package com.test.mediarecorder;

import java.io.File;

import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener {

private Button start, stop;  
private MediaRecorder recorder;  
private File soundFile;  
protected void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);  
    setContentView(R.layout.main);  
    start = (Button) findViewById(R.id.start);  
    stop = (Button) findViewById(R.id.stop);

    start.setOnClickListener(this);  
    stop.setOnClickListener(this);  
    recorder = new MediaRecorder();  
    System.out.println(Environment.getExternalStorageDirectory());  
}

@Override  
public void onClick(View v) {

  try {

      switch (v.getId()) {  
    case R.id.start:  
        if (!Environment.getExternalStorageState().equals(Environment.MEDIA\_MOUNTED)) {  
            Toast.makeText(this, "SD not exists", Toast.LENGTH\_LONG).show();  
            return;  
        }  
        // create file to save sound  
        soundFile = new File(Environment.getExternalStorageDirectory().getCanonicalFile() + "/sound.amr");  
        // set the sound source  
        recorder.setAudioSource(MediaRecorder.AudioSource.MIC);  
        // set the sound output type it must before set sound encoding  
        recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE\_GPP);  
        //set sound encoding  
        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR\_NB);  
        recorder.setOutputFile(soundFile.getAbsolutePath());  
        recorder.prepare();  
        // start record sound  
        recorder.start();  
        break;  
    case R.id.stop:  
        if (soundFile != null && soundFile.exists()) {  
            // stop record  
            recorder.stop();  
            recorder.release();  
            recorder = null;  
        }  
        break;  
    }  
  }catch (Exception e) {  
      e.printStackTrace();  
  }

}

}