Custom Audio Recorder

   
package app.test;

import java.io.File;
import java.io.IOException;

import android.app.Activity;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class Test extends Activity implements OnClickListener,
    OnCompletionListener {

  TextView statusTextView;

  Button startRecording, stopRecording, playRecording, finishButton;

  MediaRecorder recorder;
  MediaPlayer player;

  File audioFile;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    statusTextView = (TextView) this.findViewById(R.id.StatusTextView);
    statusTextView.setText("Ready");

    stopRecording = (Button) this.findViewById(R.id.StopRecording);
    startRecording = (Button) this.findViewById(R.id.StartRecording);
    playRecording = (Button) this.findViewById(R.id.PlayRecording);
    finishButton = (Button) this.findViewById(R.id.FinishButton);

    startRecording.setOnClickListener(this);
    stopRecording.setOnClickListener(this);
    playRecording.setOnClickListener(this);
    finishButton.setOnClickListener(this);

    stopRecording.setEnabled(false);
    playRecording.setEnabled(false);
  }

  public void onClick(View v) {
    if (v == finishButton) {
      finish();
    } else if (v == stopRecording) {
      recorder.stop();
      recorder.release();
      player = new MediaPlayer();
      player.setOnCompletionListener(this);
      try {
        player.setDataSource(audioFile.getAbsolutePath());
        player.prepare();
      } catch (Exception e) {
        throw new RuntimeException(
            "Exception in MediaPlayer.prepare", e);
      }

      statusTextView.setText("Ready to Play");

      playRecording.setEnabled(true);
      stopRecording.setEnabled(false);
      startRecording.setEnabled(true);
    } else if (v == startRecording) {
      recorder = new MediaRecorder();
      recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
      recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
      recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

      File path = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+ "/files/");
      path.mkdirs();

      try {
        audioFile = File.createTempFile("recording", ".3gp", path);
      recorder.setOutputFile(audioFile.getAbsolutePath());
      } catch (Exception e) {
        throw new RuntimeException(
            "Exception on MediaRecorder.prepare", e);
      }
      recorder.start();
      statusTextView.setText("Recording");
      playRecording.setEnabled(false);
      stopRecording.setEnabled(true);
      startRecording.setEnabled(false);
    } else if (v == playRecording) {
      player.start();
      statusTextView.setText("Playing");
      playRecording.setEnabled(false);
      stopRecording.setEnabled(false);
      startRecording.setEnabled(false);
    }
  }

  public void onCompletion(MediaPlayer mp) {
    playRecording.setEnabled(true);
    stopRecording.setEnabled(false);
    startRecording.setEnabled(true);
    statusTextView.setText("Ready");
  }
}

//main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/StatusTextView" android:text="Status" android:textSize="35dip"></TextView>

    <Button android:text="Start Recording" android:id="@+id/StartRecording" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
    <Button android:text="Stop Recording" android:id="@+id/StopRecording" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
    <Button android:text="Play Recording" android:id="@+id/PlayRecording" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
    <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/FinishButton" android:text="Finish"></Button>
</LinearLayout>
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Custom Audio Recorder : Audio « Media « Android

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