I am using an applicationMusicPlayer and when i try to change the volume appear the visual notification, as shown in the picture. Here the code I am using:
[MPMusicPlayerController applicationMusicPlayer] setVolume:newVolune];
Anyone knows how to hide this notification?
I don't know where the docs says so, but if you add a MPVolumeView
view to your app the system volume overlay goes away. Even if it is not visible:
- (void) viewDidLoad
{
[super viewDidLoad];
MPVolumeView *volumeView = [[MPVolumeView alloc] initWithFrame: CGRectZero];
[self.view addSubview: volumeView];
[volumeView release];
...
}
You can use the hardware volume buttons, the setVolume
method or directly interact with the control (if visible) that the overlay doesn't show up.
For iOS6 I had to set an image with alpha 0 and non-zero size to the MPVolumeView
's image fields in order to get the default volume change notification to disappear.
// hide the hardware volume slider
UIImage *thumb = [[UIImage alloc] initWithCIImage:[UIImage imageNamed:@"volumeHider"].CIImage scale:0.0 orientation:UIImageOrientationUp];
MPVolumeView *hwVolume = [[MPVolumeView alloc] initWithFrame:self.frame];
[hwVolume setUserInteractionEnabled:NO];
hwVolume.showsRouteButton = NO;
[hwVolume setVolumeThumbImage:thumb forState:UIControlStateNormal];
[hwVolume setMinimumVolumeSliderImage:thumb forState:UIControlStateNormal];
[hwVolume setMaximumVolumeSliderImage:thumb forState:UIControlStateNormal];
[self addSubview:hwVolume];
This made the MPVolumeView
be "visible" on the screen, but invisible to the user.
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