I know that S-beam uses Wifi-Direct to transfer large files but I want to know if there is a way to send files using Wifi-Direct in devices that only supports android beam (eg. Nexus 7) without any support for S-beam ?
Currently as per my knowledge android beam uses only Bluetooth for transfer of large files.
Basically I would like my app to give user an option to select the mode of transfer(either Bluetooth or Wifi-Direct) while sending a file using android beam.
Related
I have an Android tablet with Android 4.2. This tablet does not have NFC hardware. However I have an external USB reader: ACR 1252U, that came with an Android library. This library unfortunately only gives me basic functionality - read and write Tags. Altough this is working quite well, it is not enough...
Because for my application I need to transfer files from my Android 4.2 tablet to other NFC devices (Android smartphones). So I need to put the NFC reader into peer-to-peer mode - which it supports. But how can I achive this with my setup? There indeed is an SDK for that reader, but it's Windows only.
Is it somehow possible, to use the built-in NFC-functions from Android with the external USB reader?
Is there another library for this reader, that supports peer-to-peer communication with other NFC-devices?
Is there another Hardware that I can use, to make this work?
Edit:
The linked question does NOT solve my problem:
It is 3.5 years old. On might think, that in meantime has changed a lot.
The answer to that question (= use the Android ACS library), is part of my own question... So it can't be the answer.
Is it somehow possible, to use the built-in NFC-functions from Android with the external USB reader?
No, that's not possible. If your Android devices did not ship with NFC, there simply is no built-in NFC functionality (not even on the software side). The Android NFC API is essentially an empty stub implementation that does nothing on such a device.
Is there another library for this reader, that supports peer-to-peer communication with other NFC-devices?
The library from ACS does not prevent you from accessing the reader's peer-to-peer capabilities, so I don't see why you would want to use a different library. See section 5.9 of the API specification on how to use the reader's peer-to-peer capabilities.
I need to transfer files from my Android 4.2 tablet to other Android NFC devices
Based on that request I assume that you want to use something like Android Beam to establish some fast out-of-band channel over NFC and then transfer the (large?) files over that out-of-band channel (e.g. WiFi or Bluetooth).
In that case, you would need to re-implement the Android Beam stack (NFC peer-to-peer mode + LLCP + Simple NDEF Exchange Protocol + establishing out-of-band communication channel + transfering file over that channel)
I need a your help
I'm making a file transfer app By Bluetooth and Wifi
But i can't find how send files from Android to iPhone by bluetooth
1 ) How send files from Android to iPhone ??
2 ) Where is sample codes ?
On iOS there are currently two ways to send/receive files over Bluetooth. The first way is over Bluetooth Classic which uses the External Accessory Framework. This does however require that the device you are connected to is MFi enabled, which (to the best of my knowledge) no Android-phone is. The other way is over BLE (Bluetooth Low Energy) which uses the Core Bluetooth Framework. BLE is designed to be very low power and thus have a pretty low throughput. It is possible to send larger files (like images) over it though, but you will probably have to cut the image in smaller pieces and stitch the data back together on the receiver side. You can read about the framework in the Core Bluetooth Programming Guide here: https://developer.apple.com/library/ios/documentation/NetworkingInternetWeb/Conceptual/CoreBluetooth_concepts/CoreBluetooth_concepts.pdf
NFC: What is the difference between S-beam and Android beam? Can someone explain the exact flow of Wifi-Direct/Bluetooth getting activated and transferring the data?
Explained on stackexchanged....
Even though Android Beam and S Beam serve similar purposes, they
actually work very differently and are not compatible with one
another.
Android Beam uses NFC to pair your devices over Bluetooth, then
transfers files over the Bluetooth connection. I believe it can also
transfer very small pieces of data (contacts, links, etc) directly
over NFC, as the Ice Cream Sandwich version highlights page implies:
For larger payloads, developers can even use Android Beam to initiate
a connection and transfer the data over Bluetooth, without the need
for user-visible pairing. S Beam, however, uses Wi-Fi Direct to
perform data transfers instead of Bluetooth. Their reasoning for doing
this is that Wi-Fi Direct offers faster transfer speeds (they quote up
to 300 Mbps). Therefore, this will only work with other S Beam enabled
devices, currently limiting it to communication between two Galaxy
S3s.
However, the SGS3 also supports Android Beam, so you can use that to
transfer something between a GNex and an SGS3. Here is a tutorial on
Sprint's website (should be essentially the same for other versions of
the SGS3).
I am developing an app with which I transfer a vcard between two nfc capable devices. I am able to do it if both the devices have android beam. I want to know if it is possible to transfer information from an ICS device(Having android beam) to a gingerbread device(which does not have android beam)...Thanks in advance..
Android supports two modes for operating with NFC:
P2P -> Android Beam //
Tag Reader -> "Advanced NFC Framework"
If i'm not wrong, Android Beak is supported in Gingerbread too, so you shoudn't have to face any problem exchanging data between two Android NFC devices with Beam.
The second way, is only for making operations with Tags. Android does not support card emulation officially so this is not an option for you.
Hope this helps you.
I am working with NFC in Android. I have done things with NFC tags and Android Beam, but I am wondering if is possible to communicate two Android phones with NFC without Android Beam.
I mean, I want to transfer some information, like a text or a URL using peer-to-peer in two Android phones, as if they were two NFC tags. I want to read and write this information in the other device, but the only way I have found to comunicate and trasfer data using P2P in Android is with Android Beam.
Is it possible?
PS. Sorry for mi english
No. It is not possible - if you want to use NFC bearer, only the SNEP/NPP over LLCP is possible (i.e. peer2peer mode).
Petr