Android Question Bluetooth Receive not working in Kitkat

[Ricky]

I have upgrade my Samsung galaxy S4 to 4.4 and now my app is not working it uses Bluetooth to connect to a device and communicate back with the phone it send the command fine but when it receive data the app crash's.

The code i am using is from you example.

TextReader1.Initialize(Serial1.InputStream)
TextWriter1.Initialize(Serial1.OutputStream)

and when i install you example is does the same thing now crashs where is used to work before i upgraded to 4.4

 

[derez]

You should debug the application using the IDE and find where exactly and why (error reports) it crashes.
If you don't know why - publish the findings and then maybe someone could help.

 

[Erel]

You are probably getting the "network on main thread" exception. You should use AsyncStreams instead (or set the targetSdkVersion to 4).

 

[Ricky]

Hi Erel,

I have tried to use AsyncStreams and the same thing happens,

i have set the targetSdkVersion in the mainifest editor to
<uses-sdk android:minSdkVersion="4" android:targetSdkVersion="4"/>
and the same thing is happening

 

[Erel]

Can you post the full error message from the logs?

 

[Ricky]

When i run the Debug the app opens then closes

 

[Erel]

Are there any errors in the logs? What happens when you run it in release mode?

 

[Ricky]

No there is no errors, When I run it in release mode the app runs works fine and till you connect to the bluetooth module and send data to the phone it crash's and then stops the app

 

[Ricky]

is there anything you can recommend for me to do to get this working?

 

[Erel]

There must be an error message in the logs when the app crashes.

 

[Ricky]

this is all that comes up in the log

** Activity (main) Pause, UserClosed = false **
** Activity (menu) Create, isFirst = false **
(menu, 22) FullScreen or IncludeTitle properties in layout file do not match the activity attributes settings. (warning #1004)
** Activity (menu) Resume **
** Activity (menu) Pause, UserClosed = true **
** Activity (main) Resume **
** Activity (main) Pause, UserClosed = false **
** Activity (menu) Create, isFirst = false **
(menu, 22) FullScreen or IncludeTitle properties in layout file do not match the activity attributes settings. (warning #1004)
** Activity (menu) Resume **
** Activity (menu) Pause, UserClosed = true **
** Activity (main) Resume **
** Activity (main) Pause, UserClosed = true **
** Activity (main) Create, isFirst = false **
(Main, 107) FullScreen or IncludeTitle properties in layout file do not match the activity attributes settings. (warning #1004)
** Activity (main) Resume **
** Service (backgroundservice) Start **
** Service (getsms) Start **

 

[Erel]

Are you still using TextReader to read the text?

 

[Ricky]

Its says the app is not responding

 

[Ricky]

Yes i am still using TextReader

 

[Erel]

This is the problem. You should use AsyncStreams instead.

 

[Ricky]

I have tried AsyncStreams and it comes up with connection broke when it try's to receive a message

 

[Erel]

There are no known issues with Android 4.4 and Bluetooth. There are also no known issues with AsyncStreams.

It is not possible to further help without more information like the full error message and the relevant code.

 

[techknight]

My bluetooth serial apps still work after kitkat AOSP ROM flash. So i know it has to be programming/user error in this case.

 

[Ricky]

Hi,

I found this error.

Java.io.IOException: bt spocket closed, read return:-1 continue?