android - 显示带有对话进度和 webchrome 客户端的 webview

Question

我的应用程序有 webview，我添加了用于显示加载的进度对话框，直到 web 完成加载。我在谷歌搜索并得到了很好的解决方案

wv.setWebChromeClient(new MyWebChromeClient());
wv.setWebViewClient(new MyWebViewClient());
wv.loadUrl("http://www.google.com"); 

     private class MyWebViewClient extends WebViewClient {
        @Override
         public boolean shouldOverrideUrlLoading(WebView view, String url) 
        {
            view.loadUrl(url);
            return true;
        }

        @Override
     public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
            alertdialog.setTitle("Error");
            alertdialog.setMessage(description);
            alertdialog.setButton("OK", new DialogInterface.OnClickListener() {
             public void onClick(DialogInterface dialog, int which) {
                 //return;
                finish();
             }
         });
            alertdialog.show();
     }
    }


    private class MyWebChromeClient extends WebChromeClient {

        @Override
        public void onProgressChanged(WebView view, int progress) {
            progressDialog.show();
            progressDialog.setProgress(0);
            activity.setProgress(progress * 1000);

            progressDialog.incrementProgressBy(progress);

            if(progress == 100 && progressDialog.isShowing())
                progressDialog.dismiss();
        }

    }

但我的问题是，如何让进度对话框在我启动后只出现一次，因为现在如果我单击图片示例(在 google.com 中)，进度对话框将再次出现。

Answer 1

this.getWindow().requestFeature(Window.FEATURE_PROGRESS);
            setContentView(R.layout.info);

            mProgressDialog = new ProgressDialog(this);
            mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
            mProgressDialog.setMessage("Please wait...");
            mProgressDialog.setCancelable(false);
            mProgressDialog.setMax(100);
            mProgressDialog.show();

            WebView webView = (WebView) findViewById(R.id.webview);
            webView.setVisibility(View.VISIBLE);
            webView.getSettings().setJavaScriptEnabled(true);

            webView.setWebChromeClient(new WebChromeClient() {
                public void onProgressChanged(WebView view, final int progress)
                {
                    activity.setTitle("Loading...");
                    activity.setProgress(progress * 100);
                    mProgressDialog.setProgress(progress );




                    if(progress == 100)
                    {
                        activity.setTitle(R.string.app_name);
                        mProgressDialog.dismiss();
                    }

                }
            });

            webView.setWebViewClient(new WebViewClient() {
                @Override
                public void onReceivedError(WebView view, int errorCode, String description, String failingUrl)
                {
                }

                @Override
                public boolean shouldOverrideUrlLoading(WebView view, String url)
                {
                    view.loadUrl(url);
                    return true;
                }
            });

            webView.loadUrl("http://www.google.com");