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您好,我试图在单击后更改设置为 inputAccessoryView 的按钮的高度。

不幸的是,它似乎只改变了位置而不改变高度。

谁能帮我吗?在我的代码下面。

谢谢!

import UIKit

class ViewController: UIViewController, UITextFieldDelegate {



 @IBOutlet var textField: UITextField!

    var SendButton: UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton

    override func viewDidLoad() {
        super.viewDidLoad()

        SendButton.frame = CGRectMake(0, 0, UIScreen.mainScreen().applicationFrame.width, 30)
        SendButton.backgroundColor = UIColor(red: 184/255.0, green: 56/255.0, blue: 56/255.0, alpha: 1)
        SendButton.setTitle("Send", forState: .Normal)
        SendButton.addTarget(self, action: "sendNotification", forControlEvents: UIControlEvents.AllEvents)
    }

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

    func sendNotification(){

        UIView.animateWithDuration(1, animations: {
            self.SendButton.frame = CGRectMake(0, -340, UIScreen.mainScreen().applicationFrame.width, 30)
            self.SendButton.backgroundColor = UIColor(red: 300/255.0, green: 56/255.0, blue: 56/255.0, alpha: 1)
            self.SendButton.setTitle("Hello", forState: .Normal)

        })
    }


    func textFieldDidBeginEditing(textField: UITextField) {
        textField.inputAccessoryView = self.SendButton
    }

}
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1 回答 1

1

在您的动画块中,您正在更改 CGRectMake 中框架的 y 位置,而不是高度。这就是为什么位置在变化而不是高度的原因。

 UIView.animateWithDuration(1, animations: {
 // Your problem is the line below
        self.SendButton.frame = CGRectMake(0, -340, UIScreen.mainScreen().applicationFrame.width, 30) 
    })

函数CGRectMake的函数参数是
CGRectMake(xPosition, yPosition, width, height)

将下面的代码更改为您想要的高度。

   UIView.animateWithDuration(1, animations: {
        self.SendButton.frame = CGRectMake(0, 0, UIScreen.mainScreen().applicationFrame.width, yourDesiredHeight) 
    })

但这无助于更改输入附件的高度。

首先添加一个单独UIView的作为输入附件(增加了高度)并将按钮添加到 thisUIView中。之后为里面的按钮设置动画。这行得通。您可以查看要点中的代码
https://gist.github.com/rakeshbs/539827925df923e41afe

于 2015-01-07T13:04:47.143 回答