES;

    

    self.userContentController = [[WKUserContentController alloc]init];

    [self.userContentController addScriptMessageHandler:self name:@"goBack"];

    configur.userContentController = self.userContentController;

    

    self.webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, MainScreenWidth, MainScreenHeight-NaviHeight-44) configuration:configur];

    

    [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://192.168.10.60/"]]];

    

    self.webView.UIDelegate = self;

    self.webView.navigationDelegate = self;

    

    [self.view addSubview:self.webView];

    

}

//WKScriptMessageHandler协议方法

- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message {

    if ([message.name isEqualToString:@"goBack"]) {

        //做处理 do something

        //message.body 为此 ScriptMessage 传递的消息内容

        NSLog(@"goBack");

    }

}

主要点：

• 如果message.body中无参数，JS代码中需要传个null,不然iOS端不会接受到JS交互,window.webkit.messageHandlers.kJS_Login.postMessage(null)