ionic2 - Comment réparer la connexion au serveur était infructueux. (file android_asset/www/index.html)

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public class MainActivity extends CordovaActivity {     @Override     public void onCreate(Bundle savedInstanceState)     {         super.onCreate(savedInstanceState);          // enable Cordova apps to be started in the background         Bundle extras = getIntent().getExtras();         if (extras != null && extras.getBoolean("cdvStartInBackground", false)) {             moveTaskToBack(true);         }          // Set by <content src="index.html" /> in config.xml         //loadUrl(launchUrl);         super.loadUrl("file:///android_asset/www/index.html");      } }