Bah。过去几天,我已经把这个问题拉过来了,但我知道我必须忽视这个明显的问题。我做了我的PickerViewController(.H。/ M)和PickerViewAppDelegate(.H/.M)文件,它们运行良好作为一个独立的程序,但我想有选择器弹出后procedureal事件发生我“ helloworld.m“文件。我可以让选择器出现,但是我不能为了我的生活而弄清楚如何填充它以便它不是空白的。我想我已经做了所有的事情,直到我尝试将我的数组传递给我的pickerview对象。我究竟做错了什么?如何将数组传递给UIPickerView从一个类到另一个类?
PickerViewController.h
#import <UIKit/UIKit.h>
@interface PickerViewController : UIViewController <UIPickerViewDataSource, UIPickerViewDelegate> {
IBOutlet UIPickerView *pickerView;
NSMutableArray *scrollerData;
}
@property (nonatomic, retain) IBOutlet UIPickerView *pickerView;
@property (nonatomic, retain) NSMutableArray *scrollerData;
-(void)setScrollerData:(NSMutableArray *)array;
@end
PickerViewController.m
#import "PickerViewController.h"
@implementation PickerViewController
@synthesize pickerView, scrollerData;
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
self.pickerView.delegate = self;
self.pickerView.dataSource = self;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview
// Release anything that's not essential, such as cached data
}
- (void)dealloc {
// [arrayColors release];
[super dealloc];
}
-(void)setScrollerData:(NSMutableArray *)array
{
//[self.scrollerData arrayByAddingObjectsFromArray:array];
scrollerData = array;
}
#pragma mark -
#pragma mark Picker View Methods
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)thePickerView {
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)thePickerView numberOfRowsInComponent:(NSInteger)component {
return [scrollerData count];
}
- (NSString *)pickerView:(UIPickerView *)thePickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [scrollerData objectAtIndex:row];
}
- (void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
NSLog(@"Selected Number: %@. Index of selected numbers: %i", [scrollerData objectAtIndex:row], row);
}
PickerViewAppDelegate.h
#import <UIKit/UIKit.h>
@class PickerViewController;
@interface PickerViewAppDelegate : NSObject <UIApplicationDelegate> {
UIWindow *window;
PickerViewController *pvController;
}
@property (nonatomic, retain) IBOutlet UIWindow *window;
@end
PickerViewAppDelegate.m
#import "PickerViewAppDelegate.h"
#import "PickerViewController.h"
@implementation PickerViewAppDelegate
@synthesize window;
- (void)applicationDidFinishLaunching:(UIApplication *)application {
pvController = [[PickerViewController alloc] initWithNibName:@"PickerView" bundle:[NSBundle mainBundle]];
[window addSubview:pvController.view];
// Override point for customization after application launch
[window makeKeyAndVisible];
}
- (void)dealloc {
[pvController release];
[window release];
[super dealloc];
}
@end
Helloworld.m
...
UIView* view = [[CCDirector sharedDirector] openGLView];
UIPickerView *pickerView=[[UIPickerView alloc] init];
pickerView.frame=CGRectMake(100,100, 200, 200);
NSMutableArray *arrayNumbers = [[NSMutableArray alloc] init];
[arrayNumbers addObject:@"30"];
[arrayNumbers addObject:@"31"];
[arrayNumbers addObject:@"32"];
[arrayNumbers addObject:@"33"];
[arrayNumbers addObject:@"34"];
[arrayNumbers addObject:@"35"];
[arrayNumbers addObject:@"36"];
[pickerView setscrollerData: arrayNumbers];//Should I be calling pickerView here or something else?
[view addSubview: pickerView];
pickerView.hidden=NO;
...
好吧,现在我感觉非常愚蠢的,但我给我最好的拍摄。当我从@synthesize中移除setScrollerData时,我在头文件中得到一个警告,告诉我需要写一个方法或合成它。我想这就是为什么我加了它,尽管当时对我来说没有意义。你可以扩展你的意思吗?“添加一个新的选择器,而不是使用xib中的一个”?我想使用PVC中的那个,但不知道如何让选取器视图激活。如果我不尝试传递任何值,选择器视图会弹出,但它只是空白。 – PWiggin
已更新的答案。我假定你好世界是一个视图控制器或等价物。 – jrturton
cocos2d问题是为什么我使用它作为子视图。我不相信UIPickerView与其他CCNode兼容,所以解决方法是将其设置为子视图。至于实例化pickerviewcontroller,我是否正确理解我应该使用“PickerViewController * pickerView = [[PickerViewController alloc] init];”“来为picker分配内存? – PWiggin