在 UIAlertView 中调整 UIPickerView 的大小 [英] Sizing a UIPickerView inside a UIAlertView
本文介绍了在 UIAlertView 中调整 UIPickerView 的大小的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试将 UIPickerView
放在 UIAlertView
中,但是我似乎无法正确调整它的大小.这是我得到的:
I'm trying to put a UIPickerView
in a UIAlertView
however I can't seem to size it correctly. Here's what I'm getting:
这是我的代码:
let alertView = UIAlertController(title: "Select item from list", message: "", preferredStyle: UIAlertControllerStyle.alert)
let pickerView = UIPickerView(frame: CGRect(x: 0, y: 0, width: 250, height: 60))
pickerView.dataSource = self
pickerView.delegate = self
alertView.view.addSubview(pickerView)
let action = UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler: nil)
alertView.addAction(action)
parent.present(alertView, animated: true, completion: nil)
推荐答案
诀窍是:
- 使用多行消息为您的新视图留出空间
在显示警报视图时调整新视图的大小
- use multiple lines for message to give space for your new view
adjust the size of the new view when the alert view is presented
let alertView = UIAlertController(
title: "Select item from list",
message: "\n\n\n\n\n\n\n\n\n",
preferredStyle: .alert)
let pickerView = UIPickerView(frame:
CGRect(x: 0, y: 50, width: 260, height: 162))
pickerView.dataSource = self
pickerView.delegate = self
// comment this line to use white color
pickerView.backgroundColor = UIColor.lightGray.withAlphaComponent(0.2)
alertView.view.addSubview(pickerView)
let action = UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler: nil)
alertView.addAction(action)
present(alertView, animated: true, completion: { _ in
pickerView.frame.size.width = alertView.view.frame.size.width
})
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