Question

在我写的应用程序中，我必须显示许多不同文本的不同页面;我宁愿不使用结构基本相同的许多不同观点。

我的想法是，我有一个用于显示纯文本内容的视图，并以编程方式更改标题（显示在导航栏中）和基于按下打开视图的按钮的内容。

我可以通过@IBOutlet将UITextView链接到变量，但我不确定如何引用正在加载的视图来更改它。

Answer 1

如何在目标控制器中为内容和标题创建两个属性，并根据按钮单击填充值。这是这个要求的简单演示。

class ViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib

    self.addButtons()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

// MARK: - Add Buttons

func addButtons() {

    var button1 = UIButton(frame: CGRect(x: 100, y: 100, width: 100, height: 50))
    button1.setTitle("Content 1", forState: UIControlState.Normal)
    button1.backgroundColor = UIColor.redColor()
    button1.tag = 1
    button1.addTarget(self, action : "showContent:", forControlEvents: UIControlEvents.TouchUpInside)
    self.view.addSubview(button1)

    var button2 = UIButton(frame: CGRect(x: 100, y: 200, width: 100, height: 50))
    button2.setTitle("Content 2", forState: UIControlState.Normal)
    button2.backgroundColor = UIColor.blueColor()
    button2.tag = 2
    button2.addTarget(self, action : "showContent:", forControlEvents: UIControlEvents.TouchUpInside)
    self.view.addSubview(button2)
}

func showContent(sender: UIButton!) {
    var displayContentController = DisplayContentController()

    switch (sender.tag) {
    case 1:
        displayContentController.content = "Test Content 1"
        displayContentController.titleText = "Content1"
        break;

    case 2:
        displayContentController.content = "Test Content 2"
        displayContentController.titleText = "Content2"
        break;

    default:
        break;
    }

    self.presentViewController(displayContentController, animated: true,completion: nil)
}

}

class DisplayContentController：UIViewController {

var contentView:UITextView?
var titleLabel:UILabel?
var content: String?
var titleText: String?

override func viewDidLoad() {
    super.viewDidLoad()

    self.addTextView()
    self.addTitleLabel()

    titleLabel?.text = titleText
    contentView?.text = content

    // Do any additional setup after loading the view.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

//MARK:- Add UILabel

func addTitleLabel() {

    titleLabel = UILabel(frame: CGRect(x: 100, y: 5, width: 100, height: 50))
    titleLabel?.textColor = UIColor.whiteColor()
    self.view.addSubview(titleLabel!)
}


//MARK:- Add UITextView

func addTextView() {

    contentView = UITextView(frame: CGRect(x: 5, y: 60, width: 250, height: 250))
    self.view.addSubview(contentView!)
}

}

Answer 2

如果您在故事板中使用segues，则可以将segue的{{1}}作为您拥有的视图控制器类型并将信息传递给它。

destinationController

如何根据切换到它的操作更改UIViewController的属性？

2 个答案: