Solve the problems that Android WebView intercepts url and video playback fails to load

Requirements: When Android calls webView to load a web page, intercept a link without executing this link, and execute the specified jump to other activity pages.

Several apis are provided in the setWebViewClient method of webview:

 //  This callback is to intercept the click to jump url Link to the requested url Link to make changes (add and delete fields) 
public WebResourceResponse shouldInterceptRequest(WebView view, String url) 

//  Called only after clicking on the requested link. Overriding this method returns true Indicates that clicking the link in the webpage is still in the current webview Jump inside, don't jump to the browser. We can do many operations with this function, for example, we read some special URL So you can cancel this operation without opening the address and do other predefined operations, which is right 1 A program is very necessary. 
public boolean shouldOverrideUrlLoading(WebView view, String url)

So my requirement is to do it in the shouldOverrideUrlLoading method

webView.setWebViewClient(new WebViewClient() {

   @Override
   //  Called only after clicking on the requested link. Overriding this method returns true Indicates that clicking the link in the webpage is still in the current webview Jump inside, don't jump to the browser. We can do many operations with this function, for example, we read some special URL So you can cancel this operation without opening the address and do other predefined operations, which is right 1 A program is very necessary. 
   public boolean shouldOverrideUrlLoading(WebView view, String url) {
    //  Judge url Whether the link contains a field, and if so, the specified jump is performed (no jump is performed url Link), and load it if it does not url Link 
    if (url.contains("/mproduct-")) {
     Intent i = new Intent(MainActivity.this, MainActivity.class);
     startActivity(i);
     return true;
    } else {
     return false;
    }
   }
  });

Some other settings of webview

// Click the return button to return to 1 Pages instead of exiting the program 
 public boolean onKeyDown(int keyCode, KeyEvent event) {
  if (keyCode == KeyEvent.KEYCODE_BACK && webView.canGoBack()) {
   webView.goBack();//  Before returning 1 Pages 
   return true;
  }
  return super.onKeyDown(keyCode, event);
 }

@Override
 protected void onDestroy() {
  super.onDestroy();
  // Clear webview Cache 
  webView.clearCache(true);
 }

private void initView() {
  webView = (WebView) findViewById(R.id.webView);
  WebSettings settings = webView.getSettings();
  settings.setJavaScriptEnabled(true);
  settings.setBuiltInZoomControls(true);//  Set up support for scaling 
  settings.setSupportZoom(false);//  Zoom is not supported 
  settings.setUseWideViewPort(false);//  Adjust the picture to fit webview Size 
  settings.setLoadWithOverviewMode(true);//  Zoom to screen size 
  settings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);// Support caching 

 }

Introduction of common methods of WebSettings:

setJavaScriptEnabled(true); // Support js
 setPluginsEnabled(true); // Support plug-ins  
 setUseWideViewPort(false); // Adjust the picture to fit webview The size of  
 setSupportZoom(true); // Support for Zoom  
 setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN); // Support content relayout  
 supportMultipleWindows(); // Multi-window  
 setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK); // Shut down webview Cache in  
 setAllowFileAccess(true); // Setting access to files  
 setNeedInitialFocus(true); // When webview Call requestFocus When is webview Setting Node 
 webview webSettings.setBuiltInZoomControls(true); // Set up support for scaling  
 setJavaScriptCanOpenWindowsAutomatically(true); // Support the adoption JS Open a new window  
 setLoadWithOverviewMode(true); //  Zoom to screen size 
 setLoadsImagesAutomatically(true); // Support automatic loading of pictures 

The complete solution of WebViewClient method:

doUpdateVisitedHistory(WebView view, String url, boolean isReload) //( Update history ) 
onFormResubmission(WebView view, Message dontResend, Message resend) //( The application re-requests web page data ) 
onLoadResource(WebView view, String url) //  Called when the page resource is loaded, every 1 Will call the loading of resources (such as pictures) 1 Times.  
onPageStarted(WebView view, String url, Bitmap favicon) // This event is called at the beginning of loading the page. Usually we can set it here 1 A loading That tells the user that the program is waiting for a network response.  
onPageFinished(WebView view, String url) // Called at the end of page loading. By the same token, we know that 1 Pages are loaded, so we can close loading  Bar, switch program actions.  
onReceivedError(WebView view, int errorCode, String description, String failingUrl)// ( Reporting error messages ) 
onReceivedHttpAuthRequest(WebView view, HttpAuthHandler handler, String host,String realm)// (Get Return Information Authorization Request)  
onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) // Overriding this method can make webview Deal with https Request. 
onScaleChanged(WebView view, float oldScale, float newScale) // (WebView Called when a change occurs ) 
onUnhandledKeyEvent(WebView view, KeyEvent event) // ( Key Called when the event is not loaded)  
shouldOverrideKeyEvent(WebView view, KeyEvent event)// Override this method to handle key events in the browser.  
shouldOverrideUrlLoading(WebView view, String url) 
// Called only after clicking on the requested link. Overriding this method returns true Indicates that clicking the link in the webpage is still in the current webview Jump inside, don't jump to the browser. We can do many operations with this function, for example, we read some special URL So you can cancel this operation without opening the address and do other predefined operations, which is right 1 A program is very necessary. 

Solution to the problem of video playback loading failure in H5 and H5 loaded by WebView:

1. Add the following attributes to the activity configuration file where webview is located in AndroidManifest. xml

android:hardwareAccelerated="true"

2. Add webSettings. setPluginState (WebSettings. PluginState. ON);

If it is not added, the video will fail to load

3. This judgment should be added to mobile phones above 5.0

 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
   webSettings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
  }