我正在使用 UItableView 控制器,我无法将搜索栏添加到导航栏。当单击导航栏上的搜索按钮时,我希望搜索栏出现。如何在导航栏上添加搜索按钮和搜索栏。
想要在导航栏上单击搜索按钮时在导航栏上添加搜索栏
答案:
对于搜索按钮,您可以根据需要使用 UIBarButtonSystemItemSearch。
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemSearch
target:self
action:@selector(actionSearch:)];
您可以将搜索栏设置为导航栏的标题视图
self.navigationItem.titleView = mySearchBar;
要制作这样的搜索栏,您需要在导航栏控制器中插入 Button 并将背景图像设置为 search.png
(您的图像)。因此,当用户单击此按钮时,将目标设置为 searchbar
将打开。请检查以下代码以供参考。
首先在 .h
文件中设置委托方法。
@interface FriendsViewController : UIViewController <UISearchDisplayDelegate,UISearchBarDelegate,UIAlertViewDelegate>
@property (nonatomic, strong) UIButton *searchButton;
@property (nonatomic, strong) UIBarButtonItem *searchItem;
@property (nonatomic, strong) UISearchBar *searchBar;
@property (strong, nonatomic) UISearchController *searchController;
@property (strong, nonatomic) UISearchDisplayController *d1;
然后在您的导航栏中插入按钮。
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
UIButton *btn=[[UIButton alloc]initWithFrame:CGRectMake(279,9,25, 25)];
[btn setImage:[UIImage imageNamed:@"search"] //put here your searchimage
forState:UIControlStateNormal];
[btn setTitle:@"" forState:UIControlStateNormal];
[btn addTarget:self action:@selector(clickme:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *barbtn=[[UIBarButtonItem alloc]initWithCustomView:btn];
self.tabBarController.navigationItem.rightBarButtonItem=barbtn;
[self.tabBarController.navigationController.navigationBar setHidden:NO];
现在您必须在 clickme
您的按钮方法上设置 searchcontroller。
- (IBAction)clickme:(id)sender{
UISearchBar *searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, 300, 44.0)];
searchBar.autoresizingMask =0;
searchBar.delegate = self;
searchBar.placeholder = @"Search for items...";
searchBar.showsScopeBar=YES;
UIView *searchBarWrapper = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 44)];
searchBarWrapper.autoresizingMask = 0;
[searchBarWrapper addSubview:searchBar];
self.searchItem = [[UIBarButtonItem alloc] initWithCustomView:searchBarWrapper];
self.tabBarController.navigationItem.leftBarButtonItem = self.searchItem;
self.navigationItem.rightBarButtonItem = nil;
self.navigationItem.titleView = nil;
////////////// ~ Search Display Controller as Object ~/////////////////////////////
self.d1 = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self];
self.d1.delegate = self;
self.d1.searchResultsDataSource = self;
self.d1.searchResultsDelegate = self;
self.d1.searchResultsTableView.rowHeight = 40;
self.d1.displaysSearchBarInNavigationBar = YES;
self.searchBar.translucent = NO;
self.searchBar.barTintColor = [UIColor grayColor];
self.d1.searchBar.tintColor = [UIColor blueColor];
[searchBar sizeToFit];
}
当您点击搜索图标时
在按钮单击 => .m 文件处添加此内容:
并添加这个 => .h 文件