h5 initiates a custom protocol request. After the app intercepts this request, the app calls the callback function in h5

 Protocol interception A custom protocol request is initiated by h5. After the app intercepts the request, the app calls the callback function in h5

1. The protocol is customized by the app, such as sdk://action?params

2. Define the callback function in h5, such as

   window.bridge={getDouble:value=>{},getTriple:value=>{}}

3. A custom protocol request is initiated by h5, such as location.href='sdk://double?value=10'

4. After the app intercepts the request, it performs the corresponding operation to obtain the return value

5. Call the callback function in h5 by the app, such as window.bridge.getDouble(20);

javascript

window.bridge = {
​
  getDouble: value => { // 20
​
  }, 
​
  getTriple: value => {
  // more  
  }
};
location.href =  'sdk://double?value=10' ;

android：

webview.setWebViewClient (new new WebViewClient () { 
@Override 
public Boolean houldOverrideUrlLoading (the WebView View, String url) { 
// If the url is determined sdk: // starts off on the knockdown 
// url and from the SDK: // ? action taken action in the params and the params 
    Uri Uri.parse = URI (URL);                                  
    IF (. uri.getScheme () the equals ( "SDK")) { 
    // = Double such action, the params = value = 10 
        Webview. evaluateJavascript ( 'window.bridge.getDouble (20 is)'); 
            return to true; 
    } 
  } 
});
      

ios:

(BOOL) Webview :( UIWebView *) Webview shouldStartLoadWithRequest :( NSURLRequest *) Request navigationType :( UIWebViewNavigationType) navigationType { 
// determine if the url is sdk: // starts off on the interception 
// then the url sdk: // ? action taken action in the params and the params 
NSString * urlStr = request.URL.absoluteString; 
IF ([urlStr hasPrefix: @ "SDK: //"]) { 
  // such action = double, params = value = 10 
  * @ FUNC = NSString "window.bridge.getDouble (20 is)"; 
  [Webview stringByEvaluatingJavaScriptFromString: FUNC]; 
      return NO; 
  } 
  return YES; 
}