Xml 可变数组的问题
我有这个密码Xml 可变数组的问题,xml,nsmutablearray,Xml,Nsmutablearray,我有这个密码 - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { if([elementName isEqualToString:@"xml"]) return; //There is nothing to do i
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName
namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
if([elementName isEqualToString:@"xml"])
return;
//There is nothing to do if we encounter the Books element here.
//If we encounter the Book element howevere, we want to add the book object to the array
// and release the object.
if([elementName isEqualToString:@"bewerb"]) {
[xmlmasterviewcontroller.books addObject:aBook];
NSLog(@"Test ::::: %@",[xmlmasterviewcontroller.books objectAtIndex:1]);
// [aBook release];
aBook = nil;
}
else
[aBook setValue:currentElementValue forKey:elementName];
// [currentElementValue release];
currentElementValue = nil;
}
#import <UIKit/UIKit.h>
@interface XMLAppDelegate : UIResponder <UIApplicationDelegate>
@property (strong, nonatomic) UIWindow *window;
@property (readonly, strong, nonatomic) NSManagedObjectContext *managedObjectContext;
@property (readonly, strong, nonatomic) NSManagedObjectModel *managedObjectModel;
@property (readonly, strong, nonatomic) NSPersistentStoreCoordinator *persistentStoreCoordinator;
- (void)saveContext;
- (NSURL *)applicationDocumentsDirectory;
@end
#import <UIKit/UIKit.h>
@class XMLAppDelegate, Book,XMLMasterViewController;
@interface XMLParser : NSObject {
NSMutableString *currentElementValue;
XMLAppDelegate *appDelegate;
XMLMasterViewController *xmlmasterviewcontroller;
Book *aBook;
}
- (XMLParser *) initXMLParser;
@end
#import <UIKit/UIKit.h>
@interface Book : NSObject {
NSInteger bookID;
NSString *title; //Same name as the Entity Name.
NSString *author; //Same name as the Entity Name.
NSString *summary; //Same name as the Entity Name.
}
@property (nonatomic, readwrite) NSInteger bookID;
@property (nonatomic, retain) NSString *title;
@property (nonatomic, retain) NSString *author;
@property (nonatomic, retain) NSString *summary;
@end
#import <UIKit/UIKit.h>
#import <CoreData/CoreData.h>
@class Book, XMLAppDelegate;
@interface XMLMasterViewController : UITableViewController <NSFetchedResultsControllerDelegate> {
XMLAppDelegate *appDelegate;
}
@property (strong, nonatomic) NSFetchedResultsController *fetchedResultsController;
@property (strong, nonatomic) NSManagedObjectContext *managedObjectContext;
@property (nonatomic, retain) NSMutableArray *books;
@end
#导入
#进口
@教材，XMLAppDelegate；
@接口XMLMasterViewController:UITableViewController{
XMLAppDelegate*appDelegate；
}
@属性（强，非原子）NSFetchedResultsController*fetchedResultsController；
@属性（强，非原子）NSManagedObjectContext*managedObjectContext；
@属性（非原子，保留）NSMUTABLEARRY*图书；
@结束
#import "XMLMasterViewController.h"
#import "XMLParser.h"
#import "XMLDetailViewController.h"
#import "Book1.h"
@interface XMLMasterViewController ()
- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath;
@end
@implementation XMLMasterViewController
@synthesize fetchedResultsController = __fetchedResultsController;
@synthesize managedObjectContext = __managedObjectContext;
@synthesize books;
- (void)awakeFromNib
{
[super awakeFromNib];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
// appDelegate = (XMLAppDelegate *)[[UIApplication sharedApplication] delegate];
NSURL *url = [[NSURL alloc] initWithString:@"http://sites.google.com/site/iphonesdktutorials/xml/Books.xml"];
NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithContentsOfURL:url];
//Initialize the delegate.
XMLParser *parser = [[XMLParser alloc] initXMLParser];
//Set delegate
[xmlParser setDelegate:parser];
//Start parsing the XML file.
