iOS Development: Headphone Wire control

Headphone Wire Control 1. Introducing

#import <AVFoundation/AVFoundation.h>

2. Turn on remote control events

  [[Avaudiosession sharedinstance] Setcategory:avaudiosessioncategoryplayback Error:nil];
    if (![ [Avaudiosession sharedinstance] Setactive:yes Error:nil]) {
        NSLog (@ "Failed to set up a session");
    }

    [[UIApplication sharedapplication] beginreceivingremotecontrolevents];

3. Call Remote Control method

-(void) Remotecontrolreceivedwithevent: (Uievent *) event {NSLog (@ "Event Type:%d, subtype:%d", Event.type, Event.subt

    YPE); if (Event.type = = Uieventtyperemotecontrol) {switch (event.subtype) {case Uieventsubtyperemotecontro
                Lplay:nslog (@ "Play");
            Break
                Case Uieventsubtyperemotecontrolpause:nslog (@ "paused");
            Break
                 Case Uieventsubtyperemotecontrolstop:nslog (@ "Stop");
            Break
                  Case Uieventsubtyperemotecontroltoggleplaypause:nslog (@ "suspend/stop");
            Break
                 Case Uieventsubtyperemotecontrolnexttrack:nslog (@ "next song");
            Break
                Case Uieventsubtyperemotecontrolprevioustrack:nslog (@ "last song");
            Break
                 Case Uieventsubtyperemotecontrolbeginseekingbackward:nslog (@ "Start back");
            Break CASE Uieventsubtyperemotecontrolendseekingbackward:nslog (@ "End back");
            Break
                Case Uieventsubtyperemotecontrolbeginseekingforward:nslog (@ "start ahead");
            Break
                Case Uieventsubtyperemotecontrolendseekingforward:nslog (@ "End forward");
            Break
        Default:break; }
    }

}