starting background service while phone turn on with example code

Question

I need an app which will run always in the background and apps will start while phone is turn on. Please help me with example code. I already tried several code but it run on background while pressing button after start the apps

Answer 1

You need to receive BOOT_COMPLETED of the phone, then start the service. Follow the following steps

Step 1: create your service

public class myService extends Service{
    public  myService(){}
    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }
    @Override
    public void onCreate() {
        super.onCreate();
    }
}

Step 2: Create your boot receiver

public class BootReceiver extends BroadcastReceiver {

    public void onReceive(final Context context, Intent intent) {
        Intent i = new Intent(context, RemindersService.class);
        context.startService(i);    
    }
}

Step 3: add them to manifest inside application

    <service
        android:name=".services.RemindersService"
        android:enabled="true"
        android:exported="true" />
    <receiver
        android:name=".services.BootReceiver"
        android:enabled="true"
        android:exported="true">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
            <action android:name="android.intent.action.QUICKBOOT_POWERON" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </receiver>

Step 4: add permission in manifest

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

Thats it. Happy coding. Please note that in android Oreo, you will want to start service as foreground

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        context.startForegroundService(i);
    }