问题描述
给出3个控制器:A,B,CA具有隐藏的导航栏.通过StoryboardReference调用控制器B.控制器B在viewDidLoad上显示导航栏.它具有一个搜索栏和一个collectionView.请参阅我的情节提要的屏幕快照A.如果单击一个单元格,则调用控制器C.
Given 3 Controllers: A,B,CA has a hidden navigationbar. Calls Controller B via a StoryboardReference.Controller B shows Navigationbar on viewDidLoad. It has a searchbar and a collectionView. See screenshot A of my storyboard. Calls controller C if a cell is clicked.
问题:如果A呼叫B,则搜索栏位于导航栏的后面(屏幕快照B).从C到B的过渡出现了(屏幕截图C).
Problem:If A calls B the searchbar is behind the navigationbar (Screenshot B). It appears with the transition from C to B (Screenshot C).
导航栏已经是半透明的.有什么想法吗?
Navigationbar is already translucent. Any ideas?
编辑
我意识到动画过渡导致了我的问题.
I realized that my animated transitioning is causing my problem.
也许您可以发现错误?
class ZoomInCircleViewTransition: NSObject, UIViewControllerAnimatedTransitioning, UIViewControllerTransitioningDelegate {
var transitionContext: UIViewControllerContextTransitioning?
func transitionDuration(transitionContext: UIViewControllerContextTransitioning?) -> NSTimeInterval {
return 0.6
}
func animateTransition(transitionContext: UIViewControllerContextTransitioning) {
self.transitionContext = transitionContext
guard let toViewController: UIViewController = transitionContext.viewControllerForKey(UITransitionContextToViewControllerKey) else {
return
}
guard let fromViewController = transitionContext.viewControllerForKey(UITransitionContextFromViewControllerKey) else { return
}
guard let fromViewTransitionFromView = fromViewController as? TransitionFromViewProtocol else {
return
}
let imageViewSnapshot = fromViewTransitionFromView.getViewForTransition()
let endFrame = CGRectMake(-CGRectGetWidth(toViewController.view.frame)/2, -CGRectGetHeight(toViewController.view.frame)/2, CGRectGetWidth(toViewController.view.frame)*2, CGRectGetHeight(toViewController.view.frame)*2)
if let containerView = transitionContext.containerView(){
containerView.addSubview(fromViewController.view)
containerView.addSubview(toViewController.view)
containerView.addSubview(imageViewSnapshot)
}
let maskPath = UIBezierPath(ovalInRect: imageViewSnapshot.frame)
let maskLayer = CAShapeLayer()
maskLayer.frame = toViewController.view.frame
maskLayer.path = maskPath.CGPath
toViewController.view.layer.mask = maskLayer
let quadraticEndFrame = CGRect(x: endFrame.origin.x - (endFrame.height - endFrame.width)/2, y: endFrame.origin.y, width: endFrame.height, height: endFrame.height)
let bigCirclePath = UIBezierPath(ovalInRect: quadraticEndFrame)
let pathAnimation = CABasicAnimation(keyPath: "path")
pathAnimation.delegate = self
pathAnimation.fromValue = maskPath.CGPath
pathAnimation.toValue = bigCirclePath
pathAnimation.duration = transitionDuration(transitionContext)
maskLayer.path = bigCirclePath.CGPath
maskLayer.addAnimation(pathAnimation, forKey: "pathAnimation")
let hideImageViewAnimation = {
imageViewSnapshot.alpha = 0.0
}
UIView.animateWithDuration(0.2, delay: 0.0, options: UIViewAnimationOptions.CurveLinear, animations: hideImageViewAnimation) { (completed) -> Void in
}
let scaleImageViewAnimation = {
imageViewSnapshot.frame = quadraticEndFrame
}
UIView.animateWithDuration(transitionDuration(transitionContext), delay: 0.0, options: UIViewAnimationOptions.CurveLinear, animations: scaleImageViewAnimation) { (completed) -> Void in
// After the complete animations have endet
imageViewSnapshot.removeFromSuperview()
toViewController.view.layer.mask = nil
}
}
override func animationDidStop(anim: CAAnimation, finished flag: Bool) {
if let transitionContext = self.transitionContext {
transitionContext.completeTransition(!transitionContext.transitionWasCancelled())
}
}
// MARK: UIViewControllerTransitioningDelegate protocol methods
// return the animataor when presenting a viewcontroller
func animationControllerForPresentedController(presented: UIViewController, presentingController presenting: UIViewController, sourceController source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return self
}
// return the animator used when dismissing from a viewcontroller
func animationControllerForDismissedController(dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return self
}
}
推荐答案
我认为我的应用程序遇到了一些类似的问题,但是由于您无法控制的所有事情而遇到了困难.我的解决方案是在导航栏中放置一个搜索图标,然后使搜索控制器在导航栏上向下滑动,以使其保持在表格/滚动视图之外.这是我的实现(应该完整)
I believe I was running in to some similar problems in my app, but running in to difficulties because of all the things you don't have control over. My solution was to put a search icon in the navigationbar, then have the search controller slide down over the navigationbar, keeping it out of the table/scroll view. Here is my implementation (should be complete)
import UIKit
class tvc: UITableViewController, UISearchBarDelegate, UISearchControllerDelegate {
var searchController:UISearchController!
@IBAction func startSearch() {
self.navigationController?.presentViewController(self.searchController, animated: true, completion: {})
}
override func viewDidDisappear(animated: Bool) {
cancelSearch(self)
}
override func viewDidLoad() {
super.viewDidLoad()
searchController = UISearchController(searchResultsController: nil)
searchController.searchResultsUpdater = self
searchController.dimsBackgroundDuringPresentation = false
searchController.delegate = self
searchController.hidesNavigationBarDuringPresentation = false
searchController.loadViewIfNeeded() /* Fixes bug in iOS http://stackoverflow.com/questions/32675001/uisearchcontroller-warning-attempting-to-load-the-view-of-a-view-controller */
definesPresentationContext = true
tableView.sectionIndexBackgroundColor = UIColor.clearColor()
tableView.sectionIndexTrackingBackgroundColor = UIColor.clearColor()
}
extension tvc: UISearchResultsUpdating {
// MARK: - UISearchResultsUpdating Delegate
func updateSearchResultsForSearchController(searchController: UISearchController) {
filterContentForSearchText(searchController.searchBar.text!)
}
}
func cancelSearch(sender: AnyObject?) {
if sender!.searchController.active == true {
sender?.searchController.resignFirstResponder()
sender!.navigationController!!.dismissViewControllerAnimated(false, completion: {})
sender!.searchController.searchBar.text = ""
sender!.searchController.active = false
}
}
这篇关于导航栏后面的搜索栏的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!