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小編給大家分享一下iOS如何實(shí)現(xiàn)鎖屏頁(yè)面控制音樂(lè)播放,希望大家閱讀完這篇文章之后都有所收獲,下面讓我們一起去探討吧!
本文實(shí)例為大家分享了iOS鎖屏頁(yè)面控制音樂(lè)播放的具體代碼,供大家參考,具體內(nèi)容如下
//1、調(diào)整音頻會(huì)話設(shè)置,確保應(yīng)用進(jìn)入后臺(tái)或靜音開(kāi)關(guān)已開(kāi)啟時(shí)音頻仍將繼續(xù)播放 //2、鎖屏狀態(tài)下顯示媒體信息 //3、鎖屏上的空間可以控制音頻播放 #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:@"在后臺(tái)播放音頻" 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 //開(kāi)始寫(xiě)代碼,調(diào)整音頻會(huì)話設(shè)置,確保即便應(yīng)用進(jìn)入后臺(tái)或靜音開(kāi)關(guān)已開(kāi)啟,音頻仍將繼續(xù)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:@"正在播放音樂(lè)" 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:@"停止播放后臺(tái)音樂(lè)" forState:UIControlStateNormal]; //No.2 //開(kāi)始寫(xiě)代碼,將媒體信息顯示在鎖定屏幕上,并使鎖屏上控件可以控制音頻播放 [[UIApplication sharedApplication] beginReceivingRemoteControlEvents]; //end_code } } //No.3 //開(kāi)始寫(xiě)代碼,響應(yīng)遠(yuǎn)程控制,使得進(jìn)入鎖屏狀態(tài)后可以控制音樂(lè)“播放”和“暫?!? - (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(@"沒(méi)有處理過(guò)這個(gè)事件------receivedEvent.subtype==%ld",(long)receivedEvent.subtype); break; } } } //end_code - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; } @end
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