如何以编程方式在iPhone上播放MP3？

I'd like to include an MP3 with my app and play it on demand. Unfortunately I am not sure how to get started. I keep reading about .caf files, but I am not sure what those are.

我想在我的应用程序中加入一个MP3并按需播放。不幸的是,我不知道如何开始。我一直在阅读.caf文件,但我不确定它们是什么。

I am looking for a step by step, if possible.

如果可能的话,我正在寻找一步一步。

4 个解决方案

#1

You could also try the AVAudioPlayer utility Framework.

您还可以尝试AVAudioPlayer实用程序框架。

#2

Here is what I am doing to play mp3 in xCode 4.2:

这是我在xCode 4.2中播放mp3的过程:

1) Import AVFoundation.framework framework into your project

1)将AVFoundation.framework框架导入您的项目

2) Adding: #import "AVFoundation/AVAudioPlayer.h" into your project ViewController.h file:

2)在项目ViewController.h文件中添加:#import“AVFoundation / AVAudioPlayer.h”:

#import <UIKit/UIKit.h>
#import "AVFoundation/AVAudioPlayer.h"

@interface ViewController : UIViewController

@end

3) Drag and drop your mp3 file yoursoundfile.mp3 into your root project explorer

3)将mp3文件yoursoundfile.mp3拖放到根项目资源管理器中

4) Modify -(void)viewDidLoadin ViewController.m:

4)修改 - (void)viewDidLoadin ViewController.m:

- (void)viewDidLoad{
    [super viewDidLoad];
    NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle]
                                         pathForResource:@"yoursoundfile"
                                         ofType:@"mp3"]];
    AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc]
                                  initWithContentsOfURL:url
                                  error:nil];
    [audioPlayer play];
}

As soon as you start your program, it will play the sound. You can customize to fit your app by changing volume, or when to play, stop...

一旦你启动你的程序,它将播放声音。您可以通过更改音量或何时播放,停止来自定义以适合您的应用...

#3

Use afconvert in Terminal to convert your MP3 to a .caf. man afconvert will tell you more.

在终端中使用afconvert将MP3转换为.caf。男人afconvert会告诉你更多。

Then

NSString *soundFilePath = [[NSBundle mainBundle] pathForResource: name ofType: @"caf"];

NSURL *fileURL = [[NSURL alloc] initFileURLWithPath: soundFilePath];

AVAudioPlayer *player = [super initWithContentsOfURL: fileURL error: nil];
[fileURL release];
[player play];

#4

Maybe look at: http://iphoneincubator.com/blog/audio-video/simple-way-to-play-mp3-audio-files and http://cocoawithlove.com/2008/09/streaming-and-playing-live-mp3-stream.html?

也许请看:http://iphoneincubator.com/blog/audio-video/simple-way-to-play-mp3-audio-files和http://cocoawithlove.com/2008/09/streaming-and-playing-现场的MP3 stream.html?

#1