How to display a Dialog from a Service

I have read really a lot of posts about this topic, however nothing works for me (or doesn’t have the effect I wish).

I have a an application, that after logging in starts a background Service (implementation of the Service class). This service syncs itself with a Server and if a new order comes, it creates a notification.

  • Is there a way to set drawable's Alpha using XML?
  • Installing ADT on Eclipse
  • AppCompat 23.3 Support Vectors no longer work?
  • how to listen for changes in Contact Database
  • Android READ_EXTERNAL_STORAGE permission not working
  • Picking an image file from Gallery using FileProvider
  • So far, everything works great, I have the notification and the Toast message. However, I would like to have a dialog, that notifies the user about the new order.

    As I understood, you can start an activity from within the service, which displays the dialog. This works, but the activity starts on top of the current activity stack and displays the dialog. I have an activity with no view attached and it correctly displays the dialog, however, on a black background.

    What I want is to display the dialog on the current activity, causing the actual background(the running activity) to fade and display the dialog.

    Is this somehow possible?

    Thank you,

    Related posts:

    android include tag - invalid layout reference
    Android App Development: Two icons getting created and I only need one
    Custom theme interferes with snackbar background color
    Android Studio - “Unmappable character for encoding UTF-8”
    Add drop shadow effects to EditText Field
    Saving MapFragment (Maps v2) State in Android
  • How to retrieve style attributes programmatically from styles.xml
  • Android list view inside a scroll view
  • Android - Activity Home/Up arrow has additional padding/margin with SDK 24
  • Custom View Extending Relative Layout
  • Does the presenter having knowledge of the Activity / Context a bad idea in the MVP pattern?
  • Is there any way to get GPU information?
  • 5 Solutions collect form web for “How to display a Dialog from a Service”

    I highly, highly, HIGHLY recommend that you DON’T do this (it goes against Android design and UI guidelines). Notifications are the preferred way to accomplish what you are doing (which it sounds as if you have already accomplished).

    That being said, if you must do it, I would recommend just using a Dialog themed activity. That way you don’t have to start up a separate dialog. Please see for how to do this.

    We can show dialog from service only if it is a system alert dialog. So, set TYPE_SYSTEM_ALERT window layout parameter to Dialog as follows:


    But, it needs SYSTEM_ALERT_WINDOW permission. So, don’t forget to add this permissin in Manifest file.

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

    you can start by learning on how to create an activity that looks like a dialog (no title bar, transparent background, “floating” effect, etc.)
    and no, you can’t just start a dialog without an activty

    No, you can’t hijack activity that is not “yours” and command it to show dialog.
    Your approach of starting your own activity is the classic one.

    You cannot show a dialog. But you can go the alernative way by inflating your customized view so that you can show a dialog on the screen whenver certain conditions are met.

    Android Babe is a Google Android Fan, All about Android Phones, Android Wear, Android Dev and Android Games Apps and so on.