Android Open Source - Handalfabet Sound Settings Activity

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License

The source code is released under:
GNU General Public License
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Java Source Code

package com.SwedishSignAlphabet;
//w w w  . jav  a2  s .c  o  m
import com.SwedishSignAlphabet.R;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;

/**
 *    Copyright? 2012, Grupp02
 * 
 *     This file is part of Handalfabetet.
 *
 *   Handalfabetet is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   Handalfabetet is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with Handalfabetet.  If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * The SoundSettingActivity class is the activity where sound settings and
 * vibration settings may be altered.
 * 
 * @author : Grupp02
 * @version : 2012-10-19, v1.0
 * 
 */
public class SoundSettingsActivity extends Activity implements
  SeekBar.OnSeekBarChangeListener {

    // Audio Focus helper
    private AudioFocusHelper focusHelper;

    // SoundSettings database
    private SoundSettings soundData;
    private DatabaseHelper db;

    private Bitmap img;
    private ImageView userImg;
    private TextView userName;
    private TextView userStatus;
    private SeekBar volumeBar;
    private ToggleButton soundButton;
    private ToggleButton vibrationButton;

    private int soundVolume = 100;
    private final static int MAX_VOLUME = 100;

    private final int zero = 0;
    private final int one = 1;

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

  // Make sure we're running on Honeycomb or higher to use ActionBar APIs
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
      // getActionBar().setDisplayHomeAsUpEnabled( true );
  }

  if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) {
      focusHelper = new AudioFocusHelper(this);
  } else {
      focusHelper = null;
  }

  soundData = new SoundSettings(this);
  db = new DatabaseHelper(this);

  // User Image
  userImg = (ImageView) findViewById(R.id.userpic);
  img = (Bitmap) (getIntent().getExtras().getParcelable("userImg"));
  userImg.setImageBitmap(img);

  userStatus = (TextView) findViewById(R.id.textView1);
  userStatus.setText(getIntent().getStringExtra("User"));
  // Displays the username
  userName = (TextView) findViewById(R.id.textView2);
  userName.setText(getIntent().getStringExtra("Name"));

  // Activate the volume bar
  volumeBar = (SeekBar) findViewById(R.id.volume_bar);
  volumeBar.setOnSeekBarChangeListener(this);

  soundButton = (ToggleButton) findViewById(R.id.sound_toggle_button);
  vibrationButton = (ToggleButton) findViewById(R.id.vibration_toggle_button);

  if (savedInstanceState == null) {
      volumeBar.setProgress(soundVolume);
      soundButton.setChecked(true);
      vibrationButton.setChecked(true);
  }

  getSettings();

  soundButton.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v) {
    float volume = (float) (one - (Math.log(MAX_VOLUME
      - soundVolume) / Math.log(MAX_VOLUME)));
    playButton();
    if (soundButton.isChecked()) {
        SoundPlayer.setSoundEnabled(true);
        SoundPlayer.setVolume(volume, volume);
    } else {
        SoundPlayer.setSoundEnabled(false);
    }
      }
  });

  vibrationButton.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v) {
    playButton();
    if (vibrationButton.isChecked()) {
        SoundPlayer.setVibrationEnabled(true);
    } else {
        SoundPlayer.setVibrationEnabled(false);
    }
      }
  });
    }

    @Override
    /**
     * onResume is overriden in order to utterly abandon sound focus if
     * sound has been turned off, or resume sound if on.
     * 
     */
    public void onResume() {
  super.onResume();

  if (SoundPlayer.getSoundEnabled() == false) {
      if (focusHelper != null) {
    focusHelper.abandonFocus();
      }
      SoundPlayer.stop();
  } else {
      SoundPlayer.resume();
  }
    }

    @Override
    public void onPause() {
  super.onPause(); // Always call the superclass method first

  // Pause sound when paused
  if (SoundPlayer.getSoundEnabled()) {
      SoundPlayer.pause();
  }
    }

    @Override
    public void onSaveInstanceState(Bundle savedInstanceState) {
  // Save name, user status, and user picture
  savedInstanceState.putString("Name", userName.getText().toString());
  savedInstanceState.putString("status", userStatus.getText().toString());
  savedInstanceState.putParcelable("picture", img);

  // Save the user's current game state
  savedInstanceState.putInt("volume", soundVolume);
  savedInstanceState.putBoolean("sound", soundButton.isChecked());
  savedInstanceState.putBoolean("vibration", vibrationButton.isChecked());

  updateSettings();

  // Always call the superclass so it can save the view hierarchy state
  super.onSaveInstanceState(savedInstanceState);
    }

    @Override
    public void onRestoreInstanceState(Bundle savedInstanceState) {
  // Always call the superclass so it can restore the view hierarchy
  super.onRestoreInstanceState(savedInstanceState);

