How can we handle headphone play/pause button events in foreground in ios

Question

I have an requirement that to handle headphone play/pause button events in foreground. How ever I am able to handle the same scenario in background using the below code

if ([[UIApplication sharedApplication] respondsToSelector:@selector(beginReceivingRemoteControlEvents)]){
    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
    [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:NULL];
    [self becomeFirstResponder];
    NSLog(@"Responds!");
}

Please help with an explanation or sample code if possible. I have done lots of research but no help.

score 13 · Answer 1 · answered Jul 27 '15 at 09:37

There is another way to implement player control from headphones. use MPRemoteCommandCenter tooglePlayPauseCommand. Apple documentation

[[MPRemoteCommandCenter sharedCommandCenter].togglePlayPauseCommand addTarget:self action:@selector(onTooglePlayPause)];

score 12 · Answer 2 · edited May 15 '15 at 03:09

You must check this criteria:

Edit your info.plist to stipulate that you do audio (UIBackgroundModes) in the background as well as foreground.

Implement this function:

- (void)remoteControlReceivedWithEvent:(UIEvent *)theEvent 
{
  if (theEvent.type == UIEventTypeRemoteControl)
  {
    switch(theEvent.subtype) {
    case UIEventSubtypeRemoteControlTogglePlayPause:
            //Insert code
            break;
        case UIEventSubtypeRemoteControlPlay:
            //Insert code
            break;
        case UIEventSubtypeRemoteControlPause:
            // Insert code
            break;
        case UIEventSubtypeRemoteControlStop:
            //Insert code.
            break;
        default:
            return;
    }
  }
}

...obviously, replace the "//insert code" with whatever functionality is relevent in your app.

3>Finally, in order for that above function to be called, insert this in your viewDidAppear event:

[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
    if ([self canBecomeFirstResponder]) {
        [self becomeFirstResponder];
    }

also please see this link: http://www.sagorin.org/2011/11/29/ios-playing-audio-in-background-audio/

thanks for your reply, however I am able to handle the events in background also I have added the UIBackgroundModes in plist but I have no idea about foreground events handling. I have tried trigging the mentioned method '- (void)remoteControlReceivedWithEvent:(UIEvent *)theEvent ' but no luck. Can you please explain me how can we add foreground keys in plist. — Santosh Gurram, Mar 15 '13 at 05:51
After 2 min, if press on headphone button, Music app started and play previous sound. — biloshkurskyi.ss, Mar 22 '16 at 15:22

score 4 · Answer 3 · answered Jun 17 '16 at 07:04

4

The swift 2 version for slobodans solution:

MPRemoteCommandCenter.sharedCommandCenter().togglePlayPauseCommand.addTarget(self, action: #selector(togglePlayStop(_:)));

answered Jun 17 '16 at 07:04

SteMa

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How can we handle headphone play/pause button events in foreground in ios

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