UIAlertView in UISplitViewController's DetailView not triggering UIAlertViewDelegate Code - uisplitviewcontroller

I created a Master-Detail project for the iPad in Xcode. I then added a button and an action that the button triggers (I connected the button to the action in IB) an UIAlertView with three buttons, then added the UIAlertViewDelegate to the .h file.
When the button is pressed the AlertView is displayed but when clicking on any button inside the AlertView the UIAlertViewDelegate method in the .m file is not called.
This is a download link to the project enter link description here
I am using the code below...
DetailViewController.h
#import <UIKit/UIKit.h>
#interface DetailViewController : UIViewController <UISplitViewControllerDelegate, UIAlertViewDelegate>
#property (strong, nonatomic) id detailItem;
#property (weak, nonatomic) IBOutlet UILabel *detailDescriptionLabel;
-(IBAction)triggerAlert:(id)sender;
#end
DetailViewController.m
#import "DetailViewController.h"
#interface DetailViewController ()
#property (strong, nonatomic) UIPopoverController *masterPopoverController;
- (void)configureView;
#end
#implementation DetailViewController
#pragma mark - Managing the detail item
- (void)setDetailItem:(id)newDetailItem
{
if (_detailItem != newDetailItem) {
_detailItem = newDetailItem;
// Update the view.
[self configureView];
}
if (self.masterPopoverController != nil) {
[self.masterPopoverController dismissPopoverAnimated:YES];
}
}
- (void)configureView
{
// Update the user interface for the detail item.
if (self.detailItem) {
self.detailDescriptionLabel.text = [self.detailItem description];
}
}
-(IBAction)triggerAlert:(id)sender
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"UIAlertMessage Title" message:#"UIAlertMessage" delegate:nil cancelButtonTitle:nil otherButtonTitles:#"Button 1", #"Button 2", #"Button 3", nil];
[alert show];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self configureView];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
self.title = NSLocalizedString(#"Detail", #"Detail");
}
return self;
}
#pragma mark - Split view
- (void)splitViewController:(UISplitViewController *)splitController willHideViewController:(UIViewController *)viewController withBarButtonItem:(UIBarButtonItem *)barButtonItem forPopoverController:(UIPopoverController *)popoverController
{
barButtonItem.title = NSLocalizedString(#"Master", #"Master");
[self.navigationItem setLeftBarButtonItem:barButtonItem animated:YES];
self.masterPopoverController = popoverController;
}
- (void)splitViewController:(UISplitViewController *)splitController willShowViewController:(UIViewController *)viewController invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem
{
// Called when the view is shown again in the split view, invalidating the button and popover controller.
[self.navigationItem setLeftBarButtonItem:nil animated:YES];
self.masterPopoverController = nil;
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSLog(#"This code was run!");
NSString *title = [alertView buttonTitleAtIndex:buttonIndex];
if([title isEqualToString:#"Button 1"])
{
NSLog(#"Button 1 was selected.");
}
else if([title isEqualToString:#"Button 2"])
{
NSLog(#"Button 2 was selected.");
}
else if([title isEqualToString:#"Button 3"])
{
NSLog(#"Button 3 was selected.");
}
}
#end
Any help would be greatly appreciated. I have used the same code before and have implemented UIAlertViews without any problems before and am not sure what is going on here...

[[UIAlertView alloc] initWith... delegate:nil
^^^
If you're setting the delegate to nil, how do you expect it to be self?

