B4A Library AHViewPager library - Sliding panels now perfect

corwin42 · May 7, 2015

CyberoxInc said:
B4X:

Pager.GotoPage(0, True)

Hi, any way to change page transition speed? change too fast on real devices

Sorry, no. It is not possible.
There are some (complicated) solutions on StackOverflow how to set the transition speed but I don't think I will add one of them to the library.

fishwolf · May 18, 2015

How to replace the list view with table?

i have tried with:

B4X:

Case TYPE_LISTVIEW
       Dim TableIndex As Table
       
       TableIndex.Initialize(Me, "TableIndex", 4)
       TableIndex.SetHeader(Array As String("Col1", "Col2", "Col3", "Col4"))
       TableIndex.SetColumnsWidths(Array As Int(25%x, 25%x, 25%x, 25%x))
   
       For i=0 To 20
         TableIndex.AddRow(1, Array As String(i+1, "aaaaaaaa", " bbbbbbbbb", "cccc"))
       Next
       
       pan.AddView(TableIndex, 0, 0, FILL_PARENT, FILL_PARENT)

but i receive this compile error:

B4X:

pan.AddView(TableIndex, 0, 0, FILL_PARENT, FILL
javac 1.7.0_21
src\de\amberhome\viewpagerexample\main.java:653: error: inconvertible types
_pan.AddView((android.view.View)(_tableindex),(int) (0),(int) (0),_fill_parent,_fill_parent);
  ^
  required: View
  found:  table
1 error

corwin42 · May 19, 2015

fishwolf said:
How to replace the list view with table?

i have tried with: [...]

Do you use an additional library for the Table? A Table object is not known to B4A by default.

fishwolf · May 19, 2015

corwin42 said:
Do you use an additional library for the Table? A Table object is not known to B4A by default.

No, it's a Erel class that draw and manage a classic table.

https://www.b4x.com/android/forum/threads/class-tableview-supports-tables-of-any-size.19254/#content

corwin42 · May 19, 2015

fishwolf said:
No, it's a Erel class that draw and manage a classic table.

https://www.b4x.com/android/forum/threads/class-tableview-supports-tables-of-any-size.19254/#content

You cannot add this class as a view.

Try to add a Panel to the ViewPager and then use Table.AddToActivity(Panel, Left, Top, Width, Height) to add the Table to this Panel.
If this does not work because of a type conflict (Activity<->Panel) then you have to change the table class AddToActivity Sub that it accepts a panel instead of an activity.

fishwolf · May 27, 2015

Ok, with

corwin42 said:
You cannot add this class as a view.

Try to add a Panel to the ViewPager and then use Table.AddToActivity(Panel, Left, Top, Width, Height) to add the Table to this Panel.
If this does not work because of a type conflict (Activity<->Panel) then you have to change the table class AddToActivity Sub that it accepts a panel instead of an activity.

OK, with panel work fine.

Other question:
i need put data into the tables from some http request, one request for each panel.
http request works in asyncron mode.

what is the correct method for write the code?

create each panel and after put the data (how to?)
or
call the http request and after into asyncron callback function, create the panel with the data

?????

Thanks

corwin42 · May 28, 2015

fishwolf said:
what is the correct method for write the code?

There is no "correct method". It depends on how you want your app behave. Both of your solutions are possible.

fishwolf · May 28, 2015

corwin42 said:
There is no "correct method". It depends on how you want your app behave. Both of your solutions are possible.

I prefer the first method, i think that i see the tab and the header table during the time download

But, how to i can access to table object if the object is defined into function ?

ajk · Jun 5, 2015

Rapid debug do not work with this library (eg. with example file). This is common issue or problem with my computer?

Erel · Jun 5, 2015

Which error do you get?

ajk · Jun 5, 2015

I do not get any error. Just device "hangs". I have found "solution" - tried it on newest phone - and works OK.

My post 429 was written after unsuccessful attempts on 5 different "older" devices.

Than you Erel for your fast response!

AHilberink · Jul 2, 2015

Hi,

I have a question. Adding a new tab works fine, but going to the new tab by using GotoPage gives an error:
java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

My code:

B4X:

Sub NewPage(NaamTab As String)
    container.AddPageAt(CreatePanel(TYPE_Schoen, NaamTab),NaamTab, container.Count)
    'Inform the AHViewPagerTabs object that the data has changed.
    tabs.NotifyDataChange
    'Slide to the new page
    pager.GotoPage(container.Count-1, True)
End Sub

What is going wrong?

