在 iOS 11 中限制 UISearchBar 的高度

Posted 2023-03-11

【中文标题】在 iOS 11 中限制 UISearchBar 的高度

【英文标题】：Limit the height of UISearchBar in iOS 11

【发布时间】：2017-10-23 12:02:15

【问题描述】：

在 ios 11 中 UISearch 栏的高度有所增加，但我想要与 iOS 10 中相同的高度。如何做到这一点？我正在使用下面的代码来创建 searchController。

    searchController = UIUtils.searchControllerInitialize(self)
    searchController.searchResultsUpdater = self
    searchController.delegate = self
    searchController.searchBar.delegate = self

    viewTemp = UIView(frame: CGRect(x: 0.0, y: 64.0,width: UIScreen.main.bounds.size.width , height: 44))
    viewTemp.addSubview(self.searchController.searchBar)
    self.view.addSubview(viewTemp);


    class func searchControllerInitialize(_ forViewController: UIViewController) -> UISearchController  
    let controller = UISearchController(searchResultsController: nil)
    controller.hidesNavigationBarDuringPresentation = true
    // This property dismiss the background the navigation bar
    controller.dimsBackgroundDuringPresentation = false
    controller.definesPresentationContext = true
    forViewController.definesPresentationContext = true
    controller.searchBar.sizeToFit()

    let topView: UIView = controller.searchBar.subviews[0] as UIView
    for subView in topView.subviews 
        if subView.isKind(of: NSClassFromString("UITextField")!) 
            (subView as! UITextField).returnKeyType = UIReturnKeyType.search
            (subView as! UITextField).enablesReturnKeyAutomatically = true
        
    

    let viewS = UIView(frame: CGRect(x: 0.0, y: 0.0,width: UIScreen.main.bounds.size.width , height: 64))
    viewS.backgroundColor = UIColor.DTColor()
    controller.view.addSubview(viewS)
    controller.hidesNavigationBarDuringPresentation = false

    if #available(iOS 11.0, *) 
        controller.searchBar.translatesAutoresizingMaskIntoConstraints = false
        controller.searchBar.heightAnchor.constraint(equalToConstant: 44).isActive = true
    

    return controller

【参考方案1】：

我的应用也遇到了同样的问题。它在 iOS 10 中完美运行。

但是，它会像这样在iOS11中跳出我的视野。

我也不想把我的搜索栏放到导航项中。

所以也许你可以考虑我的回答。就是这样。

在您的故事板中：

代码：

override func viewDidLoad() 

    super.viewDidLoad()

    self.setupSearchController()



func setupSearchController() 

    self.searchResultController = UISearchController(searchResultsController: nil)

    self.searchResultController.searchResultsUpdater = self

    self.searchResultController.delegate = self

    self.searchResultController.hidesNavigationBarDuringPresentation = false

    self.searchResultController.dimsBackgroundDuringPresentation = false

    self.searchResultController.searchBar.delegate = self

    self.searchResultController.searchBar.searchBarStyle = .minimal

    self.searchResultController.searchBar.tintColor = UIColor.white

    self.phoneSearchView.searchBarContainer.addSubview(self.searchResultController.searchBar)

    self.memberListTableView.tableHeaderView = self.phoneSearchView



override func viewWillLayoutSubviews() 

    super.viewWillLayoutSubviews()

    self.searchResultController.searchBar.sizeToFit()

    self.searchResultController.searchBar.frame.size.width = self.phoneSearchView.searchBarContainer.frame.size.width

    self.searchResultController.searchBar.frame.size.height = self.phoneSearchView.searchBarContainer.frame.size.height

现在它就像一个魅力。

【参考方案2】：

//
//  Created by Sang Nguyen on 10/23/17.
//  Copyright © 2017 Sang. All rights reserved.
//

import Foundation
import UIKit

class CustomSearchBarView: UISearchBar 
    final let SearchBarHeight: CGFloat = 44
    final let SearchBarPaddingTop: CGFloat = 8
    override open func awakeFromNib() 
        super.awakeFromNib()
        self.setupUI()
    

    override init(frame: CGRect) 
        super.init(frame: frame)
        self.setupUI()
    

    required init?(coder aDecoder: NSCoder) 
        super.init(coder: aDecoder)
       // fatalError("init(coder:) has not been implemented")
    
    func findTextfield()-> UITextField?
        for view in self.subviews 
            if view is UITextField 
                return view as? UITextField
             else 
                for textfield in view.subviews 
                    if textfield is UITextField 
                        return textfield as? UITextField
                    
                
            
        
        return nil;
    
    func setupUI()
        if #available(iOS 11.0, *) 
            self.translatesAutoresizingMaskIntoConstraints = false
            self.heightAnchor.constraint(equalToConstant: SearchBarHeight).isActive = true
        
    

    override func layoutSubviews() 
        super.layoutSubviews()
        if #available(iOS 11.0, *) 
            if let textfield = self.findTextfield() 
                textfield.frame = CGRect(x: textfield.frame.origin.x, y: SearchBarPaddingTop, width: textfield.frame.width, height: SearchBarHeight - SearchBarPaddingTop * 2)`enter code here`
                return