我无法显示的Android Webview

Question

https://mobilogr.uludag.edu.tr/Login.aspx

I can't open this website in Android webview

WebSettings settings = mWebView.getSettings();
    settings.setJavaScriptEnabled(true);
    settings.setUseWideViewPort(true);
    settings.setSupportMultipleWindows(true);
    settings.setAllowFileAccess(true); 
    mProgressDialog = ProgressDialog.show(this, "Uygulama Yükleniyor",
            "...yükleniyor...");
    mWebView.setWebViewClient(new WebViewClient() {

mWebView.setWebViewClient(new WebViewClient() {

        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);

            return true;
        }

        public void onPageFinished(WebView view, String url) {
            if (mProgressDialog.isShowing()) {
                mProgressDialog.dismiss();
            }
        }
    });
    mWebView.loadUrl("https://mobilogr.uludag.edu.tr/Login.aspx");

Answer 1

请检查您的android Android Manifest是否具有Internet权限，如下所示

<uses-permission android:name="android.permission.INTERNET" /> 

Answer 2

Does your application have the permission to go on the internet?

<uses-permission android:name="android.permission.INTERNET" />

also, you want to go to this website, but your url in your script goes to another?

Answer 3

I have faced the similar issue. The easiest way is to debug and see, the page may have a broken javascript. You need to remote debug which give you clear error in console.

Try this : https://developer.chrome.com/devtools/docs/remote-debugging

Answer 4

something is wrong with the certificate.

if your ssl Certificate expired or not trusted,webview will refuse to load the webpage. To avoid this ,you should override onReceivedSslError method like this:

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

        @Override
        public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
          // super.onReceivedSslError(view, handler, error);
          // ignore ssl error
            handler.proceed();
        }
    });

i try this,everything is OK.