Best regards,
André

AHilberink · Jul 2, 2015

Hi again,

I do have another question:
On my tabs I have a ListView. Updating the ListView appears on the last Tab and not on the one currently active.

For example:
I have 4 tabs all having the ListView with different data depending on the tab. I am on Tab2 and add a line to the ListView. The new ListView appears on Tab4 (last tab) and not on the Tab2 (currently active).

Is there something I can do about this?

Best regards,
André

corwin42 · Jul 2, 2015

AHilberink said:
Hi,

I have a question. Adding a new tab works fine, but going to the new tab by using GotoPage gives an error:
java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

My code:

B4X:

Sub NewPage(NaamTab As String) container.AddPageAt(CreatePanel(TYPE_Schoen, NaamTab),NaamTab, container.Count) 'Inform the AHViewPagerTabs object that the data has changed. tabs.NotifyDataChange 'Slide to the new page pager.GotoPage(container.Count-1, True) End Sub

Can you please add the full stack trace and not only the exception. With that information I can't see where the exception is thrown.

AHilberink said:
On my tabs I have a ListView. Updating the ListView appears on the last Tab and not on the one currently active.

I don't know how you have implemented this. But from what you describe it seems that you have only one reference for the ListViews so updating the ListView with this reference will of course always update the last ListView. You have to store all ListView references in a global variable (Array, List etc.) and update the one you want.

AHilberink · Jul 2, 2015

corwin42 said:
Can you please add the full stack trace and not only the exception. With that information I can't see where the exception is thrown.

I don't know how you have implemented this. But from what you describe it seems that you have only one reference for the ListViews so updating the ListView with this reference will of course always update the last ListView. You have to store all ListView references in a global variable (Array, List etc.) and update the one you want.

Hi,

Thanks for the quick response. Here the full stack trace:
** Activity (main) Pause, UserClosed = false **
** Activity (addshoe) Create, isFirst = true **
** Activity (addshoe) Resume **
InsertMaps (first query out of 1): INSERT INTO [Schoenen] ([Naam], [Afbeelding], [Actief]) VALUES (?, ?, ?)
** Activity (addshoe) Pause, UserClosed = true **
** Activity (main) Resume **
main_newpage (B4A line: 168)
End Sub
java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
at android.view.ViewGroup.addViewInner(ViewGroup.java:1970)
at android.view.ViewGroup.addView(ViewGroup.java:1865)
at android.support.v4.view.ViewPager.addView(ViewPager.java:1304)
at de.amberhome.viewpager.AHPageContainer.instantiateItem(AHPageContainer.java:86)
at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:832)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1016)
at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:550)
at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:509)
at android.support.v4.view.ViewPager.setCurrentItem(ViewPager.java:501)
at de.amberhome.viewpager.AHViewPager.GotoPage(AHViewPager.java:121)
at b4a.RunningShoe.main._newpage(main.java:892)
at b4a.RunningShoe.main._activity_resume(main.java:506)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:187)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:171)
at b4a.RunningShoe.main$ResumeMessage.run(main.java:296)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
at dalvik.system.NativeStart.main(Native Method)

Best regards,
André

corwin42 · Jul 2, 2015

It seems that the Panel you added to the AHPageContainer is already added to another view. Does CreatePanel really create a new panel. It must not reuse another panel object.

Jerez · Jul 19, 2015

Hi! i'm using smooth transition. Any way to go from page 1 to 10 without passing by 2,3,4,5,6,7,8,9... and then 10? looks like a carousel effect. Please advise! i won't lose the smooth animation transition.

thanks!

Kiese · Jul 23, 2015

Hi ! I was wondering if there is any way to add pages with different widths or is there a workaround to give such effect or maybe more control over the position of the pages ?
Not too sure if this makes all sense, but what I would like to do is give an impression of piling up some of the pages as the user navigates . (Did that make sense ?)

Kiese · Jul 23, 2015

I noticed there is a container.getpagewidth(arg0) as int. By any chance is there a way to implement a container.setpagewidth maybe through reflection/javaobject (which are new to me so I don't really know where to begin).
Thanks in advance and many thanks for the great lib! Sure saves a lot of coding time.

Mashiane · Aug 10, 2015

Hi,

I'm using your CreatePanel method to load existing layouts. I have about 5 pages on my container and some have the same identical layout loaded in the panels. How can I detect which button/imageview/label that was clicked inside the different panels?

B4A Library AHViewPager library - Sliding panels now perfect

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