Question

UISearchController我遇到两个问题。我将此设置用于UISearchController：

var resultSearchController = UISearchController(searchResultsController: nil)

override func viewDidLoad() {
    super.viewDidLoad()

    resultSearchController = UISearchController(searchResultsController: nil)
    resultSearchController.searchResultsUpdater = self
    resultSearchController.dimsBackgroundDuringPresentation = false
    resultSearchController.hidesNavigationBarDuringPresentation = false
    resultSearchController.searchBar.placeholder = "Traži.."
    resultSearchController.searchBar.sizeToFit()
    tableView.tableHeaderView = resultSearchController.searchBar

    refreshControl = UIRefreshControl()
    refreshControl!.attributedTitle = NSAttributedString(string: "Učitaj podatke..")
    refreshControl!.backgroundColor = UIColor(red:1, green:0.48, blue:0, alpha:0.3)
    refreshControl!.tintColor = UIColor.whiteColor()
    refreshControl!.addTarget(self, action: #selector(ArticleTableViewController.getArticleData), forControlEvents: UIControlEvents.ValueChanged)
    tableView.addSubview(refreshControl!)
}

第一个问题

当我点击搜索栏文本字段时，UIRefreshControl显示但不应该：

第二个问题

当我搜索项目，然后点击它时，我使用Storyboard segue在新的viewcontroller中打开该项目，但问题是该新的VC上仍然存在搜索栏（第一张图片正在搜索，第二张图片显示新的VC打开）：

Answer 1

我找到了这个解决方案：

override func viewDidLoad() {
    super.viewDidLoad()

    resultSearchController = UISearchController(searchResultsController: nil)
    resultSearchController.searchResultsUpdater = self
    resultSearchController.dimsBackgroundDuringPresentation = false
    resultSearchController.hidesNavigationBarDuringPresentation = false
    resultSearchController.searchBar.placeholder = "Traži.."
    resultSearchController.searchBar.sizeToFit()
    tableView.tableHeaderView = resultSearchController.searchBar

    refreshControl = UIRefreshControl()
    refreshControl!.attributedTitle = NSAttributedString(string: "Učitaj podatke..")
    refreshControl!.backgroundColor = UIColor(red:1, green:0.48, blue:0, alpha:0.3)
    refreshControl!.tintColor = UIColor.whiteColor()
    refreshControl!.addTarget(self, action: #selector(ArticleTableViewController.getArticleData), forControlEvents: UIControlEvents.ValueChanged)
    tableView.addSubview(refreshControl!)


    // this hide search bar on next VC, first problem 
    self.definesPresentationContext = true
    // second problem
    tableView.contentOffset = CGPointMake(0, CGRectGetHeight(resultSearchController.searchBar.frame));

}

Answer 2

可能你应该使用UISearchBar而不是UISearchController？试试这段代码：

ViewController.swift

import UIKit

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UISearchBarDelegate {

@IBOutlet var searchBar: UISearchBar!
@IBOutlet var tableView: UITableView!


override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    tableView.dataSource = self
    tableView.delegate = self
    searchBar.delegate = self
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return 40
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("cell")
    cell?.textLabel?.text = "\(indexPath.row)"
    return cell!
}

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    let newViewController = UIViewController()
    newViewController.view.backgroundColor = UIColor.whiteColor()
    newViewController.title = "\(indexPath.row)"
    navigationController?.pushViewController(newViewController, animated: true)
}


func searchBar(searchBar: UISearchBar, textDidChange searchText: String) {
    NSLog(searchText)
}
}

