使用WebViewJavascriptBridge实现

1.三方下载：

链接:（https:/pan.baidu.com/s/1mEpIWW7t7XPRplqzVlTmRA 密码:l2a2）
（请手动把https后改为双斜杠）

2.使用代码：(.m文件)

#import "CustomerServiceViewController.h"
#import <WebKit/WebKit.h>
#import "WebViewJavascriptBridge.h"

@interface CustomerServiceViewController ()<WKNavigationDelegate,WKUIDelegate,UIWebViewDelegate>
@property (nonatomic, strong) UIWebView *uiWebView;
@property (nonatomic,strong) WKWebView *wkWebView;

@property (nonatomic,strong) WebViewJavascriptBridge *bridge;


@end

@implementation CustomerServiceViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    self.title = @"客户服务";
    self.view.backgroundColor = kWhiteColor;

//    [self.view addSubview:self.uiWebView];
    [self.view addSubview:self.wkWebView];

    // 名称
    NSString *name = [GlobelConfig getNullStr:[UserInfo shareInstance].idCardName];
    // 手机号
    NSString *phone = [GlobelConfig getNullStr:[UserInfo shareInstance].registerPhone];
    // token
    NSDictionary *TokenDic = [[NSUserDefaults standardUserDefaults]objectForKey:@"loginUserInfoDic"];
    NSString *token = [GlobelConfig getNullStr:TokenDic[@"token"]];

    // bridge.getUserInfo()
    NSDictionary *param = @{@"token":token,@"phone":phone,@"nickname":name};
    NSString *jsonStr = [param mj_JSONString];

    // 开启日志
    [WebViewJavascriptBridge enableLogging];

    // 给哪个webview建立JS与OjbC的沟通桥梁
    self.bridge = [WebViewJavascriptBridge bridgeForWebView:self.uiWebView];
    [self.bridge setWebViewDelegate:self];


    // JS主动调用OjbC的方法
    // 这是JS会调用getUserIdFromObjC方法，这是OC注册给JS调用的
    // JS需要回调，当然JS也可以传参数过来。data就是JS所传的参数，不一定需要传
    // OC端通过responseCallback回调JS端，JS就可以得到所需要的数据
    [self.bridge registerHandler:@"getUserInfo" handler:^(id data, WVJBResponseCallback responseCallback) {
      NSLog(@"js call getUserIdFromObjC, data from js is %@", data);
// 这里的data为JS发送给OC的数据
      if (responseCallback) {
        // 反馈给JS
        responseCallback(param);
      }
    }];
    [self.bridge callHandler:@"getUserInfo" data:jsonStr responseCallback:^(id responseData) {
      NSLog(@"from js: %@", responseData);
    }];


}

#pragma mark - UIWebView
- (UIWebView *)uiWebView{
    if (!_uiWebView) {
        self.uiWebView = [[UIWebView alloc] initWithFrame:CGRectMake(0,0, K_SCREEN_WIDTH, K_SCREEN_HEIGHT - KNavHeight - TabbarSafeBottomMargin)];
        self.uiWebView.delegate = self;

        [self setAutomaticallyAdjustsScrollViewInsets:NO];

        NSString *url = @"http://";
        NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url]];
        [self.uiWebView loadRequest:request];

    }
    return _uiWebView;
}



- (void)webViewDidStartLoad:(UIWebView *)webView {
    [SVProgressHUD show];
}

- (void)webViewDidFinishLoad:(UIWebView *)webView {
    [SVProgressHUD dismiss];
}

#pragma mark - WKWebView
- (WKWebView *)wkWebView{
    if (!_wkWebView) {
        self.wkWebView = [[WKWebView alloc] initWithFrame:CGRectMake(0,0, K_SCREEN_WIDTH, K_SCREEN_HEIGHT - KNavHeight - TabbarSafeBottomMargin)];

        self.wkWebView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth ;
        self.wkWebView.contentMode = UIViewContentModeRedraw;
        self.wkWebView.opaque = YES;
        self.wkWebView.UIDelegate =self;
        self.wkWebView.navigationDelegate = self;
        self.wkWebView.allowsBackForwardNavigationGestures = YES;

        [self setAutomaticallyAdjustsScrollViewInsets:NO];

        NSString *url = @"http://";
        NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url]];
        [self.wkWebView loadRequest:request];

    }
    return _wkWebView;
}

// 页面开始加载时调用
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation {
    [SVProgressHUD show];
}

// 页面加载失败时调用
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error {
    [SVProgressHUD dismiss];
}
// 页面加载完成之后调用
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation {
    [SVProgressHUD dismiss];
}

- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler
{
    NSString *urlStr = [webView.URL absoluteString];
    if ([urlStr rangeOfString:@"login"].location != NSNotFound)
    {
        //[SVProgressHUD dismiss];
        decisionHandler(WKNavigationActionPolicyCancel);


    }
    else if ([urlStr rangeOfString:@"register"].location != NSNotFound)
    {
        // [SVProgressHUD dismiss];
        decisionHandler(WKNavigationActionPolicyCancel);

    }
    else
    {
        decisionHandler(WKNavigationActionPolicyAllow);
    }
}

#pragma mark - WKUIDelegate
// js交互
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler
{
    NSLog(@"%@",message);
    completionHandler();

    if ([message isEqualToString:@"back"])
    {
        [self.navigationController popViewControllerAnimated:YES];
    }

}

@end

3.h5的代码：

（参考https:/www。cnblogs。com/iOS-mt/p/10438723.html）
（请手动把https后改为双斜杠，"。"改为"."）
1.iOS代码：

// 1.新建WebView
self.webView = [[UIWebView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:self.webView];

// 2.加载网页
NSString *indexPath = [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"];
NSString *appHtml = [NSString stringWithContentsOfFile:indexPath encoding:NSUTF8StringEncoding error:nil];
NSURL *baseUrl = [NSURL fileURLWithPath:indexPath];
[self.webView loadHTMLString:appHtml baseURL:baseUrl];

// 3.开启日志
[GCWebviewJSBridge setEnableLogging];

// 4.给webView建立JS和OC的沟通桥梁
_bridge = [GCWebviewJSBridge bridgeForWebView:self.webView];
[_bridge setwebViewDelegate:self];

2.JS的准备工作:
之前是只写一套, 发现iOS行了Android又不行了; Android行了iOS又不行了. 最后才知道需要写两套

// 这段代码是固定的，必须要放到js中
function setupWebViewJavascriptBridge(callback) {
   //Android
   if (window.GCWebviewAndroidJSBridge) {
       callback(GCWebviewAndroidJSBridge)
   } else {
       document.addEventListener(
         ‘GCWebviewAndroidJSBridgeReady‘
         , function() {
         callback(GCWebviewAndroidJSBridge)
         },
         false
     );
   }

   //iOS
   if (window.GCWebviewJSBridge) {
       return callback(GCWebviewJSBridge);
   }
   if (window.KBWVJSBCallBacks) {
       return window.KBWVJSBCallBacks.push(callback);
   }
   window.KBWVJSBCallBacks = [callback];
   var GCWVJSBIframe = document.createElement(‘iframe‘);
   GCWVJSBIframe.style.display = ‘none‘;
   GCWVJSBIframe.src = ‘gcwvjsbscheme://__GC_BRIDGE_LOADED__‘;
   document.documentElement.appendChild(GCWVJSBIframe);
   setTimeout(function() { document.documentElement.removeChild(GCWVJSBIframe) }, 0);
}

iOS注册方法提供给JS调用

[_bridge registerObjCHandler:@"openCamera" handler:^(id data, GCWVJSBResponseCallback responseCallback) {
    NSLog(@"需要%@图片", data[@"count"]);
    UIImagePickerController *imageVC = [[UIImagePickerController alloc] init];
    imageVC.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    [self presentViewController:imageVC animated:YES completion:nil];
}];

JS调用该方法的代码片段

bridge.callHandler(‘openCamera‘, {‘count‘:‘10张‘}, function responseCallback(responseData) {
   console.log("OC中返回的参数:", responseData)
});

JS注册方法提供给iOS调用. (oc 调用 js)
iOS注册提供用户信息方法

/* JS给OC提供公开的API, 在OC中可以手动调用此API, 并且可以接收OC中传过来的参数,同时可回调OC */
// 获取用户信息
bridge.registerHandler(‘getUserInfo‘, function(data, responseCallback) {
   console.log("OC中传递过来的参数:", data);
   // 把处理好的结果返回给OC
   responseCallback({"userID":"DX001", "userName":"旋之华", "age":"18", "otherName":"旋之华"})
});

iOS调用JS中的方法, 获得用户信息

// 调用JS中的API
[self.bridge callHandler:@"getUserInfo" data:@{@"userId":@"DX001"} responseCallback:^(id responseData) {
    NSString *userInfo = [NSString stringWithFormat:@"%@,姓名:%@,年龄:%@", responseData[@"userID"], responseData[@"userName"], responseData[@"age"]];
}];

参考文献

（请手动把https后改为双斜杠，"。"改为"."）

https:/www。jianshu。com/p/83f99a02c992

https:/www。jianshu。com/p/d45ce14278c7

https:/blog.csdn.net/cnsxhza985/article/details/20053839?utm_medium=distribute.pc_relevant_bbs_down.none-task--2

https:/www。cnblogs。com/iOS-mt/p/10438723.html