Android开发本地及网络Mp3音乐播放器(十)最近播放界面与数据保存更新

实现功能：
实现MyLoveMusicActivity（音乐收藏界面）
实现MyRecordMusicActivity（最近播放界面）
实现MyMusicListFragment（本地音乐界面）ItemClick事件发生后，切换到PlayActivity（独立音乐播放界面）只播放 本地音乐。
实现MyLoveMusicActivity（音乐收藏界面）ItemClick事件发生后，切换到PlayActivity（独立音乐播放界面）只播放 音乐收藏。
实现MyRecordMusicActivity（最近播放界面）ItemClick事件发生后，切换到PlayActivity（独立音乐播放界面）只播放 最近播放。
通过字段解决数据库，音乐收藏、最近播放，共用一个数据库的问题。

截止到目前的源码下载：
http://download.csdn.net/detail/iwanghang/9505907

xUtils简介：
http://blog.csdn.net/iwanghang/article/details/51268639

xUtils AndroidStudio安装：
http://blog.csdn.net/iwanghang/article/details/51268890

欢迎移动开发爱好者交流：我的微信是iwanghang

另外，我打算开始找工作，如果沈阳或周边城市公司有意，也请与我联系。

实现效果如图：

实现代码如下：
MyRecordMusicActivity如下：

package com.iwanghang.drmplayer;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ListView;import android.widget.TextView;import com.iwanghang.drmplayer.adapter.MyMusicListAdapter;import com.iwanghang.drmplayer.utils.Constant;import com.iwanghang.drmplayer.vo.Mp3Info;import com.lidroid.xutils.db.sqlite.Selector;import com.lidroid.xutils.exception.DbException;import java.util.ArrayList;import java.util.List;/** * Created by iwanghang on 16/4/27. * 最近播放的音乐列表界面 */public class MyRecordMusicActivity extends BaseActivity implements OnItemClickListener {    private ListView listView_record;    private TextView textView2_no_data;    private DRMPlayerApp app;    private ArrayList<Mp3Info> recordMp3Infos;    private MyMusicListAdapter adapter;    //private boolean isChange = false;//表示当前播放列表是否为收藏列表    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        app = (DRMPlayerApp) getApplication();        setContentView(R.layout.activity_my_record_music_list);//绑定布局        listView_record = (ListView) findViewById(R.id.listView_record);//实例化布局        textView2_no_data = (TextView) findViewById(R.id.textView2_no_data);        listView_record.setOnItemClickListener(this);        initData();//初始化数据                //listView_love.setAdapter();    }    private void initData() {//初始化数据        try {            List<Mp3Info> list = app.dbUtils.findAll(Selector.from(Mp3Info.class).where("playTime","!=","0").orderBy("playTime",true).limit(Constant.MY_RECORD_NUM));//查找5首最近播放的音乐            if (list==null || list.size()==0){                textView2_no_data.setVisibility(View.VISIBLE);//温馨提示.显示                listView_record.setVisibility(View.GONE);//最近播放列表.隐藏            }else {                textView2_no_data.setVisibility(View.GONE);//温馨提示.隐藏                listView_record.setVisibility(View.VISIBLE);//最近播放列表.显示                recordMp3Infos = (ArrayList<Mp3Info>) list;                adapter = new MyMusicListAdapter(this,recordMp3Infos);                listView_record.setAdapter(adapter);            }        } catch (DbException e) {            e.printStackTrace();        }    }    //把播放服务的绑定和解绑放在onResume,onPause里,好处是,每次回到当前Activity就获取一次播放状态    @Override    protected void onResume() {        super.onResume();        bindPlayService();//绑定服务    }    @Override    protected void onPause() {        super.onPause();        unbindPlayService();//解绑服务    }    @Override    protected void onDestroy() {        super.onDestroy();        unbindPlayService();//解绑服务    }    @Override    public void publish(int progress) {    }    @Override    public void change(int progress) {    }    @Override    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {        //如果当前播放列表不是收藏列表        if (playService.getChangePlayList() != PlayService.RECORD_MUSIC_LIST){            playService.setMp3Infos(recordMp3Infos);//播放列表切换为最近播放            playService.setChangePlayList(PlayService.RECORD_MUSIC_LIST);            System.out.println("播放列表切换为最近播放");        }        playService.play(position);    }}

activity_my_record_music_list.xml如下：

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent">    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:gravity="center"        android:text="记录您最近听过的5首歌曲"        android:textColor="@android:color/white"        android:background="#686868"        android:textSize="15sp"        android:id="@+id/textView2_record"        android:layout_alignParentTop="true"        android:layout_centerHorizontal="true" />    <TextView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:gravity="center"        android:text="暂无最近播放音乐"        android:textColor="@android:color/holo_blue_light"        android:layout_margin="5dp"        android:textSize="40sp"        android:id="@+id/textView2_no_data"        android:layout_below="@+id/textView2_record"        android:layout_centerHorizontal="true" />    <ListView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:id="@+id/listView_record"        android:layout_below="@+id/textView2_record"        android:layout_centerHorizontal="true" /></RelativeLayout>

