我有一个带有2个tableViews的RootViewController作为子视图(在IB中创建),每个子视图都有自己的tableViewController类(处理fetchRequests等)。
1 tableView是静态的(用户或modelViews没有更改数据)。
tableView 2在标题中有一个按钮,它提供了一个imagePickerController。 到目前为止没有问题。
问题是,当我关闭imagePicker
时 [self dismissModalViewControllerAnimated:YES];
TableView 2变为全屏我试过
[[self rootViewController] dismissModalViewControllerAnimated:YES]
根本没有任何事情发生。它贴在图像选择器上。
我怀疑这是因为很少有视觉创建程序。
有什么想法吗?
提前致谢。
DetartrateD
-(IBAction)addImageTableAPressed {
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
[self presentModalViewController:imagePicker animated:YES];
[imagePicker release];
}
RootViewController
|| ||
|| ||
\/ \/ addImageTableAPressed
TableViewControlA TableViewControlB --------------------->modelViewController
解决mananagedObjectContect .....
- (void)viewDidLoad {...
if(managedObjectContext == nil)
{
managedObjectContext = [(AppDelegate *)[[UIApplication sharedApplication] delegate] managedObjectContext];
NSLog(@"After managedObjectContext: %@", managedObjectContext);
}
...
}
答案 0 :(得分:0)
正如我在其中一篇评论中提到的,我更希望让一个视图控制器管理两个表视图。定义一个UIView(rootView),包括2个子视图(tableViewA和tableViewB)。您的RootViewController视图将是rootView,并且此控制器必须是两个表视图的数据源和委托。我在这里给出的代码绝不是完整的,也不是最优的,但是让你很好地了解实现我的解决方案需要什么。
例如:
@interface RootViewController <UITableViewDelegate, UITableViewDataSource> {
NSArray *dataArrayA;
NSArray *dataArrayB;
UITableView tableViewA;
UITableView tableViewB;
NSManagedObjectContext *context;
}
@property (nonatomic, retain) NSArray *dataArrayA;
@property (nonatomic, retain) NSArray *dataArrayB;
// in IB, link the dataSource and delegate outlets of both tables to RootViewController
@property (nonatomic, retain) IBOutlet UITableView tableViewA;
@property (nonatomic, retain) IBOutlet UITableView tableViewB;
// this property will allow you to pass the MOC to the RootViewController from
// the parent view controller, instead of accessing the app delegate from RootViewController
@property (nonatomic, retain) NSManagedObjectContext *context;
// ... etc.
@end
@implementation RootViewController
@synthesize dataArrayA;
@synthesize dataArrayB;
@synthesize tableViewA;
@synthesize tableViewB;
@synthesize context;
// initialize dataArrayA and dataArrayB
- (void)viewDidLoad {
[super viewDidLoad];
NSError *error = nil;
// initialize and configure your fetch request for data going into tableViewA
NSFetchRequest fetchRequestA = [[NSFetchRequest alloc] init];
// configure the entity, sort descriptors, predicate, etc.
// ...
// perform the fetch
self.dataArrayA = [context executeFetchRequest:fetchRequestA error:&error];
// do the same for the data going into tableViewB - the code is very similar, you
// could factor it out in a private method instead of duplicating it here
// NSFetchRequest fetchRequestB = [[NSFetchRequest alloc] init];
// omitting the details ... etc.
self.dataArrayB = [context executeFetchRequest:fetchRequestB error:&error];
// release objects you don't need anymore, according to memory management rules
[fetchRequestA release];
[fetchRequestB release];
}
// Table view methods
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
// if you have a different number of sections in tableViewA and tableViewB
/*
if (tableView == tableViewA) {
return ??;
} else {
return ??
}
*/
// otherwise, if both table views contain one section
return 1;
}
// Customize the number of rows in each table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (tableView == tableViewA) {
return [dataArrayA count];
} else {
return [dataArrayB count];
}
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = nil;
if (tableView == tableViewA) {
// get the data for the current row in tableViewA
id objectA = [dataArrayA objectAtIndex:indexPath.row];
// configure the cell for tableViewA
cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifierA];
// etc...
} else {
// get the data for the current row in tableViewB
id objectB = [dataArrayB objectAtIndex:indexPath.row];
// configure the cell for tableViewB
cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifierB];
// etc...
}
return cell;
}
// And so on, the same idea applies for the other UITableViewDelegate you would need to
// implement...
- (void)dealloc {
[dataArrayA release];
[dataArrayB release];
[tableViewA release];
[tableViewB release];
[context release];
// etc...
[super dealloc];
}
@end
我希望你会发现这很有用。