是的，我已经从其他类似的问题中尝试过这些方法，但是它们没有用：
var frame = CGRect.zero
frame.size.height = .leastNormalMagnitude
tableView.tableHeaderView = UIView(frame: frame)
和
self.automaticallyAdjustsScrollViewInsets = false;
definesPresentationContext = true
看看我要在搜索栏下方删除的多余空间：
也许您可以指出我的代码在此方面有所改进：
import UIKit
class SelectCountryViewController: UITableViewController, UISearchBarDelegate, UISearchResultsUpdating {
struct CellStruct
{
var countryName : String
var countryFlag : String
var countryDialCode : String
}
var cellDatas = [CellStruct]()
var filteredCellDatas = [CellStruct]()
var searchController : UISearchController!
var resultsController = UITableViewController()
var refreshController = UIRefreshControl()
var searchTextField : UITextField!
var searchLoaded = false
var isSearching = false
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.delegate = self;
var frame = CGRect.zero
frame.size.height = .leastNormalMagnitude
tableView.tableHeaderView = UIView(frame: frame)
self.automaticallyAdjustsScrollViewInsets = false;
//tableView.separatorStyle = UITableViewCellSeparatorStyle.singleLine
definesPresentationContext = true
configureSearchController()
let cancelButton = UIBarButtonItem(title: "Cancel", style: .plain, target: self, action: #selector(cancel))
navigationItem.leftBarButtonItem = cancelButton
//self.navigationItem.title = "Select Country"
let searchButton: UIBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: self, action: #selector(searchButtonAction))
searchButton.image = UIImage(named: "search")
self.navigationItem.rightBarButtonItem = searchButton
refreshController.attributedTitle = NSAttributedString(string: "")
refreshController.addTarget(self, action: #selector(refreshSelector), for: .valueChanged)
tableView.addSubview(refreshController)
guard let path = Bundle.main.path(forResource: "countries", ofType: "json")
else
{
return
}
let url = URL(fileURLWithPath: path)
do
{
let data = try Data (contentsOf: url)
let json = try JSONSerialization.jsonObject(with: data, options: .mutableContainers)
print(json)
guard let array = json as? [Any] else { return}
for info in array {
guard let userDict = info as? [String: Any] else { return}
guard let code = userDict["code"] as? String else { print("No code found"); return}
guard let dialCode = userDict["dial_code"] as? String else { print("No dial code found"); return}
guard let name = userDict["name"] as? String else { print("No name found"); return}
print("We have: ", code, dialCode, name)
cellDatas.append(CellStruct(countryName: name, countryFlag: code, countryDialCode: dialCode))
}
}
catch
{
print(error)
}
}
func configureSearchController()
{
resultsController.tableView.delegate = self
resultsController.tableView.dataSource = self
self.searchController = UISearchController(searchResultsController: self.resultsController)
//self.tableView.tableHeaderView = self.searchController.searchBar
self.searchController.searchResultsUpdater = self
self.searchController.dimsBackgroundDuringPresentation = false
searchController.searchBar.delegate = self
self.searchController.searchBar.scopeButtonTitles = []
for subView in searchController.searchBar.subviews {
for subViewOne in subView.subviews {
if subViewOne is UITextField {
searchTextField = subViewOne as! UITextField
subViewOne.backgroundColor = UIColor.white
break
}
}
}
self.automaticallyAdjustsScrollViewInsets = false;
extendedLayoutIncludesOpaqueBars = true
definesPresentationContext = true
}
func searchBarShouldBeginEditing(_ searchBar: UISearchBar) -> Bool {
// tableView.setContentOffset(self.navigationItem, animated: true)
searchController.searchBar.barTintColor = UIColor.white
//searchController.searchBar.layer.borderColor = UIColor.white.cgColor
searchTextField.backgroundColor = UIColor.searchBarTextFieldGrey()
return true
}
func searchBarTextDidEndEditing(_ searchBar: UISearchBar) {
self.searchController.searchBar.showsCancelButton = false
// searchController.searchBar.barTintColor = nil
