CODEWITHSUNDEEP
javaandroid
Jingtai Liu
Jingtai Liu

Reputation: 11

How to create a pop-up window in Conversation Page?

I wanted to use "AlertDialog" to create pop-up window in Conversation Page, but system showed " Unable to add window".

Hi, I wanted to create a "Strong-Remind" function : The user could bookmark one particular contact / group, and his/her phone will vibrate for 5-10 seconds when the user receives the message sent by the particular contact/group.

In my design,the user can stop the vibrate when they click the "confirm "button in pop-up window, but it cannot be achieved, I tried to add this function in mobicomkit\src\main\java\com\applozic\mobicomkit\api\notification\NotificationService.java, the vibrator has been created and worked well, but the pop-up windown cannot be created.

public void warn(){
    vibrator = 
 (Vibrator)context.getSystemService(Context.VIBRATOR_SERVICE);
    long[] pattern = {100, 400, 100, 400};
    vibrator.vibrate(pattern, 2);
    final  AlertDialog.Builder builder2 = new AlertDialog.Builder(context);
    builder2.setTitle("Warning")
            .setMessage("You have one important message !")
            .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog,
                                    int which) {
                    vibrator.cancel();
                }
            })
            .show();

 }


 Caused by: android.view.WindowManager$BadTokenException: Unable to add 
 window -- token null is not valid; is your activity running?
    at android.view.ViewRootImpl.setView(ViewRootImpl.java:785)
    at 
 android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:356)
    at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:94)
    at android.app.Dialog.show(Dialog.java:352)

Upvotes: 1

Views: 32

Answers (1)

cowboi-peng
cowboi-peng

Reputation: 803

final  AlertDialog.Builder builder2 = new AlertDialog.Builder(context);

This context you passed is not a valid context , you could try another.

Upvotes: 1

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