how can solve "java.lang.reflect.InvocationTargetException" problem
my code like this
my code like this
B4X:
#Region Project Attributes
#ApplicationLabel: testprint
#VersionCode: 1
#VersionName:
'SupportedOrientations possible values: unspecified, landscape or portrait.
#SupportedOrientations: unspecified
#CanInstallToExternalStorage: False
#End Region
#Region Activity Attributes
#FullScreen: False
#IncludeTitle: True
#End Region
#AdditionalJar: customandroidapi
Sub Process_Globals
'These global variables will be declared once when the application starts.
'These variables can be accessed from all modules.
End Sub
Sub Globals
'These global variables will be redeclared each time the activity is created.
'These variables can only be accessed from this module.
Dim serial1 As Serial
Dim r As Reflector
Dim prnDevice As JavaObject
'Dim adapter As JavaObject
End Sub
Sub Activity_Create(FirstTime As Boolean)
'Do not forget to load the layout file created with the visual designer. For example:
Activity.LoadLayout("Layout1")
serial1.Initialize("Serial1")
'Serial1 is an initialized Serial object
End Sub
Sub Activity_Resume
End Sub
Sub Activity_Pause (UserClosed As Boolean)
End Sub
Sub Button1_Click
Dim image As Bitmap
image.Initialize(File.DirAssets,"test.png")
r.Target = serial1
Dim adapter As JavaObject = r.GetField("blueAdapter")
adapter = r.GetField("blueAdapter")
'Dim BluetoothDevice As JavaObject = adapter.RunMethodJO("getRemoteDevice", Array("50:E8:00:F5:89:5C"))
Dim BluetoothDevice As JavaObject = adapter.RunMethod("getRemoteDevice", Array("10:00:E8:6C:8D:45"))
'Dim prnDevice As JavaObject
prnDevice = prnDevice.InitializeNewInstance("it.custom.printer.api.android.CustomAndroidAPI", Null).RunMethod( _
"getPrinterDriverBT", Array(BluetoothDevice))
' Dim CustomPrinter As JavaObject
' CustomPrinter.InitializeStatic("it.custom.printer.api.android.CustomPrinter")
' prnDevice.RunMethod("printImage", Array(image, CustomPrinter.GetField("IMAGE_SCALE_TO_WIDTH"),CustomPrinter.GetField("CustomPrinter.IMAGE_SCALE_TO_FIT"),0))
End Sub
Sub Button2_Click
Dim image As Bitmap
image.Initialize(File.DirAssets,"test.png")
Dim CustomPrinter As JavaObject
CustomPrinter.InitializeStatic("it.custom.printer.api.android.CustomPrinter")
prnDevice.RunMethod("printImage", Array(image, CustomPrinter.GetField("IMAGE_SCALE_TO_WIDTH"),CustomPrinter.GetField( _
"CustomPrinter.IMAGE_SCALE_TO_FIT"),0))
End Sub