iPhone背景音乐播放器

Posted 2023-03-08

【中文标题】iPhone背景音乐播放器

【英文标题】：iPhone background music player

【发布时间】：2013-04-25 19:51:23

【问题描述】：

任何人都可以指导我学习教程，或者向我展示播放背景音乐的实际代码。我需要它能够启动和停止。这不是一个任务，所以你知道。我的任务已经完成了，我只想给它添加音乐，我不知道怎么做。谢谢！

【参考方案1】：

您可以使用 AVAudioPlayer

//You have to import AvFoundation to use AVAudioPlayer
#import <AVFoundation/AVFoundation.h>

-(void) playMusicFile:(NSString *) songName
   
    NSString *musicFile = [[NSBundle mainBundle] pathForResource:songName ofType:@"mp3"];

    NSError *soundError = nil;
    self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:musicFile] error:&soundError];
    if(self.audioPlayer == nil)
    
        NSLog(@"%@",soundError);
    
    else
    
        //Delegation is optional but it helps you do stuff after song finished playing etc
        [self.audioPlayer setDelegate:self];
        //Set number of repeats, 0 is default plays once, negative values makes it play infinitely
        [self.audioPlayer setNumberOfLoops:0];
        //Prepare to play is not always necessary, but otherwise it can take time to play
        [self.audioPlayer prepareToPlay];
        [self.audioPlayer play];
    


//This is the delegate called after the song finished playing, you can use it to play other songs, or do other stuff
-(void) audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag

    ...

停止和暂停：

//You can easily stop and pause using: 
[self.audioPlayer stop]; //Stop doesn't work as you would expect. It doesn't set the current time to 0 but only undoes the setup you had with the audioplayer.
[self.audioPlayer pause];

//It is possible to call [self.audioPlayer play] after each method and playback will continue from where it left off.

欲了解更多信息，请访问参考：http://developer.apple.com/library/ios/#DOCUMENTATION/AVFoundation/Reference/AVAudioPlayerClassReference/Reference/Reference.html

【讨论】：

太棒了，非常感谢。我看到你的文件类型为@“mp3”，但我应该把我拥有的歌曲的实际名称放在哪里，比如@“背景音乐”？

我分享了一个playMusicFile函数，如果你想播放backgroundmusic.mp3，可以这样调用：[self playMusicFile:@"backgroundmusic"]。

【参考方案2】：

AVPlayer 和 AVAudioPlayer 应该可以工作。