Android Question How to detect Screen On / Screen Off by intent?

[susu]

Hi,
I can detect screen on/off by using PhoneEvents but to check it for long run, I need to use service and must to display notification icon. So I want to detect it by intent with this.

Manifest code:

AddPermission(android.permission.READ_PHONE_STATE)
AddReceiverText(service1, 
<intent-filter>
        <action android:name="android.intent.action.SCREEN_OFF"/>
        <action android:name="android.intent.action.SCREEN_ON"/>
 </intent-filter>
)

service1 code:

Sub Service_Start (StartingIntent As Intent)
    If StartingIntent.Action = "android.intent.action.SCREEN_ON" Then
        Log("Screen On")
    End If

    If StartingIntent.Action = "android.intent.action.SCREEN_OFF" Then
        Log("Screen Off")
    End If
End Sub

However, it didn't work. So I need your suggestions. Thank you.

 

[Erel]

It will not work as these intents can only be intercepted with dynamic filter (such as the filter created by PhoneEvents).

You will need to run a foreground service for this.

 

[susu]

But I'm using an app that can detect screen on/off without using service. How can they do that?

 

[Erel]

Hard to say.

 

[Erel]

I've checked the app you've sent me. It keeps a service running all the time (and probably an activity as well) so it has no problem listening to this intent.

 

[susu]

If it use a service why I don't see notification icon? (Tested it on Android 5.1.1).

 

[Erel]

The process is running all the time as the drawings are made by the application. I'm not sure how exactly did this app is implemented but it doesn't have any problem monitoring the user present intent.

 

[susu]

The process is running all the time.

I kill this app from recent list, even clean RAM but it still running.

it doesn't have any problem monitoring the user present intent

Could you please give me a hint? I just know only one way by using Service.

 

[Erel]

Check this libraries: https://www.b4x.com/android/forum/threads/tooleap-library-floating-notifications-and-miniapps.41136/
https://www.b4x.com/android/forum/threads/chargeable-rsstandout-3-0-floating-apps.45339/