ios - 访问从Nib加载的 subview 中的文本字段中的文本

我试图让我的viewcontroller(PersonalListViewController)加载UITableView。页面底部有一个addPersonalItem按钮。当用户按下按钮时，它将从Nib文件中加载UIView(AddItemView)。

在AddItemView上有两个UITextFields。 1)我如何才能从PersonalListViewController中访问在字段中输入的文本，以及2)当用户从屏幕上删除PersonalListViewController时(即在AddItemView上输入文本并按Done)，如何知道AddItemView？

在PersonalListViewController.m中

- (IBAction)addPersonalItem:(id)sender {

        NSArray *subviewArray = [[NSBundle mainBundle] loadNibNamed:@"AddItemView" owner:self options:nil];
        UIView *mainView = [subviewArray objectAtIndex:0];
        [self.view addSubview:mainView];
}

在AddItemView.h中

#import <UIKit/UIKit.h>

@interface AddItemView : UIView  {
    IBOutlet UITextField *itemNameTextField;
    IBOutlet UITextField *quantityTextField;
}

@property (strong, nonatomic) IBOutlet UITextField *itemNameTextField;
@property (strong, nonatomic) IBOutlet UITextField *quantityTextField;

@end

在AddItemView.m中

#import "AddItemView.h"

@implementation AddItemView

@synthesize itemNameTextField;
@synthesize quantityTextField;

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
    }
    return self;
}

最佳答案

试试这个，
通过AddItemView定义一个块

typedef void (^completionBlock)(NSString *itemName, NSString *quantity);

添加此块的属性

@property (nonatomic, strong) completionBlock completionCallback;

所以，在
AddItemView.h

#import <UIKit/UIKit.h>

typedef void (^completionBlock)(NSString *itemName, NSString *quantity);

@interface AddItemView : UIView  {
    IBOutlet UITextField *itemNameTextField;
    IBOutlet UITextField *quantityTextField;
}

@property (strong, nonatomic) IBOutlet UITextField *itemNameTextField;
@property (strong, nonatomic) IBOutlet UITextField *quantityTextField;
@property (nonatomic, strong) completionBlock completionCallback;

- (IBAction)completionButtonAction:(id)sender;

@end

在UIButton中添加一个AddItemView，并在其中执行一个类似于

- (IBAction)completionButtonAction:(id)sender {
     if (self.completionCallback != nil) {
         NSString *itemName = self.itemNameTextField.text;
         NSString *quantity = self. quantityTextField.text;
         self.completionCallback (itemName, quantity);
     }
}

在PersonalListViewController.m中

- (IBAction)addPersonalItem:(id)sender {

    NSArray *subviewArray = [[NSBundle mainBundle] loadNibNamed:@"AddItemView" owner:self options:nil];
    AddItemView *mainView = (AddItemView *)[subviewArray objectAtIndex:0];
    void (^completionBlock)(NSString *itemName, NSString *quantity) = ^(NSString *itemName, NSString *quantity){
        [self personalItemAddedWithItemName:itemName quantity:quantity];
    };
    mainView.completionCallback = completionBlock
    [self.view addSubview:mainView];
}


- (void)personalItemAddedWithItemName:(NSString *)itemName quantity:(NSString *)quantity {
    //add your code here
}

关于ios - 访问从Nib加载的 subview 中的文本字段中的文本，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/21104877/