java - 加载 Webview 后进度对话框不会关闭

Question

加载 Webview 后进度对话框不会关闭，而是在加载 Webview 后继续加载。

public class MainActivity extends AppCompatActivity {

    private WebView webView;
    ProgressDialog pd;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        pd = ProgressDialog.show(MainActivity.this, "Progress Dialog", "Loading...");

        webView = (WebView) findViewById(R.id.webview);
        webView.setWebViewClient(new myWebClient());
        webView.getSettings().setJavaScriptEnabled(true);
        webView.loadUrl("http://kkgupta.mmiswebtech.com");



        webView.setWebViewClient(new WebViewClient() {
            public void onReceivedError(WebView webView, int errorCode, String description, String failingUrl) {
                try {
                    webView.stopLoading();
                } catch (Exception e) {
                }

                if (webView.canGoBack()) {
                    webView.goBack();
                }

                webView.loadUrl("file:///android_asset/error.html");
                AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create();
                alertDialog.setTitle("Error");
                alertDialog.setMessage("Check your internet connection and try again.");
                alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, "Try Again", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        finish();
                        startActivity(getIntent());
                    }
                });

                alertDialog.show();
                super.onReceivedError(webView, errorCode, description, failingUrl);
            }
        });
    }

     class myWebClient extends WebViewClient
    {
        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            super.onPageStarted(view, url, favicon);
        }


        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {

            view.loadUrl(url);
            return true;

        }
    }





    @Override
    // This method is used to detect back button
    public void onBackPressed() {
        if(webView.canGoBack()) {
            webView.goBack();
        } else {
            // Let the system handle the back button
            super.onBackPressed();
        }
    }
}

Answer 1

您需要将 onPageFinished() 添加到 MyWebClient 中，并在其中调用 ProgressDialog 上的 dismiss():

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