如何将值从UIViewController传递给UIView？

我已经creted一个UIView子类：如何将值从UIViewController传递给UIView？

@interface GraphClass : UIView 
{ 
    NSString *str; 
}

，我已经指派GraphClass：给名为UIViewController类的观点：

@interface GraphViewController : UIViewController 
{ 


}

现在我想传递的NSString *量，值从另一个

@interface MonthsListController : UIViewController 
{ 
} 
in viewDIdLoad 

- (void)viewDidLoad 
{ 
GraphClass *graph = [[GraphClass alloc]init]; 

graph.str = @"abc";

但UIViewController类我得到NULL值，如果我打印GraphClass

STR值

-(void)drawRect:(CGRect)rect 
{ 
    NSLog(@"Amount is = %@",str);//NULL VAlue :(
} 
}

来源

2012-02-13 Shreedhar

仅有[搜索] （https://www.google.com/search?q=%40property+and+%40synthesize）for @ @ property' and'@ synthesize' ke ywords。 – 2012-02-13 12:54:02

有很多方法可以做到这一点。尝试在'AppDelegate'中使用'str'，这样就可以轻松保存或打印值。让我知道它是否有帮助。 – Illep 2012-02-13 12:57:30

是啊阿迪尔我已经设置属性也:(:(＃）（＃）（＃）（＃）（＃）（＃）（＃）（＃）（＃）（＃）（＃）或代码：（ – Shreedhar 2012-02-13 12:57:53

MonthsListController.h

#import GraphClass.h 

GraphClass *graph; 

@property(nonstatic,retain)GraphClass *graph;

MonthsListController.m

@synthesis graph;

viewDidLoad中

self.graph= [[GraphClass alloc]init]; 
[self.graph str:@"xx"];

- （无效）的drawRect：（的CGRect）RECT

NSLog(@"%@",graph.str);

来源

2012-02-13 13:10:34 Illep

没有工作 – Shreedhar 2012-02-13 13:12:16

#import "GraphClass.h"

//在UIViewController类

GraphClass *graph = [[GraphClass alloc] init]; 

graph.recStr=Amount; 

[self.view addSubview:graph];

//在GraphClass

@interface GraphClass : UIView 
{ 
    NSString *recStr; 
} 

@propery (nonatomic,strong) NSString *recStr;

来源

2015-08-19 10:31:39

如何将值从UIViewController传递给UIView？

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