Question

我有一个自定义组件（带有自己的Controller和自己的xib），它有一个按钮。我是使用this教程制作的。

在主ViewController中，我在ScrollView中有四个这样的组件。我希望应用程序对点击准备segue的按钮作出反应。

我无法从我的自定义组件控制器中做到这一点，因为它是一个UIView，并且无法从自定义组件连接到主ViewController，因为它不是直接的兄弟，还有一个ScrollView。因此，我无法通过Main.storyboard的View Controller中的按钮进行IBAction。

我的目标是，从自定义组件中，在Controller中为Main.storyboard创建一个IBAction，这样我就可以启动一个segue并呈现一个或另一个场景，具体取决于按下用户的按钮。

我怎么能实现这个目标？谢谢。

我的自定义组件控制器：

f(typeMap[paramsTypes[0]](unknownA), b: typeMap[paramsTypes[1]](unknownB))

My Main.storyboard的ViewController：

    import UIKit

    @IBDesignable class CustomView: UIView {

    // Our custom view from the XIB file
    var view: UIView!

    @IBOutlet weak var label: UILabel!
    @IBOutlet weak var icono: UIImageView!
    @IBAction func onClick(sender: UIButton) {
        println("button \(label.text!)")
        switch label.text!{
            case "Text 1":
                println("First component")

            case "Text 2":
                println("Second component")
            case "Text 3":
                println("Third component")
            case "Text 4":
                println("Fourth component")
            default:
                println("Error")
        }
    }
    @IBInspectable var image: UIImage? {
        get {
            return icono.image
        }
        set(image) {
            icono.image = image
        }
    }

    @IBInspectable var text: String? {
        get {
            return label.text
        }
        set (text){
            label.text=text
        }
    }

    func xibSetup() {
        view = loadViewFromNib()

        // use bounds not frame or it'll be offset
        view.frame = bounds

        // Make the view stretch with containing view
        view.autoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight
        //self.view.backgroundColor = UIColor.purpleColor().colorWithAlphaComponent(0)
        self.view.backgroundColor=UIColor.clearColor()
        // Adding custom subview on top of our view (over any custom drawing > see note below)
        addSubview(view)

    }

    func loadViewFromNib() -> UIView {

        let bundle = NSBundle(forClass: self.dynamicType)
        let nib = UINib(nibName: "CustomView", bundle: bundle)
        let view = nib.instantiateWithOwner(self, options: nil)[0] as! UIView

        return view
    }
    /*
    // Only override drawRect: if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
    override func drawRect(rect: CGRect) {
        // Drawing code
    }
    */

    override init(frame: CGRect) {
        // 1. setup any properties here

        // 2. call super.init(frame:)
        super.init(frame: frame)

        // 3. Setup view from .xib file
        xibSetup()
    }

    required init(coder aDecoder: NSCoder) {
        // 1. setup any properties here

        // 2. call super.init(coder:)
        super.init(coder: aDecoder)

        // 3. Setup view from .xib file
        xibSetup()
    }

}

}

Answer 1

从ViewContoller（包含自定义视图）ctrl +拖动到想要在UIView上实例化的ViewController（坐在Scroll视图中）点击。

现在选择segue类型并根据需要命名。当UIView收到轻敲电话时

[self performSegueWithIdentifier:@"segueName" sender:self];

编辑：委托方法

CustomView.h

@protocol ButtonClickDelegate <NSObject>
-(void)didClickButton;
@end

@interface CustomView : UIView
@property(nonatomic, assign) id<ButtonClickDelegate> delegate;
@end

CustomView.m

@implementation CustomView

- (IBAction)buttonClicked:(id)sender {

    //check if delegate implemented the method
    if ([self.delegate respondsToSelector:@selector(didClickButton)])
    {
        //informing the delegate about action
        [self.delegate didClickButton];
    }
}

@end

ContainingViewController.h - 确认ButtonClickDelegate

@interface ContainingViewController : UIViewController<ButtonClickDelegate>

@end

ContainingViewController.m

@interface ContainingViewController ()
@property(nonatomic, strong) CustomView * customView;
@end

@implementation ContainingViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    //instantiate customView
    //set the delegate as self
    self.customView.delegate = self;
}

#pragma mark - ButtonClickDelegate method
-(void)didClickButton
{
    //custom view button was clicked
    //performing the segue
    [self performSegueWithIdentifier:@"segueName" sender:self];
}


@end

如何从ScrollView内部的自定义组件内部使用prepareForSegue？

1 个答案: