PickerViewController.h
#import <UIKit/UIKit.h>
@interface PickerViewController : UIViewController
<UIPickerViewDelegate, UIPickerViewDataSource>
@property (nonatomic, strong) IBOutlet UIPickerView *modelPicker;
@property (nonatomic, strong) NSArray *modelArray;
@property (nonatomic, strong) NSArray *memoryArray;
@property (nonatomic, strong) IBOutlet UILabel *modelLabel;
@property (nonatomic, strong) IBOutlet UILabel *memoryLabel;
@end
PickerViewController.m
#import "PickerViewController.h"
@interface PickerViewController ()
@end
@implementation PickerViewController
@synthesize modelPicker, memoryArray, modelArray;
@synthesize memoryLabel, modelLabel;
- (void)viewDidLoad
{
[super viewDidLoad];
self.modelArray = [[NSArray alloc] initWithObjects:
@"iPad WiFi", @"iPad WiFi+3G (AT&T)",
@"iPad WiFi+3G (Verizon)", nil];
self.memoryArray = [[NSArray alloc] initWithObjects:
@"16GB", @"32GB", @"64GB", nil];
}
#pragma mark -
#pragma mark PickerView DataSource
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
return 2;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
if (component == 0) {
return [modelArray count];
}
return [memoryArray count];
}
- (NSString *)pickerView:(UIPickerView *)pickerView
titleForRow:(NSInteger)row
forComponent:(NSInteger)component
{
if (component == 0) {
return [modelArray objectAtIndex:row];
}
return [memoryArray objectAtIndex:row];
}
#pragma mark -
#pragma mark PickerView Delegate
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row
inComponent:(NSInteger)component
{
if (component == 0)
{
NSString *resultString = [[NSString alloc] initWithFormat:
@"Model: %@",
[modelArray objectAtIndex:row]];
self.modelLabel.text = resultString;
} else {
NSString *resultString = [[NSString alloc] initWithFormat:
@"Memory: %@",
[memoryArray objectAtIndex:row]];
self.memoryLabel.text = resultString;
}
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
self.memoryArray = nil;
self.modelArray = nil;
self.modelLabel = nil;
self.memoryLabel = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
@end
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