Android Open Source - voice-journal Voice Journal Activity

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License

The source code is released under:

Copyright (c) 2014, Ravikiran Janardhana All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are...

Java Source Code

package com.android.voicejournal;
/*  w ww.ja va  2s  . c  o m*/
import java.io.IOException;

import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.util.TypedValue;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class VoiceJournalActivity extends Activity {
  private static final String LOG_TAG = "VoiceJournalActivity";
    private static String mFileName = null;

    private RecordButton mRecordButton = null;
    private MediaRecorder mRecorder = null;

    private PlayButton mPlayButton = null;
    private MediaPlayer mPlayer = null;

    private TextView mStatusText = null;
    private Button mUploadButton = null;

    private enum RECORDSTATE {
        START,
        STOPPED
    };

    private enum PLAYSTATE {
        START,
        STOPPED
    };

    public VoiceJournalActivity() {
        mFileName = Environment.getExternalStorageDirectory().getAbsolutePath();
        mFileName += "/audiorecordtest.m4a";
    }

  @Override
  protected void onCreate(Bundle savedInstanceState) 
  {
    super.onCreate(savedInstanceState);

    // Layout
    RelativeLayout rl = new RelativeLayout(this);
    // Layout Params
    RelativeLayout.LayoutParams rlParams = new RelativeLayout.LayoutParams(
        ViewGroup.LayoutParams.MATCH_PARENT,
      ViewGroup.LayoutParams.MATCH_PARENT
    );
    rl.setLayoutParams(rlParams);

    // Record button
    RelativeLayout.LayoutParams recordBtnParams = new RelativeLayout.LayoutParams(
        ViewGroup.LayoutParams.WRAP_CONTENT,
      ViewGroup.LayoutParams.WRAP_CONTENT
    );
        recordBtnParams.addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
        recordBtnParams.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
        recordBtnParams.topMargin = 100;
        mRecordButton = new RecordButton(this);
        Resources resources = getResources();
        mRecordButton.setBackground(resources.getDrawable(R.drawable.media_record_128));
        rl.addView(mRecordButton, recordBtnParams);

        // Play button
    RelativeLayout.LayoutParams playBtnParams = new RelativeLayout.LayoutParams(
        ViewGroup.LayoutParams.WRAP_CONTENT,
      ViewGroup.LayoutParams.WRAP_CONTENT
    );
    playBtnParams.addRule(RelativeLayout.BELOW, mRecordButton.getId());
        playBtnParams.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
        playBtnParams.topMargin = 450;
        mPlayButton = new PlayButton(this);
        mPlayButton.setBackground(resources.getDrawable(R.drawable.media_play_128));
        rl.addView(mPlayButton, playBtnParams);

        // Status text
    RelativeLayout.LayoutParams statusTextParams = new RelativeLayout.LayoutParams(
        ViewGroup.LayoutParams.WRAP_CONTENT,
      ViewGroup.LayoutParams.WRAP_CONTENT
    );
    statusTextParams.addRule(RelativeLayout.BELOW, mPlayButton.getId());
        statusTextParams.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
        statusTextParams.topMargin = 800;
        mStatusText = new TextView(this);
        mStatusText.setText("Idle");
        mStatusText.setTextSize(TypedValue.COMPLEX_UNIT_SP, (float)25);
        rl.addView(mStatusText, statusTextParams);

        // Upload Button
    RelativeLayout.LayoutParams uploadButtonParams = new RelativeLayout.LayoutParams(
        ViewGroup.LayoutParams.WRAP_CONTENT,
      ViewGroup.LayoutParams.WRAP_CONTENT
    );
    uploadButtonParams.addRule(RelativeLayout.BELOW, mStatusText.getId());
        uploadButtonParams.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
        uploadButtonParams.topMargin = 1000;
        mUploadButton = new Button(this);
        mUploadButton.setText("Upload to Google Drive");
        rl.addView(mUploadButton, uploadButtonParams);

        // Set Content View
        setContentView(rl);
  }

  @Override
    public void onPause() {
    super.onPause();
        if (mRecorder != null) {
            mRecorder.release();
            mRecorder = null;
        }

        if (mPlayer != null) {
            mPlayer.release();
            mPlayer = null;
        }
    }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) 
  {

    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.voice_journal, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) 
  {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) 
    {
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

    private void _startPlaying()
    {
      try
      {
        mPlayer = new MediaPlayer();
        mPlayer.setDataSource(mFileName);
        mPlayer.prepare();
        mPlayer.start();
      }
      catch (IOException e)
      {
        Log.e(LOG_TAG, "Failed to start playing", e);
      }
    }

    private void _stopPlaying()
    {
      mPlayer.release();
      mPlayer = null;
    }

    private void _startRecording()
    {
      try
      {
        mRecorder = new MediaRecorder();
            mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
            mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
            mRecorder.setOutputFile(mFileName);
            mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
        mRecorder.prepare();
        mRecorder.start();
      }
      catch (IOException e)
      {
        Log.e(LOG_TAG, "Failed to start recording", e);
      }
    }

    private void _stopRecording()
    {
      mRecorder.stop();
      mRecorder.release();
      mRecorder = null;
    }

  class RecordButton extends Button
  {
    RECORDSTATE currState = RECORDSTATE.STOPPED;
    OnClickListener recordClickListener = new OnClickListener() {
      
      @Override
      public void onClick(View v) {
        if (currState == RECORDSTATE.STOPPED)
        {
          _startRecording();
          mStatusText.setText("Recording started");
          currState = RECORDSTATE.START;
        }
        else
        {
          _stopRecording();
          mStatusText.setText("Recording stopped");
          currState = RECORDSTATE.STOPPED;
        }
      }
    };
    public RecordButton(Context context) {
      super(context);
      setOnClickListener(recordClickListener);
    }
  }

  class PlayButton extends Button
  {

    PLAYSTATE currState = PLAYSTATE.STOPPED;
    OnClickListener playClickListener = new OnClickListener() {
      
      @Override
      public void onClick(View v) {
        if (currState == PLAYSTATE.STOPPED)
        {
          _startPlaying();
          mStatusText.setText("Play started");
          currState = PLAYSTATE.START;
        }
        else
        {
          _stopPlaying();
          mStatusText.setText("Play stopped");
          currState = PLAYSTATE.STOPPED;
        }
      }
    };
    public PlayButton(Context context) {
      super(context);
      setOnClickListener(playClickListener);
    }
  }
}

Java Source Code List

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