Related

UICollectionView in UINavgationController

I want to do a simple example.
I have a rootViewController that is a UINavgationController, and there is a UIViewController in that UINavgationController. Now I want to create UICollectionView in the UIViewController, but I am getting an error.
here is the code:
#import "AppDelegate.h"
#import "XJViewController.h"
#interface AppDelegate ()
#end
#implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
XJViewController *xjv = [[XJViewController alloc]init];
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:xjv];
self.window.rootViewController = nav;
[self.window makeKeyAndVisible];
return YES;
}
#import <UIKit/UIKit.h>
#interface XJViewController : UIViewController<UICollectionViewDelegate,UICollectionViewDataSource>
#end
#import "XJViewController.h"
#interface XJViewController ()
#end
#implementation XJViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.view.backgroundColor = [UIColor whiteColor];
self.title = #"XJ";
self.navigationController.navigationBar.barTintColor = [UIColor redColor];
NSDictionary *dicColor = #{NSForegroundColorAttributeName : [UIColor whiteColor]};
self.navigationController.navigationBar.titleTextAttributes = dicColor;
UICollectionViewFlowLayout *fLayout = [[UICollectionViewFlowLayout alloc]init];
UICollectionView *cv = [[UICollectionView alloc]initWithFrame:self.view.bounds collectionViewLayout:fLayout];
[cv registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:#"myeCell"];
cv.dataSource = self;
cv.delegate = self;
[self.view addSubview:cv];
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return 4;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"myCell" forIndexPath:indexPath];
cell.backgroundColor = [UIColor redColor];
return cell;
}
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'could not dequeue a view
of kind: UICollectionElementKindCell with identifier myCell - must
register a nib or a class for the identifier or connect a prototype
cell in a storyboard'
Please help me figure out what the problem is.
[cv registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:#"myeCell"];
The identifier here is different from the one you are using in -cellForItemAtIndexPath

Method cellForRowAtIndexPath method was not get called

Am a beginner in iOS, am creating an application with the help of table view. I just run my application, while running the app, the app does not calling the method cellForRowIndexPath. Am using Json as web service. In the output screen, the parsing data is shown but it is not get display in simulator. i put breakpoint and i understood the cellForRowIndexPath path was not called. I drag datasourse and data delegate to files onner of xib file. but nothing is occurring... the table view is get displaying but there is no content... am screwed.. Any one please help me...
#implementation MSPackagesController
#synthesize packageTable;
#synthesize packages;
#synthesize mainCtrl;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
-(void)viewDidLoad
{
[super viewDidLoad];
}
-(void)parseData {
MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
hud.animationType = MBProgressHUDAnimationFade;
hud.detailsLabelText = #"Loading...";
MSJsonParser *parser = [[MSJsonParser alloc]initWithParserType:kPackagesParsing];
parser._parserSource = self;
[parser requestParsingWithUrl:PACKAGES_LIST_URL];
}
-(void)sharePackageFromCell:(UIButton*)btn
{
MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
hud.animationType = MBProgressHUDAnimationFade;
hud.detailsLabelText = #"Loading...";
NSString *title = [[self.packages objectAtIndex:btn.tag] packageName];
/*NSURL *imgUrl = [NSURL URLWithString:[[self.promotions objectAtIndex:btn.tag] picture]];
