在没有互联网的情况下加载网页时出现webview错误 [英] webview error while loading a page without internet

问题描述

我是android的新手.我编写了android应用程序的代码，以在webview中查看网页. 如果没有Internet，它将加载默认活动.或者它将加载网页..但是同样如果通过Webview浏览，Internet进入并且重新加载，它将加载错误活动.找不到类似于浏览器的页面错误..我该怎么办..请帮帮我..我真的被困在这里...

I am New to android.. I coded and android app to view a webpage in webview.. If internet is not there it will loads a default activity.. Or it will loads the webpage.. But Also if browsing via webview, And internet goes and a reload works it loads the error activity.. But in between that short seconds the default no page found error similar to browser comes for a second.. What will i do.. Please help me out.. I am really stuck here...

    public void onCreate(Bundle savedInstanceState) {


    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
    setProgressBarIndeterminateVisibility(true); 
    check = new CheckInterNetConnection(getApplicationContext());
    isInternetPresent = check.isConnectingToInternet();
    setContentView(R.layout.main);

    CookieManager cookieManager = CookieManager.getInstance(); 
    cookieManager.setAcceptCookie(true); 
 mainWebView = (WebView) findViewById(R.id.mainWebView);

    WebSettings webSettings = mainWebView.getSettings();
    webSettings.setJavaScriptEnabled(true);

    mainWebView.setWebViewClient(new MyCustomWebViewClient());
    mainWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
   mainWebView.setWebViewClient(new WebViewClient() {
        String desc="Oops something went Wrong";
           public void onReceivedError(WebView view, int errorCode, String desc, String failingUrl) {
            // Toast.makeText(AndroidMobileAppSampleActivity.this, "Oh no! " + desc, Toast.LENGTH_SHORT).show();
            Intent i = new Intent(AndroidMobileAppSampleActivity.this, error.class);
                        startActivity(i);
                         finish(); 
           }
         });
   if(isInternetPresent)
   {

            mainWebView.loadUrl("http://www.mybuzzin.in/lite");
    }

 else{
        //no connection
          Toast toast = Toast.makeText(AndroidMobileAppSampleActivity.this, "No Internet Connection", Toast.LENGTH_LONG);
          toast.show();  
}


}   

@Override
public void onBackPressed()
{
        new AlertDialog.Builder(this)
        .setIcon(android.R.drawable.ic_dialog_alert)
        .setTitle("Exit!")
        .setMessage("Are you sure you want to Exit?")
        .setPositiveButton("Yes", new DialogInterface.OnClickListener()
        {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                finish();    
            }

        })
        .setNegativeButton("No", null)
        .show();    
    }   

private class MyCustomWebViewClient extends WebViewClient {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        view.loadUrl(url);
        setProgressBarIndeterminateVisibility(true);
        return true;
    }
    @Override
    public void onPageFinished(WebView webview, String url){
        super.onPageFinished(webview, url);
        setProgressBarIndeterminateVisibility(false);
     }
}

}

推荐答案

这非常简单

您可以在请求网址之前检查互联网的连通性

you can check internet conncection before requesting url

 final ConnectivityManager connMgr = (ConnectivityManager) YourClass.this
            .getSystemService(Context.CONNECTIVITY_SERVICE);

    final android.net.NetworkInfo wifi = connMgr
            .getNetworkInfo(ConnectivityManager.TYPE_WIFI);

    final android.net.NetworkInfo mobile = connMgr
            .getNetworkInfo(ConnectivityManager.TYPE_MOBILE);

    if (wifi.isConnected() || mobile.isConnected()) {

 webView.loadUrl(url);  

}else{
startActivity(new Intent(This.class,other.class));
}

//所需的权限

将这些权限添加到清单文件

add these permissions to your manifest file

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

在gmail的rajeshsaini890与我联系以获得更多帮助

for more help contect me at rajeshsaini890 at gmail

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