WebView basic use

1. Enable JavaScript

WebSettings settings = mWebView.getSettings();
settings.setJavaScriptEnabled(true);
//settings.setAllowFileAccess(true);
//settings.setAllowFileAccessFromFileURLs(true);
//settings.setAllowContentAccess(true);
settings.setDatabaseEnabled(true);
settings.setDomStorageEnabled(true);

2. Intercept the specified during loading url Or advertising , rewrite WebViewClient::shouldInterceptRequest

 mWebView.setWebViewClient(new WebViewClient(){
    
           @Override
           public void onPageFinished(WebView view, String url) {
    
               super.onPageFinished(view, url);
               if(mRefreshLayout != null){
    
                   mRefreshLayout.finishRefresh();
               }
           }

            @Nullable
            @Override
            public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {
    
                Uri uri = request.getUrl();
                // Filter basic advertisements url And replace pictures 
                if(uri.toString().equals("https://xxx.png")){
    
                    try {
    
                        InputStream localCopy = getAssets().open("empty.png");
                        return new WebResourceResponse("image/png", "UTF-8", localCopy);
                    }
                    catch (Exception e){
    
                        return new WebResourceResponse(null,null,null);
                    }


                }
                if (isAds(uri)){
    
                    return new WebResourceResponse(null,null,null);
                }
                return super.shouldInterceptRequest(view, request);
            }

            @Override
            public void onLoadResource(WebView view, String url) {
    
                super.onLoadResource(view, url);
                Log.i("tUrl", url);
            }
        });

among Assert Catalogue and java,res At the same level

3. monitor url Loading progress , rewrite WebChromeClient::onProgressChanged

 mWebView.setWebChromeClient(new WebChromeClient(){
    
            @Override
            public void onProgressChanged(WebView view, int newProgress) {
    
                super.onProgressChanged(view, newProgress);
            }
        });

4. Intercept href Jump , rewrite WebViewClient::shouldOverrideUrlLoading

public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
    
               if (request.getUrl().toString().equals("https://xxx")){
    
                   // Cancel the current link 
                   return true;
                }
                return super.shouldOverrideUrlLoading(view, request);
            }