Detect if your are connected to bluetooth

[mrossen]

Hi,

Is it possible to see if you are connected to a bluetooth device.

Can I catch an event if I move out of bluetooth range and again when I come in range.

My device aut. connect to the phone when I it is in range

Mogens

 

[Erel]

You can add an intent filter and listen to the following events: ACTION_ACL_CONNECTED and ACTION_ACL_DISCONNECTED: BluetoothDevice | Android Developers

Search the forum for: intent filter
There are several example of using the manifest editor to add intent filters.
Note that you also need to add the android.permission.BLUETOOTH permission.

 

[SoyEli]

bluetooth connected filter

Mr. Erel

Can you please elaborate on this.

After you add the filter to the manifest, then what ?
is there a event or how do you test from a app. ?


Thank you for your HELP :sign0188:

 

[Erel]

Create a service named s2 with this code:

Sub Service_Start (StartingIntent As Intent)
   Log(StartingIntent)
   Log(StartingIntent.ExtrasToString)
End Sub

Add the following code to the manifest editor:

AddReceiverText(s2, <intent-filter>
 <action android:name="android.bluetooth.device.action.ACL_CONNECTED"/>
 </intent-filter>)
 AddPermission(android.permission.BLUETOOTH)

Make a connection and check the logs.

 

[SoyEli]

Thank you:
Will try, and let you know

 

[SoyEli]

Thank you, that only works only when BT is connected.
What about when it is disconnected ?

Do I use this in the manifest:

AddReceiverText(BtConnected, <intent-filter> <action android:name="android.bluetooth.device.action.ACTION_ACL_DISCONNECTED
"/>
</intent-filter>)

Do I have to use another service for this, or the same one ?

Thank you for your HELP

 

[SoyEli]

Thank you:

I got it to work: :sign0060:

Thank you for all your help!

By the way the 1.9 is fantastic :wav:

 

[xmasmc]

Thank You,
I am searching for a long time for this solution - perfect

 

[seby8181]

Thank you! Is also possible know the data log from phone and device?

Thanks a lot!

 

[sz4t4n]

Hi,

maybe someone have an apk example which give feedback when BT is disconnected? I was trying use Erel code but I dont really know how to use it. I dont have any log's.

 

[hookshy]

How exactly to you use the code to catch the disconected event ? I did all the tests but did not succeded ! Where I am doing wrong ?

AddReceiverText(s2, <intent-filter>
<action android:name="android.bluetooth.device.action.ACL_CONNECTED"/>
<action android:name="android.bluetooth.device.action.ACTION_ACL_DISCONNECTED"/>
</intent-filter>)

 

[Erel]

Have you added the Bluetooth permission?

Can you post the code in s2 service?

 

[hookshy]

Here is the code I am using !
I tried on two device so be sure and I have this problem.

'This code will be applied to the manifest file during compilation.
'You do not need to modify it in most cases.
'See this link for for more information: http://www.b4x.com/forum/showthread.php?p=78136
AddManifestText(
<uses-sdk android:minSdkVersion="4" android:targetSdkVersion="14"/>

<supports-screens android:largeScreens="true"
    android:normalScreens="true"
    android:smallScreens="true"
    android:anyDensity="true"/>)

SetApplicationAttribute(android:icon, "@drawable/icon")
SetApplicationAttribute(android:label, "$LABEL$")
'End of default text.

SetActivityAttribute(main, android:windowSoftInputMode, adjustResize|stateHidden)'tastatura

AddApplicationText(
<activity android:name="com.tapit.adview.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation"/>
)

AddReceiverText(s2, <intent-filter>
<action android:name="android.bluetooth.device.action.ACL_CONNECTED"/>
<action android:name="android.bluetooth.device.action.ACTION_ACL_DISCONNECTED"/>
</intent-filter>)
AddPermission(android.permission.BLUETOOTH)


AddActivityText(main,  <intent-filter android:priority="1000">
      <action android:name="android.intent.action.VOICE_COMMAND" />
      <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
)


