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Developer
Developer
Posts: 132
Registered: ‎08-24-2011
My Device: Z10 LE + Playbook
My Carrier: MTS Ukraine
Accepted Solution

Override system sound

Hello guys!

 

So my problem is that I'm working on alarm application and need to override system sound. So when user set his phone in silent mode my app still will play a sound.

 

Any help would be much appreciated! 

Thank you!
----------------------------
My Apps: Alchemy Game | Image Resizer | Jam! | Traffic Signs: USA | Radio Record
My Blog: http://bb10pro.com
Highlighted
Developer
Posts: 121
Registered: ‎03-13-2012
My Device: P'9981, Z10, Q10, Z30, Passport
My Carrier: BT

Re: Override system sound

Hiya,

 

This is definitley possible - you can use mmr_play() to play the audio once the context is set up, and you can set the system volume using:

 

rc = audiomixer_get_output_level(AUDIOMIXER_OUTPUT_SPEAKER, &oldVolume);
if (rc == BPS_SUCCESS) {
audiomixer_set_output_level(AUDIOMIXER_OUTPUT_SPEAKER, newVolume);
} else {
//Failed to query the output level
}

 

I recommend that after the alarm stops you set the sound back to the original so the user doesn't unexpectedly have everything on loud after the alarm (oldVolume is current volume level before any changes are made to the volume level in the above code).

 

I think this has to be done in C++ as system volume controls don't seem to be exposed yet in QML...

 

The Native PlayAudio example (which I think was actually for the PlayBook) is what you need to look at:

 

https://github.com/blackberry/NDK-Samples/tree/master/PlayAudio

 

 

Cheers!

Developer
Developer
Posts: 132
Registered: ‎08-24-2011
My Device: Z10 LE + Playbook
My Carrier: MTS Ukraine

Re: Override system sound

Thanks a lot. That works! 

Thank you!
----------------------------
My Apps: Alchemy Game | Image Resizer | Jam! | Traffic Signs: USA | Radio Record
My Blog: http://bb10pro.com