BOOL success = [xmlParser parse];
if(success){
NSLog(@"No Errors");
// Book *aBook = [self.books objectAtIndex:1];
}
else
NSLog(@"Error Error Error!!!");
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// Set up the edit and add buttons.
self.navigationItem.leftBarButtonItem = self.editButtonItem;
UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(insertNewObject)];
self.navigationItem.rightBarButtonItem = addButton;
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
// Customize the number of sections in the table view.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// return [[self.fetchedResultsController sections] count];
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// id <NSFetchedResultsSectionInfo> sectionInfo = [[self.fetchedResultsController sections] objectAtIndex:section];
// return [sectionInfo numberOfObjects];
return 1;
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
[self configureCell:cell atIndexPath:indexPath];
Book *aBook = [books objectAtIndex:indexPath.row];
cell.textLabel.font = [UIFont fontWithName:@"helvetica" size:14];
cell.textLabel.text = aBook.title;
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
*/
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the managed object for the given index path
NSManagedObjectContext *context = [self.fetchedResultsController managedObjectContext];
[context deleteObject:[self.fetchedResultsController objectAtIndexPath:indexPath]];
// Save the context.
NSError *error = nil;
if (![context save:&error]) {
/*
Replace this implementation with code to handle the error appropriately.
abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
*/
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
}
}
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// The table view should not be re-orderable.
return NO;
}
- (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];
}
}
#pragma mark - Fetched results controller
- (NSFetchedResultsController *)fetchedResultsController
{
if (__fetchedResultsController != nil) {
return __fetchedResultsController;
}
// Set up the fetched results controller.
// Create the fetch request for the entity.
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
// Edit the entity name as appropriate.
NSEntityDescription *entity = [NSEntityDescription entityForName:@"Event" inManagedObjectContext:self.managedObjectContext];
[fetchRequest setEntity:entity];
// Set the batch size to a suitable number.
[fetchRequest setFetchBatchSize:20];
// Edit the sort key as appropriate.
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"timeStamp" ascending:NO];
NSArray *sortDescriptors = [NSArray arrayWithObjects:sortDescriptor, nil];
[fetchRequest setSortDescriptors:sortDescriptors];
// Edit the section name key path and cache name if appropriate.
// nil for section name key path means "no sections".
NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:self.managedObjectContext sectionNameKeyPath:nil cacheName:@"Master"];
aFetchedResultsController.delegate = self;
self.fetchedResultsController = aFetchedResultsController;
NSError *error = nil;
if (![self.fetchedResultsController performFetch:&error]) {
/*
Replace this implementation with code to handle the error appropriately.
abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
*/
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
return __fetchedResultsController;
}
- (void)controllerWillChangeContent:(NSFetchedResultsController *)controller
{
[self.tableView beginUpdates];
}
- (void)controller:(NSFetchedResultsController *)controller didChangeSection:(id <NSFetchedResultsSectionInfo>)sectionInfo
atIndex:(NSUInteger)sectionIndex forChangeType:(NSFetchedResultsChangeType)type
{
switch(type) {
case NSFetchedResultsChangeInsert:
[self.tableView insertSections:[NSIndexSet indexSetWithIndex:sectionIndex] withRowAnimation:UITableViewRowAnimationFade];
break;
case NSFetchedResultsChangeDelete:
[self.tableView deleteSections:[NSIndexSet indexSetWithIndex:sectionIndex] withRowAnimation:UITableViewRowAnimationFade];
break;
}
}
- (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject
atIndexPath:(NSIndexPath *)indexPath forChangeType:(NSFetchedResultsChangeType)type
newIndexPath:(NSIndexPath *)newIndexPath
{
UITableView *tableView = self.tableView;
switch(type) {
case NSFetchedResultsChangeInsert:
[tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath] withRowAnimation:UITableViewRowAnimationFade];
break;
case NSFetchedResultsChangeDelete:
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
break;
case NSFetchedResultsChangeUpdate:
[self configureCell:[tableView cellForRowAtIndexPath:indexPath] atIndexPath:indexPath];
break;
case NSFetchedResultsChangeMove:
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
[tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath]withRowAnimation:UITableViewRowAnimationFade];
break;
}
}
- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller
{
[self.tableView endUpdates];
}
/*
// Implementing the above methods to update the table view in response to individual changes may have performance implications if a large number of changes are made simultaneously. If this proves to be an issue, you can instead just implement controllerDidChangeContent: which notifies the delegate that all section and object changes have been processed.
- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller
{
// In the simplest, most efficient, case, reload the table view.
[self.tableView reloadData];
}
*/
- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath
{
NSManagedObject *managedObject = [self.fetchedResultsController objectAtIndexPath:indexPath];
cell.textLabel.text = [[managedObject valueForKey:@"timeStamp"] description];
}
- (void)insertNewObject
{
// Create a new instance of the entity managed by the fetched results controller.
