Android Question Start a service or app pressing a button from the device.

[George Anifantakis]

Hi, i need to start a service or activity by pressing a button from a Bluetooth remote device from home screen or when the device is idle.

Below the logs when pressing the button.

ViewRoot's KeyEvent { action=ACTION_DOWN, keyCode=KEYCODE_ENTER, scanCode=28, metaState=0, flags=0x8, repeatCount=0, eventTime=33143014, downTime=33143014, deviceId=29, source=0x101 } to com.android.keyguard.KeyguardViewManager$ViewManagerHost{4211a9f8 V.E..... ........ 0,0-720,1280}
interceptKeyTi keyCode=66 down=false repeatCount=0 keyguardOn=true mHomePressed=false canceled=false
ViewRoot's KeyEvent { action=ACTION_UP, keyCode=KEYCODE_ENTER, scanCode=28, metaState=0, flags=0x8, repeatCount=0, eventTime=33143017, downTime=33143014, deviceId=29, source=0x101 } to com.android.keyguard.KeyguardViewManager$ViewManagerHost{4211a9f8 V.E..... ........ 0,0-720,1280}

It sends KEYCODE_ENTER. I've tried using a static receiver with the below

AddReceiverText(s1,
<intent-filter androidriority="2147483647">
<action android:name="android.intent.action.KEYCODE_ENTER"/>
</intent-filter>
)

but the service didn't started. Perhaps the event "android.intent.action.KEYCODE_ENTER" is not correct. Any ideas how to trap this?

 

[Erel]

Try it with this action:
android.intent.action.MEDIA_BUTTON

 

[George Anifantakis]

android.intent.action.MEDIA_BUTTON does not trigger the service. If it helps, i trap the keycode in activity and the reference number is 66.

 

[Erel]

If it behaves as a regular key event then you will only be able to intercept it when your activity is in the foreground.

 

[George Anifantakis]

I managed to activate it using the other button of the remote shutter that sends VOLUME_CHANGED event but it doesn't work when the phone is idle, screen off. Is there any workaround?

 

[lemonisdead]

If it doesn't work when the phone is IDLE this is what Erel suggested : the activity is receiving the event when it is in the foreground (normal behavior).
If you want to be able to receive the event even when the activity is not in the foreground, you would have to register an intent receiver as Erel suggested above. We have tried to work on such intent previously (https://www.b4x.com/android/forum/threads/android-intent-action-media_button-again.48890/). Perhaps could this help.
And about registering an intent receiver in the Manifest file (https://www.b4x.com/android/forum/t...sms-messages-in-the-background.20103/#content).

Edit : something about volume press and services https://www.b4x.com/android/forum/threads/intercept-volume-button-press.28179/#post-163378

 

[George Anifantakis]

I've tried with BroadcastReceiver library as well. The behavior is the same as using a static receiver in the manifest file. The event works only if the phone is active no matter if the application is in the foreground or in the background. If the device is idle screen off or locked if doesn't work at all....
I could not been able to find any workaround so far..

Thanks a lot for your help.

 

[lemonisdead]

If the device is idle screen off or locked if doesn't work at all

If you use the BroadcastReceiver library so you would have a service running in the background. Perhaps the PhoneWakeState to manage (put a PartialLock) ?
Sorry no more idea

 

[George Anifantakis]

I've tried this as well. No luck... Thanks a lot..