Android Open Source - Android-PullToRefresh-master Sound Pull Event Listener

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License

The source code is released under:

Apache License

Java Source Code

/*******************************************************************************
 * Copyright 2011, 2012 Chris Banes.//  www .j a  v a  2s. com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package com.handmark.pulltorefresh.library.extras;

import java.util.HashMap;

import android.content.Context;
import android.media.MediaPlayer;
import android.view.View;

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
import com.handmark.pulltorefresh.library.PullToRefreshBase.State;

public class SoundPullEventListener<V extends View> implements PullToRefreshBase.OnPullEventListener<V> {

  private final Context mContext;
  private final HashMap<State, Integer> mSoundMap;

  private MediaPlayer mCurrentMediaPlayer;

  /**
   * Constructor
   * 
   * @param context - Context
   */
  public SoundPullEventListener(Context context) {
    mContext = context;
    mSoundMap = new HashMap<State, Integer>();
  }

  @Override
  public final void onPullEvent(PullToRefreshBase<V> refreshView, State event, Mode direction) {
    Integer soundResIdObj = mSoundMap.get(event);
    if (null != soundResIdObj) {
      playSound(soundResIdObj.intValue());
    }
  }

  /**
   * Set the Sounds to be played when a Pull Event happens. You specify which
   * sound plays for which events by calling this method multiple times for
   * each event.
   * <p/>
   * If you've already set a sound for a certain event, and add another sound
   * for that event, only the new sound will be played.
   * 
   * @param event - The event for which the sound will be played.
   * @param resId - Resource Id of the sound file to be played (e.g.
   *            <var>R.raw.pull_sound</var>)
   */
  public void addSoundEvent(State event, int resId) {
    mSoundMap.put(event, resId);
  }

  /**
   * Clears all of the previously set sounds and events.
   */
  public void clearSounds() {
    mSoundMap.clear();
  }

  /**
   * Gets the current (or last) MediaPlayer instance.
   */
  public MediaPlayer getCurrentMediaPlayer() {
    return mCurrentMediaPlayer;
  }

  private void playSound(int resId) {
    // Stop current player, if there's one playing
    if (null != mCurrentMediaPlayer) {
      mCurrentMediaPlayer.stop();
      mCurrentMediaPlayer.release();
    }

    mCurrentMediaPlayer = MediaPlayer.create(mContext, resId);
    if (null != mCurrentMediaPlayer) {
      mCurrentMediaPlayer.start();
    }
  }

}

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