web视图与AsyncTask的Andr​​oid上 [英] Webview with asynctask on Android

问题描述

我想这样做，它的进度对话框等待在的WebView 加载项。我怎样才能做到这一点而 dialog.dismiss（）事件取决于负载的项目上的的WebView

i want to do it which the progress dialog waits the loading item on webview. How can i do it which dialog.dismiss() event depend on loading item on webview?

    public class asynctask extends  AsyncTask<Void, Void, Void> {

    private ProgressDialog dialog = new ProgressDialog(WebActivity.this);


  @Override
  protected void onPostExecute(Void result) {
      // TODO Auto-generated method stub

在那里我可以怎样做呢？

      dialog.dismiss();

无需等待对话框消失

     }
 @Override 
 protected void onPreExecute() {
      // TODO Auto-generated method stub
        dialog.setMessage("Loading..Please wait.");

        dialog.show();
        dialog.setCanceledOnTouchOutside(false);
     }



@Override
protected Void doInBackground(Void... params) {
      // TODO Auto-generated method stub




      return null;
     }


 @Override
 public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);


    setContentView(R.layout.webview);

    webView = (WebView) findViewById(R.id.webView1);


    Bundle extras = getIntent().getExtras();
    String url=extras.getString("adres");

    webView.setWebViewClient(new WebViewClient());
    webView.loadUrl(url);



    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);

    new asynctask().execute();

}

推荐答案

不要使用AsyncTask的，因为你是不是负责加载web视图中。如果你想显示一个进度对话框，这里是如何做到这一点。

Don't use AsyncTask, as you are not in charge of loading the webview. If you want to show a progress dialog, here is how to do it.

private ProgressDialog dialog = new ProgressDialog(WebActivity.this);

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.webview);
    webView = (WebView) findViewById(R.id.webView1);

    Bundle extras = getIntent().getExtras();
    String url=extras.getString("adres");

    webView.setWebViewClient(new WebViewClient() {
        @Override
        public void onPageFinished(WebView view, String url) {                  
            if (dialog.isShowing()) {
                dialog.dismiss();
            }
        }
    });
    dialog.setMessage("Loading..Please wait.");
    dialog.setCanceledOnTouchOutside(false);
    dialog.show();
    webView.loadUrl(url);



    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);
}

我们的想法是，你显示对话框，启动加载的URL，当Web客户端看到该页面已完成加载，它关闭对话框。

The idea is that you show the dialog, you start loading the url, and when the webclient sees that the page has finished loading, it dismisses the dialog.

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