NSManagedObjectContext *context = [self.fetchedResultsController managedObjectContext];
NSEntityDescription *entity = [[self.fetchedResultsController fetchRequest] entity];
NSManagedObject *newManagedObject = [NSEntityDescription insertNewObjectForEntityForName:[entity name] inManagedObjectContext:context];
// If appropriate, configure the new managed object.
// Normally you should use accessor methods, but using KVC here avoids the need to add a custom class to the template.
[newManagedObject setValue:[NSDate date] forKey:@"timeStamp"];
// Save the context.
NSError *error = nil;
if (![context save:&error]) {
/*
Replace this implementation with code to handle the error appropriately.
abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
*/
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
}
@end
#导入“XMLMasterViewController.h”
#导入“XMLParser.h”
#导入“XMLDetailViewController.h”
#导入“Book1.h”
@接口XMLMasterViewController（）
-（void）configureCell:（UITableViewCell*）单元格atIndexPath:（NSIndexPath*）indexPath；
@结束
@XMLMasterViewController的实现
@综合fetchedResultsController=\uu fetchedResultsController；
@综合managedObjectContext=u managedObjectContext；
@综合书籍；
-（无效）从NIB中唤醒
{
[超级awakeFromNib]；
}
-（无效）未收到记忆警告
{
[超级记忆警告]；
//释放所有未使用的缓存数据、图像等。
}
#pragma标记-视图生命周期
-（无效）viewDidLoad
{
//appDelegate=（XMLAppDelegate*）[[UIApplication sharedApplication]委托]；
NSURL*url=[[NSURL alloc]initWithString:@”http://sites.google.com/site/iphonesdktutorials/xml/Books.xml"];
NSXMLParser*xmlParser=[[NSXMLParser alloc]initwithcontentsofull:url]；
//初始化委托。
XMLParser*parser=[[XMLParser alloc]initXMLParser]；
//集合委托
[xmlParser setDelegate:parser]；
//开始解析XML文件。
BOOL success=[xmlParser parse]；
如果（成功）{
NSLog（“无错误”）；
//Book*aBook=[self.books对象索引：1]；
}
其他的
NSLog（@“错误！！！”）；
[超级视图下载]；
//加载视图后，通常从nib执行任何其他设置。
//设置编辑和添加按钮。
self.navigationItem.leftBarButtonItem=self.editButtonItem；
UIBarButtonItem*addButton=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemAddTarget:self action:@selector（insertNewObject）]；
self.navigationItem.rightBarButtonItem=addButton；
}
-（无效）视图卸载
{
[超级视频下载]；
//释放主视图的所有保留子视图。
//例如，self.myOutlet=nil；
}
-（无效）视图将显示：（BOOL）动画
{
[超级视图将显示：动画]；
}
-（无效）视图显示：（BOOL）动画
{
[超级视图显示：动画]；
}
-（无效）视图将消失：（BOOL）已设置动画
{
[超级视图将消失：动画]；
}
-（无效）视图消失：（BOOL）已设置动画
{
[超级视窗消失：动画]；
}
-（布尔）应自动旋转指针面定向：（UIInterfaceOrientation）interfaceOrientation
{
//对于支持的方向返回YES
返回（interfaceOrientation！=UIInterfaceOrientation肖像向上向下）；
}
//自定义表视图中的节数。
-（NSInteger）表格视图中的节数：（UITableView*）表格视图
{
//返回[[self.fetchedResultsController节]计数]；
返回1；
}
-（NSInteger）表视图：（UITableView*）表视图行数节：（NSInteger）节
{
//id sectionInfo=[[self.fetchedResultsController节]objectAtIndex:section]；
//返回[sectionInfo numberOfObjects]；
返回1；
}
//自定义表格视图单元格的外观。
-（UITableViewCell*）tableView:（UITableView*）tableView cellForRowAtIndexPath:（NSIndexPath*）indexPath
{
静态NSString*CellIdentifier=@“Cell”；
UITableViewCell*单元格=[tableView dequeueReusableCellWithIdentifier:CellIdentifier]；
[self-configureCell:cell-atIndexPath:indexPath]；
Book*aBook=[books objectAtIndex:indexath.row]；
cell.textLabel.font=[UIFont fontWithName:@“helvetica”大小：14]；
cell.textlab.text=aBook.title；
cell.accessoryType=UITableViewCellAccessoryDisclosureIndicator；
返回单元；
}
/*
//替代以支持表视图的条件编辑。
-（BOOL）tableView:（UITableView*）tableView caneditrowatinexpath:（nsindepath*）indepath
{
//如果不希望指定的项可编辑，则返回“否”。
返回YES；
}
*/
-（void）tableView:（UITableView*）tableView提交的编辑样式：（UITableViewCellEditingStyle）行的编辑样式索引路径：（NSIndexPath*）索引路径
{
如果（editingStyle==UITableViewCellEditingStyleDelete）{
//删除给定索引路径的托管对象
NSManagedObjectContext*上下文=[self.fetchedResultsController managedObjectContext]；
