如何在 UISearchController 的子类中覆盖 "searchBar" 属性？

Question

我遇到这样的问题：Hide UISearchBar Cancel Button

我对 UISearchController 和 UISearchBar 进行了子类化，并覆盖了 UISearchBar 中的方法 layoutSubviews。

如何在我的自定义 UISearchController 中用自定义 UISearchBar 覆盖 searchBar 属性？

更新 1

要使用自定义 UISearchBar 实现属性我在 MyUISearchController:

@property(nonatomic, strong, readonly) UISearchBar *searchBar;

和

@synthesize searchBar=_searchBar;

- (UISearchBar *)searchBar {
    return [MySearchBar new];
}

但是 UISearchController 还是使用默认值 searchBar..

更新

在 h 文件中：

@interface MySearchController : UISearchController <UITableViewDelegate, UITableViewDataSource>

在 m 文件中：

@interface MySearchController () <UISearchDisplayDelegate, UISearchControllerDelegate,
UISearchBarDelegate, UISearchResultsUpdating, SearchAutocompleteLoader>

@property UISearchController *searchController;

@property (strong, nonatomic) UITableView *searchResultTable;
@property UIView *viewForSearchBar;
@property (nonatomic) NSInteger filterSettings;
@property (strong, nonatomic) UILabel *matchesLabel;
@property (strong, nonatomic) UIView *loading;
@property (strong, nonatomic) UIView *foggView;

@end

- (instancetype)initWith:(UIView *)viewForSearch foggView:(UIView *)view delegate:(id)delegate andResultTableView:(UITableView *)tableView
{
    self.viewForSearchBar = viewForSearch;
    self.searchResultTable = tableView;
    self.foggView = view;
    self.searchDelegate = delegate;
    [self configureSearchController];
    return self;
}

- (void)configureSearchController {
    self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];

    self.searchController.searchResultsUpdater = self;
    self.searchController.delegate = self;
    self.searchController.hidesNavigationBarDuringPresentation = NO;
    self.searchController.dimsBackgroundDuringPresentation = NO;
    [self loadFilterSettings];
    self.searchController.searchBar.delegate = self;
    [self.searchController.searchBar setShowsCancelButton:NO];
    //self.searchController.searchBar.searchBarStyle = UISearchBarStyleDefault;

    [self.searchController.searchBar setBackgroundImage:[UIImage imageWithCGImage:(__bridge CGImageRef)([UIColor clearColor])]];
    [self.searchController.searchBar setImage:[UIImage imageNamed:@"iconSearchSettings"] forSearchBarIcon:UISearchBarIconBookmark state:UIControlStateNormal];
    self.searchController.searchBar.frame = CGRectMake(0, 0, self.view.frame.size.width, self.viewForSearchBar.frame.size.height);
    self.viewForSearchBar.tintColor = [UIColor yellowColor];
   // [self.viewForSearchBar addSubview:self.searchController.searchBar];

    self.searchController.searchBar.barTintColor = [UIColor whiteColor];
    self.searchController.searchBar.tintColor = [UIColor blackColor];
    //self.searchController.searchBar.backgroundColor = [UIColor whiteColor];

    [self.viewForSearchBar addSubview:self.searchController.searchBar];

    for (UIView *subView in self.searchController.searchBar.subviews) {
        if ([subView isKindOfClass:[UITextField class]]) {
            [subView setTintColor:[UIColor blueColor]];
            [[(UITextField *) subView valueForKey:@"textInputTraits"] setValue:[UIColor blueColor] forKey:@"insertionPointColor"];
        }
    }

    [self.searchController setActive:YES];
    [self.searchController setActive:NO];
}

Answer 1

import UIKit

class MySearchController: UISearchController {

    override func viewWillLayoutSubviews() {
        super.viewWillLayoutSubviews()
        searchBar.showsCancelButton = false
    }
}

Answer 2

为了自定义搜索栏属性 通过首先子class搜索栏 (UISearchBar) 开始自定义过程。然后，在搜索控制器的 subclass 中使用这个自定义搜索栏，最后在 ViewController class.

中使用它们

参考本教程： UISearchController Customization

Answer 3

请参阅此教程以自定义 Swift 中的 UISearchBar：

Customise UISearchBar

Objective - C : 在ViewDidLoad中添加代码。您已经声明了 UISearchBar

的对象

[searchBar setShowsCancelButton:NO];

Swift : 在 ViewDidLoad

searchBar.showsCancelButton = false

Answer 4

UISearchController 的 searchBar 是一个计算属性，你必须存储你的自定义 searchBar 并且 return 它在调用 searchBar.

时

下面是 Swift 中的一些代码：

var mySearchBar = MySearchBar()

override var searchBar: UISearchBar {
    get{
        return mySearchBar;
    }
}

如何在 UISearchController 的子类中覆盖 "searchBar" 属性？

How to override "searchBar" property in subclass of UISearchController?

properties

objective-c

uisearchbar

ios

uisearchcontroller