Android 应用保活APP常驻内存研究方案

前言

 

一、常见的应用保活方法 

1、  监听广播方式

2、 提高Service的优先级

3、 双service拉起

3、双进程拉起

二、多进程音频保活方案

综上所述，上面的方法只是提高了APP后台运行存留能力，在用户不主动清理或强杀的情况下，测试APP的保活效果还是非常不错的。但是，"咕咚"在点击一键清理时奇妙的活了下来，原因是在后台循环播放一段无声音乐。如下图：

代码如下：

public class PlayerMusicService extends Service {
    private final static String TAG = "PlayerMusicService";
    private MediaPlayer mMediaPlayer;
    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }
    @Override
    public void onCreate() {
        super.onCreate();
        mMediaPlayer = MediaPlayer.create(getApplicationContext(), R.raw.silent);
        mMediaPlayer.setLooping(true);
    }
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                startPlayMusic();
            }
        }).start();
        return START_STICKY;//注释1
    }
    private void startPlayMusic(){
        if(mMediaPlayer != null){
            mMediaPlayer.start();
        }
    }
    private void stopPlayMusic(){
        if(mMediaPlayer != null){
            mMediaPlayer.stop();
        }
    }
    @Override
    public void onDestroy() {
        super.onDestroy();
        stopPlayMusic();
        // 注释2
        Intent intent = new Intent(getApplicationContext(),PlayerMusicService.class);
        startService(intent);
    }
}

AndroidManifest.xml

<service android:name=".service.PlayerMusicService"
          android:enabled="true"
          android:exported="true"
          android:process=":music_service"/>//多进程

开启后台播放音频服务，此方案在各机型测试情况如下：
1、 华为Mate8(7.0) ，一键清理依然存活，在置于后台的黑屏模式下存活12小时以上；但是如果用户只选择清理此应用也会被杀死，这与"咕咚"保活效果一致。
2、三星C9(6.0)，一键清理最近应用，成功保活；
3、华为4X(6.0)：一键清理最近应用，成功保活；
4、三星Note4(5.0)：一键清理最近应用，成功保活；

 

三、通过JobScheduler方案

概述

原理

新建类：AliveJobService.java

@TargetApi(21)
public class AliveJobService extends JobService {
    private static final int MESSAGE_ID_TASK = 0x01;
    // 告知编译器，这个变量不能被优化
    private volatile static Service mKeepAliveService = null;
    public static boolean isJobServiceAlive(){
        return mKeepAliveService != null;
    }
    private Handler mHandler = new Handler(new Handler.Callback() {
        @Override
        public boolean handleMessage(Message msg) {
            if(SystemUtils.isAPPALive(getApplicationContext(), Contants.PACKAGE_NAME)){
                //APP活着的
            }else{
                Intent intent = new Intent(getApplicationContext(), SportsActivity.class);
                intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                startActivity(intent);
                //APP被杀死后重启
            }
            jobFinished( (JobParameters) msg.obj, false ); // 通知系统任务执行结束
            return true;
        }
    });
    @Override
    public boolean onStartJob(JobParameters params) {
        mKeepAliveService = this;
        Message msg = Message.obtain(mHandler, MESSAGE_ID_TASK, params);
        mHandler.sendMessage(msg);
        // 返回false，系统假设这个方法返回时任务已经执行完毕；
        // 返回true，系统假定这个任务正要被执行
        return true;
    }
    @Override
    public boolean onStopJob(JobParameters params) {
        mHandler.removeMessages(MESSAGE_ID_TASK);
        return false;
    }
}
 

JobScheduler管理类执行系统任务：JobSchedulerManager.java

public class JobSchedulerManager {
    private static final int JOB_ID = 1;
    private static JobSchedulerManager mJobManager;
    private JobScheduler mJobScheduler;
    private static Context mContext;

    private JobSchedulerManager(Context ctxt){
        this.mContext = ctxt;
        mJobScheduler = (JobScheduler)ctxt.getSystemService(Context.JOB_SCHEDULER_SERVICE);
    }
    public final static JobSchedulerManager getJobSchedulerInstance(Context ctxt){
        if(mJobManager == null){
            mJobManager = new JobSchedulerManager(ctxt);
        }
        return mJobManager;
    }
    @TargetApi(21)
    public void startJobScheduler(){
        if(AliveJobService.isJobServiceAlive() || isBelowLOLLIPOP()){
            return;        // 如果JobService已经启动或API<21，返回
        }
        JobInfo.Builder builder = new JobInfo.Builder(JOB_ID,new ComponentName(mContext, AliveJobService.class));
        builder.setPeriodic(3000); // 设置每3秒执行一下任务
        builder.setPersisted(true);  // 设置设备重启时，执行该任务
        builder.setRequiresCharging(true); // 当插入充电器，执行该任务
        JobInfo info = builder.build();
        mJobScheduler.schedule(info);
    }
    @TargetApi(21)
    public void stopJobScheduler(){
        if(isBelowLOLLIPOP())
            return;
        mJobScheduler.cancelAll();
    }
    private boolean isBelowLOLLIPOP(){
        return Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP; // API< 21
    }
}

记得添加权限： android:permission="android.permission.BIND_JOB_SERVICE"

Doze休眠模式

测试结果
    三星C9(6.0)：一键清理和强制停止(force stop)都能够唤醒APP；
    三星Note4(5.0)：一键清理和强制停止(force stop)都能够唤醒APP；
    华为荣耀4X(6.0)：一键清理和强制停止(force stop)都能够唤醒APP；
    华为Mate8(7.0)：失效(可能被华为屏蔽了)；

四、华为推送SDK

MyHwPushReceiver.java

public class MyHwPushReceiver extends PushEventReceiver{
    private final static String TAG = "MyHwPushReceiver";
    @Override
    public void onToken(Context context, String token, Bundle bundle) {
        Log.i(TAG,"连接到华为推送服务器，token="+token);
    }
    @Override
    public boolean onPushMsg(Context context, byte[] msgBytes, Bundle bundle) {
        Log.i(TAG,"接收透传消息："+new String(msgBytes,"UTF-8"));
        // 启动应用
        return false;
    }
    @Override
    public void onPushState(Context context, boolean connectState) {
        Log.i(TAG,"是否连接到华为推送服务器："+(connectState?"connected":"disconnected"));
    }

    @Override
    public void onEvent(Context context, Event event, Bundle bundle) {
        //点击打开通知栏
        super.onEvent(context, event, bundle);
    }
}

HwPushManager.java

 public class HwPushManager {
    private static HwPushManager mPushManager;
    private Context mContext;
    private HwPushManager(Context mContext){
        this.mContext = mContext;
    }
    public static  HwPushManager getInstance(Context mContext){
        if(mPushManager == null){
            mPushManager = new HwPushManager(mContext);
        }
        return mPushManager;
    }
    public void startRequestToken(){
        //向服务器请求Token
        PushManager.requestToken(mContext);
    }
        //是否接收服务器传递过来的透传消息
    public void isEnableReceiveNormalMsg(boolean isEnable){
        PushManager.enableReceiveNormalMsg(mContext,isEnable);
    }
        //是否接收自呈现消息
    public  void isEnableReceiverNotifyMsg(boolean isEnable){
        PushManager.enableReceiveNotifyMsg(mContext,isEnable);
    }
}

 AndroidManifest.xml

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
  <!-- 第三方相关 :接收Push消息（注册、Push消息、Push连接状态、标签，LBS上报结果）广播 -->
        <receiver android:name=".receiver.MyHwPushReceiver" >
            <intent-filter>
                <action android:name="com.huawei.android.push.intent.REGISTRATION" />
                <action android:name="com.huawei.android.push.intent.RECEIVE" />
                <action android:name="com.huawei.android.push.intent.CLICK" />
                <action android:name="com.huawei.intent.action.PUSH_STATE" />
                <action android:name="com.huawei.android.push.plugin.RESPONSE" />
            </intent-filter>
            <meta-data android:name="CS_cloud_ablitity" android:value="@string/hwpush_ability_value"/>
        </receiver>
        <!-- PushSDK:PushSDK接收外部请求事件入口 -->
        <receiver
            android:name="com.huawei.android.pushagent.PushEventReceiver"
            android:process=":pushservice" >
            <intent-filter>
             <action android:name="com.huawei.android.push.intent.REFRESH_PUSH_CHANNEL" />
                <action android:name="com.huawei.intent.action.PUSH" />
                <action android:name="com.huawei.intent.action.PUSH_ON" />
                <action android:name="com.huawei.android.push.PLUGIN" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.PACKAGE_ADDED" />
                <action android:name="android.intent.action.PACKAGE_REMOVED" />
                <data android:scheme="package" />
            </intent-filter>
        </receiver>
        <receiver
            android:name="com.huawei.android.pushagent.PushBootReceiver"
            android:process=":pushservice" >
            <intent-filter>
                <action android:name="com.huawei.android.push.intent.REGISTER" />
                <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
            </intent-filter>
            <meta-data
                android:name="CS_cloud_version"
                android:value="\u0032\u0037\u0030\u0035" />
        </receiver>
        <!-- PushSDK:Push服务 -->
        <service
            android:name="com.huawei.android.pushagent.PushService"
            android:process=":pushservice" >
        </service>
        <!-- locale|layoutDirection 切换语言后不重新创建activity -->
        <activity
            android:name="com.huawei.android.pushselfshow.richpush.RichPushActivity"
            android:process=":pushservice"
            android:theme="@style/hwpush_NoActionBar"
            android:configChanges="orientation|screenSize|locale|layoutDirection"
            android:screenOrientation="portrait">
            <meta-data android:name="hwc-theme"
                android:value="androidhwext:style/Theme.Emui"/>
            <intent-filter>
                <action android:name="com.huawei.android.push.intent.RICHPUSH" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
       android:name="com.huawei.android.pushselfshow.permission.RequestPermissionsActivity"
            android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.NoActionBar"
            android:launchMode="singleTop"
            android:screenOrientation="portrait"
            android:configChanges="orientation|screenSize|locale|layoutDirection"
            android:exported="false">
        </activity>

测试结果

 

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参考链接：

https://blog.csdn.net/andrexpert/article/details/75174586

https://blog.csdn.net/andrexpert/article/details/75045678