摘要：先上效果圖準(zhǔn)備，桌面是一個(gè)小視頻，要求，符合手機(jī)尺寸，最好不要超過，我這個(gè)只有幾，開發(fā)環(huán)境，由于沒后更新。

先上效果圖

準(zhǔn)備：1，桌面是一個(gè)小視頻，要求，符合手機(jī)尺寸，最好不要超過100M，我這個(gè)只有幾M

2，開發(fā)環(huán)境，由于沒后更新。使用的還是Android studio 2.3.3

前言：對(duì)于動(dòng)態(tài)的壁紙大部分手機(jī)廠商還是保留的，不過發(fā)現(xiàn)oppo某一款就沒有這個(gè)功能了，不過絲毫不影響本應(yīng)用的開發(fā)，它只是在沒做動(dòng)態(tài)壁紙的界面而已，系統(tǒng)還是保留的

上代碼：
1，簡(jiǎn)單的布局：

2，動(dòng)態(tài)桌面一直在后臺(tái)跑，肯定就需要service了。繼承WallpaperService

public class MyWallpaper extends WallpaperService {

    public static  final String MYWALLPAPER_ACTION="com.zxyoyo.hosion.dynamicdesk";
    public static  final String KEY_ACTION="key_action";
    public static  final int SOUND_OPEN=1;
    public static  final int SOUND_CLOSE=0;

    @Override
    public Engine onCreateEngine() {
        return new MyEngine();
    }

    public static void openSound(Context context) {
        Intent intent = new Intent(MYWALLPAPER_ACTION);
        intent.putExtra(KEY_ACTION, SOUND_OPEN);
        context.sendBroadcast(intent);
    }
    public static void closeSound(Context context) {
        Intent intent = new Intent(MYWALLPAPER_ACTION);
        intent.putExtra(KEY_ACTION, SOUND_CLOSE);
        context.sendBroadcast(intent);
    }

    public static void setDynamicWallPaper(Context context){
        final Intent intent = new Intent(WallpaperManager.ACTION_CHANGE_LIVE_WALLPAPER);
        intent.putExtra(WallpaperManager.EXTRA_LIVE_WALLPAPER_COMPONENT,
                new ComponentName(context,MyWallpaper.class));
        context.startActivity(intent);

    }
 }

其中的MyEngine是內(nèi)部類，繼承wallpaper的engine

class MyEngine extends Engine {

        private MediaPlayer mediaPlayer;

        private BroadcastReceiver broadcastReceiver;

        @Override
        public void onCreate(SurfaceHolder surfaceHolder) {
            super.onCreate(surfaceHolder);

            IntentFilter intentFilter = new IntentFilter(MYWALLPAPER_ACTION);
            registerReceiver(broadcastReceiver = new BroadcastReceiver() {
                @Override
                public void onReceive(Context context, Intent intent) {
                    int action = intent.getIntExtra(KEY_ACTION, -1);
                    switch (action) {
                        case SOUND_OPEN:
                            mediaPlayer.setVolume(1.0f, 1.0f);
                            break;
                        case SOUND_CLOSE:
                            mediaPlayer.setVolume(0, 0);
                            break;

                    }
                }
            }, intentFilter);


        }

        @Override
        public void onDestroy() {
            unregisterReceiver(broadcastReceiver);
            super.onDestroy();

        }

        @Override
        public void onVisibilityChanged(boolean visible) {
            if (visible) {
                mediaPlayer.start();
            } else {
                mediaPlayer.pause();
            }
        }


        @Override
        public void onSurfaceCreated(SurfaceHolder holder) {
            super.onSurfaceCreated(holder);
            mediaPlayer = new MediaPlayer();
            mediaPlayer.setSurface(holder.getSurface());
            try{
                AssetManager aManager = getApplicationContext().getAssets();
                AssetFileDescriptor fileDescriptor = aManager.openFd("3sheng3shi.mp4");
                mediaPlayer.setDataSource(fileDescriptor.getFileDescriptor(), fileDescriptor.getStartOffset(), fileDescriptor.getLength());
                //循環(huán)播放我們的視頻
                mediaPlayer.setLooping(true);
                //默認(rèn)將音量設(shè)置成最小
                mediaPlayer.setVolume(0,0);
                mediaPlayer.prepare();
                mediaPlayer.start();
            }catch (IOException e){
                e.printStackTrace();
            }

        }

        @Override
        public void onSurfaceChanged(SurfaceHolder holder, int format, int width, int height) {
            super.onSurfaceChanged(holder, format, width, height);
        }

        @Override
        public void onSurfaceDestroyed(SurfaceHolder holder) {
            super.onSurfaceDestroyed(holder);
            //釋放，置空
            mediaPlayer.release();
            mediaPlayer = null;

        }
    }

3，最后就是在MainActivity中調(diào)用了

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        cbSound = (CheckBox) findViewById(R.id.cb_sound);
        //監(jiān)聽是否開啟聲音
        cbSound.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if(isChecked){
                    //開啟聲音
                    MyWallpaper.openSound(MainActivity.this);
                }else {
                    //關(guān)閉聲音
                    MyWallpaper.closeSound(MainActivity.this);
                }
            }
        });
    }

    //按鈕的點(diǎn)擊事件
    public void setDynamicDesk(View view){
        MyWallpaper.setDynamicWallPaper(this);
    }

總結(jié)：兩個(gè)類就實(shí)現(xiàn)了動(dòng)態(tài)桌面效果，很簡(jiǎn)單吧，自己可以動(dòng)手試試了，還是挺實(shí)用的；

本質(zhì)其實(shí)就是系統(tǒng)的一個(gè)api，有關(guān)wallpaper的更多內(nèi)容我就不詳細(xì)說明，下篇文章繼續(xù)寫這個(gè)項(xiàng)目的升級(jí)版！

[附上git源碼][2]

最后終極版本已提交企鵝寶求給五星好評(píng)點(diǎn)擊前往，以后的文章就是一步步拆分這個(gè)這應(yīng)用，包括服務(wù)器的搭建，數(shù)據(jù)添加！謝謝支持！