iOS Question Volume Buttons Events

[Utopians]

Is there a way to check, if the Volume Button was Pressed and Released?

 

[Erel]

You cannot track the button directly. You can however track the volume level with this code:

Private Sub Application_Start (Nav As NavigationController)
   NavControl = Nav
   Page1.Initialize("Page1")
   Page1.Title = "Page 1"
   Page1.RootPanel.Color = Colors.White
   NavControl.ShowPage(Page1)
   Dim no As NativeObject = Me
   no.RunMethod("addListener", Null)
   Volume_Changed
End Sub

#if OBJC
@import MediaPlayer;
@import AVFoundation;
- (void)addListener {
  AVAudioSession* audioSession = [AVAudioSession sharedInstance];   
   [audioSession setActive:YES error:nil];
     [audioSession addObserver:self
  forKeyPath:@"outputVolume"
  options:0
  context:nil];
     
  [[MPMusicPlayerController applicationMusicPlayer] volume];
   
}
-(void) observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {

  if ([keyPath isEqual:@"outputVolume"]) {   
  [self.bi raiseEvent:nil event:@"volume_changed" params:nil];
  }
}
#end if

Private Sub Volume_Changed
   Dim no As NativeObject
   Dim volume As Float = no.Initialize("MPMusicPlayerController").RunMethod("applicationMusicPlayer", Null).GetField("volume").AsNumber
   Log(volume)
End Sub