iOS实现锁屏页面控制音乐播放
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2023-11-22 13:03:04
本文实例为大家分享了ios锁屏页面控制音乐播放的具体代码,供大家参考,具体内容如下
//1、调整音频会话设置,确保应用进入后台或静音开关已开启时音频仍将继续播放
//2、...
本文实例为大家分享了ios锁屏页面控制音乐播放的具体代码,供大家参考,具体内容如下
//1、调整音频会话设置,确保应用进入后台或静音开关已开启时音频仍将继续播放 //2、锁屏状态下显示媒体信息 //3、锁屏上的空间可以控制音频播放 #import "viewcontroller.h" #import <avfoundation/avfoundation.h> #import <mediaplayer/mediaplayer.h> @interface viewcontroller () @property (nonatomic, strong) avaudioplayer *audioplayer; @property (weak, nonatomic) uibutton *playbutton; @end @implementation viewcontroller - (void)viewdidload { [super viewdidload]; uibutton * playbutton = [uibutton buttonwithtype:uibuttontypesystem]; playbutton.frame = cgrectmake(0, 0, 200, 40); playbutton.center = self.view.center; [playbutton settitle:@"在后台播放音频" forstate:uicontrolstatenormal]; [playbutton addtarget:self action:@selector(playmusicinbackground:) forcontrolevents:uicontroleventtouchupinside]; [self.view addsubview:playbutton]; nserror *playeriniterror = nil; nsstring *audiopath = [[nsbundle mainbundle] pathforresource:@"background_audio" oftype:@"mp3"]; nsurl *audiourl = [nsurl fileurlwithpath:audiopath]; self.audioplayer = [[avaudioplayer alloc] initwithcontentsofurl:audiourl error:&playeriniterror]; avaudiosession *session = [avaudiosession sharedinstance]; nserror *activeerror = nil; if (![session setactive:yes error:&activeerror]) { nslog(@"failed to set active audio session!"); } //no.1 //开始写代码,调整音频会话设置,确保即便应用进入后台或静音开关已开启,音频仍将继续播放 nserror *categoryerror = nil; [session setcategory:avaudiosessioncategoryplayback error:&categoryerror]; //end_code } - (void)playmusicinbackground:(id)sender { if ([self.audioplayer isplaying]) { [self.audioplayer stop]; [self.playbutton settitle:@"正在播放音乐" forstate:uicontrolstatenormal]; } else { uiimage *lockimage = [uiimage imagenamed:@"belongtome.jpg"]; mpmediaitemartwork *artwork = [[mpmediaitemartwork alloc] initwithimage:lockimage]; nsdictionary *mediadict = @{ mpmediaitempropertytitle: @"backgroundtask audio", mpmediaitempropertymediatype: @(mpmediatypeanyaudio), mpmediaitempropertyplaybackduration: @(self.audioplayer.duration), mpnowplayinginfopropertyplaybackrate: @1.0, mpnowplayinginfopropertyelapsedplaybacktime: @(self.audioplayer.currenttime), mpmediaitempropertyalbumartist: @"some user", mpmediaitempropertyartist: @"some user", mpmediaitempropertyartwork: artwork }; [self.audioplayer play]; [self.playbutton settitle:@"停止播放后台音乐" forstate:uicontrolstatenormal]; //no.2 //开始写代码,将媒体信息显示在锁定屏幕上,并使锁屏上控件可以控制音频播放 [[uiapplication sharedapplication] beginreceivingremotecontrolevents]; //end_code } } //no.3 //开始写代码,响应远程控制,使得进入锁屏状态后可以控制音乐“播放”和“暂停” - (void) remotecontrolreceivedwithevent: (uievent *) receivedevent { if (receivedevent.type == uieventtyperemotecontrol) { switch (receivedevent.subtype) { case uieventsubtyperemotecontrolplay: [self.audioplayer play]; break; case uieventsubtyperemotecontrolpause: [self.audioplayer pause]; break; default: nslog(@"没有处理过这个事件------receivedevent.subtype==%ld",(long)receivedevent.subtype); break; } } } //end_code - (void)didreceivememorywarning { [super didreceivememorywarning]; } @end
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