PlayService如下：

package com.iwanghang.drmplayer;import android.app.Service;import android.content.Intent;import android.media.MediaPlayer;import android.media.MediaPlayer.OnCompletionListener;import android.media.MediaPlayer.OnErrorListener;import android.net.Uri;import android.os.Binder;import android.os.IBinder;import com.iwanghang.drmplayer.utils.MediaUtils;import com.iwanghang.drmplayer.vo.Mp3Info;import java.io.IOException;import java.util.ArrayList;import java.util.Random;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;/** * 音乐播放的服务组件 * 实现功能: * 播放 * 暂停 * 下一首 * 上一首 * 获取当前歌曲的播放进度 * <p/> * 需要在AndroidManifest.xml添加以下代码: * <service * android:name=".PlayService" * android:enabled="true" * android:exported="true"> * </service> * <p/> * 实现功能(播放模式play_mode): * 顺序播放 * 随机播放 * 单曲循环 */public class PlayService extends Service implements OnCompletionListener, OnErrorListener {    private MediaPlayer mPlayer;    private int currentPosition;//当前正在播放的歌曲的位置    ArrayList<Mp3Info> mp3Infos;    private MusicUpdatrListener musicUpdatrListener;    //创建一个单实力的线程,用于更新音乐信息    private ExecutorService es = Executors.newSingleThreadExecutor();    //播放模式    public static final int ORDER_PLAY = 1;//顺序播放    public static final int RANDOM_PLAY = 2;//随机播放    public static final int SINGLE_PLAY = 3;//单曲循环    private int play_mode = ORDER_PLAY;//播放模式,默认为顺序播放    /**     * @param play_mode ORDER_PLAY = 1;//顺序播放     *                  RANDOM_PLAY = 2;//随机播放     *                  SINGLE_PLAY = 3;//单曲循环     */    //set方法    public void setPlay_mode(int play_mode) {        this.play_mode = play_mode;    }    //get方法    public int getPlay_mode() {        return play_mode;    }    private boolean isPause = false;//歌曲播放中的暂停状态    public boolean isPause() {        return isPause;    }    //切换播放列表,默认MY_MUSIC_LIST    public static final int MY_MUSIC_LIST = 1;//本地音乐    public static final int LOVE_MUSIC_LIST = 2;//收藏音乐    public static final int RECORD_MUSIC_LIST = 3;//最近播放    private int changePlayList = MY_MUSIC_LIST;    public int getChangePlayList() {//get方法        return changePlayList;    }    public void setChangePlayList(int changePlayList) {//set方法        this.changePlayList = changePlayList;    }    public PlayService() {    }    //ArrayList<Mp3Info> mp3Infos; set方法    public void setMp3Infos(ArrayList<Mp3Info> mp3Infos) {        this.mp3Infos = mp3Infos;    }    public int getCurrentPosition() {        return currentPosition;    }    private Random random = new Random();//创建随机对象    //MediaPlayer.Completion 播放完成 实现播放下一首功能    //播放完成以后,判断播放模式(曲目循环方式)    //为了实现循环后,可以显示音乐信息,需要在PlayAcivity的change里添加对应代码    @Override    public void onCompletion(MediaPlayer mp) {        switch (play_mode) {            case ORDER_PLAY://顺序播放                next();//下一首                break;            case RANDOM_PLAY://随机播放                //currentPosition = random.nextInt(mp3Infos.size());//随机下标为mp3Infos.size()                //play(currentPosition);                play(random.nextInt(mp3Infos.size()));                break;            case SINGLE_PLAY://单曲循环                play(currentPosition);                break;            default:                break;        }    }    //MediaPlayer.Error 播放错误 处理实现播放下一首功能出现的错误    @Override    public boolean onError(MediaPlayer mp, int what, int extra) {        mp.reset();//重启        return false;    }    //内部类PlayBinder实现Binder,得到当前PlayService对象    class PlayBinder extends Binder {        public PlayService getPlayService() {            System.out.println("PlayService #1 " + PlayService.this);            return PlayService.this;        }    }    @Override    public IBinder onBind(Intent intent) {        return new PlayBinder();//通过PlayBinder拿到PlayService,给Activity调用    }    public ArrayList<Mp3Info> getMp3Infos() {        return mp3Infos;    }    @Override    public void onCreate() {        super.onCreate();        //恢复状态值        DRMPlayerApp app = (DRMPlayerApp) getApplication();        currentPosition = app.sp.getInt("currentPosition", 0);        play_mode = app.sp.getInt("play_mode", PlayService.ORDER_PLAY);        //创建DRMPlayerApp继承Application,同时需要在把AndroidManiFest中的public换成DRMPlayerApp        //在DRMPlayerApp的onCreate中 实例化 SharedPreferences        //在MainActivity的onDestroy中 保存状态值        //在PlayService的onCreate中 恢复状态值        mPlayer = new MediaPlayer();        mPlayer.setOnCompletionListener(this);//注册播放完成事件        mPlayer.setOnErrorListener(this);//注册播放错误事件        mp3Infos = MediaUtils.getMp3Infos(this);//获取Mp3列表        es.execute(updateSteatusRunnable);//更新进度值    }    @Override    public void onDestroy() {        super.onDestroy();        //回收线程        if (es != null && !es.isShutdown()) {//当进度值等于空,并且,进度值没有关闭            es.shutdown();            es = null;        }    }    //利用Runnable来实现多线程    /**     * Runnable     * Java中实现多线程有两种途径:继承Thread类或者实现Runnable接口.     * Runnable接口非常简单,就定义了一个方法run(),继承Runnable并实现这个     * 方法就可以实现多线程了,但是这个run()方法不能自己调用,必须由系统来调用,否则就和别的方法没有什么区别了.     * 好处:数据共享     */    Runnable updateSteatusRunnable = new Runnable() {//更新状态        @Override        public void run() {            //不断更新进度值            while (true) {                //音乐更新监听不为空,并且,媒体播放不为空,并且媒体播放为播放状态                if (musicUpdatrListener != null && mPlayer != null && mPlayer.isPlaying()) {                    musicUpdatrListener.onPublish(getCurrentProgress());//获取当前的进度值                }                try {                    Thread.sleep(500);//500毫秒更新一次                } catch (InterruptedException e) {                    e.printStackTrace();                }            }        }    };    //播放    public void play(int position) {        Mp3Info mp3Info;        if (position >= 0 && position < mp3Infos.size()) {        } else {            position = 0;        }        mp3Info = mp3Infos.get(position);//获取mp3Info对象        //进行播放,播放前判断        try {            mPlayer.reset();//重启            mPlayer.setDataSource(this, Uri.parse(mp3Info.getUrl()));//资源解析,Mp3地址            mPlayer.prepare();//准备            mPlayer.start();//开始(播放)            currentPosition = position;//保存当前位置到currentPosition,比如第一首,currentPosition = 1        } catch (IOException e) {            e.printStackTrace();        }        if (musicUpdatrListener != null) {            musicUpdatrListener.onChange(currentPosition);//更新当前位置        }    }    //暂停    public void pause() {        if (mPlayer.isPlaying()) {            mPlayer.pause();            isPause = true;        }    }    //下一首    public void next() {        if (currentPosition >= mp3Infos.size() - 1) {//如果超出最大值,(因为第一首是0),说明已经是最后一首            currentPosition = 0;//回到第一首        } else {            currentPosition++;//下一首        }        play(currentPosition);    }    //上一首 previous    public void prev() {        if (currentPosition - 1 < 0) {//如果上一首小于0,说明已经是第一首            currentPosition = mp3Infos.size() - 1;//回到最后一首        } else {            currentPosition--;//上一首        }        play(currentPosition);    }    //默认开始播放的方法    public void start() {        if (mPlayer != null && !mPlayer.isPlaying()) {//判断当前歌曲不等于空,并且没有在播放的状态            mPlayer.start();        }    }    //获取当前是否为播放状态,提供给MyMusicListFragment的播放暂停按钮点击事件判断状态时调用    public boolean isPlaying() {        if (mPlayer != null) {            return mPlayer.isPlaying();        }        return false;    }    //获取当前的进度值    public int getCurrentProgress() {        if (mPlayer != null && mPlayer.isPlaying()) {//mPlayer不为空,并且,为播放状态            return mPlayer.getCurrentPosition();        }        return 0;    }    //getDuration 获取文件的持续时间    public int getDuration() {        return mPlayer.getDuration();    }    //seekTo 寻找指定的时间位置 (跳到某个时间点进行播放)    public void seekTo(int msec) {        mPlayer.seekTo(msec);    }    //更新状态的接口(PlayService的内部接口),并在BaseActivity中实现    public interface MusicUpdatrListener {//音乐更新监听器        public void onPublish(int progress);//发表进度事件(更新进度条)        public void onChange(int position); //更新歌曲位置.按钮的状态等信息        //声明MusicUpdatrListener后,添加set方法    }    //set方法    public void setMusicUpdatrListener(MusicUpdatrListener musicUpdatrListener) {        this.musicUpdatrListener = musicUpdatrListener;    }}

