English 中文(简体)
如何拦截网络视图中的“找不到页面”错误?
原标题:How does one intercept the "Page Not Found" error in webview?

I am writing an app containing the WebView. and I want to put in some functionality to interecpt the "Page Not Found" message in case the content I am trying to show in my app ever is offline or for some other reason unreachable. I tried using the onReceivedError() but to no avail. Unless perhaps my syntax is wrong, but if soI don t see the error. can someone help?

代码:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    mWebView = (WebView) findViewById(R.id.webview);
    mWebView.getSettings().setJavaScriptEnabled(true);
    mWebView.loadUrl("http://www.somesite.net");

    mWebView.setWebViewClient(new HelloWebViewClient()); 

    mWebView.setWebViewClient(new WebViewClient() {
    @Override
    public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
        Log.i("WEB_VIEW_TEST", "error 代码:" + errorCode);
        super.onReceivedError(view, errorCode, description, failingUrl);
        //TO DO - do something else in here if the site is down
        }
      });


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

    }
}
问题回答

应在加载url之前设置WebViewClient。

刚发现这个。onReceivedError()工作正常。当错误发生时,您将收到一个-2。





相关问题
Android - ListView fling gesture triggers context menu

I m relatively new to Android development. I m developing an app with a ListView. I ve followed the info in #1338475 and have my app recognizing the fling gesture, but after the gesture is complete, ...

AsyncTask and error handling on Android

I m converting my code from using Handler to AsyncTask. The latter is great at what it does - asynchronous updates and handling of results in the main UI thread. What s unclear to me is how to handle ...

Android intent filter for a particular file extension?

I want to be able to download a file with a particular extension from the net, and have it passed to my application to deal with it, but I haven t been able to figure out the intent filter. The ...

Android & Web: What is the equivalent style for the web?

I am quite impressed by the workflow I follow when developing Android applications: Define a layout in an xml file and then write all the code in a code-behind style. Is there an equivalent style for ...

TiledLayer equivalent in Android [duplicate]

To draw landscapes, backgrounds with patterns etc, we used TiledLayer in J2ME. Is there an android counterpart for that. Does android provide an option to set such tiled patterns in the layout XML?

Using Repo with Msysgit

When following the Android Open Source Project instructions on installing repo for use with Git, after running the repo init command, I run into this error: /c/Users/Andrew Rabon/bin/repo: line ...

Android "single top" launch mode and onNewIntent method

I read in the Android documentation that by setting my Activity s launchMode property to singleTop OR by adding the FLAG_ACTIVITY_SINGLE_TOP flag to my Intent, that calling startActivity(intent) would ...

From Web Development to Android Development

I have pretty good skills in PHP , Mysql and Javascript for a junior developer. If I wanted to try my hand as Android Development do you think I might find it tough ? Also what new languages would I ...

热门标签