Objective c NSViewController.view（子视图）设置标签

每次我按下一个按钮，mainController都会调用[self.view addSubview:createCustomView.view]。这里一切都很好。问题是我需要在我创建的每个子视图上放置一个标记，以便以后检索它们。我已经试过了：

MainController.m

NSNumber *i;
createCustomView.view.tag = i; //readonly

我真正想做的是：

int i;
[createCustomView.view setTag:i];

但是setTag方法不存在。我的问题是：除了使用标识符字符串（这会给我的情况带来一些问题）之外，还有其他方法可以做到这一点吗

提前谢谢

这是控制器的.h文件

#import <Foundation/Foundation.h>
#import "TransactionButtonView.h"
@class TransactionButtonController;
@interface TransactionViewController : NSViewController
{
TransactionButtonController *transactionButtonController;
}
-(IBAction)createOnPushButton:(id)sender;
-(void)recalculatePositionOnRemove:(long)tag;

@property (nonatomic,assign) TransactionButtonController *transactionButtonController;

@end

#import "TransactionViewController.h"
#import "TransactionButtonController.h"
#import "MainController.h"
@implementation TransactionViewController
@synthesize transactionButtonController;

-(IBAction)createOnPushButton:(id)sender
{
transactionButtonController = [[TransactionButtonController alloc] initWithNibName:@"TransactionButton" bundle:nil];
NSPoint originPoint;

for (int i=1; i <= [[self.view subviews]count]; i++) {
        originPoint.y = transactionButtonController.view.bounds.origin.y + self.view.bounds.size.height - transactionButtonController.view.bounds.size.height*i;
transactionButtonController.view.tag = i; // Here's the PROBLEM!!!
    [[transactionButtonController view]setIdentifier:[[NSNumber numberWithInt:i]stringValue]]; //here's the not good option

}
originPoint.x = transactionButtonController.view.bounds.origin.x;
[[transactionButtonController view] setFrameOrigin:originPoint];
[self.view addSubview:transactionButtonController.view];
[transactionButtonController sendVarsToButton:@"xxx" :@"591" :5 :87456356472456];

}

-(void)recalculatePositionOnRemove:(long)tag
{
NSPoint originPoint;
for (long i = tag; i<[[self.view subviews]count]; i++) {

    originPoint.y = transactionButtonController.view.bounds.origin.y +self.view.bounds.size.height - transactionButtonController.view.bounds.size.height*i;
    originPoint.x = transactionButtonController.view.bounds.origin.x;


     [[transactionButtonController.view viewWithTag:i+1] setFrameOrigin:originPoint];
}
}

@end 

#导入
#导入“TransactionButtonView.h”
@类TransactionButtonController；
@接口事务视图控制器：NSViewController
{
TransactionButtonController*TransactionButtonController；
}
-（iAction）CreateOnButton：（id）发送方；
-（void）重新存储取消删除：（长）标记；
@属性（非原子，赋值）TransactionButtonController*TransactionButtonController；
@结束

这是控制器的.m文件

#import <Foundation/Foundation.h>
#import "TransactionButtonView.h"
@class TransactionButtonController;
@interface TransactionViewController : NSViewController
{
TransactionButtonController *transactionButtonController;
}
-(IBAction)createOnPushButton:(id)sender;
-(void)recalculatePositionOnRemove:(long)tag;

@property (nonatomic,assign) TransactionButtonController *transactionButtonController;

@end

#import "TransactionViewController.h"
#import "TransactionButtonController.h"
#import "MainController.h"
@implementation TransactionViewController
@synthesize transactionButtonController;

-(IBAction)createOnPushButton:(id)sender
{
transactionButtonController = [[TransactionButtonController alloc] initWithNibName:@"TransactionButton" bundle:nil];
NSPoint originPoint;

for (int i=1; i <= [[self.view subviews]count]; i++) {
        originPoint.y = transactionButtonController.view.bounds.origin.y + self.view.bounds.size.height - transactionButtonController.view.bounds.size.height*i;
transactionButtonController.view.tag = i; // Here's the PROBLEM!!!
    [[transactionButtonController view]setIdentifier:[[NSNumber numberWithInt:i]stringValue]]; //here's the not good option

}
originPoint.x = transactionButtonController.view.bounds.origin.x;
[[transactionButtonController view] setFrameOrigin:originPoint];
[self.view addSubview:transactionButtonController.view];
[transactionButtonController sendVarsToButton:@"xxx" :@"591" :5 :87456356472456];

}

-(void)recalculatePositionOnRemove:(long)tag
{
NSPoint originPoint;
for (long i = tag; i<[[self.view subviews]count]; i++) {

    originPoint.y = transactionButtonController.view.bounds.origin.y +self.view.bounds.size.height - transactionButtonController.view.bounds.size.height*i;
    originPoint.x = transactionButtonController.view.bounds.origin.x;


     [[transactionButtonController.view viewWithTag:i+1] setFrameOrigin:originPoint];
}
}

@end 

#导入“TransactionViewController.h”
#导入“TransactionButtonController.h”
#导入“MainController.h”
@实现TransactionViewController
@综合事务按钮控制器；
-（iAction）CreateOnButton：（id）发送方
{
transactionButtonController=[[transactionButtonController alloc]initWithNibName:@“TransactionButton”捆绑包：nil]；
点原点；
对于（int i=1；i如果要向视图添加标记，请执行以下操作：

theView.tag = 1;

要删除它，请执行以下操作：

[[myParentView viewWithTag:1] removeFromSuperview]

事实上，我无法让它工作。每次我都会出现错误：“setter方法需要赋值…”或“只读”。