PlayActivity如下：

package com.iwanghang.drmplayer;import android.graphics.Bitmap;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.v4.view.ViewPager;import android.view.View;import android.view.View.OnClickListener;import android.widget.ImageView;import android.widget.SeekBar;import android.widget.SeekBar.OnSeekBarChangeListener;import android.widget.TextView;import android.widget.Toast;import com.iwanghang.drmplayer.utils.ImageUtils;import com.iwanghang.drmplayer.utils.MediaUtils;import com.iwanghang.drmplayer.vo.Mp3Info;import com.lidroid.xutils.db.sqlite.Selector;import com.lidroid.xutils.exception.DbException;import java.util.ArrayList;import static com.iwanghang.drmplayer.PlayService.ORDER_PLAY;import static com.iwanghang.drmplayer.PlayService.RANDOM_PLAY;import static com.iwanghang.drmplayer.PlayService.SINGLE_PLAY;/** * PlayActivity 点击MyMusicListFragment(本地音乐)底部UI中的专辑封面图片打开的Activity */public class PlayActivity extends BaseActivity implements OnClickListener, OnSeekBarChangeListener {    private TextView textView1_title;//歌名    private ImageView imageView1_ablum;//专辑封面图片    private SeekBar seekBar1;//进度条    private TextView textView1_start_time, textView1_end_time;//开始时间,结束时间    private ImageView imageView1_play_mode;//菜单    private ImageView imageView3_previous, imageView2_play_pause, imageView1_next;//上一首,播放暂停,下一首    private ImageView imageView1_ablum_reflection;//专辑封面图片倒影    private ImageView imageView1_favorite;//收藏按钮    //private ArrayList<Mp3Info> mp3Infos;    //private int position;//当前播放的位置    private boolean isPause = false;//当前播放的是否为暂停状态    private static final int UPDATE_TIME = 0x1;//更新播放事件的标记    private DRMPlayerApp app;//取出全局对象 方便调用//    private ViewPager viewPager;//    private MyPagerAdapter adapter;//    private MyMusicListFragment myMusicListFragment;//    private NetMusicListFragment netMusicListFragment;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_music_play);        //取出全局对象 方便调用        app = (DRMPlayerApp) getApplication();        //初始化界面信息        textView1_title = (TextView) findViewById(R.id.textView1_title);//歌名        imageView1_ablum = (ImageView) findViewById(R.id.imageView1_ablum);//专辑封面图片        seekBar1 = (SeekBar) findViewById(R.id.seekBar1);//进度条        textView1_start_time = (TextView) findViewById(R.id.textView1_start_time);//开始时间        textView1_end_time = (TextView) findViewById(R.id.textView1_end_time);//结束时间        imageView1_play_mode = (ImageView) findViewById(R.id.imageView1_play_mode);//菜单        imageView3_previous = (ImageView) findViewById(R.id.imageView3_previous);//上一首        imageView2_play_pause = (ImageView) findViewById(R.id.imageView2_play_pause);//播放暂停        imageView1_next = (ImageView) findViewById(R.id.imageView1_next);//下一首        imageView1_ablum_reflection = (ImageView) findViewById(R.id.imageView1_ablum_reflection);//专辑封面图片倒影        imageView1_favorite = (ImageView) findViewById(R.id.imageView1_favorite);//收藏按钮        //注册按钮点击监听事件        imageView1_play_mode.setOnClickListener(this);        imageView2_play_pause.setOnClickListener(this);        imageView3_previous.setOnClickListener(this);        imageView1_next.setOnClickListener(this);        seekBar1.setOnSeekBarChangeListener(this);        imageView1_favorite.setOnClickListener(this);        //mp3Infos = MediaUtils.getMp3Infos(this);        //bindPlayService();//绑定服务,异步过程,绑定后需要取得相应的值,来更新界面        myHandler = new MyHandler(this);        //以下直接调用change()是不行的,因为异步问题,会发生NullPointerException空指针异常        //从MyMusicListFragment的专辑封面图片点击时间传过来的position(当前播放的位置)        //position = getIntent().getIntExtra("position",0);        //change(position);        //通过在BaseActivity中绑定Service,添加如下代码实现change()        //musicUpdatrListener.onChange(playService.getCurrentProgeress());        //从MyMusicListFragment的专辑封面图片点击时间传过来的isPause(当前播放的是否为暂停状态)        //isPause = getIntent().getBooleanExtra("isPause",false);    }//    private void initViewPager(){//专辑封面图片Pager与歌词Pager//        View album_image_layout = getLayoutInflater().inflate(R.layout.album_image_layout,null);//        //初始化界面信息//        textView1_title = (TextView) findViewById(R.id.textView1_title);//歌名//        imageView1_ablum = (ImageView) findViewById(R.id.imageView1_ablum);//专辑封面图片//        views.add(album_image_layout);//添加专辑封面图片Pager//        views.add(getLayoutInflater().inflate(R.layout.lrc_layout));//添加歌词Pager//        viewPager.setAdapter(new MyPagerAdapter());//    }    //把播放服务的绑定和解绑放在onResume,onPause里,好处是,每次回到当前Activity就获取一次播放状态    @Override    protected void onResume() {        super.onResume();        bindPlayService();//绑定服务    }    @Override    protected void onPause() {        super.onPause();        unbindPlayService();//解绑服务    }    @Override    protected void onDestroy() {        super.onDestroy();        unbindPlayService();//解绑服务    }    //Handler用于更新已经播放时间    private static MyHandler myHandler;    //进度条改变 (fromUser 是否来自用户的改变 , 而不是程序自身控制的改变)    @Override    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {        if (fromUser) {            //playService.pause();//暂停            playService.seekTo(progress);//寻找指定的时间位置 (跳到某个时间点进行播放)            //playService.start();//播放        }    }    //进度条开始触摸    @Override    public void onStartTrackingTouch(SeekBar seekBar) {    }    //进度条停止触摸    @Override    public void onStopTrackingTouch(SeekBar