Android Question BLE Chat bugs

Discussion in 'Android Questions' started by techknight, Jun 21, 2019.

  1. techknight

    techknight Well-Known Member Licensed User

    So, I am using the BLE chat example with my app. The Android device is the Central, while my iOS tablet is the Peripheral. At the same time, the iOS tablet is connected to another BLE peripheral, to control a device.

    It works fine, except after a while when its connected, the connection would suddenly drop. Sometimes it will stay connected, but the Notify would drop out. So I could send TO the peripheral, but be unable to receive anything FROM the peripheral.

    Then I when I would send back to the peripheral on a "Drop", I would get this error from the central:

    Code:
    Logger connected to:  Google Pixel
    --------- beginning of main
    'A whole bunch of time passing by here, maybe 5 to 8 minutes
    CLOCK;76:24;40;25;40
    CLOCK;
    76:23;40;25;40
    CLOCK;
    76:22;40;25;40
    CLOCK;
    76:21;40;25;40
    CLOCK;
    76:20;40;25;40
    CLOCK;
    76:19;40;25;40
    CLOCK;
    76:18;40;25;40
    CLOCK;
    76:17;40;25;40
    CLOCK;
    76:16;40;25;40
    CLOCK;
    76:15;40;25;40
    CLOCK;
    76:14;40;25;40
    CLOCK;
    76:13;40;25;40
    retries: 
    4 'Me pressing a button to attempt a Write.
    retries: 3
    retries: 
    2
    retries: 
    1
    Error occurred on line: 
    751 (Main)
    java.lang.RuntimeException: Error writing data 
    to00001002-0000-1000-8000-00805f9b34fb
        at anywheresoftware.b4a.objects.BleManager2.WriteData(BleManager2.java:
    356)
        at md.smrm01.main._cmdstartclock_click(main.java:
    802)
        at java.lang.reflect.Method.invoke(Native Method)
        at anywheresoftware.b4a.shell.Shell.runMethod(
    Shell.java:732)
        at anywheresoftware.b4a.shell.Shell.raiseEventImpl(
    Shell.java:348)
        at anywheresoftware.b4a.shell.Shell.raiseEvent(
    Shell.java:255)
        at java.lang.reflect.Method.invoke(Native Method)
        at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:
    144)
        at anywheresoftware.b4a.BA.raiseEvent2(BA.java:
    180)
        at anywheresoftware.b4a.BA.raiseEvent(BA.java:
    176)
        at anywheresoftware.b4a.objects.ViewWrapper$
    1.onClick(ViewWrapper.java:80)
        at android.view.View.performClick(
    View.java:6597)
        at android.view.View.performClickInternal(
    View.java:6574)
        at android.view.View.access$
    3100(View.java:778)
        at android.view.View$PerformClick.run(
    View.java:25885)
        at android.os.Handler.handleCallback(Handler.java:
    873)
        at android.os.Handler.dispatchMessage(Handler.java:
    99)
        at android.os.Looper.loop(Looper.java:
    193)
        at android.app.ActivityThread.main(ActivityThread.java:
    6718)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:
    493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:
    858)
    With more testing, It only happens when the iOS app is connected both as a Peripheral to my phone, as well as a Central to the BLE module.

    This keeps happening. Any thoughts?
     
    Last edited: Jun 21, 2019
  2. Erel

    Erel Administrator Staff Member Licensed User

    Might be a limitation of iOS BLE feature.

    You should catch this error and try to reconnect.
     
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