Tuning for Speed - iOS Core Animation - page 264

time rather than preloading them using the -imageNamed: method. We've also added some
layer shadows to make our list a bit more visually appealing. Listing 12.1 shows the initial,
naive implementation.
Listing 12.1 A Simple Contacts List Application with Mock Data
#import "ViewController.h"
#import <QuartzCore/QuartzCore.h>
@interface ViewController () <UITableViewDataSource>
@property ( nonatomic , strong ) NSArray *items;
@property ( nonatomic , weak ) IBOutlet UITableView *tableView;
@end
@implementation ViewController
- ( NSString *)randomName
{
NSArray *first = @[ @"Alice" , @"Bob" , @"Bill" , @"Charles" ,
@"Dan" , @"Dave" , @"Ethan" , @"Frank" ] ;
NSArray *last = @[ @"Appleseed" , @"Bandicoot" , @"Caravan" ,
@"Dabble" , @"Ernest" , @"Fortune" ] ;
NSUInteger index1 = ( rand ()/( double ) INT_MAX ) * [first count ];
NSUInteger index2 = ( rand ()/( double ) INT_MAX ) * [last count ];
return [ NSString stringWithFormat : @"%@ %@" , first[index1], last[index2]];
}
- ( NSString *)randomAvatar
{
NSArray *images = @[ @"Snowman" , @"Igloo" , @"Cone" ,
@"Spaceship" , @"Anchor" , @"Key" ] ;
NSUInteger index = ( rand ()/( double ) INT_MAX ) * [images count ];
return images[index];
}
- ( void )viewDidLoad
{
[ super viewDidLoad ];
//set up data
NSMutableArray *array = [ NSMutableArray array ];
for ( int i = 0 ; i < 1000 ; i++)
{
//add name