Non-Sticky & Sticky services are destroyed when I close app from task manager

Question

My application has a non-sticky service running, whenever I close the app from the task manager by swiping it, it also kills my service instantly. I am facing this issue only in Oppo phones.

Answer 1

On the Oppo F1 you need to add COL Reminder to the "Startup Manager" to allow running in the background.

Go to "Security Center". Click "Privacy Permissions" Then "Startup manager" And allow "COL Reminder" to run in the background.

---

If it is still not working please check this steps:

Go to settings > Battery and Storage > Battery Manager > Tap on "Power consumption details" > Optimize for excessive power consumption. Now uncheck all the apps you are facing issues with.

Answer 2

Many smartphones like Xiamoi, Oppo, Vivo kills background services even if it is running with flag START_STICKY to improve resource/battery optimization.

You can't set autostart to be enabled by-default programmatically.

Many solutions/suggestions have already been answered in many threads.
This one is taken from this thread, it takes user to respective auto-start/startup-manager/security-center, you can ask user to enable auto-start for your app by showing toast/alert, rest all depends on user:

try {
    Intent intent = new Intent();
    String manufacturer = android.os.Build.MANUFACTURER;
    if ("xiaomi".equalsIgnoreCase(manufacturer)) {
        intent.setComponent(new ComponentName("com.miui.securitycenter", "com.miui.permcenter.autostart.AutoStartManagementActivity"));
    } else if ("oppo".equalsIgnoreCase(manufacturer)) {
        intent.setComponent(new ComponentName("com.coloros.safecenter", "com.coloros.safecenter.permission.startup.StartupAppListActivity"));
    } else if ("vivo".equalsIgnoreCase(manufacturer)) {
        intent.setComponent(new ComponentName("com.vivo.permissionmanager", "com.vivo.permissionmanager.activity.BgStartUpManagerActivity"));
    } else if("oneplus".equalsIgnoreCase(manufacturer)) { 
        intent.setComponent(new ComponentName("com.oneplus.security", "com.oneplus.security.chainlaunch.view.ChainLaunchAppListAct‌​ivity")); }

    List<ResolveInfo> list = context.getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
    if  (list.size() > 0) {
        context.startActivity(intent);
    } 
} catch (Exception e) {
    Crashlytics.logException(e);
}

P.S. auto-start is enabled by-default for some apps like Facebook, Instagram and other Facebook family apps, they may have an agreement with device manufacturers.