Hi, I would love to develop an Android app with Bluetooth Low Energy Direct
Advertising. Do you know when this will be available with Android? I know
that you can use your Android device as peripheral device now and also
perform regular advertising, but I am really looking forward to using
I am trying to increase the transfer speed on android bluetooth. I
experimented transferring a 2.7MB buffer from one android device to another
using RFComm socket of the Bluetooth API (see code below). It took ~70 secs
to complete. I compared this method against the "Share" via bluetooth
Hi everybody, i'm trying to connect a remote controller using bluetooth to
my Android device and everytime the failure is the same, when the android
device sends the SDP ( bluetooth service discovery protocol ) to the remote
controller, the remote controller response with the attributes and
Use-case
1. Implement a BlueTooth keyboard to connect to an android device
2. BT Keyboard should be able to lunch the 'Recent apps
http://img.wonderhowto.com/img/49/72/63550209324803/0/install-android-lollipop-recent-apps-menu-any-android.w654.jpg'
menu
Problem description
To
Then I don't understand why it's failing to connect. Most of the error
exception log messages point to either UUID is wrong or I'm not cancelling
BluetoothAdapter discovery.
I had looked back at the BluetoothChat SDK Sample, compared it with my
codes, and see no significant differences other
Re-reading Android Reference, it said the UUID needs to be the same for
both the server-side and the client-side. UUID.randomUUID() and
BluetoothDevice.getUuids() are sure to fail.
I hate it, but it looks like I need to set up to 7 constant (final) UUIDs
without generating them at
Why is generating them and sticking them in your code bad? Why do you
hate it? This is standard practice in many situations, so much that
IDEs do it for you sometimes.
Kris
On Fri, Feb 15, 2013 at 5:28 AM, tom_mai78101 tom.mai78...@gmail.com wrote:
Re-reading Android Reference, it said the
Why is generating them and sticking them in your code bad? Why do you
hate it? This is standard practice in many situations, so much that
IDEs do it for you sometimes.
I disliked having to generate them and stick them into my code, for fear of
security. And I never recalled my IDE
Bluetooth isn't really all that secure of a protocol... You have to
instead implement that at the application layer. (Although you can
read about Bluetooth encryption..)
Generating UUIDs is standard practice used all over the place in more
than Bluetooth: it's also used in many IDLs to identify
Thanks for the info. I have now fully grasped the usage of UUIDs in an app.
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The UUID just says what port the Bluetooth Server is on. I could have a
server running on Bluetooth port 1.
Does this imply there's a way to specify different Bluetooth ports, if the
port(s) exists? I have never heard of Bluetooth using ports like TCP. If
you're just making an example, then
That's not how it works: Bluetooth is built on top of RFCOMM, so it's
more like a serial channel. It's merely presented with a socket like
interface to wrap the behavior.
Kris
On Thu, Feb 14, 2013 at 4:56 AM, tom lee tom.mai78...@gmail.com wrote:
The UUID just says what port the Bluetooth
Yes, you can specify ports, but I think you may have to use Reflection on
Android.
This will give you a connection to port 17:
*BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();*
*
*
*BluetoothDevice device = adapter.getRemoteDevice(address);*
*
*
*M**ethod m =
So there is port emulation you can use if you use reflection, but it's
kind of wacky and doesn't really work like vanilla TCP: so it's
helpful not to think of it that way. You can read about it here:
I don't think ports matter in this case. In fact, I don't need ports.
Thanks anyway.
*BEWARE: Wall of text*
I have now narrowed down my problem, hopefully reaching a conclusion soon.
I'm having trouble with fetching one single UUID for two devices to use.
Here's a picture of what I have
After extensive researching on the Bluetooth Chat example, it all comes
down to using pre-determined UUIDs to connect to another device, the 1-to-1
way. However, that doesn't make it useful.
I need to not rely on pre-determined UUIDs, so that I'm able to connect
multiple devices together with
For many reasons, you really shouldn't be using non deterministic UUID
generation: it just doesn't make sense as to why you'd need it. (Keep
in mind, phones can only be connected to two or three other things at
a time.) What's your real problem? I've had cases where I generate
10 UUIDs and then
You just need one UUID for your app. Use it on the server and the
clients. It basically tells the clients what Bluetooth port number on the
server they need to connect to (from 1 to 31, I think).
You can use the uuidgen tool on Mac. Here's a UUID I just made if you want
it:
uuidgen
That's actually not quite right: if you have your app make multiple
connections then you do generally need multiple UUIDs. However, if
you need only a single connection then sure. My point is that you
should never need more than (theoretically) seven, as that's the size
of a BT piconet.
