如何通过 Interface Builder 在 Objective-C 中实现搜索栏

Posted 2023-02-23

【中文标题】如何通过 Interface Builder 在 Objective-C 中实现搜索栏

【英文标题】：How to Implement the Search Bar in Objective-C via Interface Builder

【发布时间】：2012-10-29 20:32:27

【问题描述】：

我有这个列表：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>City 1</key>
    <array>
        <dict>
            <key>area</key>
            <string>City 1</string>
            <key>shop</key>
            <string>Shop 1</string>
            <key>location</key>
            <string>Location 1</string>
            <key>coordinates</key>
            <string>14.66592, 121.03139</string>
        </dict>
        <dict>
            <key>area</key>
            <string>City 1</string>
            <key>shop</key>
            <string>Shop 2</string>
            <key>location</key>
            <string>Location 2</string>
            <key>coordinates</key>
            <string>14.67097, 121.03766</string>
        </dict>
    </array>
    <key>City 2</key>
    <array>
        <dict>
            <key>area</key>
            <string>City 2</string>
            <key>shop</key>
            <string>Shop 1</string>
            <key>location</key>
            <string>Location 1</string>
            <key>coordinates</key>
            <string>14.65549, 120.98280</string>
        </dict>
        <dict>
            <key>area</key>
            <string>City 2</string>
            <key>shop</key>
            <string>Shop 2</string>
            <key>location</key>
            <string>Location 2</string>
            <key>coordinates</key>
            <string>14.65549, 120.98280</string>
        </dict><dict>
            <key>area</key>
            <string>City 2</string>
            <key>shop</key>
            <string>Shop 3</string>
            <key>location</key>
            <string>Location 3</string>
            <key>coordinates</key>
            <string>14.65549, 120.98280</string>
        </dict>
    </array>
</dict>
</plist>

如何在我的表格视图中实现一个搜索栏，其中填充了标题为键“商店”的行？这是我搜索栏上的一些代码 sn-p。

#pragma mark - Custom methods

- (void)filterContentForSearchText:(NSString *)searchText scope:(NSString *)scope

    NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"SELF contains[cd] %@", searchText];
    self.searchResultsArray = [self.theArray filteredArrayUsingPredicate:resultPredicate];


#pragma mark - SearchDisplayController methods
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString

    [self filterContentForSearchText:searchString
                               scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
                                      objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]];

    return YES;


- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption

    [self filterContentForSearchText:[self.searchDisplayController.searchBar text]
                               scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
                                      objectAtIndex:searchOption]];

    return YES;

我对如何定义搜索栏用于查找商店名称的“theArray”数组感到困惑。我什至尝试创建另一个包含所有商店名称的 plist 文件，但它给了我一个错误：

NSRangeException'，原因：'-[__NSCFArray objectAtIndex:]：索引（1）超出范围（1）

所以我选择不使用该方法并坚持我现有的 plist。

提前致谢！

【参考方案1】：

SELF 搜索所有数组，将其更改为 shop。

NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"shop contains [cd] %@", searchText];