2

在我的 Xcode 项目中，我有一个带有元素的 TableView，我添加了一个带有 Apple '惊人的新' UISearchController 的搜索栏。它运行得很好，但现在 UISearchController 上没有调用“cellForRowAtIndexPath”。结果通过了，我对计数进行了 NSLogg 操作，但未配置单元格。任何想法为什么会发生这种情况？

表视图控制器.m：

    - (void)viewDidLoad {
    [super viewDidLoad];



    self.listTableView.tableFooterView = [[UIView alloc] init];
     // Create new HomeModel object and assign it to _homeModel variable
    _displayModel = [[DisplayModel alloc]init];
    _displayModel.delegate = self;
    [_displayModel downloadItems];
    _listTableView.delegate = self;

    // Set this view controller object as the delegate for the home model object
    self.filteredArray = [NSMutableArray arrayWithCapacity:[self.athletes count]];

#define ENABLE_SCOPE_BUTTONS 0

    // The table view controller is in a nav controller, and so the containing nav controller is the 'search results controller'
    UINavigationController *searchResultsController = [[self storyboard] instantiateViewControllerWithIdentifier:@"TableSearchResultsNavController"];

    self.searchController = [[UISearchController alloc] initWithSearchResultsController:searchResultsController];

    self.searchController.searchResultsUpdater = self;

    self.searchController.searchBar.frame = CGRectMake(self.searchController.searchBar.frame.origin.x, self.searchController.searchBar.frame.origin.y, self.searchController.searchBar.frame.size.width, 44.0);

    self.listTableView.tableHeaderView = self.searchController.searchBar;

#if ENABLE_SCOPE_BUTTONS

    NSMutableArray *scopeButtonTitles = [[NSMutableArray alloc] init];
    [scopeButtonTitles addObject:NSLocalizedString(@"All", @"Search display controller All button.")];

    for (NSString *sport in [Athlete sportTypeNames]) {
        NSString *displayName = [Product displayNameForType:deviceType];
        [scopeButtonTitles addObject:displayName];
    }

    self.searchController.searchBar.scopeButtonTitles = scopeButtonTitles;
    self.searchController.searchBar.delegate = self;

#endif

    //self.searchController.searchBar.scopeButtonTitles = scopeButtonTitles;

    self.searchController.searchBar.delegate = self;

      self.definesPresentationContext = YES;

;

    // Do any additional setup after loading the view, typically from a nib.
}

UISearchController.m

//
//  SearchResultsTableViewController.m
//  Sample-UISearchController
//
//  Created by James Dempsey on 9/20/14.
//  Copyright (c) 2014 Tapas Software. All rights reserved.
//

#import "SearchResultsTableViewController.h"
#import "DetailViewController.h"
#import "AthleteModel.h"

@implementation SearchResultsTableViewController

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [self.searchResults count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:@"SearchResultCell" forIndexPath:indexPath];
if (cell == nil) {
    Athlete *athlete = [self.searchResults objectAtIndex:indexPath.row];

    cell.textLabel.text = athlete.name;
    NSLog(@"CELL Called");
}
    return cell;


}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    Athlete *athlete = [self.searchResults objectAtIndex:indexPath.row];
    DetailViewController *vc = [[self storyboard] instantiateViewControllerWithIdentifier:@"DetailViewController"];
    self.presentingViewController.navigationItem.title = @"Search";
    vc.athlete = athlete;
    [self.presentingViewController.navigationController pushViewController:vc animated:YES];
}

-(void)viewDidLoad{
    Athlete *athlete = [self.searchResults objectAtIndex:0];
    self.tableView = self.tableView;
    self.tableView.frame = CGRectMake(0, 0, 320, 480);
    NSLog(@"Name: %@", athlete.name);
}

@end
4

5 回答 5

1

假设已设置委托和数据源 - 有或没有搜索栏 - 当由此语句触发时，像 CellforRowAtIndexPath 这样的 UITableview 方法会依次执行

     [self.myTable reloadData];

只是想知道如果你有一个 Searchbar/SearchCONtroller - 搜索逻辑在哪里

         - (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar  {
       // ....

       [self.myTable reloadData]; 
         }
于 2015-01-12T02:32:28.723 回答
0

尝试这个

searchController.delegate = self;
searchController.searchResultsDataSource = self;
searchController.searchResultsDelegate = self;
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{ 
    if (searchController.searchResultsTableView == self.tableView)
    {
        return ...;
    }

    return ...;
}

参考链接如何使用 UISearchBar 和 UISearchDisplayController

于 2015-01-12T07:13:41.200 回答
0

您是否为表格视图设置了委托和数据源？

self.tableView.delegate = self;
self.tableView.dataSource = self;

或类似的东西。

于 2015-01-12T02:13:53.437 回答
0

最后，我刚刚切换回基于 UISearchDisplayController 的搜索。我们现在都很开心。

于 2015-01-12T22:30:11.717 回答
0

您的问题在于以下几行：

// The table view controller is in a nav controller, and so the containing nav controller is the 'search results controller'
    UINavigationController *searchResultsController = [[self storyboard] instantiateViewControllerWithIdentifier:@"TableSearchResultsNavController"];

    self.searchController = [[UISearchController alloc] initWithSearchResultsController:searchResultsController];

您正在使UINavigationController搜索结果控制器不是SearchResultsTableViewController。因此cellForRowAtIndexPath没有被调用SearchResultsTableViewController。我很惊讶它没有崩溃。这应该解决它：

// The table view controller is in a nav controller, and so the containing nav controller is the 'search results controller'
    UINavigationController *searchResultsController = [[self storyboard] instantiateViewControllerWithIdentifier:@"TableSearchResultsNavController"];

    self.searchController = [[UISearchController alloc] initWithSearchResultsController:[searchResultsController.viewControllers firstObject]];
于 2015-08-27T22:01:13.380 回答