问题描述
我想显示一个带有TextView的弹出窗口，在iPad上可以使用很长时间，但是在iPhone上，弹出窗口会显示“全屏”，这是我不需要也不需要的。 我如何告诉iPhone（如iPad）只能有300 x 300的面积？ 我发现了几个可以在iPad上正常运行的示例，但是它们都无济于事。 我究竟做错了什么？ （在实际设备上：iPhoneX，iPad2）
NewPopupVCTextView类：UIViewController， UITextFieldDelegate {
@IBOutlet weak var infoTextTextView: UITextView!
override var preferredContentSize: CGSize {
get {
if infoTextTextView != nil,let presentingVC = presentingViewController {
setTextViewContent()
return infoTextTextView.contentSize
}
return super.preferredContentSize
}
set { super.preferredContentSize = newValue }
}
func setTextViewContent() {
infoTextTextView.text = sourceText
}
}
解决方法
在您的源ViewController中
//
// ViewController.swift
// popOver
//
// Created by Lieng Hongky on 8/26/20.
// Copyright © 2020 Hongky. All rights reserved.
//
import UIKit
class ViewController: UIViewController,UIPopoverPresentationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
@IBAction func openPopover(_ sender: Any) {
//MARK:====> instantiate the ViewController you want to be pop up
let popVC = UIStoryboard(name: "Main",bundle: .main).instantiateViewController(identifier: "popVC")
popVC.modalPresentationStyle = .popover
//MARK:====> set the source view for the pop up VC
popVC.popoverPresentationController?.sourceView = self.view
popVC.popoverPresentationController?.sourceRect = CGRect(origin: self.view.center,size: CGSize.zero)
//MARK:====>if you want to omit the arrow add this line of code
popVC.popoverPresentationController?.permittedArrowDirections = .init(rawValue: 0)
popVC.popoverPresentationController?.delegate = self
self.present(popVC,animated: true) {
}
}
func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentationStyle {
return .none
}
}