seekBar) {    }    static class MyHandler extends Handler {        private PlayActivity playActivity;        public MyHandler(PlayActivity playActivity) {            this.playActivity = playActivity;        }        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            if (playActivity != null) {                switch (msg.what) {                    case UPDATE_TIME://更新时间(已经播放时间)                        playActivity.textView1_start_time.setText(MediaUtils.formatTime(msg.arg1));                        break;                }            }        }    }    @Override    public void publish(int progress) {        //以下是是直接调用线程,但是不能这样做,会报错,线程异常        //textView1_start_time.setText(MediaUtils.formatTime(progress));        //所以,我们需要使用Handler        Message msg = myHandler.obtainMessage(UPDATE_TIME);//用于更新已经播放时间        msg.arg1 = progress;//用于更新已经播放时间        myHandler.sendMessage(msg);//用于更新已经播放时间        seekBar1.setProgress(progress);    }    @Override    public void change(int position) {//初始化,独立播放界面的歌曲切换后的初始化界面上的歌曲信息        //if (this.playService.isPlaying()) {//获取是否为播放状态        System.out.println("PlayActivity #100 position = " + position);        Mp3Info mp3Info = playService.mp3Infos.get(position);        textView1_title.setText(mp3Info.getTitle());//设置歌名        //获取专辑封面图片        Bitmap albumBitmap = MediaUtils.getArtwork(this, mp3Info.getId(), mp3Info.getAlbumId(), true, false);        //改变播放界面专辑封面图片        imageView1_ablum.setImageBitmap(albumBitmap);        textView1_end_time.setText(MediaUtils.formatTime(mp3Info.getDuration()));//设置结束时间        imageView2_play_pause.setImageResource(R.mipmap.app_music_pause);//设置暂停图片        seekBar1.setProgress(0);//设置当前进度为0        seekBar1.setMax((int) mp3Info.getDuration());//设置进度条最大值为MP3总时间        if (playService.isPlaying()) {            imageView2_play_pause.setImageResource(R.mipmap.app_music_pause);        } else {            imageView2_play_pause.setImageResource(R.mipmap.app_music_play);        }        if (imageView1_ablum != null) {            imageView1_ablum_reflection.setImageBitmap(ImageUtils.createReflectionBitmapForSingle(albumBitmap));//显示倒影        }        switch (playService.getPlay_mode()) {            case ORDER_PLAY://顺序播放                imageView1_play_mode.setImageResource(R.mipmap.app_mode_order);                //imageView2_play_pause.setTag(ORDER_PLAY);                break;            case PlayService.RANDOM_PLAY://随机播放                imageView1_play_mode.setImageResource(R.mipmap.app_mode_random);                //imageView2_play_pause.setTag(RANDOM_PLAY);                break;            case PlayService.SINGLE_PLAY://单曲循环                imageView1_play_mode.setImageResource(R.mipmap.app_mode_single);                //imageView2_play_pause.setTag(SINGLE_PLAY);                break;            default:                break;        }        //初始化收藏状态        try {            Mp3Info loveMp3Info = app.dbUtils.findFirst(Selector.from(Mp3Info.class).where("mp3InfoId", "=", mp3Info.getMp3InfoId()));//查出歌曲,SQL语句            System.out.println("初始化收藏状态" + loveMp3Info);//            if (loveMp3Info != null) {//                imageView1_favorite.setImageResource(R.mipmap.app_love_selected);//            } else {//                imageView1_favorite.setImageResource(R.mipmap.app_love_unselected);//            }            if (loveMp3Info != null) {                System.out.println("loveMp3Info.getIsLove() = " + loveMp3Info.getIsLove());                if (loveMp3Info.getIsLove() == 0) {//返回值不为null,且,isLove为0时,也显示为'未收藏'                    imageView1_favorite.setImageResource(R.mipmap.app_love_unselected);                }else {//返回值为null,且,isLove为1时,一定显示为'已收藏'                    imageView1_favorite.setImageResource(R.mipmap.app_love_selected);                }            } else {//返回值为null,一定显示为'未收藏'                imageView1_favorite.setImageResource(R.mipmap.app_love_unselected);            }        } catch (DbException e) {            e.printStackTrace();        }    }    //如果是本地音乐,id就是id;如果是收藏音乐,id则是mp3InfoId    //提供给 收藏按钮 点击事件时 调用.    private long getId(Mp3Info mp3Info){        //初始收藏状态        long id = 0;        switch (playService.getChangePlayList()){            case PlayService.MY_MUSIC_LIST:                System.out.println("当前为本地列表");                id = mp3Info.getId();                System.out.println("id =" + id);                break;            case PlayService.LOVE_MUSIC_LIST:                System.out.println("当前为收藏列表");                id = mp3Info.getMp3InfoId();                System.out.println("id =" + id);                break;            default:                break;        }        return id;    }    //点击事件    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.imageView2_play_pause: {//播放暂停按钮                if (playService.isPlaying()) {//如果是播放状态                    imageView2_play_pause.setImageResource(R.mipmap.app_music_play);//设置播放图片                    playService.pause();                } else {                    if (playService.isPause()) {                        imageView2_play_pause.setImageResource(R.mipmap.app_music_pause);//设置暂停图片                        playService.start();//播放事件                    } else {                        //只有打开APP没有点击任何歌曲,同时,直接点击暂停播放按钮时.才会调用                        //playService.play(0);                        //只有打开APP没有点击任何歌曲,同时,直接点击暂停播放按钮时.才会调用                        //默认播放的是,在PlayService的onCreate中 恢复状态值                        playService.play(playService.getCurrentPosition());                    }                }                break;            }            case R.id.imageView1_next: {//下一首按钮                playService.next();//下一首                break;            }            case R.id.imageView3_previous: {//上一首按钮                playService.prev();//上一首                break;            }            case R.id.imageView1_play_mode: {//循环模式按钮                //int mode = (int) imageView1_play_mode.getTag();                /**                 * 以下Tosat内容,在strings.xml里,添加对应代码                 *<string name="order_play">顺序播放</string>                 *<string name="random_play">随机播放</string>                 *<string name="single_play">单曲循环</string>                 */                switch (playService.getPlay_mode()) {                    case ORDER_PLAY:                        imageView1_play_mode.setImageResource(R.mipmap.app_mode_random);                        //imageView1_play_mode.setTag(RANDOM_PLAY);                        playService.setPlay_mode(RANDOM_PLAY);                        //Toast.makeText(getApplicationContext(),"随机播放",Toast.LENGTH_SHORT).show();//这句也可以                        //Toast.makeText(PlayActivity.this, "随机播放", Toast.LENGTH_SHORT).show();//这句也可以                        Toast.makeText(PlayActivity.this, getString(R.string.random_play), Toast.LENGTH_SHORT).show();                        break;                    case RANDOM_PLAY:                        imageView1_play_mode.setImageResource(R.mipmap.app_mode_single);                        //imageView1_play_mode.setTag(SINGLE_PLAY);                        playService.setPlay_mode(SINGLE_PLAY);                        //Toast.makeText(getApplicationContext(),"单曲循环",Toast.LENGTH_SHORT).show();//这句也可以                        //Toast.makeText(PlayActivity.this, "单曲循环", Toast.LENGTH_SHORT).show();//这句也可以                        Toast.makeText(PlayActivity.this, getString(R.string.single_play), Toast.LENGTH_SHORT).show();                        break;                    case SINGLE_PLAY:                        imageView1_play_mode.setImageResource(R.mipmap.app_mode_order);                        //imageView1_play_mode.setTag(ORDER_PLAY);                        playService.setPlay_mode(ORDER_PLAY);                        //Toast.makeText(getApplicationContext(),"顺序播放",Toast.LENGTH_SHORT).show();//这句也可以                        //Toast.makeText(PlayActivity.this, "顺序播放", Toast.LENGTH_SHORT).show();//这句也可以                        Toast.makeText(PlayActivity.this, getString(R.string.order_play), Toast.LENGTH_SHORT).show();                        break;                }                break;            }            case R.id.imageView1_favorite: {//收藏按钮  //在vo.Mp3Info里  private long mp3InfoId;//在收藏音乐时用于保存原始ID                Mp3Info mp3Info = playService.mp3Infos.get(playService.getCurrentPosition());//查出歌曲                System.out.println(mp3Info);                try {                    Mp3Info loveMp3Info = app.dbUtils.findFirst(Selector.from(Mp3Info.class).where("mp3InfoId","=",getId(mp3Info)));//查出歌曲,SQL语句                    System.out.println(loveMp3Info);                    if (loveMp3Info==null){//返回值为null,则一定需要save                        System.out.println("不在音乐收藏数据库中 保存音乐数据 原始数据: " + mp3Info);                        mp3Info.setMp3InfoId(mp3Info.getId());                        mp3Info.setIsLove(1);                        System.out.println(mp3Info);                        app.dbUtils.save(mp3Info);//在音乐收藏数据库 保存音乐                        System.out.println("save");                        imageView1_favorite.setImageResource(R.mipmap.app_love_selected);                        //以下是:调试使用,保存以后再查一遍                        loveMp3Info = app.dbUtils.findFirst(Selector.from(Mp3Info.class).where("mp3InfoId","=",getId(mp3Info)));//查出歌曲,SQL语句                        System.out.println("调试使用,保存以后再查一遍 最新数据: " + loveMp3Info);                    }else {//返回值不为null,则一定需要update                        System.out.println("在音乐收藏数据库中 更新音乐数据 原始数据: " + loveMp3Info);                        int isLove = loveMp3Info.getIsLove();                        if (isLove==1){//返回值不为null,且,isLove为1时;设置isLove为0,同时显示为'未收藏'                            loveMp3Info.setIsLove(0);                            imageView1_favorite.setImageResource(R.mipmap.app_love_unselected);                        }else {//返回值不为null,且,isLove为0时;设置isLove为1,同时显示为'已收藏'                            loveMp3Info.setIsLove(1);                            imageView1_favorite.setImageResource(R.mipmap.app_love_selected);                        }                        System.out.println("update");                        app.dbUtils.update(loveMp3Info,"isLove");//更新loveMp3Info数据                        //以下是:调试使用,更新以后再查一遍                        loveMp3Info = app.dbUtils.findFirst(Selector.from(Mp3Info.class).where("mp3InfoId", "=", getId(mp3Info)));//查出歌曲,SQL语句                        System.out.println("调试使用,更新以后再查一遍 最新数据: " + loveMp3Info);                    }                } catch (DbException e) {                    e.printStackTrace();                }                break;            }            default:                break;        }    }}

