如何在加载WebView之前显示布局的进度条

3 回答

• 0

  您可以像这样简单地使用webView setPictureListener（）：

  // here you can start a loading wheel
  
     webView.setPictureListener(new WebView.PictureListener() {
        public void onNewPicture(WebView webView, Picture picture) {
             // close your loading wheel here
              }
          });
  
     //load your url
     webView.loadUrl(yourUrl);
  

  回复于 2024-05-03T18:30:21+08:00
• 2

  要在webview中定义进度条：

  1. 在布局中定义 ProgressBar 和 Webview ，如下所示：

  <ProgressBar android:id="@+id/progressbar"
          style="?android:attr/progressBarStyleHorizontal"
          android:layout_width="fill_parent"
          android:layout_height="8px"
          android:max="100"
          android:visibility="gone" />
  
  <ScrollView
      android:id="@+id/ScrollView01"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent"
      android:fadingEdge="none" >
  
  <WebView
      android:id="@+id/webkit"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent" />
  
  </ScrollView>
  

  2. 在您的活动中：

  progressBar = (ProgressBar)findViewById(R.id.progressbar);
  
      progressBar.setProgress(0);
  
      progressBar.setVisibility(View.VISIBLE);
  
      WebView mWebView = (WebView)findViewById(R.id.webkit);
  
      mWebView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
  
      mWebView.setWebChromeClient(new WebChromeClient(){
  
      public void onProgressChanged(WebView view, int progress) {
  
           progressBar.setProgress(progress);
           if(progress == 100) {
               progressBar.setVisibility(View.GONE);
            }
         }
      });
  

  回复于 2024-05-03T18:30:21+08:00
• 6

  我确信这是检测页面加载完成的更好方法 .

  webView.setWebViewClient(new WebViewClient() {
          @Override
          public void onPageFinished(WebView view, String url) {
              super.onPageFinished(view, url);
              loadingIndicator.setVisibility(View.GONE);
          }
      });
  

  回复于 2024-05-03T18:30:21+08:00