I have heard of communication between two android devices using that touch method or however that works. I understand that communication over WiFi is not a problem. I need to know if it is possible to create an app that would run on multiple devices but in the end would compile data collected on each device into one main database all done without WiFi. It just sounds like a hogwash idea in my mind but is this possible?
There is app call SuperBeam.You'll need SuperBeam installed on both devices and then you'll need to pair the devices using any of a number of methods, including QR Codes, NFC, or by typing a manual code.
https://www.youtube.com/watch?v=hGAAE7qru6g
youtube link if you want to see how to use SuperBeam app
Correction:I tought this app don't use wifi but i guess this app for devices aren't connect to the same Wifi
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As far as I know, wear smartwatches are designed to be companion devices that stay connected to your smartphone. Without a phone around, though, they aren't entirely useless.They'll still function as watches, for one, giving you the time and the date.
But I am not sure if there are any changes to this in any of the latest updates. So I want to know if it is possible to pair two smart watches and send messages using messageapi without the help of a smartphone.Just curious to know ?
Ideally, I want two watches to interact using messageapi to send messages. Is it possible to do without a smartphone?
Well, if talking about pairing two watches with each other, you definitely CAN NOT do this.
But, if you want to extend the abilities of an android smartwatch, you may add some features based on WiFi connection. Since a watch can be connected to a WiFi network, you're able to send messages and do some other stuff with it.
Also you should check up the Together feature, but as I may say, it's built on the interaction of two handhelds, but not wearables.
i am trying to connect two android devices using WIFI direct and i was successful. But the problem is the second device has to accept the a connection prompt after the other device initiates the connection. It is undesirable for what i am trying to achieve. I saw a few post here in stack overflow itself saying that currently its not possible. But came across an app called SUPERBEAM which user WIFI direct but without the prompt. A search in google gave me the following link from xda forum which says
SuperBeam creates an access point using Android's WiFi direct API's.
This essentially works like hotspot mode in old devices, but it is
guaranteed to work on newer devices like Nexus 7. Moreover, this mode
allows older devices to connect and receive files without having to
support WiFi direct's peer-to-peer connections and, more importantly, it
gets rid of the annoying "accept connection" prompt.
But no where i found information on how to implement this. Can anybody help me. Here is the link
http://forum.xda-developers.com/showthread.php?t=2177133
You could indeed simply use the createGroup function from the API to create a group, which also makes the access point. The first problem here is that the access point name & password are set automatically, and you can not change them.
So, you do need to pass the info to the connecting party, and for this, I would suggest using the local service advertising, and using the instance name there.
Did make simple test app for this and you can find it from Github under DrJukka/MyWifiMesh, also some discussions on the topic can be found from my blog
This can be achieve using Xposed framework. You need add the code and install the App. The phone needs to be rooted in order for it to work. I have tested it on multiple Samsung phones and it works.
Check this answer for details: How to auto-accept Wi-Fi Direct connection requests in Android
I've started to develop a chat application for Android. This app is supposed to function without internet and, most importantly, without an access point; It has to connect Android devices in a pure P2P manner.
However I've followed the following tutorials posted in android developers guide:
http://developer.android.com/training/connect-devices-wirelessly/nsd.html
http://developer.android.com/training/connect-devices-wirelessly/wifi-direct.html#fetch
Afterwards, I've tested my app on 3 devices, the problem is one of the devices acts as an access point, preventing other devices from connecting with each other if they are connected to it.
This doesn't work for my app, because I want each user to be able to connect to multiple users at the same time.
What do you suggest I do in order to achieve pure P2P connection for my Android app?
Does the group owner acts as an access point?
EDIT
After I've done some research I found the WiFi Direct is not suitable for my project since it has to assign a device as an access point, what I'm looking for is WiFi ad hoc mode or (IBSS) in Android Anybody got any suggestion on how to start working on that?
By using bt and wifi simultaneously, you can try to extend the network further. This will require some kind of packet routing.
Also, it seems android ignores wlan cards connected to usb otg - just plugging in extra wlan dongles could allow easy extension of network.
I'm wondering if it's possible for a Phonegap-based app on one android device to communicate with another Phonegap-based app on another device via Bluetooth?
If it's possible to do this kind of thing with some native Java code for Android, then it should be possible via Phonegap by wrapping that code up as a Phonegap plugin, right...?
From the Android documentation on Bluetooth, I understand one device needs to act as a server and listen for incoming connections and the other "client" needs to initiate by connecting to the server. This would work in the scenario I'm envisaging with two slightly different apps, a "master" app running on a tablet which controls a "slave" app running on a phone, for example.
This BluetoothSerial plugin seems like it might be useful, as it provides functionality for both listening and for initiating a connection. Has anyone use this plugin for communication between android devices?
Check the following two links hope it will answer your question:
https://github.com/don/BluetoothSerial/blob/e1f1b330747c7c656e567bbd51a568067337e756/README.md
https://github.com/don/BluetoothSerial
I was reading this
http://developer.android.com/guide/topics/wireless/bluetooth.html#QueryingPairedDevices
which is allot of help on how to pair,connect to a bluetooth device.
I have a situation where I have several BT devices that are in Non-Discover mode always. I know the MAC and the PIN of these devices. IS there a way in Android Dev to manually add devices to the PAIRED list so i can just use the connect as a client.
I understand this maual is written allot for V3. i think i will need to do this on 2.0 ; 2.1- has anybody done this before?
Basically these devices I want to connect to are power saving modules I used pre built BT modules to monitor daylight, another one humidity, etc.. every 3hrs or when interrupted and runs of a single battery for months. So turning off divcory on server saves immense power and prevents other people trying to connect and waste battery.
Not sure what you mean by "manually": Do you mean "manually" as in GUI/user interaction, or "manually" as "I do it in my own application code"?
Some suggestions though:
If you can make your BT devices discoverable at all, you could do it this way:
Make your BT device discoverable
Let Android search for and find the device and then initiate a connection
Android will ask for the PIN for pairing with the device; enter the PIN.
Once pairing was successful, Android stores the pairing information for future use, so that you can
Make your BT device invisible again.
From then on your app should be able to connect to the BT device at any time without further pairing operations.
If the said is not an option for you, maybe you want to go another way:
In current Android versions there are different API routines implemented which are neither documented nor exposed in the normal SDK. A hack kind of solution may be to use some of these "hidden" ("#hide"...) APIs, either via reflection or via modification of your SDK installation.
But be aware that this is always a hack and it may work on a specific device with a specific version of Android and is likely to break your app on another device and/or any other Android version.
Having said that, here comes some reference:
Example of how to access "hidden" bluetooth API.
Then, have a look at the source code for android.bluetooth.BluetoothDevice, e.g. here.
In there, public boolean createBond(){...} may do what you want.