android 花式保活

程序员文章站 2022-03-16 15:02:51

1.在看到19-24版本不可见前台serivce，就有一个疑问 25 以后不行？带这个疑问去看了下8.0 源码发现，可以做到不可见前台serivce，那怎么玩呢：2.先创建个service :public class LocalDaemonService extends Service { private static final String TAG = "LocalDaemonService"; public static final int NOTICE_ID =......

1.在看到19-24版本可以做到不可见前台serivce，就有一个疑问 25 以后不行？
带这个疑问去看了下源码发现，8.0可以做到不可见前台serivce，那怎么玩呢：

2.先创建个service :

public class LocalDaemonService extends Service {
    private static final String TAG = "LocalDaemonService";
    public static final int NOTICE_ID = 100;

    @Override
    public int onStartCommand(Intent intent3, int flags, int startId) {
        FixForeGroundService.fixService(NOTICE_ID, TAG, this);
        return START_STICKY;
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

}

重点在 FixForeGroundService:


public class FixForeGroundService extends Service {
    private static final String TAG = "FixForeGroundService";
    public static String FIX_SERVICE_ACTION = "FIX_SERVICE_ACTION";
    public static String FIX_SERVICE_ID = "FIX_SERVICE_ID";
    public static String FIX_SERVICE_CHANNEL = "FIX_SERVICE_CHANNEL";
    public static String FIX_SERVICE_DATA = "FIX_SERVICE_DATA";

    public static void fixService(int notifyId, String channel, Service service) {

        int sdkInt = Build.VERSION.SDK_INT;
// 这前面两个网上一大堆
        if (sdkInt < Build.VERSION_CODES.JELLY_BEAN_MR2) {
            service.startForeground(notifyId, new Notification());

        } else if (Build.VERSION_CODES.JELLY_BEAN_MR2 <= sdkInt && Build.VERSION_CODES.N_MR1 > sdkInt) {
            Notification notification = NotificationUtils.getNotification(service);
            Intent intent = new Intent(service, FixForeGroundService.class);
            intent.setAction(FIX_SERVICE_ACTION);
            intent.putExtra(FIX_SERVICE_ID, notifyId);
            intent.putExtra(FIX_SERVICE_DATA, notification);
            service.startForeground(notifyId, notification);
            service.startService(intent);


        }else if(Build.VERSION_CODES.N_MR1 == sdkInt){
            Log.d(TAG,"怎么适配25");

        }  else if (Build.VERSION_CODES.N_MR1 < sdkInt) {
           Log.d(TAG,"进来了 sdk="+sdkInt);
            Log.d(TAG,"进来了 service="+service.getClass().getCanonicalName());
        //这个才是重点 先不创建通道
       //  NotificationUtils.createNotificationChannelForSilent(service, channel);
            //创建一个没声音没震动没闪光通知 ，当然随便一个通知也行
            Notification build = NotificationUtils.getNotificationWithSilent(service, channel);
            service.startForeground(notifyId, build);
            Intent intent = new Intent(service, FixForeGroundService.class);
            intent.setAction(FIX_SERVICE_ACTION);
            intent.putExtra(FIX_SERVICE_CHANNEL, channel);
            service.startService(intent);

        }


    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public int onStartCommand(final Intent intent, int flags, int startId) {
     

        stopSelf();
        return START_NOT_STICKY;

    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        stopForeground(true);
    }
}

3.然后点击按钮启动service :

    public void startService(View v){

        if (Build.VERSION.SDK_INT>26){
            startForegroundService(new Intent(this, LocalDaemonService.class));
        }

    }

效果如下：

android 花式保活

查看adj:

android 花式保活

6不6 ，在荣耀 adnroid 10 也是这样的效果。怎么做的呢：

  在 NotificationManagerService 类中  
 void enqueueNotificationInternal(final String pkg, final String opPkg, final int callingUid,
            final int callingPid, final String tag, final int id, final Notification notification,
            int incomingUserId) {
     .....
        final NotificationChannel channel = mRankingHelper.getNotificationChannel(pkg,
                notificationUid, channelId, false /* includeDeleted */);
// 为null
        if (channel == null) {
            final String noChannelStr = "No Channel found for "
                    + "pkg=" + pkg
                    + ", channelId=" + channelId
                    + ", id=" + id
                    + ", tag=" + tag
                    + ", opPkg=" + opPkg
                    + ", callingUid=" + callingUid
                    + ", userId=" + userId
                    + ", incomingUserId=" + incomingUserId
                    + ", notificationUid=" + notificationUid
                    + ", notification=" + notification;
            Log.e(TAG, noChannelStr);
// 弹出吐司
            doChannelWarningToast("Developer warning for package \"" + pkg + "\"\n" +
                    "Failed to post notification on channel \"" + channelId + "\"\n" +
                    "See log for more details");
            return;
        }
.....

    }
有打印日志：2020-09-21 22:41:52.878 1788-1819/? E/NotificationService: No Channel found for pkg=com.test.keepalive, channelId=LocalDaemonService, id=100, tag=null, opPkg=com.test.keepalive, callingUid=10189, userId=0, incomingUserId=0, notificationUid=10189, notification=Notification(channel=LocalDaemonService pri=1 contentView=null vibrate=null sound=null defaults=0x0 flags=0x50 color=0x00000000 vis=PRIVATE)

虽然在8.0 会弹出吐司，但是已经提生adj了。目标版本：targetSdkVersion 26，大于26如果在9.0版本会报错误的.

