android - Webview 中的进度对话框

Question

简单地说，每次在我的 webview 中单击新链接时，我如何才能显示进度对话框。我已经尝试了很多教程和方法，但每个教程和方法都只在应用程序最初加载时显示一次对话框。

这是我的代码

 mWebView.setWebViewClient(new WebViewClient() {

             @Override
             public boolean shouldOverrideUrlLoading(WebView view, String url)
             {
                 view.loadUrl(url);
                 return true;
             }
            ProgressDialog dialog = ProgressDialog.show(myActivity.this, "", 
                            "Loading. Please wait...", true);
            @Override
            public void onPageFinished(WebView view, String url) {
             dialog.dismiss();
           }

Answer 1

看看这个:

wvCouponsAndOffers.setWebViewClient(new WebViewClient() {
        ProgressDialog progressDialog = new ProgressDialog(CouponsWebViewUI.this);

        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            super.onPageStarted(view, url, favicon);
            progressDialog.setMessage(StringConstants.PROGRESS_DIALOG_MSG);
            progressDialog.setCancelable(false);
            progressDialog.setOnKeyListener(new OnKeyListener(){
                @Override
                public boolean onKey(DialogInterface dialog, int keyCode,
                        KeyEvent event) {
                    if(keyCode == KeyEvent.KEYCODE_SEARCH) {
                        return true;
                    }
                    else
                        return false;
                }});
            progressDialog.show();
        }
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            progressDialog.setMessage(StringConstants.PROGRESS_DIALOG_MSG);
            progressDialog.setCancelable(false);
            progressDialog.setOnKeyListener(new OnKeyListener(){
                @Override
                public boolean onKey(DialogInterface dialog, int keyCode,
                        KeyEvent event) {
                    if(keyCode == KeyEvent.KEYCODE_SEARCH) {
                        return true;
                    }
                    else
                        return false;
                }});
            progressDialog.show();
            view.loadUrl(url);
            return true;
        }

        public void onPageFinished(WebView view, String url) {
            if (progressDialog.isShowing()) {
                progressDialog.dismiss();
            }
        }

    });