[上下文删除对象：[self.fetchedResultsController对象索引路径：indexPath]]；
//保存上下文。
n错误*错误=nil；
如果（！[上下文保存：&错误]）{
/*
将此实现替换为适当处理错误的代码。
abort（）导致应用程序生成崩溃日志并终止。您不应该在装运应用程序中使用此函数，尽管它在开发过程中可能很有用。
*/
NSLog（@“未解决的错误%@，%@”，错误，[error userInfo]）；
中止（）；
}
}
}
-（BOOL）tableView:（UITableView*）tableView可以移动rowatinexpath:（nsindepath*）indepath
{
//表视图不应可重新排序。
返回否；
}
-（void）prepareForSegue:（UIStoryboardSegue*）segue发送方：（id）发送方
{
if（[[segue identifier]IsequalString:@“showDetail”]）{
NSIndexPath*indexPath=[self.tableView indexPathForSelectedRow]；
NSManagedObject*selectedObject=[[self-fetchedResultsController]对象索引路径：indexPath]；
[[segue destinationViewController]setDetailItem:
#import "Book.h"
@implementation Book
@synthesize title, author, summary, bookID;
@end
#import <UIKit/UIKit.h>
#import <CoreData/CoreData.h>
@class Book, XMLAppDelegate;
@interface XMLMasterViewController : UITableViewController <NSFetchedResultsControllerDelegate> {
XMLAppDelegate *appDelegate;
}
@property (strong, nonatomic) NSFetchedResultsController *fetchedResultsController;
@property (strong, nonatomic) NSManagedObjectContext *managedObjectContext;
@property (nonatomic, retain) NSMutableArray *books;
@end
#import "XMLMasterViewController.h"
#import "XMLParser.h"
#import "XMLDetailViewController.h"
#import "Book1.h"
@interface XMLMasterViewController ()
- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath;
@end
@implementation XMLMasterViewController
@synthesize fetchedResultsController = __fetchedResultsController;
@synthesize managedObjectContext = __managedObjectContext;
@synthesize books;
- (void)awakeFromNib
{
[super awakeFromNib];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
// appDelegate = (XMLAppDelegate *)[[UIApplication sharedApplication] delegate];
NSURL *url = [[NSURL alloc] initWithString:@"http://sites.google.com/site/iphonesdktutorials/xml/Books.xml"];
NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithContentsOfURL:url];
//Initialize the delegate.
XMLParser *parser = [[XMLParser alloc] initXMLParser];
//Set delegate
[xmlParser setDelegate:parser];
//Start parsing the XML file.
BOOL success = [xmlParser parse];
if(success){
NSLog(@"No Errors");
// Book *aBook = [self.books objectAtIndex:1];
}
else
NSLog(@"Error Error Error!!!");
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// Set up the edit and add buttons.
self.navigationItem.leftBarButtonItem = self.editButtonItem;
UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(insertNewObject)];
self.navigationItem.rightBarButtonItem = addButton;
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
// Customize the number of sections in the table view.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// return [[self.fetchedResultsController sections] count];
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// id <NSFetchedResultsSectionInfo> sectionInfo = [[self.fetchedResultsController sections] objectAtIndex:section];
// return [sectionInfo numberOfObjects];
return 1;
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
[self configureCell:cell atIndexPath:indexPath];
Book *aBook = [books objectAtIndex:indexPath.row];
cell.textLabel.font = [UIFont fontWithName:@"helvetica" size:14];
cell.textLabel.text = aBook.title;
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
*/
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the managed object for the given index path
NSManagedObjectContext *context = [self.fetchedResultsController managedObjectContext];
[context deleteObject:[self.fetchedResultsController objectAtIndexPath:indexPath]];
// Save the context.