AddPermission(android.permission.MODIFY_AUDIO_SETTINGS)
AddPermission(android.permission.BLUETOOTH_ADMIN)
AddPermission(android.permission.BROADCAST_STICKY)

AddPermission(android.permission.CALL_PHONE)
AddPermission(android.permission.CHANGE_NETWORK_STATE)
AddPermission(android.permission.SEND_SMS)
AddPermission(android.permission.RECEIVE_SMS)
AddPermission(com.android.alarm.permission.SET_ALARM)
AddPermission(android.permission.CHANGE_WIFI_STATE)
AddPermission(android.permission.WRITE_SMS)

Can you post the code in s2 service?

Sub Service_Start (StartingIntent As Intent)
Log(StartingIntent)
Log(StartingIntent.Action)

If StartingIntent.Action="android.bluetooth.device.action.ACL_CONNECTED" Then
CallSubDelayed(Main,"show_btmode") 'actually this sub is showing a bluetooth bitmap to inform user that a connection is present (one way only :))
End If

End Sub

 

[Erel]

Have you checked the logs when you connected or disconnected the Bluetooth device (assuming that you are testing it in USB debug mode)?

Make sure to run your app in Release mode.

 

[hookshy]

I am running my app in the release mode and all that I can see on logs are:
Good to know that the code looks good .... By not cacthing ACL_Disconected I can not make a reliable automatic state detection ... for now
I will enclose option to manually set bluetooth headset... mode
Will still search and test further more...

** Activity (main) Pause, UserClosed = false **
** Service (s2) Start **
(Intent) Intent { act=android.bluetooth.device.action.ACL_CONNECTED cmp=hs.easy.romt/.s2$s2_BR (has extras) }
android.bluetooth.device.action.ACL_CONNECTED
sending message to waiting queue (CallSubDelayed - show_btmode)

 

[Erel]

See CallSubDelayed tutorial. It will not start the activity if the app is in the background. You need to call StartActivity if you really want to show an activity at that point.

 

[hookshy]

the message in waiting queue is ok, when the activity is started by user the show_btmode sub will start and change an image backgound state ..so I guess I understood how callsubdelayed works...

Give me some time to test on other devices the code and I will come with an answer ....

'I will try this code

Sub Process_Globals
'These global variables will be declared once when the application starts.
'These variables can be accessed from all modules.
Dim BT_Service_connected As Boolean
End Sub
Sub Service_Create
BT_Service_connected = False
End Sub

Sub Service_Start (StartingIntent As Intent)
If StartingIntent.Action = "android.bluetooth.device.action.ACL_CONNECTED" Then
Log("BT_Connect")
BT_Service_connected = True

' THE STATEMENT BELOW IS NOT EXECUTING IN MY CASE... !!
Else If StartingIntent.Action = "android.bluetooth.device.action.ACL_DISCONNECTED" Then
Log("BT_Disconnect")
BT_Service_connected = False
CallSubDelayed(Main, "BT_Disconnect")
End If

Log(StartingIntent)
Log(StartingIntent.ExtrasToString)
End Sub

 

[Erel]

the message in waiting queue is ok

Don't count on it. If the process is killed then the queue is killed as well. If there is any important data you need to save it to a file and later read it when the process starts.

 

[hookshy]

thank you for the reminder ... I will store it to file

 

[Roy Raymundo]

Create a service named s2 with this code:

Sub Service_Start (StartingIntent As Intent)
   Log(StartingIntent)
   Log(StartingIntent.ExtrasToString)
End Sub

Add the following code to the manifest editor:

AddReceiverText(s2, <intent-filter>
<action android:name="android.bluetooth.device.action.ACL_CONNECTED"/>
</intent-filter>)
AddPermission(android.permission.BLUETOOTH)

Make a connection and check the logs.

I have added these lines. One to the code itself. And one to the manifest editor. I also declared this following codes:

Dim admin As BluetoothAdmin
Dim serial1 As Serial

My codes are of no errors before. But after I added the lines that you want us to add, the error message I get is: "Module:s2_br not found". How come?