ios – UICollectionView中的UISearchBar在使用UISearchDisplayController时消失

概述我有一个UISearchBar作为子视图添加到UICollectionView,并附加到UISearchDisplayController. 我在viewDidLoad中设置它： self.searchController = [[UISearchDisplayController alloc] initWithSearchBar:self.searchBar 我有一个UISearchbar作为子视图添加到UICollectionVIEw,并附加到UISearchdisplayController.

我在vIEwDIDLoad中设置它：

self.searchController = [[UISearchdisplayController alloc] initWithSearchbar:self.searchbar                                                          contentsController:self];self.searchController.delegate = self;self.searchController.searchResultsDataSource = self;self.searchController.searchResultsDelegate = self;[self.collectionVIEw addSubvIEw:self.searchbar];

当我将另一个视图控制器推送到导航控制器然后d出它时,搜索栏消失.仅当集合视图向下滚动到足以隐藏搜索栏时才会发生这种情况.此外,即使搜索栏消失,点击它应该激活的白色空间也会激活附加到它的搜索显示控制器.

这仅在iOS 7上发生,如果我删除搜索显示控制器,搜索栏将不会消失.

还有一件事值得一提.当搜索栏消失时,如果我按下另一个视图控制器然后d出它,则该栏将再次可见.

显然这是iOS 7上UISearchdisplayController的一个BUG,所以关于如何解决它的任何想法？

解决方法 我最终自己实现了UISearchdisplayController.这是我的代码.

ZBNSearchdisplayController.h

@protocol ZBNSearchdisplayDelegate;@interface ZBNSearchdisplayController : NSObject<UISearchbarDelegate>- (ID)initWithSearchbar:(UISearchbar *)searchbar contentsController:(UIVIEwController *)vIEwController;- (voID)setActive:(BOol)visible animated:(BOol)animated;@property(nonatomic,assign) ID<ZBNSearchdisplayDelegate> delegate;@property(nonatomic,getter = isActive) BOol active;@property(nonatomic,Readonly) UISearchbar *searchbar;@property(nonatomic,Readonly) UIVIEwController *searchContentsController;@property(nonatomic,Readonly) UItableVIEw *searchResultstableVIEw;@property(nonatomic,assign) ID<UItableVIEwDataSource> searchResultsDataSource;@property(nonatomic,assign) ID<UItableVIEwDelegate> searchResultsDelegate;@end@protocol ZBNSearchdisplayDelegate <NSObject>@optional- (voID)searchdisplayControllerWillBeginSearch:(ZBNSearchdisplayController *)controller;- (voID)searchdisplayControllerDIDBeginSearch:(ZBNSearchdisplayController *)controller;- (voID)searchdisplayControllerWillEndSearch:(ZBNSearchdisplayController *)controller;- (voID)searchdisplayControllerDIDEndSearch:(ZBNSearchdisplayController *)controller;- (voID)textDIDChange:(Nsstring *)searchText;- (voID)searchbar:(UISearchbar *)searchbar selectedScopebuttonIndexDIDChange:(NSInteger)selectedScope;@end

ZBNSearchdisplayController.m

#import "ZBNSearchdisplayController.h"@implementation ZBNSearchdisplayController- (ID)initWithSearchbar:(UISearchbar *)searchbar contentsController:(UIVIEwController *)vIEwController {    self = [super init];    if (self) {        _searchbar = searchbar;        _searchbar.delegate = self;        _searchContentsController = vIEwController;        CGfloat y = 64.0f;        CGfloat height = _searchContentsController.vIEw.frame.size.height - y;        _searchResultstableVIEw = [[UItableVIEw alloc] initWithFrame:CGRectMake(0.0f,y,_searchContentsController.vIEw.frame.size.wIDth,height)];        _searchResultstableVIEw.scrollsTotop = NO;    }    return self;}- (voID)setSearchResultsDataSource:(ID<UItableVIEwDataSource>)searchResultsDataSource {    _searchResultstableVIEw.dataSource = searchResultsDataSource;}- (voID)setSearchResultsDelegate:(ID<UItableVIEwDelegate>)searchResultsDelegate {    _searchResultstableVIEw.delegate = searchResultsDelegate;}- (voID)setActive:(BOol)visible animated:(BOol)animated {    if (!visible) {        [_searchbar resignFirstResponder];        _searchbar.text = nil;        _searchbar.showsCancelbutton = NO;    }    if (visible && [self.delegate respondsToSelector:@selector(searchdisplayControllerWillBeginSearch:)]) {        [self.delegate searchdisplayControllerWillBeginSearch:self];    } else if (!visible && [self.delegate respondsToSelector:@selector(searchdisplayControllerWillEndSearch:)]) {        [self.delegate searchdisplayControllerWillEndSearch:self];    }    [_searchContentsController.navigationController setNavigationbarHIDden:visible animated:YES];    float Alpha = 0;    if (visible) {        [_searchContentsController.vIEw addSubvIEw:_searchResultstableVIEw];        Alpha = 1.0;    }    if ([_searchContentsController.vIEw respondsToSelector:@selector(scrollEnabled)]) {        ((UIScrollVIEw *)_searchContentsController.vIEw).scrollEnabled = !visible;    }    if (animated) {        [UIVIEw animateWithDuration:0.2 animations:^{            _searchResultstableVIEw.Alpha = Alpha;        } completion:^(BOol finished) {            self.active = visible;        }];    } else {        _searchResultstableVIEw.Alpha = Alpha;    }}#pragma mark - UISearchbarDelegate- (voID)searchbar:(UISearchbar *)searchbar selectedScopebuttonIndexDIDChange:(NSInteger)selectedScope {    if ([self.delegate respondsToSelector:@selector(searchbar:selectedScopebuttonIndexDIDChange:)]) {        [self.delegate searchbar:searchbar selectedScopebuttonIndexDIDChange:selectedScope];    }}- (voID)searchbar:(UISearchbar *)searchbar textDIDChange:(Nsstring *)searchText {    if ([self.delegate respondsToSelector:@selector(textDIDChange:)]) {        [self.delegate textDIDChange:searchText];    }}- (voID)searchbarTextDIDBeginEditing:(UISearchbar *)searchbar {    [searchbar setShowsCancelbutton:YES animated:YES];    [self setActive:YES animated:YES];    [_searchResultstableVIEw reloadData];}- (voID)searchbarSearchbuttonClicked:(UISearchbar *)searchbar {    [_searchResultstableVIEw reloadData];}- (voID)searchbarCancelbuttonClicked:(UISearchbar *)searchbar {    [self setActive:NO animated:YES];    [self.searchResultstableVIEw scrollRectToVisible:CGRectMake(0,1,1) animated:NO];}@end

总结

以上是内存溢出为你收集整理的ios – UICollectionView中的UISearchBar在使用UISearchDisplayController时消失全部内容，希望文章能够帮你解决ios – UICollectionView中的UISearchBar在使用UISearchDisplayController时消失所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。