android - 简单的媒体播放器从文件路径播放 mp3？

Question

我有一个非常简单的播放背景的媒体播放器。它从 apk 调用文件，但我希望它从任何目录播放，如音乐或 sdcard。

这是我的代码：

private MediaPlayer mpintro;

.
.

mpintro = MediaPlayer.create(this, R.raw.intro);
        mpintro.setLooping(true);
        mpintro.start();

Answer 1

它是这样工作的：

mpintro = MediaPlayer.create(this, Uri.parse(Environment.getExternalStorageDirectory().getPath()+ "/Music/intro.mp3"));
mpintro.setLooping(true);
        mpintro.start();

它不能作为字符串文件路径正常工作......

Answer 2

String filePath = Environment.getExternalStorageDirectory()+"/yourfolderNAme/yopurfile.mp3";
mediaPlayer = new  MediaPlayer();
mediaPlayer.setDataSource(filePath);
mediaPlayer.prepare();   
mediaPlayer.start()

这个从原始文件夹播放。

int resID = myContext.getResources().getIdentifier(playSoundName,"raw",myContext.getPackageName());

            MediaPlayer mediaPlayer = MediaPlayer.create(myContext,resID);
            mediaPlayer.prepare();
            mediaPlayer.start();

mycontext=application.this。利用。

Answer 3

这是设置一个MediaPlayer播放 SD 卡的代码：

String PATH_TO_FILE = "/sdcard/music.mp3";    
mediaPlayer = new  MediaPlayer();
mediaPlayer.setDataSource(PATH_TO_FILE);
mediaPlayer.prepare();   
mediaPlayer.start()

您可以在此处查看完整示例。如果您有任何问题，请告诉我。

Answer 4

使用下面的代码对我有用。

MediaPlayer mp = new MediaPlayer();
mp.setDataSource("/mnt/sdcard/yourdirectory/youraudiofile.mp3");
mp.prepare();
mp.start();

Answer 5

我将此类用于音频播放。如果您的音频位置是原始 文件夹。

播放调用方法：

new AudioPlayer().play(mContext, getResources().getIdentifier(alphabetItemList.get(mPosition)
                        .getDetail().get(0).getAudio(),"raw", getPackageName()));

AudioPlayer.java 类：

public class AudioPlayer {

    private MediaPlayer mMediaPlayer;

    public void stop() {
        if (mMediaPlayer != null) {
            mMediaPlayer.release();
            mMediaPlayer = null;
        }
    }
    // mothod for raw folder (R.raw.fileName)
    public void play(Context context, int rid){
        stop();

        mMediaPlayer = MediaPlayer.create(context, rid);
        mMediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mediaPlayer) {
                stop();
            }
        });

        mMediaPlayer.start();
    }

    // mothod for other folder 
    public void play(Context context, String name) {
        stop();

        //mMediaPlayer = MediaPlayer.create(c, rid);
        mMediaPlayer = MediaPlayer.create(context, Uri.parse("android.resource://"+ context.getPackageName()+"/your_file/"+name+".mp3"));
        mMediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mediaPlayer) {
                stop();
            }
        });

        mMediaPlayer.start();
    }

}

Answer 6

在科特林：

1）该文件位于资源文件夹中：

var nowLesson =resources.getIdentifier("test.mp3", "raw", packageName)
             
mediaPlayer = MediaPlayer.create(applicationContext, nowLesson)
    
mediaPlayer.start()

2）文件在一个Path（文件路径）中

val file = File(
        this.getDir("Music", MODE_PRIVATE),
        "/t.mp3"
    )
mediaPlayer = MediaPlayer.create(this,Uri.fromFile(file ))
                mediaPlayer.start()

Answer 7

2020 - 十一月

这对我有用：

final File file = new File(getFilesDir(), "test.wav");//OR path to existing file
mediaPlayer = MediaPlayer.create(getApplicationContext(), Uri.fromFile(file));
mediaPlayer.start();