NSError *error = nil;
if (![context save:&error]) {
/*
Replace this implementation with code to handle the error appropriately.
abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
*/
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
}
}
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// The table view should not be re-orderable.
return NO;
}
- (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];
}
}
#pragma mark - Fetched results controller
- (NSFetchedResultsController *)fetchedResultsController
{
if (__fetchedResultsController != nil) {
return __fetchedResultsController;
}
// Set up the fetched results controller.
// Create the fetch request for the entity.
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
// Edit the entity name as appropriate.
NSEntityDescription *entity = [NSEntityDescription entityForName:@"Event" inManagedObjectContext:self.managedObjectContext];
[fetchRequest setEntity:entity];
// Set the batch size to a suitable number.
[fetchRequest setFetchBatchSize:20];
// Edit the sort key as appropriate.
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"timeStamp" ascending:NO];
NSArray *sortDescriptors = [NSArray arrayWithObjects:sortDescriptor, nil];
[fetchRequest setSortDescriptors:sortDescriptors];
// Edit the section name key path and cache name if appropriate.
// nil for section name key path means "no sections".
NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:self.managedObjectContext sectionNameKeyPath:nil cacheName:@"Master"];
aFetchedResultsController.delegate = self;
self.fetchedResultsController = aFetchedResultsController;
NSError *error = nil;
if (![self.fetchedResultsController performFetch:&error]) {
/*
Replace this implementation with code to handle the error appropriately.
abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
*/
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
return __fetchedResultsController;
}
- (void)controllerWillChangeContent:(NSFetchedResultsController *)controller
{
[self.tableView beginUpdates];
}
- (void)controller:(NSFetchedResultsController *)controller didChangeSection:(id <NSFetchedResultsSectionInfo>)sectionInfo
atIndex:(NSUInteger)sectionIndex forChangeType:(NSFetchedResultsChangeType)type
{
switch(type) {
case NSFetchedResultsChangeInsert:
[self.tableView insertSections:[NSIndexSet indexSetWithIndex:sectionIndex] withRowAnimation:UITableViewRowAnimationFade];
break;
case NSFetchedResultsChangeDelete:
[self.tableView deleteSections:[NSIndexSet indexSetWithIndex:sectionIndex] withRowAnimation:UITableViewRowAnimationFade];
break;
}
}
- (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject
atIndexPath:(NSIndexPath *)indexPath forChangeType:(NSFetchedResultsChangeType)type
newIndexPath:(NSIndexPath *)newIndexPath
{
UITableView *tableView = self.tableView;
switch(type) {
case NSFetchedResultsChangeInsert:
[tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath] withRowAnimation:UITableViewRowAnimationFade];
break;
case NSFetchedResultsChangeDelete:
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
break;
case NSFetchedResultsChangeUpdate:
[self configureCell:[tableView cellForRowAtIndexPath:indexPath] atIndexPath:indexPath];
break;
case NSFetchedResultsChangeMove:
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
[tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath]withRowAnimation:UITableViewRowAnimationFade];
break;
}
}
- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller
{
[self.tableView endUpdates];
}
/*
// Implementing the above methods to update the table view in response to individual changes may have performance implications if a large number of changes are made simultaneously. If this proves to be an issue, you can instead just implement controllerDidChangeContent: which notifies the delegate that all section and object changes have been processed.
- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller
{
// In the simplest, most efficient, case, reload the table view.
[self.tableView reloadData];
}
*/
- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath
{
NSManagedObject *managedObject = [self.fetchedResultsController objectAtIndexPath:indexPath];
cell.textLabel.text = [[managedObject valueForKey:@"timeStamp"] description];
}
- (void)insertNewObject
{
// Create a new instance of the entity managed by the fetched results controller.
NSManagedObjectContext *context = [self.fetchedResultsController managedObjectContext];
NSEntityDescription *entity = [[self.fetchedResultsController fetchRequest] entity];
NSManagedObject *newManagedObject = [NSEntityDescription insertNewObjectForEntityForName:[entity name] inManagedObjectContext:context];
// If appropriate, configure the new managed object.
// Normally you should use accessor methods, but using KVC here avoids the need to add a custom class to the template.
[newManagedObject setValue:[NSDate date] forKey:@"timeStamp"];
// Save the context.
NSError *error = nil;
if (![context save:&error]) {
/*
Replace this implementation with code to handle the error appropriately.
abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
*/
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
}
@end