iPhone how to override default settings programmatically

Question

In iPhone, how to override default setting of vibrate and sound programmatically?

Answer 1

You cannot do that unless your doing it for a jailbroken device. Apple will not accept programmatically changing the phone settings. This is ultimately user preference.

Answer 2

I think You cannot(May be Possible if your application is run on a jailbroken device). Because there is no Apple API to access the iPhone settings. But you can Change the setting in your app Bundle.For Vibration You can Go with

 #import <AudioToolbox/AudioServices.h>

and use

 AudioServicesPlaySystemSound(kSystemSoundID_Vibrate); 

for Volume you can Go with

AVSystemController

[[AVSystemController sharedAVSystemController] setVolumeTo:10.0 forCategory:@"Ringtone"];

Try this SO Question and the Best will be however use MPVolumeView (volume slider) is there to change device volume but only through user interaction.

MPVolumeView is a control in toolbox, you need to add MediaPlayer.framework in your project then MPVolumeView will be displayed in toolbox in interface builder.