Develop Reference

WIFI not getting open when application in KIOSK Mode. Wear OS

I am developing a KIOSK Mode stand alone application for Wear OS(Samsung Watch 4, Wear OS 3.5). For KIOSK mode I am using device owner permission using ADB and used device [DevicePolicyManager][1] class to handle hardware button and status bar etc.
My Issue is, I am not able to open System WIFI settings which navigate to outside of KIOSK mode.
Just for your information I can open system bluetooth settings without disabling KIOSK mode. One more information: case 3 code work perfectly if your KIOSK mode is disable
I tried:
Case1.
context.startActivity(Intent("com.google.android.clockwork.settings.connectivity.wifi.ADD_NETWORK_SETTINGS"))
I can see something gets opened and closed automatically.
Case 2.
val intent = Intent(Settings.ACTION_WIFI_SETTINGS)
intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
intent.addCategory(Intent.CATEGORY_LAUNCHER)
startActivity(intent)
Case 3.
startActivity(Intent(Settings.ACTION_WIFI_SETTINGS))
If any one have any idea or workaround. Much appreciate your inputs!

Finally I achieved it by whitelisted packagename.
devicePolicyManager!!.setLockTaskPackages(deviceAdmin, arrayOf("our.own.package.name","com.google.android.apps.wearable.settings"))
After whitelisted in KIOSK mode. now it will work!
startActivity(Intent(Settings.ACTION_WIFI_SETTINGS))

How to prevent users from turning off GPS, Wifi and Bluetooth?

I'm developing a tracking application and I need to prevent users from turning off the basic sensors used to determine the location. I can not modify the devices ROM or have root access (or at least it would be very desirable to had not), but I thought of using the Device Administration API to perform these functions through the Profile Owner or Device Owner modes. I'm basically looking for a method to block these functions in Android settings.
I'm unsure about whether this is possible and how to do it, I have not found examples in GitHub for applications that have implemented this. Could anyone give me a light, some example or specific documentation?
I tried to follow these three documentations, without success in finding a solution to this specific feature:
https://source.android.com/devices/tech/admin
https://developer.android.com/guide/topics/admin/device-admin
https://developers.google.com/android/management/introduction
This is an excerpt from what I've been trying:
setUserRestriction(UserManager.DISALLOW_CONFIG_WIFI, true);
setUserRestriction(UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS, active);
setUserRestriction(UserManager.DISALLOW_CONFIG_BLUETOOTH, active);
private void setUserRestriction(String restriction, boolean disallow){
if (disallow) {
mDevicePolicyManager.addUserRestriction(mAdminComponentName, restriction);
} else {
mDevicePolicyManager.clearUserRestriction(mAdminComponentName,
restriction);
}
}
DISALLOW_CONFIG_BLUETOOTH
Added in API level 18
public static final String DISALLOW_CONFIG_BLUETOOTH
Specifies if a user is disallowed from configuring bluetooth. This does not restrict the user from turning bluetooth on or off. The default value is false.
This restriction doesn't prevent the user from using bluetooth. For disallowing usage of bluetooth completely on the device, use DISALLOW_BLUETOOTH.
This restriction has no effect in a managed profile.
Key for user restrictions.
Type: Boolean

You cannot prevent them from turning GPS, WIFI and Bluetooth off. What you can do is have an implementation as below or use this library.
https://github.com/KI-labs/gps-permission-checks-livedata

You can't, obviously for security reasons. If you want to achive something like that you'll probably need to modify the devices ROM. You should create a BroadcastReceiver and keep tracking Internet and Bluetooth connection changes, than you can properly handle it when user disconnect them pausing the service, showing a dialog, finishing the application or whatever you need to do.
It would be pretty weird if an app could have some control of user settings, imagine if you install an app, then suddently you can't disable wi-fi anymore until you unistall it. You can't do that for a good reason

Preventing bluetooth/wifi disconnection will also prevent usage of aircraft mode, that is a security issue bounded in the ROM and not overridable.
As suggested above your option is to monitor for wifi/bluetooth/gps deactivations and prompt the user with an alert.
By the way, GPS is not affected by aircraft mode, as it's a pure receiver and doesn't make active transmissions. In that case GPS will be always active and collecting informations (if active and the phone is not in power save mode, aka relying on wifi location). I suggest you to check if the user activated aircraft mode, in order to be less annoying with your alerts (air mode is mandatory in same situations, and should be considered "legal" by your application, and maybe less critical than an user voluntary disconnection

In simple words, You cannot, but you can listen to when wifi is enabled/connected, and you can prompt a dialog stating the reason.
This way it gives the user a more concise grip on what needs to be done.
Just a suggestion

How to lock LTE_ONLY mode?

I am working on an application that has a requirement to lock the RAT on devices. I just want to lock only two modes i.e. "LTE Only" or "WCDMA Only".
We can do this without using an app from phone dial app by running ##4636## and choosing Phone Information and the "LTE Only" or "WCDMA Only".
I have also tried QXDM to set these values on NV Item 10 but it doesn't persist on reboot. So if some one have good knowledge of QXDM and share that knowledge then it would be really helpful.
My final goal is to do this from Android application that has root access.

Allow user to access wifi settings without giving free reign

We are developing a locked down "kiosk-style" Android app on a stock Samsung tablet, which is mounted in customer vehicles. We would like to be able to allow customers to edit their wifi settings, without giving them access to the rest of the Settings app (e.g. Launcher, accounts, etc)
We have been able to launch the Wifi Settings activity, but it allows the user to go into other areas.
I'm not sure whether it's possible to create a custom interface for connecting to wifi, but even if it were possible, this seems fragile and a lot of work for something quite simple.
Is there any way to solve this well?

I would create a device policy controller app that is provisioned on the device as a device owner using Android Enterprise (Android for Work) APIs.
https://developers.google.com/android/work/dpc/build-dpc
As a device owner, you can set your app in lock task mode which is generally used for kiosks.
https://developer.android.com/work/cosu.html
Then, you can set user restrictions:
addUserRestriction api
user restrictions list
The user restrictions don't cover everything in the settings app, but the coverage is pretty good.
Then I would provision it using NFC or QR code reader from the Google Setup Wizard welcome screen.
https://github.com/googlesamples/android-NfcProvisioning
You might want to also look at existing open source EMM/MDM implementations that already exist such as WSO2.
Other references:
How to enable task locking in Android 5.0 production devices
How to make sure there is only one app

I was also working on Kiosk Type applications and we have to give options for Change wifi and Display Settings So we have used these commands on Button click for Wifi And Display
Settings
btnWifiSetting.setOnClickListener {
startActivityForResult( Intent(android.provider.Settings.ACTION_WIFI_SETTINGS), 0);
}
And For Display Setting
btnDisplay.setOnClickListener {
startActivityForResult(Intent(android.provider.Settings.ACTION_DISPLAY_SETTINGS),0)
}
And you can also check the full list of Available Commands here
https://ourcodeworld.com/articles/read/318/how-to-open-android-settings-programmatically-with-java

try LineAgeOS
https://lineageos.org/
Your requirement needs to access OS System level, this way you have access and customize the WIFI settings before releasing the phone itself

can you try this way.
WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
if (wifiManager.isWifiEnabled()) {
wifiManager.setWifiEnabled(false);
Tools_WiFi.setImageResource(R.drawable.tool_wifi_off);
} else {
wifiManager.setWifiEnabled(true);
Tools_WiFi.setImageResource(R.drawable.tool_wifi_on);
}

You can try this:
startActivityForResult(new Intent(Settings.ACTION_WIFI_SETTINGS), 0);
Hope it helps you.

.DataManagerAppPreferenceActivity of defy in devices others

What's Intent I can make my app open Settings for enabled and disabled Data Package?
I try ACTION_DATA_ROAMING_SETTINGS but I'm wrong, because don't make the that I want.
I need just enabled and disabled data package...
The mobile that I use is motorola defy, and the Intent that I find that make the that I want is: com.motorola.blur.datamanager.app.DataManagerAppPreferenceActivity. But I need of native Intent of Android, because my app will run in device others.