Tag: android

B4A Tutorials – User Validation Part 1

B4A User Validation In this tutorials, I will teach you how to validate users which will come in handy if you are developing an application that requires user login. Validation helps to check that users enter the required characters, and more. Through part 1 of this tutorial, you will have an idea about TRIM keyword, […]

B4A Tutorial – How color is assigned to Contacts initials

In this Video tutorial , i show you how to grab initials of an app user and apply colors to it like how emails like gmail or telegram does it in the absence of a profile picture.   Through this course, you will learn how to use select case and charAt and create a layout. […]

B4A for beginners – Math Operators

B4A Tutorials on Math Operators Math Operators are used to perform operations, for example if you define a variable like this: Dim purchases As Double = 245.00 Dim discount As Double = 15.00 Dim totalAmount As Double purchases = 245.00 discount = 15.00 Now before you can get  the total amount payable, you have to […]


Variables hold data (store) in computers memory for easy accessibility. Just as in algebra where you will have an equation like x + 2 = 4  where x represents a figure, so as in programming, there are ways to temporarily assign/store data into variable and access it anytime. Now lets go back to b4a. Before […]