ios - 使用 tableview 中的搜索栏搜索数据

Question

我是 IOS 开发人员的新手。我的问题是我想使用项目名称搜索数据。当我键入 B 时，B 开始显示数据。这是我的 nsmutable 数组值。

(
        {
        counts = 0;
        "drycleaning_price" = 10;
        id = 2;
        imagename = "";
        "iron_price" = 16;
        name = Bedsheet;
        "wash_price" = 15;
        "washiron_price" = 14;
    },
        {
        counts = 0;
        "drycleaning_price" = 12;
        id = 3;
        imagename = d;
        "iron_price" = 16;
        name = "Coat(Man)";
        "wash_price" = 14;
        "washiron_price" = 13;
    },
        {
        counts = 0;
        "drycleaning_price" = 15;
        id = 4;
        imagename = f;
        "iron_price" = 10;
        name = "Jeans(Man)";
        "wash_price" = 12;
        "washiron_price" = 16;
    },
        {
        counts = 0;
        "drycleaning_price" = 14;
        id = 3;
        imagename = "";
        "iron_price" = 12;
        name = "Pants(Kid)";
        "wash_price" = 18;
        "washiron_price" = 17;
    },
        {
        counts = 0;
        "drycleaning_price" = 15;
        id = 2;
        imagename = s;
        "iron_price" = 10;
        name = "Pants(Man)";
        "wash_price" = 13;
        "washiron_price" = 12;
    },
        {
        counts = 0;
        "drycleaning_price" = 12;
        id = 1;
        imagename = "";
        "iron_price" = 32;
        name = "Pillow Cover";
        "wash_price" = 30;
        "washiron_price" = 15;
    },

这是我的截图

这是我的代码

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return 100;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    if (tableView == self.searchDisplayController.searchResultsTableView) {
        return [self.searchResults count];

    } else {
        return [arrayCounts count];
    }

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{

    static NSString *simpleTableIdentifier = @"SimpleTableItem";
    customcell *cell = (customcell *)[self.tableview dequeueReusableCellWithIdentifier:simpleTableIdentifier];
    if (cell == nil)
        cell = [[[NSBundle mainBundle] loadNibNamed:@"customcell" owner:self options:nil] objectAtIndex:0];

    if (tableView == self.searchDisplayController.searchResultsTableView) {
            cell.textLabel.text = [[self.searchResults objectAtIndex:indexPath.row ]objectForKey:@"name"];
cell.txt_value.text = [NSString stringWithFormat:@"%@",self.searchResults[indexPath.row][@"counts"]];
cell.lbl_price.text=[NSString stringWithFormat:@"%@",arrayCounts[indexPath.row][@"drycleaning_price"]];
        } else
        {


        cell.txt_value.text = [NSString stringWithFormat:@"%@",arrayCounts[indexPath.row][@"counts"]];
        cell.lbl_title.text=[NSString stringWithFormat:@"%@",arrayCounts[indexPath.row][@"name"]];
cell.lbl_price.text=[NSString stringWithFormat:@"%@",arrayCounts[indexPath.row][@"drycleaning_price"]];
        }
[cell.stepper addTarget:self action:@selector(itemsChange:) forControlEvents:UIControlEventValueChanged];
    return cell;
}

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

    [self.searchResults removeAllObjects];

    NSPredicate *resultpredicate=[NSPredicate predicateWithFormat:@"SELF contains [cd] %@",self.searchResults];
    self.searchResults=[[arrayCounts valueForKey:@"name" ] filteredArrayUsingPredicate:resultpredicate];




    NSLog(@"searchlist %@",self.searchResults );
}

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

    return YES;
}

我想用名字搜索。请帮帮我兄弟。谢谢你提前....

Answer 1

首先，将您的对象数组命名为 ItemClass。制作对象数组将使您的生活变得轻松。

创建一个继承自 NSObject 类的类。

把这个放进去

@interface ItemClass : NSObject

@property (strong, nonatomic) NSDate *count;
@property (strong, nonatomic) NSString *name;
@property (strong, nonatomic) NSString *dryCleanPrice;

@end

然后像这样存储你的数据

ItemClass *item = [[ItemClass alloc] init];
item.name =@"yourName";
item.dryCleanPrice = @"334";
item.count = @"3";
[arrTempTableData addObject:item];

然后使用两个可变数组保存 Item 类的对象

一个。 arr临时表数据

arr表数据

然后在cellForRowAtIndexPath中加入如下代码

- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
 { static NSString *simpleTableIdentifier = @"SimpleTableItem";
customcell *cell = (customcell *)[self.tableview dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil)
    cell = [[[NSBundle mainBundle] loadNibNamed:@"customcell" owner:self options:nil] objectAtIndex:0];



ItemClass *item = arrTableData[indexPath.row];

    cell.txt_value.text = item.count;
    cell.lbl_title.text=item.name;
    cell.lbl_price.text=item.dryCleanPrice;

   [cell.stepper addTarget:self action:@selector(itemsChange:) forControlEvents:UIControlEventValueChanged];
return cell;
}

然后在搜索栏中

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{

    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF.name beginswith[c] %@ ", searchText];
    self.arrTableData = [self.arrTempTableData filteredArrayUsingPredicate:predicate].mutableCopy;   
    self.arrTableData = self.arrTempTableData.count;
    [self.tableView reloadData];
    if(searchText.length == 0){
        self.arrTableData = nil;
        self.arrTableData = self.arrTempTableData.mutableCopy;
    }