Hello
I am very new to android development, i have a simple app with a webview, i
want to check the network status and alert the user if there is no network
connection.
MainActivity.java:
============================================================================
package dk.zerone.vuc;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.view.Menu;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class MainActivity extends Activity {
public final boolean networkCheck() {
ConnectivityManager connec =
(ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
// ARE WE CONNECTED TO THE NET
if ( connec.getNetworkInfo(0).getState() ==
NetworkInfo.State.CONNECTED ||
connec.getNetworkInfo(0).getState() ==
NetworkInfo.State.CONNECTING ||
connec.getNetworkInfo(1).getState() ==
NetworkInfo.State.CONNECTING ||
connec.getNetworkInfo(1).getState() ==
NetworkInfo.State.CONNECTED ) {
return true;
} else if ( connec.getNetworkInfo(0).getState() ==
NetworkInfo.State.DISCONNECTED || connec.getNetworkInfo(1).getState() ==
NetworkInfo.State.DISCONNECTED ) {
return false;
}
return false;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if(networkCheck()) {
// INTERNET IS AVAILABLE, DO STUFF..
} else {
AlertDialog alertDialog = new
AlertDialog.Builder(MainActivity.this).create();
alertDialog.setTitle("Reset...");
alertDialog.setMessage("R u sure?");
alertDialog.setButton("OK", new
DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int
which) {
} });
alertDialog.show();
}
/* Splash screen */
// ...
/* WebView */
WebView webview = new WebView(this);
webview.setWebViewClient(new WebViewClient());
setContentView(webview);
Uri uri = Uri.parse("http://mobil.vucfyn.dk/mobil";);
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
============================================================================
The above code compiles fine, without any errors or warnings, but the dialog is
never shown, i have tried airplane mode in the emulator, and disabling the
network on the computer, no effect.
What am i doing wrong?
Kind regards
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