android - 如何在加载另一个 webview 时加载 webview？

Question

1. 在这里我想在加载另一个 web 视图时加载一个 web 视图我的代码是
2. 实际上我的主题我有两个选项，一个是 google 和 facebbok，当打开应用程序时，google 将被加载，如果我们按下 fb 按钮，facebook 将被加载，但这将花费时间

3. 为了避免那段时间，我只想在 google 中加载 fb（仅在加载 google 时，我们必须在第二个 web 视图中加载 fb，它处于隐藏状态） 4.当用户去 fb 时，我们必须在没有时间的情况下显示它。

   public class MainActivity extends Activity {
   
   Button google,fb;
   
   RelativeLayout paremt;
   
   
   @Override
   
   protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   
   
   // adding webview before loading the ui design
   
   getWindow().requestFeature(Window.FEATURE_PROGRESS);
   
   
   setContentView(R.layout.activity_main);
   
   final WebView wv=new WebView(MainActivity.this);
   final WebView wv1=new WebView(MainActivity.this);
   
   wv.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
   wv1.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
   wv.getSettings().setJavaScriptEnabled(true);
   wv1.setVisibility(View.INVISIBLE);
   wv1.getSettings().setJavaScriptEnabled(true);
   
   
   
   paremt=(RelativeLayout)findViewById(R.id.rel2);
    paremt.addView(wv);
   //paremt.addView(wv1);
   
   final Activity activity = this;
    wv.setWebChromeClient(new WebChromeClient() {
      public void onProgressChanged(WebView view, int progress) {
        // Activities and WebViews measure progress with different scales.
        // The progress meter will automatically disappear when we reach 100%
          System.out.println(" progress is  "+progress);
   
          //loading hidden webview with second link, while completion of second link
   
          if(progress==100)
          {
              wv1.loadUrl("https://www.facebook.com");
          }
   
        activity.setProgress(progress * 1000);
      }
    });
    wv.setWebViewClient(new WebViewClient() {
      public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
        Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show();
      }
    });
   
   wv.loadUrl("https://www.google.com");
   
   google=(Button)findViewById(R.id.button1);
   fb=(Button)findViewById(R.id.button2);
   int j=paremt.getChildCount();
   System.out.println("aaaaaaaaaaaaaaaaaaaaa   "+j);
   google.setOnClickListener(new OnClickListener() {
   
       @Override
       public void onClick(View v) {
           // TODO Auto-generated method stub
   
           paremt.removeAllViews();
           paremt.addView(wv);
           wv.setVisibility(View.VISIBLE);
   
       }
   });
   fb.setOnClickListener(new OnClickListener() {
   
       @Override
       public void onClick(View v) {
           // TODO Auto-generated method stub
   
           paremt.removeAllViews();
           wv1.setVisibility(View.VISIBLE);
           paremt.addView(wv1);
           wv1.setWebChromeClient(new WebChromeClient() {
                  public void onProgressChanged(WebView view, int progress) {
                    // Activities and WebViews measure progress with different scales.
                    // The progress meter will automatically disappear when we reach 100%
                    activity.setProgress(progress * 1000);
                  }
                });
                wv1.setWebViewClient(new WebViewClient() {
                  public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
                    Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show();
                  }
                });
   
               //wv1.loadUrl("https://www.facebook.com");
       }
   });
   

   } }

Answer 1

wv.loadUrl("https://www.google.com");
wv1.loadUrl("https://www.facebook.com");

同时调用这些行并从 onProgressChanged 方法中删除对 facebook url 的调用