我要播放存储在我的SD卡位置的3GP音频文件，在我的HTC设备符合我的默认媒体播放器播放它。

请帮助

code：

 公共类AudioRecorder延伸活动{     私有静态最后弦乐CAMERA_STATUS =camera_upload;        私有静态最后弦乐GALLERY_STATUS =gallery_upload;        MediaRecorder记录=新MediaRecorder（）;        静态字符串路径=音频android.3gp        按钮的startRecording;        按钮STO precording;        按钮来保存;        按钮palyAudio;        私人上下文的背景下;     私人字符串sanitizePath（字符串路径）{        如果（！path.startsWith（/））{            路径=/+路径;        }        如果（！path.contains（。））{            路径+ =名为.3gp;        }        返回Environment.getExternalStorageDirectory（）。getAbsolutePath（）            +路径;        }     @覆盖        保护无效的onCreate（捆绑savedInstanceState）{        // TODO自动生成方法存根        super.onCreate（savedInstanceState）;        的setContentView（R.layout.audio_recording）;        上下文=这一点;        / **         *创建在给定的路径中的新录音（相对于根         * SD卡）。         * /        this.path = sanitizePath（路径）;        的startRecording =（按钮）findViewById（R.id.startRecording）;        STO precording =（按钮）findViewById（R.id.sto precording）;        节省=（按钮）findViewById（R.id.resetRecording）;        palyAudio =（按钮）findViewById（R.id.playRecorded）;startRecording.setOnClickListener（新OnClickListener（）{            @覆盖            公共无效的onClick（查看为arg0）{            尝试{                STO precording.setVisibility（View.VISIBLE）;                startRecording.setVisibility（View.GONE）;                开始（）;            }赶上（IOException异常五）{                e.printStackTrace（）;            }            }        }）;        STO precording.setOnClickListener（新OnClickListener（）{            @覆盖            公共无效的onClick（查看为arg0）{            STO precording.setVisibility（View.GONE）;            startRecording.setVisibility（View.VISIBLE）;            尝试{                            停止（）;            }赶上（IOException异常五）{                // TODO自动生成catch块                e.printStackTrace（）;            }            }        }）;        palyAudio.setOnClickListener（新OnClickListener（）{            @覆盖            公共无效的onClick（查看为arg0）{             playAudio（）;             // startMediaPlayer（）;            }        }）;        }        / **         *         *播放录制的音频         *         * /        公共无效playAudio（）{        尝试{            意向意图=新意图（android.content.Intent.ACTION_VIEW）;            乌里数据= Uri.parse（路径）;           //意向意图=新意图（Intent.ACTION_VIEW，数据）;            intent.setDataAndType（数据，音频/ MP3）;            startActivity（意向）;        }赶上（ActivityNotFoundException E）{            e.printStackTrace（）;        }赶上（例外五）{            // TODO：处理异常        }        }      / **         *开始一个新的记录。         * /        公共无效的start（）抛出IOException        记录=新MediaRecorder（）;        字符串状态= android.os.Environment.getExternalStorageState（）;        如果（！state.equals（android.os.Environment.MEDIA_MOUNTED））{            抛出新IOException异常（SD卡未安装，这是+状态                +。）;        }        //确保目录，我们计划存储在记录存在        文件目录=新的文件（路径）.getParentFile（）;        的System.out.println（开始（）目录＆gt;中+目录）;        如果（directory.exists（）及！＆放大器;！directory.mkdirs（））{            抛出新IOException异常（路径文件无法被创建。）;        }        recorder.setAudioSource（MediaRecorder.AudioSource.MIC）; recorder.setOutputFormat（MediaRecorder.OutputFormat.THREE_GPP）;        recorder.setAudioEn codeR（MediaRecorder.AudioEn coder.AMR_NB）; recorder.setOutputFile（路径）;        。录音机prepare（）;        recorder.start（）;        }        / **         *停止了已经previously开始录音。         * /        公共无效停止（）抛出IOException        recorder.stop（）; //停止录制。        recorder.release（）; //现在对象不能重复使用        }    } 

解决方案

 公共无效的onCreate（捆绑冰柱）{        super.onCreate（冰柱）;        的setContentView（T）;        PATH =/sdcard/sample.mp3;                    mMediaPlayer =新的MediaPlayer（）;                    mMediaPlayer.setDataSource（路径）;                    mMediaPlayer prepare（）。                    mMediaPlayer.start（）;    } 

I need to play an 3gp audio file stored in my sd card location, to play it with my default media player in My HTC device..