Main.storyboard

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15G31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="u8Q-4a-0UD">
<dependencies>
    <deployment identifier="iOS"/>
    <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
</dependencies>
<scenes>
    <!--View Controller-->
    <scene sceneID="tne-QT-ifu">
        <objects>
            <viewController id="BYZ-38-t0r" customClass="ViewController" customModule="stackoverflow_38971807" customModuleProvider="target" sceneMemberID="viewController">
                <layoutGuides>
                    <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
                    <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
                </layoutGuides>
                <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
                    <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
                    <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                    <subviews>
                        <searchBar contentMode="redraw" translatesAutoresizingMaskIntoConstraints="NO" id="GdH-fg-5TJ">
                            <rect key="frame" x="0.0" y="64" width="600" height="44"/>
                            <textInputTraits key="textInputTraits"/>
                        </searchBar>
                        <tableView clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="44" sectionHeaderHeight="28" sectionFooterHeight="28" translatesAutoresizingMaskIntoConstraints="NO" id="tP2-Xq-aem">
                            <rect key="frame" x="0.0" y="108" width="600" height="492"/>
                            <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
                            <prototypes>
                                <tableViewCell clipsSubviews="YES" contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" reuseIdentifier="cell" textLabel="RcZ-LI-9Ir" style="IBUITableViewCellStyleDefault" id="13y-5Y-dcw">
                                    <rect key="frame" x="0.0" y="28" width="600" height="44"/>
                                    <autoresizingMask key="autoresizingMask"/>
                                    <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="13y-5Y-dcw" id="ldM-4e-kie">
                                        <rect key="frame" x="0.0" y="0.0" width="600" height="43"/>
                                        <autoresizingMask key="autoresizingMask"/>
                                        <subviews>
                                            <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" text="Title" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="RcZ-LI-9Ir">
                                                <rect key="frame" x="15" y="0.0" width="570" height="43"/>
                                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
                                                <fontDescription key="fontDescription" type="system" pointSize="16"/>
                                                <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
                                                <nil key="highlightedColor"/>
                                            </label>
                                        </subviews>
                                    </tableViewCellContentView>
                                </tableViewCell>
                            </prototypes>
                        </tableView>
                    </subviews>
                    <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
                    <constraints>
                        <constraint firstItem="GdH-fg-5TJ" firstAttribute="leading" secondItem="8bC-Xf-vdC" secondAttribute="leading" id="Fwk-Jx-EJc"/>
                        <constraint firstAttribute="trailing" secondItem="GdH-fg-5TJ" secondAttribute="trailing" id="Q3j-AV-Tnj"/>
                        <constraint firstItem="tP2-Xq-aem" firstAttribute="bottom" secondItem="wfy-db-euE" secondAttribute="top" id="T9u-C9-1HD"/>
                        <constraint firstItem="GdH-fg-5TJ" firstAttribute="top" secondItem="y3c-jy-aDJ" secondAttribute="bottom" id="Y9o-yO-w6R"/>
                        <constraint firstItem="GdH-fg-5TJ" firstAttribute="leading" secondItem="tP2-Xq-aem" secondAttribute="leading" id="l4X-RD-XEW"/>
                        <constraint firstItem="GdH-fg-5TJ" firstAttribute="trailing" secondItem="tP2-Xq-aem" secondAttribute="trailing" id="pcF-ST-Zkq"/>
                        <constraint firstItem="tP2-Xq-aem" firstAttribute="top" secondItem="GdH-fg-5TJ" secondAttribute="bottom" id="ze4-D7-NeF"/>
                    </constraints>
                </view>
                <navigationItem key="navigationItem" id="pJE-Q4-d47"/>
                <connections>
                    <outlet property="searchBar" destination="GdH-fg-5TJ" id="N81-72-8HH"/>
                    <outlet property="tableView" destination="tP2-Xq-aem" id="lYV-er-UNj"/>
                </connections>
            </viewController>
            <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
        </objects>
        <point key="canvasLocation" x="1075" y="-133"/>
    </scene>
    <!--Navigation Controller-->
    <scene sceneID="Q5J-kb-qjE">
        <objects>
            <navigationController automaticallyAdjustsScrollViewInsets="NO" id="u8Q-4a-0UD" sceneMemberID="viewController">
                <toolbarItems/>
                <navigationBar key="navigationBar" contentMode="scaleToFill" id="ey2-Nm-1yZ">
                    <rect key="frame" x="0.0" y="0.0" width="320" height="44"/>
                    <autoresizingMask key="autoresizingMask"/>
                </navigationBar>
                <nil name="viewControllers"/>
                <connections>
                    <segue destination="BYZ-38-t0r" kind="relationship" relationship="rootViewController" id="A3N-1a-Rlv"/>
                </connections>
            </navigationController>
            <placeholder placeholderIdentifier="IBFirstResponder" id="QFX-N3-4dT" userLabel="First Responder" sceneMemberID="firstResponder"/>
        </objects>
        <point key="canvasLocation" x="218" y="-133"/>
    </scene>
</scenes>
</document>

当选择项搜索栏仍然存在时，Swift UISearchController

2 个答案: