Android Question How to make the Vollume Down/UP keys still work when the device on early suspend?

[LUHUANWEI]

I want to have an APP to play Media files on Bluetooth earphone, in order to save the power for the phone, I want to switch off the screen and use the Vollume Down/UP keys for controlation, but I don't know how to keep the Vollume Down/UP keys and Bluetooth earphone work when I swith off the display (The phone will get to sleep?).
Thanks in advance.

 

[Erel]

Move MediaPlayer to a service.

1. Call Service.StartForeground
2. Acquire a partial lock with PhoneWakeState.

This will prevent the device from sleeping.

 

[LUHUANWEI]

Hi Erel,
Thanks for your help!
I succeed to move the Mediaplayer to as service, but the Vollume Down/UP keys actions can't be obtain by a service. How can I detect Vollume Down/UP keys press from a service?
By the way, could you pls post some samples to show how to use PhoneWakeState?
Thanks.

 

[Erel]

It is problematic. Check this thread: https://www.b4x.com/android/forum/threads/waking-the-phone-from-volume-buttons.34498/

Using PhoneWakeState is simple: https://www.b4x.com/android/help/phone.html#phonewakestate

Dim pws As PhoneWakeState
pws.PartialLock
'or
pws.KeepAlive(False)