send data using bluetooth to android mobile without an app? - android

I am working on iBeacon based project to send the push notification to Android devices using Bluetooth wireless technology. Is there any way to send the push notification to Android device without any installed app over the Bluetooth? Basically, iBeacon is connected to Pi using Bluetooth and Pi (Pi 3 with inbuilt Bluetooth) will communicate with Android devices using Bluetooth. Following are the possible ways to send data/notification to Android devices:
By an installed app
Push notification through chrome using web-socket
But above both ways are not useful for my task. Kindly allow me to know if there is any way to do it.

You can use Google Nearby to send a notification to the device on beacon detection. Tapping the notification can bring up a website or open a Google Play Store page to install your app.
https://developers.google.com/nearby/

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How to send notifications from a phone to device connected via BLE

I am trying to develop a companion app for a project of mine.
I want this app to relay incoming notifications on my phone to a device connected via BLE. This device will then display the text data on a screen, similar to a heads up display so that I can use it in my car and not have to go through my phone while driving (also illegal of course).
I want to know what is required for my app to be able to get notifications, and send it via BLE to the already connected device. I'd also really like to know if this can be done for an iOS app since I would prefer to end up with the final app being built for iOS. If not, android is fine for now.
This device is an ESP32 and will run its own code to execute actions when text is received.
Thank you

Not receiving GCM push notification when VPN is connected in my Android Phone

I am developing an android application & have implemented the GCM push notifications.Everything is working fine.I am sharing the internet connection of my PC in my android phone.I have a proxified net so either I have to connect VPN in my PC & then share that connection in the hot spot or I can share the normal connection & then connect VPN in my android phone.In the first case I'm able to receive the push notifications but in second case I'm not able to receive the push notifications.All other applications works fine in both the case like Whatsapp, Facebook etc.Why its not working for my application?
Everyone in my college uses the second method & I want them to be able to use my application.Help please?
Through process of elimination.
I have managed to get Join by joaoapps, which uses GCM pushes, to work with one small trick.
Use a VPN app with app filter capability (Such as VPN Client Pro, which is what I tested it on, but OpenVPN for Android might work too) to stop Google Player Services (com.google.com.android.gms) being tunneled through VPN connection (not necessarily need to filter your app).
I haven't had any problem sending/receiving pushes afterwards.
Good luck!

Android send notification message to device without client app installed on the device

I would like to know is there any way to send notification from a server to an Android device without a client app installed on the device. Does android OS has such functionality. Based on the answer here Does Android support near real time push notification? Google Cloud Messaging do similar things, but it seems the client app need to be installed on user mobile.
Basically what I want do when an android device comes in range of an iBeacon
I need to send the notification messages to the user mobile.
Is there any way to achieve it. Any possible solution?
Edit:
The real scenario is like,
I have the beacon placed in somewhere, when the a device comes in range of the beacon, some how I have to detect the device(if the device Bluetooth is on) and get some id of the device send notification from cloud server. Where as the device(Android phone) don't know the beacon is there, or there is no app installed on the device to detect the beacon.
I am not sure whether it's possible to achieve the above goal in such a scenario.
Please let me know your valuable feedback.
Chrome 42 or higher for Android supports push notifications from websites, which allows you to send notifications without installing an app.
If you're specifically looking to start notifications from a beacon, Chrome 49 added support for beacons

How would i send a push notification from tizen to android?

I want to send a notification to an android app based on some changes in the watch accelerometer, the watch is gear 2 running tizen. I can send notifications from android to the watch but not vice versa. How would I proceed with this ?
You can create Producer-Consumer (Companion) App using Accessory SDK. One for Android and one for Tizen gear. Add listeners in Tizen app and send data to android app when there is change in accelerometer reading.
You can refer Accessory SDK for more developing conpanion apps.

Can BLE device connect to android wearable directly without Android Mobile

Is it poosible BLE device(ibeacon) send notification to android wearable directly without going through Android Mobile?
If by "Android Mobile" you mean phone, than yes.
You just scan devices/pair etc. via BluetoothManger as it would be a normal Android phone.

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