NSData *imgdata = [NSData dataWithContentsOfURL:imgUrl];
UIImage *image = [UIImage imageWithData:imgdata];*/
// NSURL *imgUrl = [NSURL URLWithString:[[self.packages objectAtIndex:btn.tag] picture]];
NSString *desc = [[self.packages objectAtIndex:btn.tag] packageDescription];
NSString *message = #"Visit GlamZapp in AppStore";
UIActivityViewController *activityCtrl = [[UIActivityViewController alloc]initWithActivityItems:[NSArray arrayWithObjects:title,desc,message, nil] applicationActivities:nil];
activityCtrl.excludedActivityTypes = #[UIActivityTypePrint,UIActivityTypePostToWeibo,UIActivityTypeMessage,UIActivityTypeAssignToContact];
activityCtrl.completionHandler = ^(NSString *activityType, BOOL completed)
{
NSLog(#" activityType: %#", activityType);
NSLog(#" completed: %i", completed);
};
[self.mainCtrl presentViewController:activityCtrl animated:YES completion:^{
[MBProgressHUD hideAllHUDsForView:self.view animated:YES];
}];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return [packages count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
MSPackagesCell *cell = (MSPackagesCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
NSArray *cells = [[NSBundle mainBundle]loadNibNamed:[Common checkDeviceforController:#"MSPackagesCell"] owner:nil options:nil];
for (id eachObject in cells) {
cell = eachObject;
break;
}
//cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
// Configure the cell...
// NSURL *imgUrl = [NSURL URLWithString:[[self.promotions objectAtIndex:indexPath.row]picture]];
//[cell.promoImg setImageWithURL:imgUrl placeholderImage:[UIImage imageNamed:#"slider_dummy.jpg"] andSize:cell.promoImg.frame.size];
cell.PackageName.text = [[self.packages objectAtIndex:indexPath.row] packageName];
cell.PackageDescription.text = [[self.packages objectAtIndex:indexPath.row] packageDescription];
// NSMutableAttributedString *strikedPrice = [[NSMutableAttributedString alloc]initWithString:[NSString stringWithFormat:#"%# %#",CURRENCY_UNIT,[[self.packages objectAtIndex:indexPath.row] packageAmount] ] ];
// [strikedPrice addAttribute:NSStrikethroughStyleAttributeName value:[NSNumber numberWithInt:2] range:NSMakeRange(0, [strikedPrice length])];
//cell.oldPriceLabel.attributedText = strikedPrice;
cell.PriceLabel.text = [NSString stringWithFormat:#"%# %#",CURRENCY_UNIT,[[self.packages objectAtIndex:indexPath.row] packageAmount] ];
//[string appendFormat:#"%#\r\n", message];
// cell.promocodelabel.text = [NSString stringWithFormat:#"Promo code: %#",[[self.packages objectAtIndex:indexPath.row] promoCode]];
cell.ShareButton.tag = indexPath.row;
[cell.ShareButton addTarget:self action:#selector(sharePackageFromCell:) forControlEvents:UIControlEventTouchUpInside];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// MSPackageDetailsController *promDet = [[MSPackageDetailsController alloc]initWithNibName:[Common checkDeviceforController:#"MSPackageDetailsController"] bundle:nil];
// promDet.delegate = self;
// promDet.offerId = [[self.packages objectAtIndex:indexPath.row] promoId];
// promDet.title = [[self.packages objectAtIndex:indexPath.row] promoTitle];
// [self.delegate didSelectPromotion:promDet];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
-(void)foundPackagesData:(NSArray *)packa
{
[MBProgressHUD hideAllHUDsForView:self.view animated:YES];
self.packages = packa;
[self.packageTable reloadData];
}
-(void)connectionFailed
{
[MBProgressHUD hideAllHUDsForView:self.view animated:YES];
}
I think you have not added UITableviewDataSource and UITableViewDelegate in your .h file
Add UITableViewDataSource,UITableViewDelegate in interface (.h) file
#interface MSPackagesController : UIViewController <UITableViewDataSource,UITableViewDelegate>

