objective-c - ios 为什么我的SearchBar点击进入搜索状态，再次点击就会退出搜索状态呢？

Question

我将searchbar放在navigationBar上，点击SearchBar会进入搜索状态（出现浮层），此时正常，但如果再次点击SearchBar，则退出搜索状态，正常应该是继续编辑才对，应该是点击取消按钮才回退出搜索状态，代码如下：

 self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
    self.searchController.searchResultsUpdater = self;
    self.searchController.searchBar.returnKeyType = UIReturnKeySearch;
    self.searchController.searchBar.keyboardType = UIKeyboardTypeDefault;
    self.searchController.searchBar.delegate = self;
    self.searchController.searchBar.placeholder = @"数据/文章/设计师";
    //变暗色
    self.searchController.dimsBackgroundDuringPresentation = NO;
    self.searchController.hidesNavigationBarDuringPresentation = NO;
    //搜索时，背景变模糊
    self.searchController.obscuresBackgroundDuringPresentation = YES;
    self.parentViewController.navigationItem.titleView = self.searchController.searchBar;
    
    
    {//设置SearchView
        
        [UIView animateWithDuration:1 animations:^{
            self.searchView = [[UIView alloc]init];
            self.searchView.frame = CGRectMake(0, 64, self.searchController.view.frame.size.width, self.searchController.view.frame.size.height-64);
            self.searchView.backgroundColor = [UIColor whiteColor];
            [self.searchController.view addSubview:self.searchView];
        }];
    
    }
    
    
    
    UILabel *cc = [[UILabel alloc]initWithFrame:CGRectMake(100, 100, 100, 30)];
    cc.text = @"激情的表演一番";
    cc.textColor = [UIColor greenColor];
    [self.searchView addSubview:cc];
    
    
    
    UISearchBar *searcher = self.searchController.searchBar;
    [searcher setContentMode:UIViewContentModeTopLeft];
    searcher.alpha = 0.6;
    //设置搜索框内的图标
    [searcher setImage:[UIImage imageNamed:@"搜索"] forSearchBarIcon:UISearchBarIconSearch state:UIControlStateNormal];
    //设置searchBar输入框颜色
    [[[searcher.subviews objectAtIndex:0].subviews objectAtIndex:1] setBackgroundColor:SearchBar_Color];
    self.parentViewController.navigationItem.titleView = searcher;
    //设置placeholder颜色
    [[[searcher.subviews objectAtIndex:0].subviews objectAtIndex:1] setValue:[UIColor whiteColor] forKeyPath:@"_placeholderLabel.textColor"];
    // 获取输入框并修改字体颜色
    UITextField *searchField = [searcher valueForKey:@"_searchField"];
    searchField.textColor = [UIColor colorWithWhite:0.475 alpha:1.000];
    
    
    
   
    
    self.searchResltTaleview = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, self.searchView.frame.size.width, self.searchView.frame.size.height) style:UITableViewStylePlain];
    self.searchResltTaleview.delegate = self;
    self.searchResltTaleview.dataSource = self;
    self.searchResltTaleview.tableFooterView = [[UIView alloc]init];
    [self.searchView addSubview:self.searchResltTaleview];
    
    
    //---------上述为创建SearchBar-----
    
    //下述为代理方法：
    //搜索框开始编辑
- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar
{
    searchBar.showsCancelButton = YES;
    //找到searchbar下得UINavigationButton即是cancel按钮，改变他即可
    UIButton *searchBarCancelBtn = searchBar.subviews[0].subviews[2];
    [searchBarCancelBtn setTitle:@"取消" forState:UIControlStateNormal];
    [searchBarCancelBtn setTitleColor:[UIColor colorWithWhite:0.325 alpha:1.000] forState:UIControlStateNormal];
    return YES;
}


//监视搜索框的结果
- (void)updateSearchResultsForSearchController:(UISearchController *)searchController {
    
    NSString *searchText = searchController.searchBar.text;
    NSLog(@"%@", searchText);
   
   
}



    
    

然后我刚才去测试了一下，就是把SearchBar如果放在TableView的header上是没有这种问题的，而一旦放在NavigationBar上将hidesNavigationBarDuringPresentation设为NO，就会出现这种问题，请问这是什么情况

Answer 1

Enfin, j'ai découvert que cette situation se produirait tant que je plaçais le SearchBarController sur la NavigationBar. Enfin, j'ai utilisé TextField pour simuler une SearchBar et je l'ai placé sur la TitleView de la navigation

.