  // Restore name, user status, and user picture
  userName.setText(savedInstanceState.getString("Name"));
  userStatus.setText(savedInstanceState.getString("status"));
  img = savedInstanceState.getParcelable("picture");
  userImg.setImageBitmap(img);

  soundVolume = savedInstanceState.getInt("volume");
  soundButton.setChecked(savedInstanceState.getBoolean("sound"));
  vibrationButton.setChecked(savedInstanceState.getBoolean("vibration"));

  volumeBar.setProgress(soundVolume);
    }

    /**
     * Update the database with user sound settings
     */
    private void updateSettings() {
  String name = userName.getText().toString();
  User user;

  if (name != null) {
      if (name != "") {
    user = db.getUser(userName.getText().toString());
      } else {
    user = null;
      }
  } else {
      user = null;
  }

  // Save the current sound settings is a user is logged in
  if (user != null) {
      soundData.updateEntry(user); // defaults to "default" user if null
  }
    }

    /**
     * Retrieve user sound settings
     */
    private void getSettings() {
  String name = userName.getText().toString();

  // Restores data to SoundPlayer
  if (name != null) {
      if (name != "") {
    soundData.getEntry(name);
      }
  }

  // Restore visual appearance
  if (!SoundPlayer.getSoundEnabled()) {
      soundButton.setChecked(false);
  } else {
      soundButton.setChecked(true);
  }

  if (!SoundPlayer.getVibrationEnabled()) {
      vibrationButton.setChecked(false);
  } else {
      vibrationButton.setChecked(true);
  }

  soundVolume = SoundPlayer.getCurrentVolume();
  volumeBar.setProgress(soundVolume);

  // Restore volume setting
  float volume = (float) (one - (Math.log(MAX_VOLUME - soundVolume) / Math
    .log(MAX_VOLUME)));
  SoundPlayer.setVolume(volume, volume);
    }

    /**
     * The getAudioFocus method attempts to gain focus for playing audio. If
     * full access can't be gained, transitive access at a quiet volume is
     * attempted. If that can't be granted, false is returned.
     * 
     * @return : true if focus in some form is granted, otherwise false
     */
    private boolean getAudioFocus() {

  if (focusHelper != null) {
      if (!focusHelper.requestFocus()) {
    if (!focusHelper.requestQuietFocus()) {
        return false;
    } else {
        return true;
    }
      } else {
    return true;
      }
  }

  return false;
    }

    /**
     * playButton plays the button sound
     * 
     * If there is an AudioFocusHelper (api >= 8) use it, otherwise default to
     * SoundPlayer
     */
    public void playButton() {
  if (SoundPlayer.getSoundEnabled()) {
      if (focusHelper != null) {
    if (getAudioFocus()) {
        focusHelper.playButton();
    }
      } else {
    SoundPlayer.playButton(this);
      }
  }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
  getMenuInflater().inflate(R.menu.activity_sound_settings, menu);
  return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
  switch (item.getItemId()) {
  case android.R.id.home:
      NavUtils.navigateUpFromSameTask(this);
      return true;
  }
  return super.onOptionsItemSelected(item);
    }

    /**
     * Change the visual progress of the bar.
     */
    public void onProgressChanged(SeekBar seekBar, int progress,
      boolean fromTouch) {
  // On change
  soundVolume = progress;
    }

    public void onStartTrackingTouch(SeekBar seekBar) {
  // Tracking on
    }

    /**
     * Handle changing volume.
     */
    public void onStopTrackingTouch(SeekBar seekBar) {
  // Tracking off
  soundVolume = seekBar.getProgress();
  SoundPlayer.setCurrentVolume(soundVolume);

  Context context = getApplicationContext();
  CharSequence text = Float.toString(soundVolume);
  int duration = Toast.LENGTH_SHORT;

  Toast toast = Toast.makeText(context, text, duration);
  toast.show();

  float volume = (float) (one - (Math.log(MAX_VOLUME - soundVolume) / Math
    .log(MAX_VOLUME)));
  SoundPlayer.setVolume(volume, volume);
    }

    /**
     * onStop is called when the activity is shut down, usually before being
     * destroyed. We need to stop any media players to properly free up memory.
     * The focus helper should lose focus anyway, but no reason not to tie up
     * loose ends.
     */
    @Override
    public void onStop() {
  // cancel any noises and abandon focus
  SoundPlayer.stop();

  if (focusHelper != null) {
      focusHelper.abandonFocus();
  }

  // Update user settings
  updateSettings();

  // call the super method
  super.onStop();
    }

    /**
     * onKeyDown overrides onKeyDown and allows code to be executed when the
     * back button is pushed in the simulator / on the mobile phone Since
     * pushing "back" won't necessarily call the destroy method as far as I
     * understand it.
     * 
     * @param keyCode
     *            : code of the key pressed
     * @param event
     *            : the event for the key pressed
     */
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
  if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == zero) {

      // continue backwards (kills current activity calling onDestroy)
      finish();

      return true;
  }

  return super.onKeyDown(keyCode, event);
    }
}
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