IOS後臺播放音樂

• IOS

http://www.apple.com.cn/developer/iphone/library/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/AudioandVideoTechnologies/AudioandVideoTechnologies.html#//apple_ref/doc/uid/TP40007072-CH19-SW32

1.首先在工程中導入播放音樂所使用的框架：AV Foundation框架

2.在項目中添加代碼：

導入框架頭文件：

1. #import <AVFoundation/AVFoundation.h>

定義播放器變量：

1. AVAudioPlayer *player;
2. @property (strong, nonatomic) AVAudioPlayer *player;

自定義播放方法：

1. -(void)playSound{
2. [[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: nil];
3. [[AVAudioSession sharedInstance] setActive: YES error: nil];
5. NSString *soundFilePath =
6. [[NSBundle mainBundle] pathForResource: @"sound" ofType: @"mp3"];
8. NSURL *fileURL = [[NSURL alloc] initFileURLWithPath: soundFilePath];
10. self.player = [[AVAudioPlayer alloc] initWithContentsOfURL: fileURL error: nil];
11. [fileURL release];
13. [player play];
14. [player setDelegate: self];
15. }

按Home鍵暫停播放（AppDelegate.m）：

1. - (void)applicationDidEnterBackground:(UIApplication *)application
2. {
3. if (self.player.playing) {
4. [self.player pause];
5. }
6. }

運行軟件繼續播放（AppDelegate.m）：

1. - (void)applicationWillEnterForeground:(UIApplication *)application
2. {
3. if(self.player.playing == NO){
4. [self.player play];
5. }
6. }

1. 模擬器可以測試！

IOS後臺播放音樂