我正在努力编辑/保存核心数据,需要一些帮助。我正在使用 NSFetchedResultsController 并在 Core Data 中有一个名为 Golfer 的实体,其属性包括 first_name、last_name、email_id 和其他属性。所以,我知道如何在数据库中添加和删除高尔夫球手。
我正在开发一个名为 ViewManager 的视图控制器(我所有类的基本视图),它里面有 2-3 个自定义 UIView。每当我需要它们时,我都会为它们设置动画。
我将高尔夫球手添加到 tableview,然后在 didSelectRow tableview 方法上,我在同一个 ViewManager 控制器中显示我的编辑视图,并尝试使用以下代码更新编辑视图中的文本字段,但它在 tableview 中的随机索引处更新,而不是为我工作。任何帮助将不胜感激。
- (IBAction)saveEditGolfersView:(id)sender
{
AppDelegate * applicationDelegate = (AppDelegate *) [[UIApplication sharedApplication] delegate];
NSManagedObjectContext * context = [applicationDelegate managedObjectContext];
// Retrieve the entity from the local store -- much like a table in a database
NSEntityDescription *entity = [NSEntityDescription entityForName:@"Golfer" inManagedObjectContext:context];
NSFetchRequest *request = [[NSFetchRequest alloc] init];
[request setEntity:entity];
// Set the sorting -- mandatory, even if you're fetching a single record/object
NSSortDescriptor *sortDescriptor1 = [[NSSortDescriptor alloc] initWithKey:@"first_name" ascending:YES];
NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor1,nil];
[request setSortDescriptors:sortDescriptors];
[sortDescriptors release]; sortDescriptors = nil;
[sortDescriptor1 release]; sortDescriptor1 = nil;
NSError * error;
NSArray * objects = [context executeFetchRequest:request error:&error];
for(int i = 0; i<[objects count]; i++)
{
Golfer * golfguy = [objects objectAtIndex:i];
golfguy.first_name = mEditFirstName.text;
golfguy.middle_name = mEditMiddleName.text;
golfguy.last_name = mEditLastName.text;
golfguy.email_id = mEditEmailField.text;
golfguy.contactNumber = mEditContactNum.text;
golfguy.picture = mEditPictureView.image;
NSLog(@"name-%@", golfguy.first_name);
}
[request release]; request = nil;
error = nil;
[context save:&error];
[UIView animateWithDuration:0.3 delay:0 options:UIViewAnimationOptionCurveEaseOut
animations:^ {
mEditGolfersView.frame = CGRectMake(-480, mEditGolfersView.frame.origin.y, mEditGolfersView.frame.size.width, mEditGolfersView.frame.size.height);
}
completion:^(BOOL finished) {
mEditGolfersView.hidden = YES;
}];
}