searchTextField.backgroundColor = UIColor.white
searchController.searchBar.barTintColor = nil
}
override func viewWillDisappear(_ animated: Bool) {
self.navigationController?.navigationBar.shadowImage = nil
self.navigationController?.navigationBar.backIndicatorImage = nil
}
func updateSearchResults(for searchController: UISearchController) {
//tableView.separatorStyle = UITableViewCellSeparatorStyle.none
if searchController.searchBar.text! == "" {
filteredCellDatas = cellDatas
} else {
// Filter the results
filteredCellDatas = cellDatas.filter { $0.countryName.lowercased().contains(searchController.searchBar.text!.lowercased()) }
}
resultsController.tableView.reloadData()
// tableView.separatorStyle = .none
// tableView.separatorStyle = UITableViewCellSeparatorStyle.singleLine
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if tableView == resultsController.tableView
{
isSearching = true
return filteredCellDatas.count
}
else
{
isSearching = false
return cellDatas.count
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
var cell = tableView.dequeueReusableCell(withIdentifier: "Cell")
cell?.separatorInset.left = 15
if cell == nil {
cell = UITableViewCell(style: .value1, reuseIdentifier: "Cell")
cell?.separatorInset.left = 0
}
if tableView == resultsController.tableView
{
cell?.textLabel?.text = filteredCellDatas[indexPath.row].countryName
cell?.detailTextLabel?.text = filteredCellDatas[indexPath.row].countryDialCode
cell?.imageView?.image = UIImage (named: filteredCellDatas[indexPath.row].countryFlag)
}
else
{
cell?.textLabel?.text = cellDatas[indexPath.row].countryName
cell?.detailTextLabel?.text = cellDatas[indexPath.row].countryDialCode
cell?.imageView?.image = UIImage (named: cellDatas[indexPath.row].countryFlag)
}
cell?.textLabel?.textColor = UIColor.labelGray2()
cell?.detailTextLabel?.textColor = UIColor.labelGray2()
cell?.textLabel?.font = UIFont(name:"SF Pro Text", size:15)
cell?.detailTextLabel?.font = UIFont(name:"SF Pro Text", size:15)
return cell!
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print(indexPath.row, indexPath.section)
// let currentCell = tableView.cellForRow(at: indexPath)
if(isSearching)
{
print(filteredCellDatas[indexPath.row].countryFlag)
UserDefaults.standard.set(filteredCellDatas[indexPath.row].countryFlag, forKey: "preferredCountry")
if searchController.isActive {
DispatchQueue.main.async {
self.searchController.dismiss(animated: true, completion: {
self.performSegue(withIdentifier: "unWindFromSelectCountry", sender: nil)
})
}
} else {
// Play segue, dismiss or pop ...
self.performSegue(withIdentifier: "unWindFromSelectCountry", sender: nil)
}
}
else
{
print(cellDatas[indexPath.row].countryFlag)
UserDefaults.standard.set(cellDatas[indexPath.row].countryFlag, forKey: "preferredCountry")
self.performSegue(withIdentifier: "unWindFromSelectCountry", sender: nil)
}
}
override func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
if section == 0 {
return CGFloat.leastNormalMagnitude
}
return tableView.sectionHeaderHeight
}
@objc func cancel(){
navigationController?.popViewController(animated: true)
}
@objc func refreshSelector()
{
if(!searchLoaded)
{
searchLoaded = true
self.tableView.tableHeaderView = searchController.searchBar
print( "Got ya")
}
refreshController.endRefreshing()
}
@objc func searchButtonAction() {
if(!searchLoaded)
{
searchLoaded = true
self.tableView.tableHeaderView = searchController.searchBar
// self.navigationItem.titleView = searchController.searchBar
}
self.searchController.searchBar.becomeFirstResponder()
self.searchController.searchBar.text = ""
// self.navigationItem.rightBarButtonItem = nil
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
如前所述，表格视图具有分组样式。我正在从代码配置搜索栏。因此，在同一表视图中使用代码来更新结果。 预先感谢
答案 0 :(得分：0)
也许不是tableHeaderView，我认为它可能是特定的HeaderView部分尝试的：
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
if section == 0 {
return CGFloat.leastNormalMagnitude
}
return tableView.sectionHeaderHeight
}
代码隐藏了表格第一部分的标题