Android Question detecting android.net.wifi.WIFI_STATE_CHANGED in background

[freedom2000]

HI,

I would like to detect a change in Wifi conectivity in order to wake up an App

I know that Phone library offers this. But it would need a foreground service with this annoying permament notification.

My question is :
is there a way to intercept android.net.wifi.WIFI_STATE_CHANGED with a static intent ?

Thanks

 

[Erel]

PhoneEvents ConnectivityChanged event is based on the following action: android.net.conn.CONNECTIVITY_CHANGE

You can use an intent filter to listen to this event.

AddReceiverText(s1, 
<intent-filter>
 <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>)

Are you asking about this event?

 

[freedom2000]

Thank you for your answer.

Yes I was asking for the right intent, but also if I could use it with a "static intent" or if I must use a "broadcast receiver".

As far as I have understood, static intents are handled at the system level an can launch the App, and dynamic ones (broadcast receiver) need to be handle inside the App so are only triggered when the App process is launched.

Am I right ?

And of course what I would like is that the system launchs my App when connectivity change (even if it is not yet started).

 

[Erel]

See this tutorial: https://www.b4x.com/android/forum/t...sms-messages-in-the-background.20103/#content

You can use a static filter for this intent.

 

[freedom2000]

Thank you for this answer and the link.

I will try and post the result

 

[freedom2000]

Ok it works

Add this in your Manifest :

'check for any connectivity change
AddReceiverText(CheckWifi,
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>)

Create a service with the Name "CheckWifi" (same name as in your Intent)

'Service module
Sub Process_Globals 
End Sub
Sub Service_Create
End Sub

Sub Service_Start(startingIntent As Intent)
   If startingIntent.Action = "android.net.conn.CONNECTIVITY_CHANGE" Then
      ToastMessageShow("wifichanged", True)
   End If
End Sub

And if you switch off or On your Wifi, you get the message

Even when the App is killed

Everything is soooo easy with @Erel's help !

 

[dcoun]

I think the above does not work anymore when targeting Android 7.0 apps and up.
https://developer.android.com/training/monitoring-device-state/connectivity-monitoring.html
What is the solution now? Job scheduler or Service running in the foreground?

 

[DonManfred]

Start with creating a new Thread instead of posting to an old Thread.

 

[Erel]

Job Scheduler will not help here. The OS doesn't want to wake apps for this action.

You can still monitor with a foreground service. However that means that you need to keep your app running all the time.

 

[dcoun]

Job Scheduler will not help here. The OS doesn't want to wake apps for this action.

You can still monitor with a foreground service. However that means that you need to keep your app running all the time.

Real thanks.
I am starting a new thread as I believe this is something that it is need:
https://www.b4x.com/android/forum/threads/which-is-the-best-way-to-monitor-changes-if-api-23.91066/