I'm pretty new to Objective-C and iOS so I've been playing around with the Picker View. I've defined a Person Class so that when you create a new Person it automatically gives that person a name and age.
#import "Person.h"
@implementation Person
@synthesize personName, age;
-(id)init
{
self = [super init];
if(self)
{
personName = [self randomName];
age = [self randomAge];
}
return self;
}
-(NSString *) randomName
{
NSString* name;
NSArray* nameArr = [NSArray arrayWithObjects: @"Jill Valentine", @"Peter Griffin", @"Meg Griffin", @"Jack Lolwut",
@"Mike Roflcoptor", @"Cindy Woods", @"Jessica Windmill", @"Alexander The Great",
@"Sarah Peterson", @"Scott Scottland", @"Geoff Fanta", @"Amanda Pope", @"Michael Meyers",
@"Richard Biggus", @"Montey Python", @"Mike Wut", @"Fake Person", @"Chair",
nil];
NSUInteger randomIndex = arc4random() % [nameArr count];
name = [nameArr objectAtIndex: randomIndex];
return name;
}
-(NSInteger *) randomAge
{
//lowerBound + arc4random() % (upperBound - lowerBound);
NSInteger* num = (NSInteger*)(1 + arc4random() % (99 - 1));
return num;
}
@end
Now I want to make an array of Persons so I can throw a bunch into the picker, pick one Person and show their age. First though I need to make an array of Persons. How do I make an array of objects, initialize and allocate them?
There is also a shorthand of doing this:
NSArray *persons = @[person1, person2, person3];
It's equivalent to
NSArray *persons = [NSArray arrayWithObjects:person1, person2, person3, nil];
As iiFreeman said, you still need to do proper memory management if you're not using ARC.