Android 1.6: “android.view.WindowManager$BadTokenException: Unable to add window — token null is not for an application”

Question

I\'m trying to open a dialog window, but every time I try to open it it throws this exception:

Uncaught handler: thread main exiting due to uncaught exceptio         


        

Answer 1

For nested dialogs this issue is very common, It works when

AlertDialog.Builder mDialogBuilder = new AlertDialog.Builder(MyActivity.this);

is used instead of

mDialogBuilder = new AlertDialog.Builder(getApplicationContext);

this alternative.

Answer 2

This Worked for me--

new AlertDialog.Builder(MainActivity.this)
        .setMessage(Html.fromHtml("<b><i><u>Spread Knowledge Unto The Last</u></i></b>"))
        .setCancelable(false)
        .setPositiveButton("Dismiss",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                    }
                }).show();

Use

ActivityName.this

Answer 3

You can also do this

public class Example extends Activity {
    final Context context = this;
    final Dialog dialog = new Dialog(context);
}

This worked for me !!

Answer 4

Android documents suggests to use getApplicationContext();

but it will not work instead of that use your current activity while instantiating AlertDialog.Builder or AlertDialog or Dialog...

Ex:

AlertDialog.Builder builder = new  AlertDialog.Builder(this);

or

AlertDialog.Builder builder = new  AlertDialog.Builder((Your Activity).this);

Answer 5

Another solution is to set the window type to a system dialog:

dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);

This requires the SYSTEM_ALERT_WINDOW permission:

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

As the docs say:

Very few applications should use this permission; these windows are intended for system-level interaction with the user.

This is a solution you should only use if you require a dialog that's not attached to an activity.

Answer 6

public class Splash extends Activity {

    Location location;
    LocationManager locationManager;
    LocationListener locationlistener;
    ImageView image_view;
    ublic static ProgressDialog progressdialog;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash);
        progressdialog = new ProgressDialog(Splash.this);
           image_view.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                        locationManager.requestLocationUpdates("gps", 100000, 1, locationlistener);
                        Toast.makeText(getApplicationContext(), "Getting Location plz wait...", Toast.LENGTH_SHORT).show();

                            progressdialog.setMessage("getting Location");
                            progressdialog.show();
                            Intent intent = new Intent(Splash.this,Show_LatLng.class);
//                          }
        });
    }

Text here:-
use this for getting activity context for progressdialog

 progressdialog = new ProgressDialog(Splash.this);

or progressdialog = new ProgressDialog(this);

use this for getting application context for BroadcastListener not for progressdialog.

progressdialog = new ProgressDialog(getApplicationContext());
progressdialog = new ProgressDialog(getBaseContext());