B4A Library [B4X] [XUI] AS View Pager based on xCustomListView

[Alexander Stolte]

Hey,
thanks to @KZero for his good zPager class, i was able to extract a few things from it to make this cross platform view.

I spend a lot of time in creating views, some views i need by my self, but some views not and to create a high quality view cost a lot of time. If you want to support me, then you can do it here by Paypal.

This library is compatible and tested with B4A,B4I and B4J!
If you have bugs or a wish then tell me it in the comments.

On B4J use the LEFT and RIGHT keys on your keyboard to change the page.
On B4I you need the GestureRecognizer class.

Spoiler: Dependencies/Libraries you need for this view

B4j: jXUI,JavaObject,xCustomListView,jReflection
B4a: XUi,Reflection,xCustomListView
B4i: iXUI,xCustomListView

Features

• cross-platform compatible
• based on a cross-platform ListView
• add and remove pages
• scroll to pages
• a good swipe feeling

ASViewPager
Author: Alexander Stolte
Version: 1.04

• ASViewPager
  • Events:
    • PageChanged (Index As Int)
    • ReachEnd
    • ScrollChanged (Offset As Int)
  • Functions:
    • AddPage (xpnl_layout As B4XView, value As Object) As String
    • Class_Globals As String
    • DesignerCreateView (Base As Object, Lbl As Label, Props As Map) As String
      Base type must be Object
    • getCurrentIndex As Int
    • getCustomListView As b4a.example3.customlistview
    • getSize As Int
    • Initialize (Callback As Object, EventName As String) As String
    • IsInitialized As Boolean
      Tests whether the object has been initialized.
    • NextPage As String
    • PreviousPage As String
    • RemovePage (index As Int) As String
    • setCurrentIndex (index As Int) As String
  • Properties:
    • CurrentIndex As Int
    • CustomListView As b4a.example3.customlistview [read only]
    • Size As Int [read only]

Changelog

• 1.00
  • Release
• 1.01
  • Base_Resize is now public
  • NextPage and PreviousPage Bug Fix
  • setCurrentIndex Bug Fix
  • PageChangeEvent Bug Fix
• 1.02
  • B4I Bug Fixes
  • NextPage and PreviousPage Bug Fix
• 1.03
  • Resize BugFix
• 1.04
  • B4I Page-Height BugFix
  • B4I Page-Swipe BugFix
• 1.05
  • BugFix

Have Fun

 

[KZero]

Nice work

working well except an error when it reaches the end
java.lang.IndexOutOfBoundsException: Invalid index 101, size is 101

 

[Alexander Stolte]

Nice work

Thanks, you too!

working well except an error when it reaches the end

Fixed, thanks!

 

[Alexander Stolte]

1.01

• Base_Resize is now public
• NextPage and PreviousPage Bug Fix
• setCurrentIndex Bug Fix
• PageChangeEvent Bug Fix

 

[Alexander Stolte]

1.02

• B4I Bug Fixes
• NextPage and PreviousPage Bug Fix

B4A and B4I Examples Updated

 

[Alexander Stolte]

1.03

• Resize BugFix

 

[nelson costa]

Error when version target to 29 (Android 10)

thanks.
................................
Error occurred on line: 78 (ASViewPager)
java.lang.NoSuchFieldException: No field mColorStateList in class Landroid/graphics/drawable/GradientDrawable$GradientState; (declaration of 'android.graphics.drawable.GradientDrawable$GradientState' appears in /system/framework/framework.jar)
at java.lang.Class.getDeclaredField(Native Method)
at anywheresoftware.b4a.objects.B4XViewWrapper.getColor(B4XViewWrapper.java:388)
at b4a.example3.customlistview._designercreateview(customlistview.java:305)
at com.as.viewpager.asviewpager._ini_xclv(asviewpager.java:306)
at com.as.viewpager.asviewpager._designercreateview(asviewpager.java:252)
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:351)
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.objects.CustomViewWrapper.AfterDesignerScript(CustomViewWrapper.java:61)
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:162)
at anywheresoftware.b4a.objects.ActivityWrapper.LoadLayout(ActivityWrapper.java:209)
at com.as.viewpager.main._activity_create(main.java:391)
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:351)
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 com.as.viewpager.main.afterFirstLayout(main.java:104)
at com.as.viewpager.main.access$000(main.java:17)
at com.as.viewpager.main$WaitForLayout.run(main.java:82)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:237)
at android.app.ActivityThread.main(ActivityThread.java:7860)
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:1075)
** Activity (main) Resume **

 

[Alexander Stolte]

is working well on 29, be sure to have all dependencies.

 

[oparra]

jetifier??

and congratulations

Alexander Stolte

 

[nelson costa]

XUI => 1.9
Reflection => 2.4
xCustomListView => 1.73

and error remains.

nelson.

 

[Erel]

I guess that you are using an old version of B4A.

 

[Alexander Stolte]

Update

• 1.04
  • B4I Page-Height BugFix
  • B4I Page-Swipe BugFix

 

[Alexander Stolte]

Update

• 1.05
  • BugFix