Android Question Error opening USB

Discussion in 'Android Questions' started by akosije, Jan 29, 2015.

  1. akosije

    akosije Member Licensed User

    ** Activity (main) Pause, UserClosed = false **
    ** Activity (main) Resume **
    Installing file.
    ** Activity (main) Pause, UserClosed = false **
    PackageAdded: package:b4a.example1
    ** Activity (main) Create, isFirst = true **
    Error opening USB port
    (Exception) Not initialized
    ** Activity (main) Resume **

    If usb.UsbPresent =       
    "ast", usb.GetInputStream, usb.GetOutputStream)
    Log("Error opening USB port")
            End If
    That code works on my attached file but i dont know why this code isnt work on my other project.

    Attached Files:

  2. Erel

    Erel Administrator Staff Member Licensed User

  3. akosije

    akosije Member Licensed User

    Hi sir Erel,

    I already inlucde this on my xml file

    AddActivityText(main, <intent-filter>
    <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
    <meta-data android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
    android:resource="@xml/device_filter" />)

    and put the device_filter on res/xml

    but still same error
  4. akosije

    akosije Member Licensed User

    Its working now!!

    I just Downloaded the usb serial v2.4 and it works fine!!
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