如何在TableView中以可變數組存儲多個選定的行項目

Question

我已經編寫了用於顯示具有3個部分的tableview的代碼，現在我想將選定的行項目存儲到數組中，而當我嘗試下面的代碼時，我得到的數組值為nil。 建議我如何解決此問題下面我在添加代碼和Json示例數據

 { "technicians": { "group": [ { "first_name": "First", "last_name": "Available", "id": "" }, { "first_name": "idea", "last_name": "Chandra", "id": 2885 }, { "first_name": "manson", "last_name": "Tolios", "id": 2878 }, { "first_name": "tata", "last_name": "Masson", "id": 2869 } ], "client": [ { "first_name": "tsms", "last_name": "ysys", "id": 2875 }, { "first_name": "Oscar", "last_name": "tata", "id": 2851 }, { "first_name": "Peter", "last_name": "yaha", "id": 2873 }, { "first_name": "iaka", "last_name": "adad", "id": 2847 }, { "first_name": "taga", "last_name": "uaja", "id": 2917 } ], "contractors": [ { "first_name": "taha" }, { "first_name": "haka" }, { "first_name": "oala" } ] } } 

 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:@"EcsStafflist"]; if(!cell) { cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"CellIdentifier"]; } UILabel *Fname = (UILabel *)[cell viewWithTag:18]; UILabel *Lname = (UILabel *)[cell viewWithTag:19]; Fname.text = [[[mydic objectForKey:[MysectionTitles objectAtIndex:indexPath.section]]objectAtIndex:indexPath.row]valueForKey:@"first_name"]; Lname.text = [[[mydic objectForKey:[MysectionTitles objectAtIndex:indexPath.section]]objectAtIndex:indexPath.row]valueForKey:@"last_name"]; if (indexPath.row %2 ==1) cell.backgroundColor = [UIColor colorWithRed:0.60 green:0.60 blue:0.95 alpha:1.0]; else cell.backgroundColor = [UIColor colorWithRed:0.64 green:0.89 blue:0.61 alpha:1.0]; return cell; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { stringId = [[[mydic objectForKey:[MysectionTitles objectAtIndex:indexPath.section]]objectAtIndex:indexPath.row]objectForKey:@"id"]; if ([tableView cellForRowAtIndexPath:indexPath].accessoryType == UITableViewCellAccessoryCheckmark) { [tableView cellForRowAtIndexPath:indexPath].accessoryType = UITableViewCellAccessoryNone; }else{ [tableView cellForRowAtIndexPath:indexPath].accessoryType = UITableViewCellAccessoryCheckmark; [myArray addObject:stringId]; NSLog(@"myArray %@",myArray); } } 

Answer 1

試試這個代碼

在創建新的NSMubaleArray *storeArray; NSMutableArray，分配storeArray = [[NSMutableArray alloc]init]; 在viewDidLoad

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    switch (indexPath.section) {
        case 0:
            if ([storeArray containsObject:[mainArray objectAtIndex:indexPath.row]])
            {
                [storeArray removeObject:[mainArray objectAtIndex:indexPath.row]];
            }else{
            [storeArray addObject: [mainArray objectAtIndex:indexPath.row]];
            }
            break;
        case 2:
            if ([storeArray containsObject:[mainArray objectAtIndex:indexPath.row]])
            {
                [storeArray removeObject:[mainArray objectAtIndex:indexPath.row]];
            }else{
                [storeArray addObject: [mainArray objectAtIndex:indexPath.row]];
            }
            break;
        case 3 :
            if ([storeArray containsObject:[mainArray objectAtIndex:indexPath.row]])
            {
                [storeArray removeObject:[mainArray objectAtIndex:indexPath.row]];
            }else{
                [storeArray addObject: [mainArray objectAtIndex:indexPath.row]];
            }
            break;
        default:
            break;
    }

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

Answer 2

1. 首先為數組創建一個出口，然后在.m中進行合成

2. 現在在viewdidLoad中初始化數組

3. 現在實現cellforrowatIndexpath和didSelectRowAtIndexPath

   查找代碼，讓我知道您是否需要澄清

 String_Name = [ArrayName objectAtIndex:indexPath.row]; if ([tableView cellForRowAtIndexPath:indexPath].accessoryType == UITableViewCellAccessoryCheckmark) { [tableView cellForRowAtIndexPath:indexPath].accessoryType = UITableViewCellAccessoryNone; }else{ [tableView cellForRowAtIndexPath:indexPath].accessoryType = UITableViewCellAccessoryCheckmark; [myArray addObject:String_Name]; NSLog(@"myArray %@",myArray); }