Cocoa Development

... an introduction

by Lieven Dekeyser

Last time

• AppKit
• Interface Builder
• Reuse existing components
• Easy to build powerful applications

Part 3

• Custom Views
• Cocoa Bindings
• Key-Value coding

Example: Custom Views

• Demo Time
• Implement - (void)drawRect:(NSRect)rect;
• NSBezierPath, NSGradient, NSShadow,...
• You can also use CoreGraphics

Example: Preferences

• Demo Time
• Bind control values to Shared User Defaults controller
• Storage in ~/Library/Preferences/<your.bundle.identifier>.plist

Key-Value coding

• Access an object's properties by its name
• - (id)valueForKey:(NSString *)name;
• - (void)setValue:(id)value forKey:(NSString *)name;
• Default implementation uses selectors for accessors:
  • - (id)<propertyName>;
  • - (NSString *)set<PropertyName>:(id)value;

Example: Table Views

• Demo Time: the old way
• Demo Time: using key-value coding
• Demo Time: using bindings