Ios 从另一个视图控制器使用可变数组

我四处寻找，找到了一些答案，但没有一个有效，我不知道我是否遗漏了什么。出于某种原因，

惩罚.castigos

以及playersView.players在代码中此时为零：

在GameViewController.m中：

#import "SetPlayersViewController.h"
#import "SetPunishmentsViewController.h"

SetPlayersViewController *playersView = [[SetPlayersViewController alloc] init];
SetPunishmentViewController *Punish = [[SetPunishmentViewController alloc] init];
NSMutableArray *punishments = Punish.castigos;
NSMutableArray *playersOn = playersView.players;
int pickCard = arc4random() % numCards;
int playr = arc4random() % [playersOn count];//here is where i get EXC_ARITHMETIC(code=EXC = i386 DIV..)
int punsh = arc4random() % [punishments count];

@synthesize players;

//in view did load
players = [[NSMutableArray alloc] initWithObjects:@"A",@"B",nil];

在SetPlayerViewController.h中：

@interface SetPlayersViewController : UIViewController {
NSMutableArray *players;
}
@property (nonatomic,retain) NSMutableArray *players;

在SetPlayerViewController.m中：

#import "SetPlayersViewController.h"
#import "SetPunishmentsViewController.h"

SetPlayersViewController *playersView = [[SetPlayersViewController alloc] init];
SetPunishmentViewController *Punish = [[SetPunishmentViewController alloc] init];
NSMutableArray *punishments = Punish.castigos;
NSMutableArray *playersOn = playersView.players;
int pickCard = arc4random() % numCards;
int playr = arc4random() % [playersOn count];//here is where i get EXC_ARITHMETIC(code=EXC = i386 DIV..)
int punsh = arc4random() % [punishments count];

@synthesize players;

//in view did load
players = [[NSMutableArray alloc] initWithObjects:@"A",@"B",nil];

---

这是因为UIViewController的延迟初始化

只有在有人调用view属性后，才会加载

UIViewController

的视图。 因此，只有在有人调用view属性之后才会调用

viewDidLoad

方法

---

你应该在视图控制器f.e.的

init

方法中初始化你的数组。

你在

viewDidLoad

中实例化

players

，当你访问可变数组时，视图很可能没有加载。只需在

initWithNibName:bundle:

中alloc/init数组。请参阅我的答案，它描述了viewcontroleer、view controller life cyclewait中的调用顺序，所以我有点迷路了。我必须添加什么代码以及在哪里？您是否在视图控制器中创建了init方法？将玩家数组的初始化放在该方法中读取问题是NSMutableArray中的push.castigos*pumpions=pump.castigos；是nil，我不明白您希望我在init方法中初始化什么，而且我忘了指定GameViewController中的代码。h是一个只需按一下按钮即可调用的方法，而不是ViewDidLoad