Question

我在包含项目列表的视图控制器中放置了一个表格视图。

[我在第一张图片中显示的导航栏中放了一个搜索图标。当我点击该图标时，会打开一个搜索栏并显示一个取消按钮。取消按钮正在运行。][1]

现在我想在搜索框中搜索。请任何人都可以帮助我获取代码。

在viewDidLoad中：

UIBarButtonItem *searchButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSearch target:self action:@selector(toggleSearch:)];
self.navigationController.navigationBar.topItem.rightBarButtonItem = searchButton;

toggleSearch：

- (IBAction)toggleSearch:(id)sender
{

    _searchBar = [[UISearchBar alloc] initWithFrame:CGRectZero];

    _searchBar.delegate=self;
    [_searchBar sizeToFit];

    searchController= [[UISearchController alloc]initWithSearchResultsController:self];
    searchController.searchResultsUpdater = self;
    searchController.searchResultsUpdater = self;
    searchController.delegate = self;

    self.navigationItem.titleView = searchController.searchBar;

  searchController.hidesNavigationBarDuringPresentation = NO;

}

Answer 1

您需要实现搜索栏委托方法。

首先，您可以将主阵列分配给临时阵列，之后可以添加此代码。

- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar{
[_searchBar setShowsCancelButton:YES animated:YES];
return YES;
}

- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
NSPredicate *result=[NSPredicate predicateWithFormat:@"SELF CONTAINS[cd] %@",searchText];
NSArray * array = [arrTemp filteredArrayUsingPredicate:result];
arrMain=[array mutableCopy];
[tblview reloadData];
}

-(void)searchBarCancelButtonClicked:(UISearchBar *)searchBar
{
[_searchBar setShowsCancelButton:NO animated:YES];
}

-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
NSPredicate *result=[NSPredicate predicateWithFormat:@"SELF CONTAINS[cd] %@",searchBar.text];
NSArray * array = [arrTemp filteredArrayUsingPredicate:result];
arrMain=[array mutableCopy];
[tblview reloadData];
[searchBar resignFirstResponder];
[_searchBar setShowsCancelButton:NO animated:YES];
}

单击图标时，在导航栏中搜索栏

1 个答案: