How to connect Bluetooth devices without user interaction for pairing and connect via secure method too? And also want to know about android.permission.BLUETOOTH_PRIVILEDGE permission.
The only way to achieve this is use the BLUETOOTH_PRIVILEGED permission, but you can't use this permission if your app is a third party app (non-system app). To learn more, see Android API: BLUETOOTH_PRIVILEGED
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Some surveys and analytics showed that users very often turn down Location Permission request appearing in the mobile app even if this permission is crucial for the app, e.g. the app performs automatic scan for devices in a venue that handle business logic and exchange data with the mobile app. The permission request turn down rate is so high that it becomes problematic for business. Is there any way in Android to avoid this, e.g. to declare some verified devices that can be scanned without permission request? I thought of https://developer.android.com/guide/topics/connectivity/companion-device-pairing but it also means popping up requests for manual work for the user. Is there any way today to do it behind the scenes?
Unfortunately this is not possible for privacy and security reasons. Enabling BLE on Android devices goes hand in hand with the location permission. The only possible workaround for this is potentially if you use classic Bluetooth instead of BLE. I am not 100% sure about this one, but it is mentioned in this article:-
No one can use BLE scan API without having Location Permissions, and,
on most devices, it is useless without active Location Services.
However, Bluetooth Low Energy is an extension to so-called Bluetooth
Classic and interestingly enough Google decided this API does not need
location permissions to be called.
This is an OS requirement which cannot be overcome. You might've already seen this on the Android developer page for BLE:-
In order to use Bluetooth features in your application, you must
declare two permissions. The first of these is BLUETOOTH. You need
this permission to perform any Bluetooth communication, such as
requesting a connection, accepting a connection, and transferring
data.
The other permission that you must declare is ACCESS_FINE_LOCATION.
Your app needs this permission because a Bluetooth scan can be used to
gather information about the location of the user. This information
may come from the user's own devices, as well as Bluetooth beacons in
use at locations such as shops and transit facilities.
You can find more info about this here:-
The Ultimate Guide to Android BLE Development
Location needs to be enabled for BLE on Android
Bluetooth versus Location Permission
Can I pair smartphone over Bluetooth without a need to confirm this in user interface, accept to pair this devices. I use android studio. I don't need to exchange data over them, I need just pairing without any action. And then safely pair with smartphone over Bluetooth without any user's action?
Yes and no, but you shouldn't anyway.
The only way to do this in Android is by using the BLUETOOTH_PRIVILEGED permission, which, as you can see, is only granted to apps in /system/priv-app/ or apps signed by the platform key of the device.
So unless you have root and can move your app to /system/priv-app/, you can't do what you want. Even if you can do this, however, don't. It's not a good user experience when someone installs an app, only for it to move itself to the system partition and start pairing without any notification.
We have our own rooted hardware device with android OS 7.0
We are building an app for that device. We have to restrict the users to performing some of the actions who will purchase that device. Here are the list of actions We want user to be restricted to perform on the device through the app.
Stop installing/uninstalling any other apps from OS.
On/off wifi
Pair Bluetooth
Change wallpaper
Basic idea behind is to make an app which will be the system app and will restrict user from the things mentioned above.
Is this possible to make such app? Looking for help in any of the above tasks. Thanks
Shor answer: NO.
Here is why;
The Android operation System is based on permissions, and no app can restrict that actions even with the users' permission. The reason for this is because of the Android App Layer that provides all the capabilities you described above.
The only way you can do such thing is to Customize the ROM of the CellPhone. In this case, you can override the functions that allow the user to use such services.
In Android SDK the Wireless P2P (WiFi Direct) API is provided.
I am developing an application that would require for the app to connect to other devices on the fly that have the same application and share information among them (text data). In order to do so I require that the devices could connect automatically between each other. I was wondering if there is a way to do it if you have root permissions on your device. And another thing is if it is possible to work around by creating some kind of automate response of clicking the OK button on the dialog of the user request.
Best regards.
It can be done with the help of some classloader patching framework, like Xposed or Substrate. See my answer here for detailes.
I'm trying to create an Android App that makes it very clear and simple for a user to connect to a bluetooth device to collect some data.
Ideally, I'd like to eliminate the pairing request notification and have the app auto-pair to the device but not sure if this is possible. If not, is it possible to customize the pairing request notification? It currently says "To pair with XXX confirm it is showing the passkey..." Can that be customized to be more user friendly?
Is there anyway to bypass this?
Thanks
Don't believe it's possible to avoid pairing.. My opinion is that is mandatory there for security reasons...