miwok:NumbersFragment

.java

package com.example.android.miwok;


import android.content.Context;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;

import java.util.ArrayList;

/**
 * A simple {@link Fragment} subclass.
 */
public class NumbersFragment extends android.support.v4.app.Fragment {

    MediaPlayer mMediaPlayer;
    private AudioManager audioManager;
    private AudioManager.OnAudioFocusChangeListener mOnAudioFocusChangeListener ;

    //release Mediaplayer resources
    public void releaseMediaPlayerResource() {
        if (mMediaPlayer != null) {
            mMediaPlayer.release();
            mMediaPlayer = null;
        }
    }

    @Override
    public void onStop() {
        super.onStop();
        releaseMediaPlayerResource();
    }

    public NumbersFragment() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.word_list, container, false);

        // Create a list of words
        final ArrayList<Word> words = new ArrayList<Word>();
        words.add(new Word("one", "lutti", R.drawable.number_one, R.raw.number_one));
        words.add(new Word("two", "otiiko", R.drawable.number_two, R.raw.number_two));
        words.add(new Word("three", "tolookosu", R.drawable.number_three, R.raw.number_three));
        words.add(new Word("four", "oyyisa", R.drawable.number_four, R.raw.number_four));
        words.add(new Word("five", "massokka", R.drawable.number_five, R.raw.number_five));
        words.add(new Word("six", "temmokka", R.drawable.number_six, R.raw.number_six));
        words.add(new Word("seven", "kenekaku", R.drawable.number_seven, R.raw.number_seven));
        words.add(new Word("eight", "kawinta", R.drawable.number_eight, R.raw.number_eight));
        words.add(new Word("nine", "wo’e", R.drawable.number_nine, R.raw.number_nine));
        words.add(new Word("ten", "na’aacha", R.drawable.number_ten, R.raw.number_ten));

        // Create an {@link WordAdapter}, whose data source is a list of {@link Word}s. The
        // adapter knows how to create list items for each item in the list.
        WordAdapter adapter = new WordAdapter(getActivity(), words, R.color.category_numbers);

        // Find the {@link ListView} object in the view hierarchy of the {@link Activity}.
        // There should be a {@link ListView} with the view ID called list, which is declared in the
        // word_list.xml layout file.
        ListView listView = (ListView) rootView.findViewById(R.id.list);

        // Make the {@link ListView} use the {@link WordAdapter} we created above, so that the
        // {@link ListView} will display list items for each {@link Word} in the list.
        listView.setAdapter(adapter);

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                releaseMediaPlayerResource();

                mMediaPlayer = MediaPlayer.create(getActivity(), words.get(position).getMediaplayerId());

                //request audiofocus
                audioManager = (AudioManager) getActivity().getSystemService(Context.AUDIO_SERVICE);
                int requestResult = audioManager.requestAudioFocus(mOnAudioFocusChangeListener, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
                if (requestResult == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
                    mMediaPlayer.start();
                    mMediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
                        @Override
                        public void onCompletion(MediaPlayer mp) {
                            releaseMediaPlayerResource();
                        }
                    });
                }
            }
        });

        return rootView;

    }

}