未将对象添加到NSMutableArray目标-C [英] Objects not being added to NSMutableArray Objective -C
问题描述
我试图将对象简单地添加到可变数组中,但是它们不会插入.我没有收到错误或任何东西,也无法弄清楚到底是怎么回事.
I'm trying to simply add objects to a mutable array but they WILL NOT insert. I'm not getting errors or anything and I can't figure out whats going on.
在主委托文件中,我将数组分成4个单独的字符串.
In my main delegate file I split an array into 4 separate strings like so.
NSArray *split=[currentParsedCharacterData componentsSeparatedByString:@"|"];
NSLog([split objectAtIndex:3]);
NSString *date=[split objectAtIndex:0];
NSString *venue=[split objectAtIndex:1];
NSString *event=[split objectAtIndex:2];
NSString *city=[split objectAtIndex:3];
我已经找到了字符串值,它们肯定在那里.
I've traced out the string values and they are definitely there.
接下来,我尝试将这些字符串值添加到可变数组
Up next I try to add these string values to mutable arrays
[self.promoTabOptionEvents.dates addObject:date];
[self.promoTabOptionEvents.venues addObject:venue];
[self.promoTabOptionEvents.event addObject:event];
[self.promoTabOptionEvents.city addObject:city];
当我在调试器中检查数组时,它们为空.我在做什么错了?
When I check the arrays in the debugger they are empty. What am I doing wrong?
promoTabOptionEvents类如下
promoTabOptionEvents class looks like this
@interface PromoTabOptionEvents : UIViewController {
NSString *event_headline;
NSMutableArray *dates;
NSMutableArray *venues;
NSMutableArray *event;
NSMutableArray *city;
}
@property(nonatomic,retain)NSString *event_headline;
@property(nonatomic,retain)NSMutableArray *dates;
@property(nonatomic,retain)NSMutableArray *venues;
@property(nonatomic,retain)NSMutableArray *event;
@property(nonatomic,retain)NSMutableArray *city;
-(void)applyLabels;
-(id)initWithTabBar;
@end
#import "PromoTabOptionEvents.h"
@implementation PromoTabOptionEvents
@synthesize event_headline;
@synthesize dates;
@synthesize venues;
@synthesize event;
@synthesize city;
-(id) initWithTabBar {
if ([self init]) {
//this is the label on the tab button itself
//self.title = @"Tab1";
//use whatever image you want and add it to your project
self.tabBarItem.image = [UIImage imageNamed:@"events.png"];
// set the long name shown in the navigation bar
self.navigationItem.title=@"Events";
CGRect bgframe;
bgframe.size.width=320; bgframe.size.height=460;
bgframe.origin.x=0; bgframe.origin.y=0;
UIImage* bgimage = [UIImage imageNamed:@"eventsbig.png"];
UIImageView *imagebgview = [[UIImageView alloc] initWithImage: bgimage];
imagebgview.frame=bgframe;
imagebgview.contentMode=UIViewContentModeScaleAspectFit;
self.view.backgroundColor=[UIColor whiteColor];
[self.view addSubview:imagebgview];
}
return self;
}
推荐答案
能否在初始化NSMutableArray实例的位置添加代码?我认为您可能忘记了初始化数组,而您的addObject调用被吞没了,没有任何效果.
Can you add the code where you initialize your NSMutableArray instances? I think you might have forgotten to initialise the arrays and your addObject calls are being swallowed up with no effect.
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