iphone - 如何从NSMutablearray提取值并将其放入NSArray？

我有NSMutableArray如下所示：

在.h中

@property (nonatomic,retain) NSMutableArray *arrReceipes;

在.m中

@synthesize arrReceipe;

方法内部

arrReceipes = [[NSMutableArray alloc] init];
NSArray *arrReceipesTime1;
NSArray *arrReciepHeart;
NSArray *arrRecipeLifestyle;

arrReceipesTime1 = [NSArray arrayWithObjects:@"Half an hour or less",@"About an     hour",@"More than an hour", nil];

NSDictionary *arrReceipeTime1Dict = [NSDictionary dictionaryWithObject:arrReceipesTime1 forKey:@"Find Recipes"];

arrReciepHeart = [NSArray arrayWithObjects:@"HealthyAndDelicius", nil];
NSDictionary *arrRecipesHeartDict = [NSDictionary dictionaryWithObject:arrReciepHeart   forKey:@"Find Recipes"];

arrRecipeLifestyle = [NSArray arrayWithObjects:@"Recipe for fall",@"Quick and   easy",@"Cooking for kids",@"Easy entertaining",@"American classics",@"Outdoor cooking",   nil];
NSDictionary *arrRecipeLifestyleDict = [NSDictionary dictionaryWithObject:arrRecipeLifestyle forKey:@"Find Recipes"];

[arrReceipes addObject:arrReceipeTime1Dict];
[arrReceipes addObject:arrRecipesHeartDict];
[arrReceipes addObject:arrRecipeLifestyleDict];

那就是“ arrReceipes”是我的NSMutable数组。

现在，我想提取“ arrReceipes”的值/字符串并将其放入“ NSArray * somevariable”。

我怎样才能做到这一点？

我正在为此：

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"showRecipeDetail"]) {
       NSIndexPath *indexPath = [self.tableView1 indexPathForSelectedRow];
       RecipeDetailViewController *destViewController = segue.destinationViewController;

       destViewController.recipeName = [arrReceipes objectAtIndex:indexPath.row];
    }
}

在上面的第三行中（如果是），如果我在“ main”方法中给“ arrReceipes”它的抛出异常。但是，如果我打算给“ arrReceipes”，那么我会给“ somevariable”它的工作罚款。

希望你理解我的问题。请帮忙。谢谢。

最佳答案

您要放入arrReceipes的对象是字典，因此如果要将destViewController.recipeName传递给这些对象之一，则它应该是字典。

关于iphone - 如何从NSMutablearray提取值并将其放入NSArray？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/13725964/