Android Open Source - MusicPlayer Abstract Song Picker

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Back to project page MusicPlayer.

License

The source code is released under:

MIT License

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Java Source Code

package com.dsvoronin.musicplayer;
/* w  w w  .j  ava2s  .  c o  m*/
import org.jetbrains.annotations.NotNull;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by dsvoronin on 27/02/14.
 */
abstract class AbstractSongPicker implements SongPicker {

    static final int INVALID_INDEX = -1;
    protected int mCurrentIndex = INVALID_INDEX;
    protected List<Playable> mTracks = new ArrayList<Playable>();

    @Override
    public void refresh(@NotNull List<Playable> tracks) {
        mTracks.clear();
        mTracks.addAll(tracks);
        mCurrentIndex = 0;
    }

    @Override
    public Playable pickSong() {
        if (mCurrentIndex == INVALID_INDEX) {
            return null;
        }

        Playable playable = mTracks.get(mCurrentIndex);

        if (mCurrentIndex < mTracks.size() - 1) {
            mCurrentIndex = mCurrentIndex + 1;
        } else {
            mCurrentIndex = 0;
        }

        return playable;
    }
}

Java Source Code List