Question

我的表格中有三个部分.each部分包含我需要根据打开的部分搜索值的不同数组。数组是： 1.Colors 2.Numbers 3.Alaphabet

请帮助我，我是iOS新手...提前给我解决方案...

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier];
            }

   cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;


    for (UIView *view in cell.contentView.subviews) {
        [view removeFromSuperview];
    }
    switch (indexPath.section) {
        case 0:

            cell.textLabel.text =self.colors[indexPath.row];
                        break;
        case 1:
            cell.textLabel.text =self.numbers[indexPath.row];
            break;
        case 2:
            cell.textLabel.text =self.alpha[indexPath.row];
            break;

        default:
            break;
    }

    return cell;
}

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
    return 50;
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
    UIButton *titleButton=[UIButton buttonWithType:UIButtonTypeRoundedRect];
    titleButton.frame = CGRectMake(0, 0, 320, 30);
    [titleButton setBackgroundColor:[UIColor clearColor]];
    [titleButton addTarget:self action:@selector(handleTouchUpInside:) forControlEvents:UIControlEventTouchUpInside];
    titleButton.tag = section;
    NSString *sectionName;
    switch (section)
    {
        case 0: sectionName = NSLocalizedString(@"Colors", @"Colors");
            break;
        case 1: sectionName = NSLocalizedString(@"Numbers", @"Numbers");
            break;
        case 2: sectionName = NSLocalizedString(@"Alabaphet", @"Alabaphet");
            break;
        default: sectionName = @"";
            break;
    }
    [titleButton setTitle:sectionName forState:UIControlStateNormal];
    return titleButton;
}
-(void)handleTouchUpInside:(UIButton *)sender
{

    if(selectedIndex== sender.tag)
    {
        selectedIndex=50;
    }
    else
    {
        selectedIndex=sender.tag;
    }

    [menuTableView reloadData];
}

Answer 1

快速的核心数据代码3

func checkDataInCD(entityName:String,keyName:String) -> Array<Any> {
        var  temp = Array<Any>()

        do{
            //getting all datas from entity
            let request = self .setFetchReques(entityName: entityName)
            request.predicate = self .setPredicate(keyName: keyName, entityName:entityName)
             temp = try  self.getContext().fetch(request) as Array
            if temp .count == 0 {
                return temp
            }else{
                return temp
            }

        }catch{
//            print("problem with fetching core data")
        }
        return temp
    }

    func getContext() -> NSManagedObjectContext {
        let context = (UIApplication .shared .delegate as! AppDelegate).persistentContainer.viewContext
        return context
    }
    func setFetchReques(entityName:String) -> NSFetchRequest<NSFetchRequestResult> {
        let request = NSFetchRequest<NSFetchRequestResult>(entityName:entityName)
        request .returnsObjectsAsFaults = false
        return request
    }
    func setPredicate(keyName:String, entityName:String) -> NSPredicate {

        let resultPredicate = NSPredicate(format: "key = %@", keyName)
        let request = NSFetchRequest<NSFetchRequestResult>(entityName: entityName)
        request.predicate = resultPredicate
        return resultPredicate
    }
    func deleteDataInCD(entityName : String, keyName: String) {
        do{
            let request = self .setFetchReques(entityName: entityName)
            request.predicate = self .setPredicate(keyName: keyName, entityName:entityName)
            let results = try self.getContext().fetch(request) as Array
//            print(entityName)
//            print(keyName)
//            print(results.count)
            if results.count > 0{
                for result in results as! [NSManagedObject]{
                    if result.value(forKey: "data") != nil  {
                        self.getContext().delete(result)
                    }
                    do{
                        try self .getContext().save()
                    } catch{
//                        print("error deleting data from core data")
                    }
                }
            }


        } catch{
//            print("no records found")

        }

    }



self.deleteDataInCD(entityName: "NewsListing", keyName: self.pageType)
                    let menuObj = NewsListingModel(categories:self.dataArray)
                    let newsListing = NewsListing(context: self.getContext())
                    let encodedObject = NSKeyedArchiver.archivedData(withRootObject:menuObj) as NSObject?
                    newsListing.data = encodedObject
                    newsListing.key  = self.pageType
                    (UIApplication .shared .delegate as! AppDelegate).saveContext()


import UIKit

class NewsListingModel: NSObject,NSCoding {


    var categories: [[String:Any]]
    init(categories:[[String:Any]]) {

        self.categories = categories

    }
    // MARK: NSCoding
    required convenience init(coder aDecoder: NSCoder) {
        let categories = aDecoder.decodeObject(forKey: "categories")
        self.init(categories: categories! as! [[String:Any]])
    }

    func encode(with aCoder: NSCoder) {
//        print(self.categories)
        aCoder.encode(self.categories, forKey: "categories")
        //aCoder.encodeConditionalObject(self.categories, forKey: "categories")
    }
}

uisearchbar并基于打开的部分进行搜索

1 个答案: