將NSMutableArray傳遞給另一個視圖控制器

Question

我想在兩個視圖控制器之間傳遞一個NSMutableArray。請讓我知道我可以爲這個

做在PlaylistViewController.h文件我有

NSMutableArray *SongArray; 
@property(nonatomic,retain)NSMutableArray *SongArray; 

我希望傳遞到另一個視圖控制器

Answer 1

您可以通過兩種方式分享：

1. 使用屬性

實施例

在.H文件

@interface ABCController : UIViewController 
    { 
     NSMutableArray *detailArray; 
    } 
    @property(nonatomic,retain)NSMutableArray *detailArray; 

在的.m文件

XYZController *xyzVC = [[XYZController alloc] initWithNibName:@"XYZController" bundle:nil];  
    xyzVC.detailArray = self.detailArray; 

    [self.navigationController pushViewCsecondView:xyzVC animated:YES]; 


    **XYZController.h** 

    @interface XYZController : UIViewController 
    { 
     NSMutableArray *detailArray; 
    } 

@property(nonatomic,retain)NSMutableArray *detailArray; 

使用NSUserDefaults

例

 [[NSUserDefaults standardUserDefaults] setValue:SongArray forKey:@"songArray"]; 
    [[NSUserDefaults standardUserDefaults] synchronize]; 

    NSMutableArray *arr = [[NSUserDefaults standardUserDefaults] valueForKey:@"songArray"]; 

Answer 2

**FirstViewController.h** 

@interface FirstViewController : UIViewController 
{ 
    NSMutableArray *SongArray; 
} 
@property(nonatomic,retain)NSMutableArray *SongArray; 

**FirstViewController.m** 

SecondViewController *secondView = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];  
secondView.SongArray = self.SongArray; 

[self.navigationController secondView animated:YES]; 


**SecondViewController.h** 

@interface SecondViewController : UIViewController 
{ 
    NSMutableArray *SongArray; 
} 
@property(nonatomic,retain)NSMutableArray *SongArray; 

Answer 3

讓您NSMutableArray的財產和合成它。

而且這是在你的課程成爲對象之後。

PlaylistViewController *PLVC = [[PlaylistViewController alloc] init]; 
PLVC.SongArray=yourAry; 
[self.navigationController pushViewController:PLVC animated:YES]; 

Answer 4

在secondViewController中創建一個NSMutableArray屬性secondMutArray。 在firstViewController中，你想傳遞mutablearray，那裏創建第二個viewcontroller的實例&將self.mutableArray賦值給secondMutArray。 這樣

SecondViewController *secondViewController=[[SecondViewController alloc]init]; 
secondViewController.secondMutArray=self.mutableArray 

Answer 5

假設你想從其他視圖控制器通過NSMutableArray到PlaylistViewController可以說viewcontroller .M那就不要考慮Controller.m或者以下

PlaylistViewController *play=[[PlaylistViewController alloc]initwithnibname:@"PlaylistViewController"]; 

play.SongArray=arrayofSongsWhichYouWantToPass; 

[self.navigationController pushViewController:play animated:YES]; 

Answer 6

你可以設置你希望視圖控制器傳遞數組作爲原始視圖控制器的代理（在您的情況下爲PlaylistViewController）

**OriginViewController.h** 

@protocol OriginViewControllerDelegate { 
-(void)passMutableArray:(NSMutableArray*)array; 
} 

@interface OriginViewController : UIViewController 

@property(nonatomic,retain)id<OriginViewControllerDelegate> delegate; 
@property(nonatomic,retain)NSMutableArray *array; 

**OriginViewController.m** 

//set DestinationViewController as delegate to OriginViewController(not necessarily in OriginViewController.m 
//When you want to pass array just send message to delegate 
[self.delegate passMutableArray:array]; 

**DestinationViewController.h** 

@interface DestinationViewController : UIViewController <OriginViewControllerDelegate> 
//implement protocol function in your m file 

**DestinationViewController.m** 

-(void)passMutableArray:(NSMutableArray*)array { 
//Do whatever you want with the array 
}