Iphone UILabel故障

我在情节提要中创建了一个

ui标签

我的.h文件

@interface EditAndControll : UIViewController

@property (strong, nonatomic) id detailItem;
@property (strong, nonatomic) IBOutlet UILabel *deviceDetailLabel;

- (void)configureView;
@end

我的.m文件

@implementation EditAndControll
@synthesize detailItem = _detailItem;
@synthesize deviceDetailLabel = _deviceDetailLabel;

- (void)setDetailItem:(id)newDetailItem
{
if (_detailItem != newDetailItem) {
    _detailItem = newDetailItem;

    // Update the view.
    [self configureView];
}
}

- (void)configureView
{

    if (self.detailItem)
{
    DeviceCoreInfo *detailDevice = [DeviceCoreInfo alloc];
    detailDevice = self.detailItem;
    _deviceDetailLabel.text = detailDevice.deviceIP;
    self.deviceDetailLabel.text=detailDevice.deviceIP;
    NSLog(@"Device Label %@",_deviceDetailLabel);
    NSLog(@"self Device LaBel %@", self.deviceDetailLabel);
}

}

请告诉我：

Device Label (null)

self Device LaBel (null)

我在主视图中调用的所有内容：

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:@"showDetail"]) {
    NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
    NSManagedObject *selectedObject = [[self fetchedResultsController]      objectAtIndexPath:indexPath];
    [[segue destinationViewController] setDetailItem:selectedObject];
}
}

我做错了什么？请帮忙
 检查您称之为
-（void）configureView
方法的表单

您需要将该方法称为

- (void)viewDidLoad {
   // configureView method From here.
}

谢谢
detailDevice的NSLog是什么意思？您从哪里调用[self-configureView]。此外，UILabel IBOutlet的属性应该是（非原子的，弱的）。哦，删除合成调用，如果您只使用标准调用，则不再需要它们。DetailDevice正常，从EditAndControll方法配置View调用为什么要编写
DeviceCoreInfo*DetailDevice=[DeviceCoreInfo alloc]？你在泄露记忆。七个小时的编码让我的大脑失明！你会好的！！每个人都好，欢迎来电！！！谢谢！