安卓APP保活--十种方案
2024-04-23 08:26:35
安卓APP保活–十种方案
- Activity(1像素)：
- 播放无声音乐：
- 前台服务：
- 广播：
- 利用系统机制：
- 账户同步：
- JobScheduler：
- 双进程守护:
- WorkManager:
- 厂商白名单:
一、Activity(1像素)
public class Activity1 extends AppCompatActivity {@Overrideprotected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_1);Window window = getWindow();window.setGravity(Gravity.LEFT|Gravity.TOP);WindowManager.LayoutParams layoutParams = window.getAttributes();layoutParams.width = 1;layoutParams.height = 1;layoutParams.x = 1;layoutParams.y = 1;window.setAttributes(layoutParams);}
}
二、播放无声音乐
三、前台服务
public class ForegroundService extends Service {private final static int SERVICE_ID = 1;@Nullable@Overridepublic IBinder onBind(Intent intent) {return null;}@Overridepublic void onCreate() {super.onCreate();if (Build.VERSION.SDK_INT<Build.VERSION_CODES.JELLY_BEAN_MR2){//4.3以下startForeground(SERVICE_ID,new Notification());}else if (Build.VERSION.SDK_INT<Build.VERSION_CODES.O){//7.0以下startForeground(SERVICE_ID,new Notification());//删除通知栏startService(new Intent(this,InnerService.class));}else {//8.0以上NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);//NotificationManager.IMPORTANCE_MIN 通知栏消息的重要级别 最低，不让弹出//IMPORTANCE_MIN 前台时，在阴影区能看到，后台时 阴影区不消失，增加显示 IMPORTANCE_NONE时 一样的提示//IMPORTANCE_NONE app在前台没有通知显示，后台时有NotificationChannel channel = new NotificationChannel("channel", "keep", NotificationManager.IMPORTANCE_NONE);if (notificationManager!=null){notificationManager.createNotificationChannel(channel);Notification notification = new Notification.Builder(this, "channel").build();startForeground(SERVICE_ID,notification);}}}private static class InnerService extends Service{@Nullable@Overridepublic IBinder onBind(Intent intent) {return null;}@Overridepublic void onCreate() {super.onCreate();Log.d(KeepAliveApp.TAG, "onCreate: ");startForeground(SERVICE_ID,new Notification());stopSelf();}}
}
四、广播
在发生特定系统事件时，系统会发出广播，通过在 AndroidManifest 中静态注册对应的广播监听器，即可在发生响应事件时拉活。
但是从android 7.0开始，对广播进行了限制，而且在8.0更加严格https://developer.android.google.cn/about/versions/oreo/background.html#broadcasts
可静态注册广播列表： https://developer.android.google.cn/guide/components/broadcast-exceptions.html
五、利用系统机制
1.START_STICKY：
“粘性”。如果service进程被kill掉，保留service的状态为开始状态，但不保留递送的intent对象。随后系统会尝试重新创建service，由于服务状态为开始状态，所以创建服务后一定会调用onStartCommand(Intent,int,int)方法。如果在此期间没有任何启动命令被传递到service，那么参数Intent将为null。
2.START_NOT_STICKY：
“非粘性的”。使用这个返回值时，如果在执行完onStartCommand后，服务被异常kill掉，系统不会自动重启该服务。
3.START_REDELIVER_INTENT：
重传Intent。使用这个返回值时，如果在执行完onStartCommand后，服务被异常kill掉，系统会自动重启该服务，并将Intent的值传入。
4. START_STICKY_COMPATIBILITY：
START_STICKY的兼容版本，但不保证服务被kill后一定能重启。
5.只要 targetSdkVersion 不小于5，就默认是 START_STICKY。 但是某些ROM 系统不会拉活。并且经过测试，Service 第一次被异常杀死后很快被重启，第二次会比第一次慢，第三次又会比前一次慢，一旦在短时间内 Service 被杀死4-5次，则系统不再拉起。
public class StickyService extends Service {@Nullable@Overridepublic IBinder onBind(Intent intent) {return null;}@Overridepublic int onStartCommand(Intent intent, int flags, int startId) {return super.onStartCommand(intent, flags, startId);}
}
六、账户同步
/*** 创建 可添加用户*/
public class AuthenticationService extends Service {private AccountAuthenticator accountAuthenticator;@Nullable@Overridepublic IBinder onBind(Intent intent) {return accountAuthenticator.getIBinder();}@Overridepublic void onCreate() {super.onCreate();accountAuthenticator = new AccountAuthenticator(this);}public static class AccountAuthenticator extends AbstractAccountAuthenticator {public AccountAuthenticator(Context context) {super(context);}@Overridepublic Bundle editProperties(AccountAuthenticatorResponse response, String accountType) {return null;}@Overridepublic Bundle addAccount(AccountAuthenticatorResponse response, String accountType, String authTokenType, String[] requiredFeatures, Bundle options) throws NetworkErrorException { return null; }@Overridepublic Bundle confirmCredentials(AccountAuthenticatorResponse response, Account account, Bundle options) throws NetworkErrorException {return null;}@Overridepublic Bundle getAuthToken(AccountAuthenticatorResponse response, Account account,String authTokenType, Bundle options) throws NetworkErrorException {return null;}@Overridepublic String getAuthTokenLabel(String authTokenType) {return null;}@Overridepublic Bundle updateCredentials(AccountAuthenticatorResponse response, Account account,String authTokenType, Bundle options) throws NetworkErrorException {return null;}@Overridepublic Bundle hasFeatures(AccountAuthenticatorResponse response, Account account, String[] features) throws NetworkErrorException {return null;}}