Pls help

Code :

 public class AudioRecorder extends Activity {

     private static final String CAMERA_STATUS = "camera_upload";
        private static final String GALLERY_STATUS = "gallery_upload";
        MediaRecorder recorder = new MediaRecorder();
        static String path = "audio-android.3gp";
        Button startRecording;
        Button stopRecording;
        Button save;
        Button palyAudio;
        private Context context;


     private String sanitizePath(String path) {
        if (!path.startsWith("/")) {
            path = "/" + path;
        }
        if (!path.contains(".")) {
            path += ".3gp";
        }
        return Environment.getExternalStorageDirectory().getAbsolutePath()
            + path;
        }



     @Override
        protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);

        setContentView(R.layout.audio_recording);
        context = this;
        /**
         * Creates a new audio recording at the given path (relative to root of
         * SD card).
         */

        this.path = sanitizePath(path);

        startRecording = (Button) findViewById(R.id.startRecording);
        stopRecording = (Button) findViewById(R.id.stopRecording);
        save = (Button) findViewById(R.id.resetRecording);
        palyAudio = (Button) findViewById(R.id.playRecorded);

startRecording.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
            try {
                stopRecording.setVisibility(View.VISIBLE);
                startRecording.setVisibility(View.GONE);
                start();

            } catch (IOException e) {
                e.printStackTrace();
            }

            }
        });

        stopRecording.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
            stopRecording.setVisibility(View.GONE);
            startRecording.setVisibility(View.VISIBLE);
            try {
                            stop();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

            }
        });


        palyAudio.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
             playAudio();
             //startMediaPlayer();

            }

        });

        }

        /**
         * 
         * play the recorded audio
         * 
         */
        public void playAudio() {
        try {

            Intent intent = new Intent(android.content.Intent.ACTION_VIEW);
            Uri data = Uri.parse(path);
           // Intent intent = new Intent(Intent.ACTION_VIEW, data);  
            intent.setDataAndType(data, "audio/mp3");
            startActivity(intent);
        } catch (ActivityNotFoundException e) {
            e.printStackTrace();
        } catch (Exception e) {
            // TODO: handle exception
        }
        }


      /**
         * Starts a new recording.
         */
        public void start() throws IOException {
        recorder = new MediaRecorder();

        String state = android.os.Environment.getExternalStorageState();

        if (!state.equals(android.os.Environment.MEDIA_MOUNTED)) {
            throw new IOException("SD Card is not mounted.  It is " + state
                + ".");
        }

        // make sure the directory we plan to store the recording in exists
        File directory = new File(path).getParentFile();
        System.out.println("start() directory >  " + directory);
        if (!directory.exists() && !directory.mkdirs()) {
            throw new IOException("Path to file could not be created.");
        }

        recorder.setAudioSource(MediaRecorder.AudioSource.MIC);                 recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); 
        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);    recorder.setOutputFile(path); 
        recorder.prepare();               
        recorder.start(); 

        }

        /**
         * Stops a recording that has been previously started.
         */
        public void stop() throws IOException {
        recorder.stop(); // Stops recording.
        recorder.release(); // Now the object cannot be reused

        }


    }

public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(t);
        path = "/sdcard/sample.mp3";
                    mMediaPlayer = new MediaPlayer();
                    mMediaPlayer.setDataSource(path);
                    mMediaPlayer.prepare();
                    mMediaPlayer.start();
    }