Android Question Set Volume Programatica[ly

[Roger Daley]

Hi All,

I am trying to set the volume a Beep is played at and then restore the volume. I thought this would be simple but the compiler doesn't like my code.
It looks straight forward but I'm missing something.
Any help much appreciated.

The relevant part of code.

VolMus = Beep1.VOLUME_MUSIC        'Save current volume setting in integer '
Beep1.VOLUME_MUSIC = 5                  'Set volume for Beep1'
Beep1.Beep
Sleep(21)
Beep1.VOLUME_MUSIC = VolMus       'Restore setting'

The Compiler shows the following:

Compiling generated Java code. Error
B4A line: 5974
Beep1.VOLUME_MUSIC = 5
src\b4a\configulator_calculator\main.java:9066: error: cannot assign a value to final variable VOLUME_MUSIC
parent.mostCurrent._beep1.VOLUME_MUSIC = (int) (5);

I've searched the Forum but failed.
Thanks in advance

Regards Roger

 

[Erel]

VOLUME_XXX are constants that are passed to Beeper.Initialize2. They set the voice channel.

You can se the volume with Phone.SetVolume. Make sure to wrap it in a Try / Catch block as there are cases where it will throw an exception.

 

[Roger Daley]

VOLUME_XXX are constants that are passed to Beeper.Initialize2. They set the voice channel.

You can se the volume with Phone.SetVolume. Make sure to wrap it in a Try / Catch block as there are cases where it will throw an exception.

Thanks Erel,

I will give it a try.
It seems an odd way to go when there is "XXXX.VOLUME_MUSIC".
I don't think Beep comes through the Voice Channel, but through the Music channel.

Regards Roger

 

[Roger Daley]

Can anyone point me towards a working example of setting the volume for BEEP and restoring Volume Setting after beep?

Regards Roger

 

[kimstudio]

Beep generates a SINE or PULSE wave internally according to frequency and play it with a certain amplitude, so @Erel can add a new parameter as volume for example between 0 to 1 and multiply it to the wave samples generated to control the Beep volume. It is the tiniest thing for Erel to make but it will change the Audio library API.