MainActivity如下：

package com.iwanghang.drmplayer;import android.content.Intent;import android.content.SharedPreferences;import android.graphics.BitmapFactory;import android.graphics.BitmapFactory.Options;import android.graphics.Color;import android.graphics.drawable.ColorDrawable;import android.graphics.drawable.Drawable;import android.graphics.drawable.LayerDrawable;import android.graphics.drawable.TransitionDrawable;import android.os.Build;import android.os.Bundle;import android.os.Handler;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentActivity;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentPagerAdapter;import android.support.v4.view.ViewPager;import android.util.TypedValue;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.ListView;import com.astuetz.PagerSlidingTabStrip;import com.astuetz.viewpager.extensions.sample.QuickContactFragment;import com.iwanghang.drmplayer.utils.MediaUtils;import com.iwanghang.drmplayer.vo.Mp3Info;import java.nio.charset.CoderMalfunctionError;import java.util.ArrayList;public class MainActivity extends BaseActivity {//private final Handler handler = new Handler();private PagerSlidingTabStrip tabs;private ViewPager pager;private MyPagerAdapter adapter;public DRMPlayerApp app;//取出全局对象 方便调用//private Drawable oldBackground = null;//private int currentColor = 0xFFC74B46;private MyMusicListFragment myMusicListFragment;private NetMusicListFragment netMusicListFragment;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//取出全局对象 方便调用app = (DRMPlayerApp) getApplication();setContentView(R.layout.activity_main);tabs = (PagerSlidingTabStrip) findViewById(R.id.tabs);pager = (ViewPager) findViewById(R.id.pager);adapter = new MyPagerAdapter(getSupportFragmentManager());pager.setAdapter(adapter);final int pageMargin = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 4, getResources().getDisplayMetrics());pager.setPageMargin(pageMargin);tabs.setViewPager(pager);//修改主界面颜色,稍后修复功能,暂时使用默认颜色//changeColor(currentColor);//绑定服务//服务在加载SplashActivity(欢迎页面)的时候,已经启动//bindPlayService();//这里,我在MyMusicListFragment里面绑定,而没有在MainActivity里绑定    }@Overridepublic void publish(int progress) {//更新进度条}@Overridepublic void change(int position) {//更新歌曲位置.按钮的状态等信息/** * 本地音乐的播放UI实际上在MyMusicListFragment中,所以要 * 先在MyMusicListFragmen中,写入public void changeUIStatus(int position){} * 然后,传参过去 */if (pager.getCurrentItem()==0){//如果页面等于0,则说明选中的是第一个页面,我的音乐页面myMusicListFragment.loadData();//初始化数据myMusicListFragment.changeUIStatusOnPlay(position);}else if (pager.getCurrentItem()==1){}}//@Override//public boolean onCreateOptionsMenu(Menu menu) {//getMenuInflater().inflate(R.menu.main, menu);//return true;//}////@Override//public boolean onOptionsItemSelected(MenuItem item) {////switch (item.getItemId()) {////case R.id.action_contact://QuickContactFragment dialog = new QuickContactFragment();//dialog.show(getSupportFragmentManager(), "QuickContactFragment");//return true;////}////return super.onOptionsItemSelected(item);//}//private void changeColor(int newColor) {////tabs.setIndicatorColor(newColor);////// change ActionBar color just if an ActionBar is available//if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {////Drawable colorDrawable = new ColorDrawable(newColor);//Drawable bottomDrawable = getResources().getDrawable(R.drawable.actionbar_bottom);//LayerDrawable ld = new LayerDrawable(new Drawable[] { colorDrawable, bottomDrawable });////if (oldBackground == null) {////if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {//ld.setCallback(drawableCallback);//} else {//getActionBar().setBackgroundDrawable(ld);//}////} else {////TransitionDrawable td = new TransitionDrawable(new Drawable[] { oldBackground, ld });////// workaround for broken ActionBarContainer drawable handling