Real iOS Apps with Source Code - Power Workshop Series

Create a simple calculator user interface in storyboard, arrange digit and operator buttons, adjust fonts and symbols, and wire the display outlet and digit/operator actions in the view controller.

Learn to implement an iOS calculator with display and operations, handling digit entry, decimal points, and binary/unary operations (plus, minus, multiply, divide, square, square root), plus clear and equals.

Explore building an Apple Watch calculator and compare it to iPhone layouts, focusing on differences in interface constraints and button events without sender, using horizontal groups to arrange the keypad.

Implement digit entry for a calculator on a watch kit using a backing display string linked to a WKInterfaceLabel. Prevent multiple decimal points and keep the display synchronized.

Set up operator keys and implement equals to compute operand one and two from the display. Show the result on the watch calculator and handle clear behavior for repeated equals.

Develop a memory game UI by drawing a colorful pie chart with up to 10 randomized color slices, handling user taps and a dynamic prompt while converting degrees to radians.

Draws the view by computing the center, radius, and slice angles, fills arcs with a bezier path and random red, green, and blue colors, rendering multiple slices that refresh.

Derive the view bias by highlighting selected slices, generate a random tune from nine tones, play the sequence with timers, and compare user input to the generated tune.

Explore how a circular tune game maps single taps to slices, generates tones from a pool, plays notes, and compares user input with the target tune.

Storyboard setup guides building a converter app with a table view of conversions, a plus button to add new ones, and segues to a convert screen for from-to input.

Set up a model with a conversions dictionary and wire it to a table view that lists keys like meters to feet, while handling segues for adding and converting values.

Learn to implement an adding controller with a delegate, pass new conversions (from unit, to unit, factor) to the root view, validate input via alerts, and refresh the table view.

Save simple app data with a list by writing a dictionary of conversions to a plist via the file manager in the documents directory, with add and delete functionality.

Explore building a calculator with a stack data structure implemented as a linked list of nodes, using push and pop to evaluate expressions and handle binary and unary operations.

This lecture introduces the first stack implementation for a calculator, defining a node with double data and next and a top pointer to support push and pop.

The lecture explains the calculator view controller, using a stack and an operator stack to manage digits and operations, with states like cleared and digit entry, and left-to-right evaluation.

Explore SKView setup in SpriteKit by building a one-player pong game for iPhone, replacing storyboard, presenting the main scene, and enabling live diagnostics like fps and node count.

Set up the main SpriteKit scene with a physics contact delegate, and initialize the ball with position and impulse, plus category masks for ball, paddle, wall, and miss detector.

Set up the SKScene with zero gravity, place the paddle, ball, and detectors, enable a non-dynamic paddle with an edge loop, and drive the paddle with touches moved.

Detect collisions by examining physics contact between ball, paddle, and miss detector via body, bodyB, and category masks, then raise difficulty with velocity and paddle size while tracking high scores.