错误记录并在android中播放音频

我一直在尝试在Android中录制和播放录制的音频 . 我已经使用了MediaRecorder和MediaPlayer类 .

我的代码包含3个段：startrecording（）stoprecording（）playaudio

但是我的代码片段中存在错误，每当我执行它时，startrecording（）函数都会实现catch块 .

package hare.krishna;

import android.app.Activity;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.*;


public class Recordplay2Activity extends Activity 
{    
    Button play1,record1,stop1;
    TextView status1;
    MediaRecorder m1=null;
    MediaPlayer m2=null;
    String path;

    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        play1=(Button)findViewById(R.id.play);
        record1=(Button)findViewById(R.id.record);
        stop1=(Button)findViewById(R.id.stop);
        status1=(TextView)findViewById(R.id.status);

        OnClickListener recordListener = new OnClickListener()
        {
            public void onClick(View v)
            {
                startrecording();
            }
        };

        OnClickListener stopListener = new OnClickListener()
        {
            public void onClick(View v)
            {
                stoprecording();
            }
        };

        OnClickListener playListener = new OnClickListener()
        {
            public void onClick(View v)
            {
                playaudio();
            }
        };

        record1.setOnClickListener(recordListener);
        stop1.setOnClickListener(stopListener); 
        play1.setOnClickListener(playListener);    

    }


    public void startrecording() 
    {       
        status1.setText("GET READY FOR RECORDING");
        try
        {       
        m1=new MediaRecorder();
        m1.setAudioSource(MediaRecorder.AudioSource.MIC);
        m1.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
        m1.setOutputFile(path);
        m1.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

        m1.prepare();
        m1.start();
        }
        catch(Exception e)
        {
            status1.setText("ERROR IN startrecording FUNCTION ");
        }
    }

    public void stoprecording()
    {
        try
        {
        status1.setText("TIME TO STOP MEDIA");
        m1.stop();
        m1.reset();
        m1.release();
        }
        catch(Exception e)
        {
            status1.setText("ERROR IN stoprecording FUNCTION");
        }
    }

    public void playaudio()
    {
        status1.setText("PLAYING RECORDER AUDIO");
        try
        {
            m2=new MediaPlayer();
            m2.setDataSource("/sdcard/output.3gp");
            m2.prepare();
            m2.start();

        }
        catch(Exception e)
        {
            System.out.println("ERROR in playaudio FUNCTION");

        }
    }



}