4.如果是targetSdkVersion >26 ,怎么玩，贴出完整的Service ：

public class FixForeGroundService extends Service {
    private static final String TAG = "FixForeGroundService";
    public static String FIX_SERVICE_ACTION = "FIX_SERVICE_ACTION";
    public static String FIX_SERVICE_ID = "FIX_SERVICE_ID";
    public static String FIX_SERVICE_CHANNEL = "FIX_SERVICE_CHANNEL";
    public static String FIX_SERVICE_DATA = "FIX_SERVICE_DATA";

    public static void fixService(int notifyId, String channel, Service service) {

        int sdkInt = Build.VERSION.SDK_INT;
        if (sdkInt < Build.VERSION_CODES.JELLY_BEAN_MR2) {
            service.startForeground(notifyId, new Notification());

        } else if (Build.VERSION_CODES.JELLY_BEAN_MR2 <= sdkInt && Build.VERSION_CODES.N_MR1 > sdkInt) {
            Notification notification = NotificationUtils.getNotification(service);
            Intent intent = new Intent(service, FixForeGroundService.class);
            intent.setAction(FIX_SERVICE_ACTION);
            intent.putExtra(FIX_SERVICE_ID, notifyId);
            intent.putExtra(FIX_SERVICE_DATA, notification);
            service.startForeground(notifyId, notification);
            service.startService(intent);


        }else if(Build.VERSION_CODES.N_MR1 == sdkInt){
            Log.d(TAG,"怎么适配25");

        }  else if (Build.VERSION_CODES.N_MR1 < sdkInt) {
           Log.d(TAG,"进来了 sdk="+sdkInt);
            Log.d(TAG,"进来了 service="+service.getClass().getCanonicalName());
           NotificationUtils.createNotificationChannelForSilent(service, channel);
            Notification build = NotificationUtils.getNotificationWithSilent(service, channel);
            service.startForeground(notifyId, build);
            Intent intent = new Intent(service, FixForeGroundService.class);
            intent.setAction(FIX_SERVICE_ACTION);
            intent.putExtra(FIX_SERVICE_CHANNEL, channel);
            service.startService(intent);
        }
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public int onStartCommand(final Intent intent, int flags, int startId) {
        if (intent != null) {
            // 把通知渠道删除
            if (FIX_SERVICE_ACTION.equals(intent.getAction())) {
                int sdkVersion26 = Build.VERSION_CODES.O;
                if (Build.VERSION.SDK_INT >= sdkVersion26) {
                    Log.d(TAG, "隐藏service 26"+intent.toString());
                    Handler handler=new Handler(getMainLooper());
                    handler.postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            String channelId = intent.getStringExtra(FIX_SERVICE_CHANNEL);
                            if (!TextUtils.isEmpty(channelId)) {
                                NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
                                notificationManager.deleteNotificationChannel(channelId);
                            }
                        }
                    },30);


                }

            }


        }
        stopSelf();
        return START_NOT_STICKY;

    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        stopForeground(true);
    }
}

结果如下：

android 花式保活

5、7.1由于没有这channel 概念，找不到合适入口，其他入口只是给系统应用用的，那么7.1 怎么来玩呢？

5.1 可以检测悬浮权限有弹出悬浮：玩法跟一像素一样的

悬浮窗提升adj 从11提升3

The system will adjust the importance of processes with this window type to reduce the chance of the low-memory-killer killing them.
5.2 检测通知权限，没有通知权限，直接创建前台service 就完事了。

ActiveServices 类  
private void setServiceForegroundInnerLocked(ServiceRecord r, int id,
            Notification notification, int flags) {   


....
// 7.1 没有这些判断的
这是8.0
switch (mode) {
                    case AppOpsManager.MODE_ALLOWED:
                        break;
                    case AppOpsManager.MODE_IGNORED:
                        Slog.w(TAG, "Instant app " + r.appInfo.packageName
                                + " does not have permission to create foreground services"
                                + ", ignoring.");
                        return;
                    case AppOpsManager.MODE_ERRORED:
                        throw new SecurityException("Instant app " + r.appInfo.packageName
                                + " does not have permission to create foreground services");
                    default:
.......
}
.....
}

5.3 上面都不满足，就搞音乐service吧.
ps :下文，强力的拉活手段效果如下：
华为荣耀 android 10

android 花式保活

本文地址：https://blog.csdn.net/qq_21727627/article/details/108718154

相关标签： android 保活 android 保活拉活

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android 花式保活

1.在看到19-24版本可以做到不可见前台serivce，就有一个疑问 25 以后不行？
带这个疑问去看了下源码发现，8.0可以做到不可见前台serivce，那怎么玩呢：

查看adj:

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Android开发app保活，最小化可唤起界面，强杀可再次弹起（已兼容7.0）

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视频监控平台GB28181：媒体流保活机制

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android 花式保活

1.在看到19-24版本可以做到不可见前台serivce， 就有一个疑问 25 以后不行？ 带这个疑问去看了下 源码发现，8.0可以做到不可见前台serivce，那怎么玩呢：

查看adj:

C# 定时器保活机制引起的内存泄露问题解决

Android应用保活实践详解

Android后台保活4.0~8.0系统

Android保活爬坑 - 降低oom_adj的值、唤醒app方式

tcp长连接和保活时间

详解Android 8.0以上系统应用如何保活

Android开发app保活，最小化可唤起界面，强杀可再次弹起（已兼容7.0）

Android 添加白名单实现保活

视频监控平台GB28181：媒体流保活机制

android进程保活实现方法

1.在看到19-24版本可以做到不可见前台serivce，就有一个疑问 25 以后不行？
带这个疑问去看了下源码发现，8.0可以做到不可见前台serivce，那怎么玩呢：