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我最近跟着一個git hub項目收集視圖搜索欄。在那裏有一個搜索欄，收藏視圖單元格。在potrait模式下一切正常。當我使用橫向模式查看時，單獨顯示半寬尺寸的屏幕搜索欄。這裏是搜索欄代碼。我使用編程方式添加搜索欄。搜索欄不能以橫向全寬顯示以上ios 7
注意：我使用的部署目標7.0應該運行在所有版本的ios 7,8,9設備上。
如何使我的搜索欄的寬度相同&橫向模式下的全寬度。
我的代碼：
#import "CollectionViewController.h"
#import "CollectionViewCell.h"
@interface CollectionViewController()<UISearchBarDelegate>
@property (nonatomic,strong) NSArray *dataSource;
@property (nonatomic,strong) NSArray *dataSourceForSearchResult;
@property (nonatomic) BOOL searchBarActive;
@property (nonatomic) float searchBarBoundsY;
@property (nonatomic,strong) UISearchBar *searchBar;
@property (nonatomic,strong) UIRefreshControl *refreshControl;
@end
@implementation CollectionViewController
static NSString * const reuseIdentifier = @"Cell";
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
// datasource used when user search in collectionView
self.dataSourceForSearchResult = [NSArray new];
// normal datasource
self.dataSource [email protected][@"Modesto",@"Rebecka",@"Andria",@"Sergio"];
}
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
[self prepareUI];
}
-(void)dealloc{
// remove Our KVO observer
[self removeObservers];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - actions
-(void)refreashControlAction{
[self cancelSearching];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
// stop refreshing after 2 seconds
[self.collectionView reloadData];
[self.refreshControl endRefreshing];
});
}
#pragma mark - <UICollectionViewDataSource>
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
return 1;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
if (self.searchBarActive) {
return self.dataSourceForSearchResult.count;
}
return self.dataSource.count;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
CollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath];
// Configure the cell
if (self.searchBarActive) {
cell.laName.text = self.dataSourceForSearchResult[indexPath.row];
}else{
cell.laName.text = self.dataSource[indexPath.row];
}
return cell;
}
#pragma mark - <UICollectionViewDelegateFlowLayout>
- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView
layout:(UICollectionViewLayout*)collectionViewLayout
insetForSectionAtIndex:(NSInteger)section{
return UIEdgeInsetsMake(self.searchBar.frame.size.height, 0, 0, 0);
}
- (CGSize)collectionView:(UICollectionView *)collectionView
layout:(UICollectionViewLayout*)collectionViewLayout
sizeForItemAtIndexPath:(NSIndexPath *)indexPath{
CGFloat cellLeg = (self.collectionView.frame.size.width/2) - 5;
return CGSizeMake(cellLeg,cellLeg);;
}
#pragma mark - search
- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope{
NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"self contains[c] %@", searchText];
self.dataSourceForSearchResult = [self.dataSource filteredArrayUsingPredicate:resultPredicate];
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{
// user did type something, check our datasource for text that looks the same
if (searchText.length>0) {
// search and reload data source
self.searchBarActive = YES;
[self filterContentForSearchText:searchText
scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
objectAtIndex:[self.searchDisplayController.searchBar
selectedScopeButtonIndex]]];
[self.collectionView reloadData];
}else{
// if text lenght == 0
// we will consider the searchbar is not active
self.searchBarActive = NO;
}
}
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar{
[self cancelSearching];
[self.collectionView reloadData];
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar{
self.searchBarActive = YES;
[self.view endEditing:YES];
}
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar{
// we used here to set self.searchBarActive = YES
// but we'll not do that any more... it made problems
// it's better to set self.searchBarActive = YES when user typed something
[self.searchBar setShowsCancelButton:YES animated:YES];
}
- (void)searchBarTextDidEndEditing:(UISearchBar *)searchBar{
// this method is being called when search btn in the keyboard tapped
// we set searchBarActive = NO
// but no need to reloadCollectionView
self.searchBarActive = NO;
[self.searchBar setShowsCancelButton:NO animated:YES];
}
-(void)cancelSearching{
self.searchBarActive = NO;
[self.searchBar resignFirstResponder];
self.searchBar.text = @"";
}
#pragma mark - prepareVC
-(void)prepareUI{
[self addSearchBar];
[self addRefreshControl];
}
-(void)addSearchBar{
if (!self.searchBar) {
self.searchBarBoundsY = self.navigationController.navigationBar.frame.size.height + [UIApplication sharedApplication].statusBarFrame.size.height;
self.searchBar = [[UISearchBar alloc]initWithFrame:CGRectMake(0,self.searchBarBoundsY, [UIScreen mainScreen].bounds.size.width, 44)];
self.searchBar.searchBarStyle = UISearchBarStyleMinimal;
self.searchBar.tintColor = [UIColor whiteColor];
self.searchBar.barTintColor = [UIColor whiteColor];
self.searchBar.delegate = self;
self.searchBar.placeholder = @"search here";
[[UITextField appearanceWhenContainedIn:[UISearchBar class], nil] setTextColor:[UIColor whiteColor]];
// add KVO observer.. so we will be informed when user scroll colllectionView
[self addObservers];
}
if (![self.searchBar isDescendantOfView:self.view]) {
[self.view addSubview:self.searchBar];
}
}
-(void)addRefreshControl{
if (!self.refreshControl) {
self.refreshControl = [UIRefreshControl new];
self.refreshControl.tintColor = [UIColor whiteColor];
[self.refreshControl addTarget:self
action:@selector(refreashControlAction)
forControlEvents:UIControlEventValueChanged];
}
if (![self.refreshControl isDescendantOfView:self.collectionView]) {
[self.collectionView addSubview:self.refreshControl];
}
}
-(void)startRefreshControl{
if (!self.refreshControl.refreshing) {
[self.refreshControl beginRefreshing];
}
}
#pragma mark - observer
- (void)addObservers{
[self.collectionView addObserver:self forKeyPath:@"contentOffset" options:NSKeyValueObservingOptionNew | NSKeyValueObservingOptionOld context:nil];
}
- (void)removeObservers{
[self.collectionView removeObserver:self forKeyPath:@"contentOffset" context:Nil];
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(UICollectionView *)object change:(NSDictionary *)change context:(void *)context{
if ([keyPath isEqualToString:@"contentOffset"] && object == self.collectionView) {
self.searchBar.frame = CGRectMake(self.searchBar.frame.origin.x,
self.searchBarBoundsY + ((-1* object.contentOffset.y)-self.searchBarBoundsY),
self.searchBar.frame.size.width,
self.searchBar.frame.size.height);
}
}
還可以獲得完整的項目在這裏Git-hub
這裏肖像模式圖像：
，當我在景觀上運行同樣的搜索欄我海
rch酒吧是這樣一半：
我需要添加什麼代碼來設置我的搜索欄全景視圖橫向mode.Thnaks！
您如何看待使用約束？這將解決它而無需使用大小類編寫任何代碼。 – gikygik
s bro.But但我不知道爲搜索欄添加編程方式的限制..現在多數民衆贊成在一個問題。我試圖添加，但它會拋出錯誤 – user5513630