Kris
I have made multiple connections to a single UUID.
It is like TCP.
The UUID just says what port the Bluetooth Server is on. I could have a
server running on Bluetooth port 1.
Then I could make 2 or 3 simultaneous connections to it just like I can
make 2 or 3 simultaneous connections
I know it's *nominally* implemented this way, I'm just saying that
hasn't been my experience across devices (bugs and all). Though take
that with a grain of salt, my implementation was done over two years
ago now,
Kris
On Wed, Feb 13, 2013 at 12:25 PM, bob b...@coolfone.comze.com wrote:
I have
I just tried. The connection is still refused. I don't think the result was
affected by the timeout, since the timeout error was reported in the Logcat
after the connection was reported to be refused first.
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Why not try the Bluetooth Chat Sample and see if that works?
On Friday, February 8, 2013 4:22:06 AM UTC-6, tom_mai78101 wrote:
I just tried. The connection is still refused. I don't think the result
was affected by the timeout, since the timeout error was reported in the
Logcat after
i have posted this because its not working like that.
On Mon, Dec 10, 2012 at 12:47 PM, gjs garyjamessi...@gmail.com wrote:
Hi,
Then concentrate on getting 1 or 2 devices working with -
mChatService.connect(device);
Regards
On Sunday, December 9, 2012 1:19:08 AM UTC+11, akash roy
Hi,
Then concentrate on getting 1 or 2 devices working with -
mChatService.connect(device);
Regards
On Sunday, December 9, 2012 1:19:08 AM UTC+11, akash roy wrote:
please have a look on it..thankyou.
On Sat, Dec 8, 2012 at 9:26 AM, akash roy akashr...@gmail.comjavascript:
wrote:
please have a look on it..thankyou.
On Sat, Dec 8, 2012 at 9:26 AM, akash roy akashroy.n...@gmail.com wrote:
**
here i am trying to connect multiple devices one after another at one go.
now if it connects to a device it will send the message else it will try to
connect the next paired
**
here i am trying to connect multiple devices one after another at one go.
now if it connects to a device it will send the message else it will try to
connect the next paired device. here the main problem is that its not
connecting any device rather getting skipped one after other , before
Hi,
Can we explore other device's content once we pair device with our device
using Android Bluetooth package?
And get files from other device?
Thanks and Regards
Fahad Mullaji
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I am working on an application that attempts to make a Bluetooth
connection between an Android tablet and a custom device. The SDK of the
custom device requires that properties pertaining to authentication,
authorization, and encryption are set. I know I can use various
versions of the
My Application required bluetooth connectivity. And in the first phase I am
trying to open up the standard Activity *Bluetooth Device Picker* to help
user scan for new device or chose a device from the list.
The problem is that I am unable to get any working example for the
bluetooth device
Hi,
Kristopher, you said the hard limit is seven nodes, but I have a similar
problem. I'm trying to connect 6 bluetooth devices which uses the HSP/HFP
profiles on an Android phone but it seems to doesn't work on Android 2.3 (I
tried with Android 2.3.4, 2.3.5 and 2.3.6 on different devices) but
I've discussed this various places, this is one of them:
http://stackoverflow.com/questions/10963614/android-bluetooth-chat-sample-app-multiple-connections/10963812#10963812
The basic story is, yes, more than a few nodes is quite hard because
of some soft limitations and (iirc) flaky bluetooth
Ok thank you, that's what I thought.
Quentin
Le jeudi 6 septembre 2012 15:28:29 UTC+2, Kristopher Micinski a écrit :
I've discussed this various places, this is one of them:
http://stackoverflow.com/questions/10963614/android-bluetooth-chat-sample-app-multiple-connections/10963812#10963812
Anyone know if it is possible to have 16 Android devices simultaneously
connected to the same Bluetooth server?
Thanks.
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It is not, Bluetooth piconets enforce a hard limit of seven nodes.
You can try more exotic routing techniques and get the same effect..
it doesn't work very well.
kris
On Wed, Sep 5, 2012 at 3:56 PM, bob b...@coolfone.comze.com wrote:
Anyone know if it is possible to have 16 Android devices
hello，I am Tester using InstrumetationTestCase to Test， and i want to write
some case about file transfer，However，when run，logcat display some abnormal
below is my code，debug process， the defect pointer is
while(bis.read() != -1)
{
if(bis.read(mybytearray) == -1) break;
for(int i = 0 ; i
Android version: 2.3.7
Kernel version: 2.6.35-14-CyanogenMod-Arco-Kalim arco@tuxbox #1
Mod version: CyanogenMod-7.1.0.1-click
The device has been fully rooted.
I have added piece of code in my project
which taken from Bluez Utils in hidd.c.
The code is the following:
if (bind(sk, (struct
I need to send 10-bit data from the Analog to digital converter(ADC)
from a dsPIC at 2Mbps through UART interface, to the bluetooth module.
Then the bluetooth module should read this data through its UART
interface and transmit this data via bluetooth which will be finally
received by an Android
Hi Android developers,
I have done that the porting of HID profile onto Android 2.3 as the host.
My Android device(Gingerbread) now is able to connect to the Bluetooth
mouse/kb and it works really nice!
However, my question is that it seems very lack of information about to
make Android device
Please don't post the same message multiple times...
Thanks,
Justin Anderson
MagouyaWare Developer
http://sites.google.com/site/magouyaware
On Thu, Mar 29, 2012 at 3:43 AM, I-Sheng Lin ckjboy2...@gmail.com wrote:
Hi Android developers,
I have done that the porting of HID profile onto
Hi,
i m newbie in android devlopment. and i am tryning to connect and
send string continous other devices with bluetooth.
pls help me .
thnks
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On Mon, Oct 24, 2011 at 5:21 AM, pankaj sharma pankajs22...@gmail.comwrote:
Hi,
i m newbie in android devlopment. and i am tryning to connect and
send string continous other devices with bluetooth.
pls help me .
thnks
http://catb.org/~esr/faqs/smart-questions.html
Hi all,
I was wondering if anyone knows the data frame protocol that android
uses by default.
Or if anyone knows of a technical document with this information I'd
be more than happy to read it for myself.
I need to know what exactly the data frame looks like, for example...
8-data bits | 1 Odd
Hello everybody!
i'm developping an android application to remote control a lego
mindstorm NXT.
The NXT let the mobile control motors, and sensors (ultrasonic, light,
temperature,...)
The android mobile is linked to the nxt by bluetooth.
I success in controling the motors, but now i've got one
It is possible to connect simultaneously to multiple bluetooth devices?
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I am using an handsfree bluetooth handset in ndroid device. i need to
program the handsfree in my application. Firstly, when i create a beep
sound it should be heard in handsfree. When i press some button (in
fact 1 out of 2 buttons, I need yes or no answer) in handsfree and the
appropriate answer
I am using an handsfree bluetooth handset in ndroid device. i need to
program the handsfree in my application. Firstly, when i create a beep
sound it should be heard in handsfree. When i press some button (in
fact 1 out of 2 buttons, I need yes or no answer) in handsfree and the
appropriate answer
Hello All,
I am working on developing a HID Bluetooth Driver, that would allow an
user to connect a bluetooth keyboard or mouse. So far I was able to
achieve this goal using JNI, and a C BlueZ interface, but there were
compatibility problems: the software only worked on a few devices.
As
I wonder what would be the right java android bluetooth rfcomm client
code to connect to the following python bluetooth server program.
Thanks in advance.
#
# The following is the PyBluez-0.18 simple example : rfcomm-server.py
#
# desc: simple demonstration of a server application that uses
@moderator please excuse my first mail, I hit the wrong button.
Hi everybody,
I'm trying for hours and couldn't find an answer anywhere online nor
in my Logs. I'm trying to establisch an RFCOMM Link by Bluetooth
between an external Device that implements the SPP 1.04 Profile. Here
is the output
Hi everybody,
I'm trying for hours and couldn't find an answer anywhere online nor
in my Logs. I'm trying to establisch an RFCOMM Link by Bluetooth
between an external Device that implements the SPP 1.04 Profile. Here
is the output from sdptool:
sudo sdptool browse
Inquiring ...
Browsing
Hi all
I'm developing chat application
i want android device to connect with other non android device that
implement jsr 82
so how can i declare my bluetooth service on android
or how to connect to any jsr 82 service ...
Thanks
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hi,all.
I use the android-bluetooth control my T-mobile G1 phone.But when I
scan remotedevice I cause an ?null? Exception. this is the part of
code.
try {
if(localBtDev.isScanning() == false){
//localBtDev.scan();
}
} catch (Exception e1) {
// TODO Auto-generated catch
I was wondering whether anyone could clarify the following:
I am attempting to create an accurate GPS transmitting program on a T-
Mobile G1, and I am looking to purchase a GlobalSat-368i bluetooth GPS
receiver to get better accuracy than the phone's internal receiver.
The thing is that the
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