我是 iOS 开发的新手，我想将一个 NSMutableArray 从一个 View Controller 传递到另一个 View Controller ，但总是给我空值
FirstViewController.h
@interface FirstViewController : UIViewController
@property (nonatomic, retain) NSMutableArray *colorArray;
-(IBAction)btn:(id)sender;
FirstViewController.m
@implementation FirstViewController
-(IBAction)btn:(id)sender
{
SecondViewController* secondViewController = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];
secondViewController.animalArray = self.colorArray;
NSLog(@"%@",secondViewController.animalArray); // here its not null
[self.navigationController pushViewController:secondViewController animated:YES];
}
SecondViewController.h
@interface SecondViewController : UIViewController
@property (nonatomic, retain) NSMutableArray *animalArray;
SecondViewController.m
我只用了 NSLog(@"animalArray:%@",self.animalArray);在 viewDidLoad 中检查值但给了我 null
有什么我遗漏的吗？
编辑:
- (void)viewDidLoad
{
[super viewDidLoad];
NSLog(@"indidLoad%@",self.animalArray);
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
NSLog(@"inwillAppear%@",self.animalArray);
}
最佳答案
用下面的方法替换
-(IBAction)btn:(id)sender{
SecondViewController* secondViewController = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];
secondViewController.animalArray=[[NSMutableArray alloc]initWithArray:self.colorArray];
[self.navigationController pushViewController:secondViewController animated:YES];
}
:) +1
关于iphone - 将 NSMutableArray 传递给另一个 View ，给出空值，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17855069/