Android Question button.background problem [solved]

Hans- Joachim Krahe

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hi there, does anyone know the reason:

I have buttons on layout 1, I paint with button background
B4X: 
Dim poCD_Start As ColorDrawable ' in globals
poCD_Start.Initialize(Colors. RGB(200,120,120), 110dip) ' in Activity_Create
Dim noteObject As Object = mapNoteZuButton.GetDefault( noteStr, "c0")
Dim notebutton As Button = noteObject
notebutton.background = poCD_Start' in sub

this works fine.

if I change to layout2 and return to layout1 then,

B4X: 
button.background = poCD_Start

is not yet executed - there is no error and the noteObject and noteButton and poCD_Start seem to be filled correctly...

dont know, why...



thanks for interest.


... needed to fill a map again - don't know why, but works now
 
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Hans- Joachim Krahe

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ups, Erel, I am not Albert Einstein... What is the drawable Instanz?

I am not even able to install ssl on my Iis10 Server. By the way; could anyone help me to install it by teamviever for fair donation at success? -)
 
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Erel

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Hans- Joachim Krahe said:
I am not even able to install ssl on my Iis10 Server. By the way; could anyone help me to install it by teamviever for fair donation at success?
Click to expand...
This question has nothing to do with this thread.

Hans- Joachim Krahe said:
What is the drawable Instanz?
Click to expand...
This code creates a single drawable instance:
B4X: 
Dim poCD_Start As ColorDrawable ' in globals
poCD_Start.Initialize(Colors. RGB(200,120,120), 110dip)
The object created should only be set to a single view. If you do something like this then you will get "strange" issues:
B4X: 
Button1.Background = poCD_Start
Button2.Background = poCD_Start
 
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Hans- Joachim Krahe

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hm, my layout has about 120 Buttons, I use the same instance of colorDrawable for - without problems, and change them in case of events.

B4X: 
                        If note < 48 Then
                            myButton(buttonCount).Background = poCD_min
                        Else If note < 60 Then
                            myButton(buttonCount).Background = poCD_0
                        Else If note < 72 Then
                            myButton(buttonCount).Background = poCD_1
                        Else If note < 84 Then
                            myButton(buttonCount).Background = poCD_2
                        Else If note < 96 Then
                            myButton(buttonCount).Background = poCD_3
                        Else
                       ' ------------------------------
                      
            Dim keyboardButton As Button = mapNoteZuButton.GetDefault(                                                                                                noteStr.Replace("*","") & "#", "c0")
          
            If intent = -112  Or intent = -111 Then  ' 0x90 0x91
                notebutton.Background = poCD_Start
                Try
                    keyboardButton.Background = poCD_Start
                Catch
                    Log(LastException)
                End Try
            Else




ist the reason mayby, I took instances from the buttons before? going back to the layout, I need to read the buttons again to the list - means, I built a new instance of buttons probably ...


B4X: 
    For Each v As View In Panel1.GetAllViewsRecursive
        If (GetType(V) = "android.widget.Button") Then
            buttonCount = buttonCount + 1 '
            myButton(buttonCount) = v

... have no errors even not in longTime test...

got a button_click sub for every butten. Would be fine, to have a central sub for button_click, but don't find a way...
 
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Hans- Joachim Krahe

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ok, try it. thank you

B4X: 
Sub CreateBackground (intent As Int,midiInt As Int) As ColorDrawable
    Dim cd As ColorDrawable
    Try
 

        cd.Initialize(Colors. RGB(200,120,120), 110dip)
        If intent = 0x90  Or intent = 0x91 Then  ' 0x90 0x91

            cd.Initialize(Colors.RGB(200,120,120), 110dip)
            Return cd                                                              ' ---------  error line 575
        Else
            If midiInt < 48 Then
                cd.Initialize(Colors.RGB(210,210,150),110dip)
            Else If midiInt < 60 Then
                cd.Initialize(Colors.RGB(220,220,170),110dip)
            Else If midiInt < 72 Then
                cd.Initialize(Colors.RGB(230,230,190),110dip)
            Else If midiInt < 84 Then
                cd.Initialize(Colors.RGB(240,240,220),110dip)
            Else If midiInt < 96 Then
                cd.Initialize(Colors.RGB(255,255,240),110dip)
            End If
            Return cd
'        Dim keyString As String = noteStr.Replace("*","") & "#"
'        keyboardButton.Background = mapButtonZuBackground.Get(keyString)
        End If
 
    Catch
        Log(LastException)
    End Try
'    ..
    Return cd
End Sub


Error occurred on line: 575 (Main)
java.lang.ClassCastException: java.lang.String cannot be cast to android.view.View
at anywheresoftware.b4a.objects.ViewWrapper.setBackground(ViewWrapper.java:105)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:733)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:352)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:175)
at anywheresoftware.b4a.objects.CompoundButtonWrapper$1.onCheckedChanged(CompoundButtonWrapper.java:44)
at android.widget.CompoundButton.setChecked(CompoundButton.java:154)
at android.widget.CompoundButton.toggle(CompoundButton.java:113)
at android.widget.CompoundButton.performClick(CompoundButton.java:118)
at android.view.View$PerformClick.run(View.java:20262)
at android.os.Handler.handleCallback(Handler.java:815)
at android.os.Handler.dispatchMessage(Handler.java:104)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5637)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)


hmmm, difficult stuff... cannot comprehend casting error...

ok, error is not consistent - does not go to catch! only rises, if sub is called out of a loop, not if it is called from incoming data. Maybe time sensitive..

error occurs, when 'intent' = 53 or 'intent' = 67. Very obscur...


...got it!
 
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