on//// pre-API 17 builds//// https://github.com/android/platform_frameworks_base/commit/a7cc06d82e45918c37429a59b14545c6a57db4e4//if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {//td.setCallback(drawableCallback);//} else {//getActionBar().setBackgroundDrawable(td);//}////td.startTransition(200);////}////oldBackground = ld;////// http://stackoverflow.com/questions/11002691/actionbar-setbackgrounddrawable-nulling-background-from-thread-handler//getActionBar().setDisplayShowTitleEnabled(false);//getActionBar().setDisplayShowTitleEnabled(true);////}////currentColor = newColor;////}//public void onColorClicked(View v) {////int color = Color.parseColor(v.getTag().toString());//changeColor(color);////}//@Override//protected void onSaveInstanceState(Bundle outState) {//super.onSaveInstanceState(outState);//outState.putInt("currentColor", currentColor);//}//@Override//protected void onRestoreInstanceState(Bundle savedInstanceState) {//super.onRestoreInstanceState(savedInstanceState);//currentColor = savedInstanceState.getInt("currentColor");//changeColor(currentColor);//}//private Drawable.Callback drawableCallback = new Drawable.Callback() {//@Override//public void invalidateDrawable(Drawable who) {//getActionBar().setBackgroundDrawable(who);//}////@Override//public void scheduleDrawable(Drawable who, Runnable what, long when) {//handler.postAtTime(what, when);//}////@Override//public void unscheduleDrawable(Drawable who, Runnable what) {//handler.removeCallbacks(what);//}//};public class MyPagerAdapter extends FragmentPagerAdapter {private final String[] TITLES = { "本地音乐", "网络音乐"};public MyPagerAdapter(FragmentManager fm) {super(fm);}@Overridepublic CharSequence getPageTitle(int position) {return TITLES[position];}@Overridepublic int getCount() {return TITLES.length;}@Overridepublic Fragment getItem(int position) {//return SuperAwesomeCardFragment.newInstance(position);if(position==0){if(myMusicListFragment==null){myMusicListFragment = MyMusicListFragment.newInstance();}return myMusicListFragment;}else if (position == 1){if(netMusicListFragment==null){netMusicListFragment = NetMusicListFragment.newInstance();}return netMusicListFragment;}return null;//return MyMusicListFragment.newInstance();}}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {//填充菜单getMenuInflater().inflate(R.menu.main_menu,menu);return true;}public boolean onOptionsItemSelected(MenuItem item){//菜单中事件switch (item.getItemId()){case R.id.ilove:Intent intent = new Intent(this,MyLoveMusicActivity.class);startActivity(intent);System.out.println("我的收藏");break;case R.id.near_play:Intent intent2 = new Intent(this,MyRecordMusicActivity.class);startActivity(intent2);System.out.println("最近播放");break;}return true;}@Overrideprotected void onDestroy() {super.onDestroy();//保存当前播放的一些状态值DRMPlayerApp app = (DRMPlayerApp) getApplication();SharedPreferences.Editor editor = app.sp.edit();//保存 当前正在播放的歌曲的位置editor.putInt("currentPosition",playService.getCurrentPosition());//保存 播放模式editor.putInt("play_mode",playService.getPlay_mode());//保存 提交editor.commit();//创建DRMPlayerApp继承Application,同时需要在把AndroidManiFest中的public换成DRMPlayerApp//在DRMPlayerApp的onCreate中 实例化 SharedPreferences//在MainActivity的onDestroy中 保存状态值//在PlayService的onCreate中 恢复状态值}}

解决ActionBar左上角图片不显示问题：
在styles中修改 <item name="android:icon">@mipmap/app_icon</item>即可。

增加新主题：
<style name="AppTheme2" parent="AppBaseTheme">
    <item name="android:windowBackground">@color/background_window</item>
    <item name="android:actionBarStyle">@style/ActionBarStyle.BlueActionBarStyle</item>
</style>
<style name="ActionBarStyle.BlueActionBarStyle" parent="ActionBarStyle">
    <item name="android:icon">@mipmap/app_icon</item>
    <item name="android:background">#FF686868</item>
</style>