雨燕化妝標籤重疊狀態欄

Question

我有這樣的標籤在斯威夫特

let top_error_rep: UILabel = { 
    let lb = UILabel() 
    lb.text="Password should be at least 6 charachters" 
    lb.textColor = UIColor(r: 230, g: 230, b: 230) 
    lb.backgroundColor = .red 
    return lb; 
}() 

我展示它，只有當用戶輸入少於6個字符。現在，當我顯示狀態欄與輸入重疊時，我該如何防止這種情況發生？

這是怎麼看起來像

Answer 1

1. 設置標籤的位置。

將標籤添加到視圖的子視圖後。您需要使用像這樣的約束來設置它的位置：

top_error_rep.topAnchor.constraint(equalTo: self.topAnchor).isActive = true 
top_error_rep.leftAnchor.constraint(equalTo: self.leftAnchor).isActive = true 
top_error_rep.rightAnchor.constraint(equalTo: self.rightAnchor).isActive = true 
top_error_rep.heightAnchor.constraint(equalToConstant: 20).isActive = true 

或者您可以使用不同的方式。谷歌爲Auto layout programmatically swift

使當用戶輸入少於6個字符

它只能顯示

How do I check when a UITextField changes?

這可能有助於你

編輯

將此添加到您的ViewController來隱藏狀態欄

override func viewDidAppear(_ animated: Bool) { 
    super.viewDidAppear(animated) 
    //Add below line..... 
    UIApplication.shared.isStatusBarHidden = true 
} 

override func viewWillDisappear(_ animated: Bool) { 
    super.viewWillDisappear(animated) 
    //It will show the status bar again after dismiss 
    UIApplication.shared.isStatusBarHidden = false 
} 

override var prefersStatusBarHidden: Bool { 
    return true 
}