优化息屏播放

DreamSleep/DreamSleep/Class/HomeModule/Course/Controller/MusicPlayerController.m

@@ -11,6 +11,7 @@
 #import "SubAudioModel.h"
 #import "CourseDetailController.h"
 #import <MediaPlayer/MediaPlayer.h>
+#import <AVFoundation/AVFoundation.h>
 
 @interface MusicPlayerController () <MusicPlayerViewDelegate, CourseDetailControllerDelegate>
 @property (nonatomic, strong) MusicPlayerView *playerView;
@@ -110,6 +111,7 @@
     
     [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationWillResignActiveNotification object:nil];
     [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidBecomeActiveNotification object:nil];
+    [[NSNotificationCenter defaultCenter] removeObserver:self name:AVAudioSessionInterruptionNotification object:nil];
     
     [[UIApplication sharedApplication] endReceivingRemoteControlEvents];
     MPRemoteCommandCenter *center = [MPRemoteCommandCenter sharedCommandCenter];
@@ -125,6 +127,11 @@
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playerWillResignActive) name:UIApplicationWillResignActiveNotification object:nil];
     // 已经进入前台
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playerDidEnterForeground) name:UIApplicationDidBecomeActiveNotification object:nil];
+    // 监听播放器被打断（别的软件播放音乐，来电话）
+    [[NSNotificationCenter defaultCenter] addObserver:self
+                                             selector:@selector(playerAudioBeInterrupted:)
+                                                 name:AVAudioSessionInterruptionNotification
+                                               object:[AVAudioSession sharedInstance]];
 }
 
 - (void)playerWillResignActive {
@@ -135,6 +142,17 @@
     _isBackground = NO;
 }
 
+- (void)playerAudioBeInterrupted:(NSNotification *)notification {
+    NSDictionary *userInfo = notification.userInfo;
+    if ([userInfo[AVAudioSessionInterruptionTypeKey] integerValue] == 1) { // 打断开始
+        [self pause];
+    } else { // 打断结束
+        if ([userInfo[AVAudioSessionInterruptionOptionKey] unsignedIntegerValue] == 1) {
+            [self play];
+        }
+    }
+}
+
 #pragma mark - 息屏播放（通知栏、锁屏界面）
 - (void)addPlayingCenterInfo {
     _remoteInfoDictionary = [NSMutableDictionary dictionary];
@@ -154,7 +172,7 @@
 }
 
 - (void)updatePlayingCenterInfo {
-    if (!_isBackground) {return;}
+    if (!_isBackground) { return; }
     _remoteInfoDictionary[MPNowPlayingInfoPropertyElapsedPlaybackTime] = [NSNumber numberWithDouble:self.audioStream.currentTimePlayed.playbackTimeInSeconds];
     _remoteInfoDictionary[MPMediaItemPropertyPlaybackDuration] = [NSNumber numberWithDouble:self.audioStream.duration.playbackTimeInSeconds];
     [MPNowPlayingInfoCenter defaultCenter].nowPlayingInfo = _remoteInfoDictionary;