带有字典数组的搜索栏
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【中文标题】带有字典数组的搜索栏【英文标题】：Search bar with array from dictionary 【发布时间】：2013-12-12 17:18:45 【问题描述】：我正在尝试在我的应用中实现搜索栏，但遇到了一些问题。 我的 Tableview 中的数据来自 PLIST，并填充到 NSMutableArray 中。 我的 PLIST 看起来像这样，我还可以使用 NSLOG 查看数组中的数据。 现在我想为我的表格视图提供搜索，以便您可以搜索“名称”并且搜索列出了所有适合输入名称的条目。但是如何让我的搜索能够搜索到所有“名称”条目？
更新：我已经这样做了，但是如果我开始在我的搜索字段中输入，则数组保持为空。
- (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;
我像这样将数据填充到我的表格视图中：
cell.textLabel.text = [[[[myArray objectAtIndex:indexPath.section]objectForKey:@"Rows"]objectAtIndex:indexPath.row]objectForKey:@"name"];
我的任何 PLIST 看起来都是这样的。
<?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 & 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 & 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>
【问题讨论】：
【参考方案1】：您可以使用NSPredicate。
我建议如下：
NSPredicate *predicate = [NSPredicate predicateWithFormat: @"name contains[c] %@", stringFromSearchField];
您可以通过以下方式获得过滤后的数组：
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];
【讨论】：
这很好用。非常感谢。结果显示正确。是否有机会在搜索结果中显示单元格的详细信息？除了名称之外，我还使用这种方式显示子名称 if (tableView == self.searchDisplayController.searchResultsTableView) cell.textLabel.text = [[filteredArray objectAtIndex:indexPath.row]objectForKey:@"name"]; cell.detailTextLabel.text = [[filteredArray objectAtIndex:indexPath.row]objectForKey:@"subname"]; NSLog(@"%@", [[filtered objectAtIndex:indexPath.row]objectForKey:@"subname"]); 您可以显示与原始表格视图中相同的数据。因为filteredArray包含完全相同的对象。 NSLOG 显示数据，但它们不显示在搜索结果中。只有名字。 问题在于您的单元格样式。 再次感谢。是的。你是对的，我是瞎子。对不起。以上是关于带有字典数组的搜索栏的主要内容，如果未能解决你的问题，请参考以下文章
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