}
public class AccountHelper {private static final String TAG = "AccountHelper";private static final String ACCOUNT_TYPE = "com.yxl.tool.account";private static final String AUTHORITY = "com.yxl.tool.provider";/*** 添加账号** @param context*/public static void addAccount(Context context) {AccountManager accountManager = (AccountManager) context.getSystemService(Context.ACCOUNT_SERVICE);// 获得此类型的账户// 需要增加权限 GET_ACCOUNTSAccount[] accounts = accountManager.getAccountsByType(ACCOUNT_TYPE);if (accounts.length > 0) {Log.e(TAG, "账户已存在");return;}Account account = new Account("yxl", ACCOUNT_TYPE);// 给这个账户类型添加一个账户// 需要增加权限 AUTHENTICATE_ACCOUNTSaccountManager.addAccountExplicitly(account, "tool", new Bundle());}/*** 设置账户自动同步*/public static void autoSync() {Account account = new Account("yxl", ACCOUNT_TYPE);// 下面三个都需要同一个权限 WRITE_SYNC_SETTINGS// 设置同步ContentResolver.setIsSyncable(account, AUTHORITY, 1);// 自动同步ContentResolver.setSyncAutomatically(account, AUTHORITY, true);// 设置同步周期ContentResolver.addPeriodicSync(account, AUTHORITY, new Bundle(), 1);}
}
public class SyncService extends Service {private SyncAdapter mSyncAdapter;private static final String TAG = "SyncService";@Nullable@Overridepublic IBinder onBind(Intent intent) {return mSyncAdapter.getSyncAdapterBinder();}@Overridepublic void onCreate() {super.onCreate();mSyncAdapter = new SyncAdapter(getApplicationContext(), true);}public static class SyncAdapter extends AbstractThreadedSyncAdapter {public SyncAdapter(Context context, boolean autoInitialize) {super(context, autoInitialize);}@Overridepublic void onPerformSync(Account account, Bundle extras, String authority, ContentProviderClient provider, SyncResult syncResult) {Log.e(TAG, "同步账户");//与互联网 或者 本地数据库同步账户}}
}
public class SyncProvider extends ContentProvider {@Overridepublic boolean onCreate() {return false;}@Nullable@Overridepublic Cursor query(@NonNull Uri uri, @Nullable String[] projection, @Nullable String selection,@Nullable String[] selectionArgs, @Nullable String sortOrder) {return null;}@Nullable@Overridepublic String getType(@NonNull Uri uri) {return null;}@Nullable@Overridepublic Uri insert(@NonNull Uri uri, @Nullable ContentValues values) {return null;}@Overridepublic int delete(@NonNull Uri uri, @Nullable String selection, @Nullable String[] selectionArgs) {return 0;}@Overridepublic int update(@NonNull Uri uri, @Nullable ContentValues values, @Nullable String selection,@Nullable String[] selectionArgs) {return 0;}
}
七、JobScheduler
JobScheduler允许在特定状态与特定时间间隔周期执行任务。
可以利用它的这个特点完成保活的功能,效果即开启一个定时器，与普通定时器不同的是其调度由系统完成。
同样在某些ROM可能并不能达到需要的效果。
public class ToolJobService extends JobService {@Overridepublic boolean onStartJob(JobParameters jobParameters) {if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.O){startJob(this);}return false;}private void startJob(Context context) {JobScheduler jobScheduler = (JobScheduler) context.getSystemService(JOB_SCHEDULER_SERVICE);JobInfo.Builder builder = new JobInfo.Builder(27,new ComponentName(context.getPackageName(), ToolJobService .class.getName())).setPersisted(true);if (Build.VERSION.SDK_INT<Build.VERSION_CODES.N){builder.setPeriodic(1000);}else {builder.setMinimumLatency(1000);}jobScheduler.schedule(builder.build());}@Overridepublic boolean onStopJob(JobParameters jobParameters) {return false;}
}
八、双进程守护
AIDL+JobScheduler 实现
// IMyAidlInterface.aidl
package com.yxl.tool;// Declare any non-default types here with import statementsinterface IMyAidlInterface {}
