Question

我正在尝试构建一个Grouped Sectioned View。我想将数组设置为字典中的对象，但我遇到了空数组问题。这是偶数吗?????有诀窍????

#import "RootViewController.h"

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{    
    [tableView deselectRowAtIndexPath:indexPath animated:YES];

    // Get the specific Node for this row.
    Nodes *nodes = (Nodes *)[nodesMArray objectAtIndex:indexPath.row];
    // Create the Details View Controller and initialize it. 
    nodesDetailView *viewController = [[nodesDetailView alloc] initWithStyle:UITableViewStyleGrouped ];
    [[self navigationController] pushViewController:viewController animated:YES];   

    // Set the title of the view to the nodes name
    viewController.title = [nodes computer_name];
    //Information
    //Network Data
    viewController.ipaddress= [nodes ipaddress];
    viewController.subnet_mask= [nodes subnet_mask];
    viewController.gateway= [nodes gateway];
    viewController.domain_name= [nodes domain_name];
}

#import "nodesDetailViewController. h


@interface nodesDetailView : UITableViewController{

//Network Data
NSString *ipaddress;
NSString *subnet_mask;
NSString *gateway;
NSString *domain_name;

//Grouped 
NSMutableArray *Keys;
NSMutableDictionary *Contents;

}

@property (nonatomic, retain) NSMutableArray *Keys;
@property (nonatomic, retain) NSMutableDictionary *Contents;



@property (nonatomic, retain) NSString *ipaddress;
@property (nonatomic, retain) NSString *subnet_mask;
@property (nonatomic, retain) NSString *gateway;
@property (nonatomic, retain) NSString *domain_name;



@end

#import "nodesDetailViewController. m


@synthesize .......


- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {

    NSMutableArray *keys = [[NSMutableArray alloc] init];
    NSMutableDictionary *contents = [[NSMutableDictionary alloc] init];


    NSString *network = @"Network Data";
    NSString *product = @"Product Details";

  //IS THIS POSSIBLE ??????? Because I get An Empty array 
    [contents setObject:[NSArray arrayWithObjects: ipaddress,subnet_mask, gateway, domain_name, nil] forKey:network];

 return self;
}

先谢谢你。

Answer 1

您添加到阵列的所有字符串尚未分配/初始化。这就是数组为空的原因。你不能只：NSString *emptyString;然后去：[myArray addObject:emptyString];。你的字符串都是空的。

Answer 2

检查您从表格视图中传递的值。他们可能没有。我刚刚使用了这么多数据，我得到了正确的NSLog。

NSMutableDictionary *contents = [[NSMutableDictionary alloc] init];
NSString *my = @"kk";
NSString *my1 = @"polko";
[contents setObject:[NSArray arrayWithObjects: my1,my, nil] forKey:@"o"];
NSLog(@"%@" , contents);

Answer 3

对于那些想知道的人：解决了问题我的代码很好。问题是：它在错误的地方。

代码假设在 - （void）viewDidLoad而不在 - （id）initWithStyle：

我要感谢所有花时间去了解它的人。我不知道为什么我把代码放在那里开始。

Thanx Again

使用NSString的NSArray是否可能？

3 个答案: