Automatic bluetooth pairing on button click - android

I have a problem that I want to do an automatic Bluetooth pairing on button click in android.
But I doesn't have any reference to do the same. Please suggest me any solution for the same.
After the pairing I have to transfer an Image. I don't know how it would be done? Please suggest If you have any suggestion regarding this also. But the first priority is to Automatic pairing.
Thanks in advance.

I don't think the system will allow you to pair automatically the first time. As far as I know there must be user interaction in order to turn on the bluetooth radio, and to pair (but not to "connect" to) a device. Check out the Bluetooth chat example on the dev site to get started. http://developer.android.com/resources/samples/BluetoothChat/index.html

Related

android connection bluetooth auto

I found some good tuto on google to create an application with bluetooth, but I found nothing to connect the bluetooth and manage automaticaly any devise by the system (like keyboard, mouse, headphone).
(I dont want to create a new use of bluetooth, but only manage connexions).
Do you have any idea to do this ?
Thanks for your answers,
Alex

Automatically Detect android device which has just entered in the range of my wifi router

If any android device comes in the range of my wifi router I want to send the notification to that device automatically and get the reply when user click of OK button in the notification.
Is this possible to achive ? If yes, any help will be appreciated.
Thank you for investing your valuable time to read this post.
Its Possible, By using Bounjour service you can achieve this.
Bounjour service
there are some limitation over there. You have to run your service in both a device(For Identifying device/sending data/receiving data).The devices should be in same network.

Bluetooth paring

Is there a possibility to force dialog show to user for entering a PIN.
I have a barcode reader, that on server side (I think), and he need to get a PIN code. But the problem is that all androids up 2.2 don't won't to show dialog. (The 2.2. show dialog and the pairing are ok).
In my code I reach discovering devices, and the next step is a paring.
I will be thankful for give me some explanations
A Simple answer would be NO, It can't be possible to force user in PIN dialog as it is system generated.
You may create your own System checking for bluetooth pairing. A BroadCastReceiver will help you in this matter.

Is it possible to lock the bluetooth in android device for a specific time period

I am able to disable Bluetooth using Bluetooth API`s Disable method .but my requirement is also to prevent the user interaction for Bluetooth when my apps is running.Is there any way to prevent the user interaction i.e when the user try to enable Bluetooth the app will block it.
Thanks in advance.
This is a small piece of code that needs to be written to disable/block bluetooth access. However, if you want to modify the functionality lagely, rooting is the solution. However, this post is already having relevance to the one noted ast : How to enable/disable bluetooth programmatically in android

Is there a way for automatic/programatic pairing of 2 bluetooth devices in android?

I am developing an application which connects devices over bluetooth and exchanges messages. It works fine for paired devices, but I would also like it to automatically pair devices that are not paired. Like for example it could store and use the same PIN for pairing requests, I just dont know how to manage this request programatically in my applciation, how to automatically set and send the PIN when you get a pairing request and how to initiate such a request with the predefined PIN code.
Any snippets or thoughts would be highly appreciated! :)
EDIT:
I know its risky, I am developing this app for emergency situations only where no other means but bluetooth is available. Also is there maybe a way of premature pairing with devices without even connecting to them? Like lets say there is a list of MAC Addresses of those devices and I can use them to generate a bond with that devices so that they appear paired on my device?
You can't do this. To do what you want to do would create a huge security risk. Think about it, my device just comes anywhere in bluetooth range of yours and now I can send you anything I want without you knowing? You can't really do this and I highly recommend not trying to subvert it.
Reflecting the setPin method allowed me to send the pin automatically to the other device. I had to implement it in a broadcast receiver that is listening for pairing requests. Although I cant get rid of the dialog it just stucks there on the screen and I dont know how to close it (programatically) and continue the bonding procedure since this dialog is called from inside connect() which is a blocking method. I am not giving up on it yet though :)
With Bluetooth version 2.1 and above there is a method of pairing called the 'just works' association model. This is the lowest security method of pairing and has no protection against man-in-the-middle attacks.
However, this will provide a secure, encrypted link without the need to exchange pin numbers or verify device ID.
The API on different platforms may differ but the underlying HCI messages require that you indicate that your device (or one of the devices) has the following IO capabilities:
No Keyboard, No Display.
As you might have guessed, this is a mode for very
simple devices that use Bluetooth, such as a speaker or headphones.
If you can find the API to configure that, then the 'just works' association mode of Secure Simple Pairing will be used for pairing.
The next step is to store the link keys e.g. bonding. Many devices e.g. mobile phones, will still create a dialogue box to the user to ask if they want to 'remember this device', as user authorisation is specified by the BT specifications... but that's another problem.

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