ProgressDialogue框未显示在webview

Question

我只是被困在一个小东西大约1整天我创建了一个 webview android 应用程序，它的工作正常，但我想要一个进度对话框，基本上出现在下一页加载时。这是我的代码

//ProgressDialogue
    ProgressDialog pd = null;

    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
        pd=new ProgressDialog(MainActivity.this);
        pd.setTitle("Please Wait..");
        pd.setMessage("Your Internet is Slow..");
        pd.show();
        super.onPageStarted(view, url, favicon);
    }

    @Override
    public void onPageFinished(WebView view, String url) {
        pd.dismiss();
        super.onPageFinished(view, url);
    }

请帮我解决这个问题并告诉我错误 我确实导入了 android.app.ProgressDialog;

Answer 1

  ProgressDialog pd; //Global
  pd=new ProgressDialog(MainActivity.this); // OnCreate
        pd.setTitle("Please Wait..");
        pd.setMessage("Your Internet is Slow..");


    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
        super.onPageStarted(view, url, favicon);  // Should be First
        pd.show();
    }

    @Override
    public void onPageFinished(WebView view, String url) {
        super.onPageFinished(view, url); //Should be First 
        pd.dismiss();
    }