Detecting Silent Switch in iOS 7 issue - ios

Question

I am using following code to check iPhone silent switch is ON or OFF :-
if (self)
{
self.detector = [SharkfoodMuteSwitchDetector shared];
CheckInViewController* sself = self;
self.detector.silentNotify = ^(BOOL silent)
{
[sself.silentSwitch setOn:silent animated:YES];
};
}
It works fine in iOS 6 and below but in iOS 7 it always gives TRUE value. So, Please any one tell, how to resolve this issue.
Thanks in advance.

Answer 1

It doesn't work in iOS 7, and it never really worked in iOS 6 if you look at why it doesn't work in iOS 7. This solution is based on the same code, so all credit to the original author though.
Keep mute.caf from your SharkfoodMuteSwitchDetector.
Create a new class, called HASilentSwitchDetector (or whatever), or replace the code in SharkfoodMuteSwitchDetector.
In the header file:
#import <AudioToolbox/AudioToolbox.h>
typedef void(^HASilentSwitchDetectorBlock)(BOOL success, BOOL silent);
#interface HASilentSwitchDetector : NSObject
+ (void)ifMute:(HASilentSwitchDetectorBlock)then;
#end
In the implementation file:
#import "HASilentSwitchDetector.h"
void MuteSoundPlaybackComplete(SystemSoundID ssID, void *clientData)
{
//Completion
NSDictionary *soundCompletion = CFBridgingRelease(clientData);
//Mute
NSTimeInterval interval = [soundCompletion[#"interval"] doubleValue];
NSTimeInterval elapsed = [NSDate timeIntervalSinceReferenceDate] - interval;
BOOL isMute = elapsed < 0.2; // mute.caf is .2s long...
//Then
HASilentSwitchDetectorBlock then = soundCompletion[#"then"];
then(YES, isMute);
//Cleanup
SystemSoundID soundID = [soundCompletion[#"soundID"] integerValue];
AudioServicesRemoveSystemSoundCompletion(soundID);
AudioServicesDisposeSystemSoundID(soundID);
}
#implementation HASilentSwitchDetector
+ (void)ifMute:(HASilentSwitchDetectorBlock)then
{
//Check
if ( !then ) {
return;
}
//Create
NSURL *url = [[NSBundle mainBundle] URLForResource:#"mute" withExtension:#"caf"];
SystemSoundID soundID;
if ( AudioServicesCreateSystemSoundID((__bridge CFURLRef)url, &soundID) == kAudioServicesNoError ) {
//UI Sound
UInt32 yes = 1;
AudioServicesSetProperty(kAudioServicesPropertyIsUISound, sizeof(soundID), &soundID,sizeof(yes), &yes);
//Callback
NSDictionary *soundCompletion = #{#"then" : [then copy], #"soundID" : #(soundID), #"interval" : #([NSDate timeIntervalSinceReferenceDate])};
AudioServicesAddSystemSoundCompletion(soundID, CFRunLoopGetMain(), kCFRunLoopDefaultMode, MuteSoundPlaybackComplete, (void *)CFBridgingRetain(soundCompletion));
//Play
AudioServicesPlaySystemSound(soundID);
} else {
//Fail
then(NO, NO);
}
}
#end
Use like so:
[HASilentSwitchDetector ifMute:^(BOOL success, BOOL silent) {
if ( success ) {
if ( ![[NSUserDefaults standardUserDefaults] boolForKey:forKey:kHasShownMuteWarning] && silent ) {
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:kHasShownMuteWarning];
[[[UIAlertView alloc] initWithTitle:[#"Mute Warning" localized] message:[NSString stringWithFormat:[#"This %#'s mute switch is on. To ensure your alarm will be audible, unmute your device." localized], [[[UIDevice currentDevice] isiPad]? #"iPad" : #"iPhone" localized]] delegate:nil cancelButtonTitle:nil otherButtonTitles:[#"Ok" localized], nil] show];
}
}
}];