Android Tutorial ScrollView examples summary

There are many ScrollView examples on the forum, I made a summary of them for my own use and I think it would be interesting for others.

Creating a table view based on ScrollView


Gridline in TableView using Scrollview

based on Creating a table view based on ScrollView with separation lines.


Rearrange ListView lines post #3
Despite the title, it is a ScrollView

List with two columns and a checkbox


ScrollView example Image ScrollView


add imageview half manually Another image ScrollView


The same as above but with a Label below each image


Another ScrollView example


Multiple table example post #4

Example with two tables, based on Gridline in TableView using Scrollview but with two ScrollViews.


Display Long text simple.

This is the simplest example to display long texts in a ScrollView.


Display Long texts.

The program displays different texts with different fonts and different font sizes.


Real newb question about how to display a block of scrollable text
Help display,

The texts are those from the FastFourierTransform Library Demo program.


Sql and ListView
Example with:
- a SQL data base
- multi selection
- different colors for header and columns
- different font sizes and alignments
- in the example the first column 'Code' is hidden


ScrollView, layouts and getting current selected
Each item is a Panel
With a label, an EditText and a Button on each itempanel


ScrollView example with multiselection and SQL

- adding a row
- moving a selected row up and down
- mono-selection, clicking on one row selects it, clicking on another row unselects the previous one and selects the new one.
- multi-selection, after one row is selected, a longclick on another row activates multi-selection, clicking on a third row selects it, clicking on a selected row unselects it. Unselecting down to one selected row reactivates mono-selection.
- deleting rows, mono and multi


ScrollView example with a Panel higher than the screen.

The layouts are designed in the Designer, not in the code.

There are 2 layout files:
- Main with the ScrollView.
- ScrollViewLayout has one Panel higher than the screen, 7 Label views and 7 EditText views, the Panel height is set so the last EditText view is on top of the screen when the panel's lower edge is on the lower edge of the screen.

Clicking on an EditText moves the Scrollview up to show this EditText view on top of the screen to avoid interference with the virtual keyboard.


TabHost & ScrollViews

Attached a demo program with a TabHost View with two tabs with ScrollViews.



SQLite database program using several ScrollViews.

What the program can do:
- Read a database, 'Load' button.
- Edit, modify or delete date sets (single- or multi-selection), 'Edit' button.
- Edit and modify a single cell, 'Long_Click' on a cell in a selected row.
- Filter the database, 'Filter' button, Click filter or unfilter, LongClick definition of filter criterias.
- Sort a column ascending or descending, clickink onto the column header.
- Create a new database, 'New' button.
- Scroll the table verticaly with the standard Scrollview, and horizontaly on the blue line between the ScrollView and the toolbox (or with a SeekBar, hidden by default.
- Change the table setup, alignment, column width, text size, colors, etc.

What the program connot do:
- Share multiple tables.


GPS Example program

Setup screen: ScrollView with a panel higher than the screen
GPS path data: ScrollView table with first column always visibel.



This code is an example of creating an expandable listview using a scrollview.
The layout of each item in the list is created in code and is customizable on a per item basis.
The example is pretty barebones but exhibits purpose.

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Licensed User
Longtime User
database save after creation

Hi Erel,

Not sure how to start a new thread thay will post in the correct place. All my code works. Just can't find my database at the close of the app. I want to reopen the database that was updated. Does everyone in B4A distroy their database when they close there app. I was hoping someone would have done this and show me what I am going to figure. I have people waiting to see this program so they will have to continue to wait.

Thanks all,



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As i am rather new in B4A i have some pricipal problems with understanding some things.

After some days of working with B4A i have a test app, which makes all things i will be tested.

Most of them works, but now i tried since hours to make a scrollable list with text AND pictures in a TabHost - but can't work it out.
The TabHost works, the different views etc. are loaded and so, this is good.

Searched through MB of examples, but no one semmes to be fitting to my belonging,to make this text pictures scrollable - so that i could use it as a base for the own development.

Is there a (best) simple command for that or has anyone a function, that woul d work ?

Thx in advance


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Longtime User
Thx...this will help a little bit, but still cant put text and pics.

I ask in the thread of the CustomListView-part to solve that...


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Longtime User
Klaus. In the demo Tabhost & Scrollview the last visible blue line has text “Text1 line # 14” but must be “Text1 line # 15”. Similarly the last visible red line has text “Text2 line # 19” but must be “Text2 line # 20”. So we cannot see all rows. How to repair this?
Last edited:


Licensed User
Longtime User
You are right !
The end of the filling routines should be :
scvTest1.Panel.Height = i * lblHeight1
instead of:
    scvTest1.Panel.Height = i1 * lblHeight1
Same for scvTest2.

Updated the program in the original post here.

Best regards.


Licensed User
Longtime User
i am trying to use the use scroolview with design tools

but I do not understand how to draw the interface.

I have a group of buttons and labels and want to be sure you can see everything in the various video resolutions.



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Licensed User
Longtime User
You have different possibilities, the two below and any combination:

- add all views in the code
add the ScrollView onto the Activity
add all the views onto the ScrollView.Panel
set the ScrollView.Panel.Height

- define one layout with the ScrollView and a second layout with a Panel containing the different views, this Panel can be heigher than the ScrollView.
load the ScrollView layout onto the Activity
load the Panel layout onto the ScrollView.Panel
set the ScrollView.Panel.Height to the Panel.Height

Best regards.


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Can anybody tell me how can i center my listview in tabhost ? or how can i determinate the tab bottom value and tabhost bottom value ?
here is my code :

Sub Activity_Create(FirstTime As Boolean)
'Do not forget to load the layout file created with the visual designer. For example:
Dim pet,paper,cfg,tv,other As Bitmap

pet=LoadBitmap(File.DirAssets, "pet.png")
cfg =LoadBitmap(File.DirAssets,"config.png" )
other=LoadBitmap(File.DirAssets,"other.png" )


Activity.AddMenuItem("Disconnect", "mnuDisconnect")

For i = 1 To 300
lv1.AddSingleLine("Item #" & i)
Activity.AddView(lv1, 20%x ,0, 100%x, 30%y)


End Sub

There is any possibility to populate each tab in tabhost with labels or images ?
Thank you


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Is it possible to get the scrolled percentage or position of the ScrollView ?
I want to make a tab(1) of a tabhost only then visible if the scrollview of the previous tab(0) is scrolled to 100% (maybe 95%)


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Longtime User

I "found" the ScrollChanged-Event
Sub InfosSV_ScrollChanged (Position As Int)
If InfosSV.ScrollPosition  > 6050 Then
End If
End Sub

But how to disable/enable a single TabHost.Tab ?
I start a new question