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從字典中搜索帶有數組的欄

[英]Search bar with array from dictionary

 原文  2013-12-12 17:18:45  7   1    ios/ objective-c/ uitableview/ uisearchbar

問題描述

我試圖在我的應用程序中實現搜索欄，但遇到一些問題。 我的Tableview中的數據來自PLIST，並填充到NSMutableArray中。 我的PLIST看起來像這樣，我也可以使用NSLOG查看數組中的數據。 現在，我想提供對我的表視圖的搜索，以便您可以搜索“名稱”，並且搜索列出適合輸入名稱的所有條目。 但是，如何使我的搜索能夠搜索所有“名稱”條目？

更新：我已經做到了，但是如果我開始在搜索字段中輸入，數組將保持為空。 

- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
    NSPredicate *resultPredicate = [NSPredicate
                                    predicateWithFormat:@"name contains[c] %@",
                                    searchText];

    NSMutableArray *filtered = [myArray filteredArrayUsingPredicate:resultPredicate];

    NSLog(@"%@", filtered);
}

#pragma mark - UISearchDisplayController delegate methods
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller
shouldReloadTableForSearchString:(NSString *)searchString
{
    [self filterContentForSearchText:searchString
                               scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
                                      objectAtIndex:[self.searchDisplayController.searchBar
                                                     selectedScopeButtonIndex]]];

    return YES;
}

我將數據填充到表視圖中，如下所示： 

cell.textLabel.text = [[[[myArray objectAtIndex:indexPath.section]objectForKey:@"Rows"]objectAtIndex:indexPath.row]objectForKey:@"name"];

我的任何PLIST看起來都是這樣。 

<?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>Hot Drinks</key>
    <array>
        <dict>
            <key>title</key>
            <string>COFFEE SPECIALS</string>
            <key>Rows</key>
            <array>
                <dict>
                    <key>price</key>
                    <string>3,20 Euro</string>
                    <key>name</key>
                    <string>Espresso</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string></string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>3,20 euro</string>
                    <key>name</key>
                    <string>Ristretto</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>Short &amp; strong espresso</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>3,50 Euro</string>
                    <key>name</key>
                    <string>Espresso Macchiato</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>Espresso with hot milk </string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>4,80 Euro</string>
                    <key>name</key>
                    <string>Espresso Doppio</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>Double espresso</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>3,50 Euro</string>
                    <key>name</key>
                    <string>Coffee</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>Freshly brewed regular coffee</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>4,00 Euro</string>
                    <key>name</key>
                    <string>Cappuccino</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>Espresso with hot milk and milk froth</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>4,50 Euro</string>
                    <key>name</key>
                    <string>White Coffee</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>coffee with a lot of hot milk and milk froth</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>4,50 Euro</string>
                    <key>name</key>
                    <string>Latte Macchiato</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>Espresso with a lot of hot milk and milk froth, served in a glass</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>0,50 Euro</string>
                    <key>name</key>
                    <string>Flavours of your choice</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>Chocolate, caramel, white chocolate, hazelnut </string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>6,50 Euro</string>
                    <key>name</key>
                    <string>Hot “Valrhona” chocolate</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>Hot “Valrhona” chocolate prepared with milk and cream </string>
                </dict>
            </array>
        </dict>
        <dict>
            <key>title</key>
            <string>TEA SPECIALTIES</string>
            <key>Rows</key>
            <array>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>English Breakfast – Ceylon / St. James</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>BLACK TEA</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Darjeeling Summer Gold</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>BLACK TEA</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Classic Chai – Indien</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>BLACK TEA</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Assam Barie</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>BLACK TEA</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Earl Grey (Darjeeling)</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>FLAVOURED BLACK TEA</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Dung Ti Oolong – China</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>OOLONG TEA</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Green Dragon</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>GREEN TEA</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Grüner Tee Morgentau</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>FLAVOURED GREEN TEA</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Jasmin Gold</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>FLAVOURED GREEN TEA</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Pai Mu Tan Silver Typ</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>WHITE TEA</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Get the Power</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>FLAVOURED FRUIT INFUSION</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Red Fruit</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>FLAVOURED FRUIT INFUSION</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Herbs and Ginger</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>HERBAL INFUSION</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Original Roibosh</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>HERBAL INFUSION</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Verbena</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>HERBAL INFUSION</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Fruity Camomile</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>HERBAL INFUSION</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Mint &amp; Fresh</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>HERBAL INFUSION</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Equilibrium</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>FLAVOURED HERBAL INFUSION</string>
                </dict>
                <dict>
                    <key>price</key>
                    <string>5,00 Euro</string>
                    <key>name</key>
                    <string>Fruits of Paradise</string>
                    <key>link</key>
                    <string></string>
                    <key>subname</key>
                    <string>FLAVOURED HERBAL INFUSION</string>
                </dict>
            </array>
        </dict>
    </array>
</dict>
</plist>

1 個解決方案

解決方案1
 0 已采納  2013-12-12 18:03:57

您可以使用NSPredicate 。

我建議如下： 

NSPredicate *predicate = [NSPredicate predicateWithFormat: @"name contains[c] %@", stringFromSearchField];

您可以通過以下方式獲得過濾后的數組： 

NSMutableArray *rows = [NSMutableArray array];
for(NSDictionary *dict in myArray)
{
    NSArray *tempRows = dict[@"Rows"];
    if([tempRows isKindOfClass: [NSArray class]] && tempRows.count)
    {
        [rows addObjectsFromArray:tempRows];
    }
}
NSArray *filteredArray = [rows filteredArrayUsingPredicate: predicate];

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