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Shuffle Lists & Unique Random Numbers

This tutorial will answer two questions: 1. How to shuffle a list 2. How to generate a set of random numbers that don’t repeat, meaning unique numbers We are going to make an app that will have 4 image sprites in a canvas. The sprites will be moving across the...

List Sorting On App Inventor

This tutorial assumes that you know the basics of list. If not, please go over the basic list tutorial. Also you need to know how to use for each number block. Sorting is arranging of items in a specific order/sequence. There are many algorithms that can be used to...

List Blocks On App Inventor

List is a necessity in almost every app regardless of what programming language you use. This is the easiest way to create and manipulate a set of values/items/elements in an ordered fashion. Please go over the reference before we start. In this tutorial, we will...

For Each With Number On App Inventor

For Each with number is used for doing something a number of times for a given range. There are four slots/arguments in that block which are given. First by default there’s a number slot which is the counter telling you the current iteration/loop number. You can...

For Each Block On App Inventor

For each is pretty simple. You provide a list to loop through and there’s a local variable named “item” given to you that holds the value of an item. Note that you can change the name “item” to anything you like. Remember...