Jak możemy obsługiwać błędy HTTP, takie jak: 401, 403, 404, 500 w android.webview?

Question

Android.webview.WebViewClient klasa pozwala działalność otrzyma WebViewClient.onReceivedError oddzwanianie, gdy WebView jest w stanie załadować URL, ale nie ma zwrotna za błędy HTTP, takich jak: 401, 403, 404, 500. Jak możemy obsłużyć ten błąd w WebView?

Oto kod:

public class WebViewActivity extends Activity { 
WebView webView; 
public String TAG="log"; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.webview); 
     webView = (WebView) findViewById(R.id.webview1); 
     webView.getSettings().setJavaScriptEnabled(true); 
     webView.loadUrl("http://192.168.0.6:8081/karbonn/add/apk//3_1/"); 


    // webView.setWebChromeClient(new WebChromeClient()); 
webView.setWebViewClient(new WebViewClient(){ 
    @Override 
    public void onPageFinished(WebView view, String url) { 
     // TODO Auto-generated method stub 
     super.onPageFinished(view, url); 
      String pageTitle = view.getTitle(); 
      Toast.makeText(getBaseContext(), pageTitle, Toast.LENGTH_SHORT).show(); 
     // view.get 
     /* if (pageTitle.contains("Apache Tomcat/7.0.40 - Error report")) { 
       // view.goBack(); 
       WebViewActivity.this.finish(); 
      //view.loadUrl("https://www.google.co.in/"); 
     }*/ 

    } 

    @Override 
    public void onReceivedError(WebView view, int errorCode, 
      String description, String failingUrl) { 
     //Log.e(Tag, "onReceivedError"); 
     //int i=errorCode; 
     if (errorCode == ERROR_HOST_LOOKUP || errorCode == ERROR_FILE_NOT_FOUND) { 
      // TODO your dialog here 
      Log.e("error", "ERROR_FILE_NOT_FOUND"+errorCode); 
     } 
     Log.e("error", "onReceivedError"+errorCode); 
     if (errorCode==-10) { 
      WebViewActivity.this.finish(); 
     } 


        String errormsg=description; 
      String url=failingUrl; 

     // TODO Auto-generated method stub 
     Log.e("error code:" ,""+errorCode); 
     super.onReceivedError(view, errorCode, description, failingUrl); 
    } 

    @TargetApi(Build.VERSION_CODES.HONEYCOMB) 
    @Override 
    public WebResourceResponse shouldInterceptRequest(WebView view, 
      String url) { 
     // TODO Auto-generated method stub 
     Log.e("WebResourceResponse" ,""+url); 
     return super.shouldInterceptRequest(view, url); 
    } 

    @Override 
    public boolean shouldOverrideKeyEvent(WebView view, KeyEvent event) { 
     // TODO Auto-generated method stub 
     return super.shouldOverrideKeyEvent(view, event); 
    } 

    @Override 
    public boolean shouldOverrideUrlLoading(WebView view, String url) { 
     // TODO Auto-generated method stub 
     String myurl=url; 
     Log.e("url", ""+myurl); 
     return super.shouldOverrideUrlLoading(view, url); 
    } 
}); 
     //webView.loadUrl("http://trax.claym.in/click.php?c=209&key=c73n783g2tm2377yd73d6n5m"); 
    //webView.loadUrl("https://www.google.co.in/"); 
     //animation url 
// webView.loadUrl("http://www.dogwonder.co.uk/wp-content/uploads/2009/12/tumblr_ku2pvuJkJG1qz9qooo1_r1_400.gif"); 
} 

@Override 
public boolean onKeyDown(int keyCode, KeyEvent event) { 
    // Check if the key event was the Back button and if there's history 
    if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) { 
     webView.goBack(); 
     return true; 
    } 
    // TODO Auto-generated method stub 
    return super.onKeyDown(keyCode, event); 
} 

} 

Answer 1

Przepraszam, ale nie mogę.

Masz błąd i wątek, o którym mówią deweloperzy.

https://code.google.com/p/android/issues/detail?id=968

Podobnie można zrobić na nowego Androida M (API 23) z nową metodą

public void onReceivedHttpError (WebView view, WebResourceRequest request, WebResourceResponse errorResponse) 

Ref: https://developer.android.com/intl/es/reference/android/webkit/WebViewClient.html#onReceivedHttpError%28android.webkit.WebView,%20android.webkit.WebResourceRequest,%20android.webkit.WebResourceResponse%29

nadzieję, że to pomaga