public class LocalService extends Service {private static final String TAG = "LocalService ";private ServiceConnection serviceConnection;private static final int SERVICE_ID = 16;private MyBinder myBinder;class MyBinder extends IMyAidlInterface.Stub {}@Nullable@Overridepublic IBinder onBind(Intent intent) {return myBinder;}@Overridepublic void onCreate() {super.onCreate();myBinder = new MyBinder();serviceConnection = new MyServiceConnection();// 让服务变成前台服务startForeground(SERVICE_ID, new Notification());// 如果18以上的设备 使用相同id再次启动一个前台服务 然后结束这个服务if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {startService(new Intent(this, InnerService.class));}}@Overridepublic int onStartCommand(Intent intent, int flags, int startId) {bindService(new Intent(this, RemoteService.class),serviceConnection, BIND_AUTO_CREATE);return super.onStartCommand(intent, flags, startId);}class MyServiceConnection implements ServiceConnection {// 服务连接后回调@Overridepublic void onServiceConnected(ComponentName name, IBinder service) {}// 连接中断后回调@Overridepublic void onServiceDisconnected(ComponentName name) {Log.e(TAG, "RemoteService 可能被杀死了，拉活");startService(new Intent(LocalService.this, RemoteService.class));bindService(new Intent(LocalService.this, RemoteService.class),serviceConnection, BIND_AUTO_CREATE);}}public static class InnerService extends Service {@Overridepublic void onCreate() {super.onCreate();startForeground(SERVICE_ID, new Notification());stopSelf();}@Nullable@Overridepublic IBinder onBind(Intent intent) {return null;}}
}
public class RemoteService extends Service {private static final String TAG = "RemoteService ";private ServiceConnection serviceConnection;private static final int SERVICE_ID = 16;private MyBinder myBinder;class MyBinder extends IMyAidlInterface.Stub {}@Nullable@Overridepublic IBinder onBind(Intent intent) {return myBinder;}@Overridepublic void onCreate() {super.onCreate();myBinder = new MyBinder();serviceConnection = new MyServiceConnection();// 让服务变成前台服务startForeground(SERVICE_ID, new Notification());// 如果18以上的设备 使用相同id再次启动一个前台服务 然后结束这个服务if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {startService(new Intent(this, InnerService.class));}}@Overridepublic int onStartCommand(Intent intent, int flags, int startId) {bindService(new Intent(this, LocalService.class),serviceConnection, BIND_AUTO_CREATE);return super.onStartCommand(intent, flags, startId);}class MyServiceConnection implements ServiceConnection {// 服务连接后回调@Overridepublic void onServiceConnected(ComponentName name, IBinder service) {}// 连接中断后回调@Overridepublic void onServiceDisconnected(ComponentName name) {Log.e(TAG, "LocalService 可能被杀死了，拉活");startService(new Intent(RemoteService.this, LocalService.class));bindService(new Intent(RemoteService.this, LocalService.class),serviceConnection, BIND_AUTO_CREATE);}}public static class InnerService extends Service {@Overridepublic void onCreate() {super.onCreate();startForeground(SERVICE_ID, new Notification());stopSelf();}@Nullable@Overridepublic IBinder onBind(Intent intent) {return null;}}
}
ToolJobService.java
@Overridepublic boolean onStartJob(JobParameters params) {Log.e(TAG, "onStartJob");// 如果7.0以上 轮询if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {startJob(this);}boolean isLocal = Utils.isRunningService(this, LocalService.class.getName());boolean isRemote = Utils.isRunningService(this, RemoteService.class.getName());if (!isLocal || !isRemote) {startService(new Intent(this, LocalService.class));startService(new Intent(this, RemoteService.class));}return false;}
public class Utils {public static boolean isRunningService(Context context, String name) {ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);List<ActivityManager.RunningServiceInfo> runningServices = am.getRunningServices(100);for (ActivityManager.RunningServiceInfo info : runningServices) {if (TextUtils.equals(info.service.getClassName(), name)) {return true;}}return false;}}
九、WorkManager
public class KeepLiveWork extends Worker {public KeepLiveWork(@NonNull Context context, @NonNull WorkerParameters workerParams) {super(context, workerParams);}@NonNull@Overridepublic Result doWork() {Log.e("KeepLive", "doWork: ");ToolJobService.startJob(getApplicationContext());return Result.success();}
}
添加任务
OneTimeWorkRequest oneTimeWorkRequest = new OneTimeWorkRequest.Builder(KeepLiveWork.class).setInitialDelay(10, TimeUnit.SECONDS).build();WorkManager.getInstance(this).enqueue(oneTimeWorkRequest);
十、厂商白名单
终极保活，需要厂商定制
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