链接到 UIViewController 的自定义 UIView - 如何处理按钮操作

Question

我对在 UIViewController 和 UIView 之间拆分组件感到困惑。假设我用子视图制作了自定义 UIView：

@interface CustomView : UIView

@property(strong, nonatomic) UITextField *textField;
@property(strong, nonatomic) UIButton *button;
@property(strong, nonatomic) UIImageView *image;

@end

我想在控制器中实现的是在从视图中按下按钮后，我从 textField 中获取值并推送新的 navigationController。但我不知道如何正确地做到这一点。我现在正在尝试的是：

@implementation CustomViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    CustomView *customView = [[CustomView alloc] init];
    [customView.searchButton addTarget:self action:@selector(didPushSearchButton) forControlEvents:UIControlEventTouchUpInside];
    self.view = customView;
}

- (void)didPushSearchButton {
    //pushing new viewController, but how can i get value from text field here?
}

@end

我能以某种方式对 CustomViewController 说它的视图是 CustomView 类型吗？那时我将能够获得 textField 的值，因为我可以键入 self.view.textField。现在在输入 self.view 之后 - ViewController 对 textField 一无所知...

Answer 1

如果您不使用情节提要或 .xib 文件，请尝试以下操作：

// CustomViewController.h
@interface CustomViewController : UIViewController

@property (strong, nonatomic) CustomView *view;

@end

// CustomViewController.m
@implementation CustomViewController

@dynamic view;

- (void)loadView {
    CustomView *customView = [[CustomView alloc] initWithFrame:UIScreen.mainScreen.applicationFrame];
    [customView.searchButton addTarget:self action:@selector(didPushSearchButton) forControlEvents:UIControlEventTouchUpInside];
    self.view = customView;
}

@end

（修改自“Overriding uiviewcontroller's view property, done right”）