ZUUIRevealController - Memory allocations keeps on increasing & slow UIAlertView & UIActionsheet

I am starting with new iOS app in which I have to use Reveal control. So I planned to use great ZUUIRevealController library. I just created UI for 2 - 3 screens . In one of those screen I have to shown UIAlertView & UIActionsheet. But I realised that UIAlertView & UIActionsheet shows very slowly (it adds black overlay first & then shows UIAlertView/UIActionsheet, kind of alert view hangs while showing. Animation is not smooth). I didn't added any logic for coding just created the UI. I didn't use any background thread / dispatch_asyn(). So there is no issue of updating UI from background thread. So I checked the memory leaks & allocations. I didn't see any memory leaks , but memory allocations keeps on increasing while I reveal the menu & push new view controller. It doesn't decrese when I pop the view controller. Here are the screenshots :
1) When app launches
2) After some time , when I push new view controller, pop view controller
I know ZUUIRevealController library creates new instance of view controller every time I select a row from Menu. So I crated the instance variables of view controllers in .h file , but still I have same problem.
Here is my code
// AppDelegate.m
// On SplashViewController , I decide whether to show menu or Login screen
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.splashViewController = [[SplashViewController alloc]initWithNibName:#"SplashViewController" bundle:nil];
self.window.rootViewController = self.splashViewController;
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
[self customizeUIControlsAppearance];
return YES;
}
// SplashViewController.m
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
BOOL isLoggedIn = YES;
if(isLoggedIn){
[self showMenuViewController];
}
else{
[self showStartUpViewController];
}
}
-(void)showStartUpViewController
{
StartUpViewController *startUpViewController = [[StartUpViewController alloc]initWithNibName:#"StartUpViewController" bundle:nil];
UINavigationController *navController=[[UINavigationController alloc] initWithRootViewController:startUpViewController];
[self presentViewController:navController animated:NO completion:^{
}];
}
-(void)showMenuViewController
{
MenuViewController *menuViewController=[[MenuViewController alloc] init];
CategoryViewController *categoryViewController=[[CategoryViewController alloc]initWithNibName:#"CategoryViewController" bundle:nil];
categoryViewController.isViewControllerShownFromMenu = YES;
UINavigationController *navController=[[UINavigationController alloc] initWithRootViewController:categoryViewController];
RevealController *revealController=[[RevealController alloc] initWithFrontViewController:navController rearViewController:menuViewController];
[self presentViewController:revealController animated:NO completion:^{
}];
}
// MenuViewController.m
// SettingsViewController & NewsViewController are decalred in .h file with property & syntheszie
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
RevealController *revealController = [self.parentViewController isKindOfClass:[RevealController class]] ? (RevealController *)self.parentViewController : nil;
// Switch using Section Number
switch (indexPath.section) {
case OTHER_SECTION:
switch (indexPath.row) {
case NEWS:
[self showNewsViewControllerUsingRevealController:revealController];
break;
case SETTINGS:
[self showSettingsViewControllerUsingRevealController:revealController];
break;
default:
break;
}
break;
default:
break;
}
}
#pragma mark - Show News & Settings View Controllers
-(void)showNewsViewControllerUsingRevealController:(RevealController*)revealController
{
if ([revealController.frontViewController isKindOfClass:[UINavigationController class]] && ![((UINavigationController *)revealController.frontViewController).topViewController isKindOfClass:[NewsViewController class]])
{
if(!self.newsViewController)
self.newsViewController = [[NewsViewController alloc] initWithNibName:#"NewsViewController" bundle:nil];
self.newsViewController.isViewControllerShownFromMenu = YES;
UINavigationController *navigationController= [[UINavigationController alloc] initWithRootViewController:self.newsViewController];
[revealController setFrontViewController:navigationController animated:NO];
}
else
{
[revealController revealToggle:self];
}
}
-(void)showSettingsViewControllerUsingRevealController:(RevealController*)revealController
{
if ([revealController.frontViewController isKindOfClass:[UINavigationController class]] && ![((UINavigationController *)revealController.frontViewController).topViewController isKindOfClass:[SettingsViewController class]])
{
if(!self.settingsViewController)
self.settingsViewController= [[SettingsViewController alloc] initWithNibName:#"SettingsViewController" bundle:nil];
self.settingsViewController.isViewControllerShownFromMenu = YES;
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:self.settingsViewController];
[revealController setFrontViewController:navigationController animated:NO];
}
else
{
[revealController revealToggle:self];
}
}
// Code for shwoing UIAlertView & UIActionsheet
-(void)showAlertWithTitle:(NSString*)title andMessage:(NSString*)message
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:title message:message delegate:nil cancelButtonTitle:#"OK" otherButtonTitles: nil];
[alert show];
}
-(void)btnInviteTapped:(id)sender event:(UIEvent*)event
{
UIActionSheet *actionSheet = [[UIActionSheet alloc]initWithTitle:NSLocalizedString(#"FRIENDS_VC:INVIT_ACTIONSHEET_TITLE", nil) delegate:self cancelButtonTitle:NSLocalizedString(#"FRIENDS_VC:ACTIONSHEET_CANCEL_BUTTON",nil) destructiveButtonTitle:nil otherButtonTitles:NSLocalizedString(#"FRIENDS_VC:ACTIONSHEET_SMS_BUTTON",nil),NSLocalizedString(#"FRIENDS_VC:ACTIONSHEET_EMAIL_BUTTON",nil), nil];
actionSheet.actionSheetStyle = UIActionSheetStyleBlackTranslucent;
[actionSheet showInView:self.view];
}
By the way I have 11 menu items.
My Login & Regsiter flow is not embedded in MenuViewController. On Login & REgsiter , UIAlertView & UIActionSheet shows smoothly.
Any idea whats going wrong here ? Did I make some mistake in coding ?
Why my UIAlertView & UIActionsheet are not showing smoothly ?
Any kind of help is appreciated. Thanks.

ASIHTTPRequest backed RestKit object mapping

We must support some old code that runs using ASIHTTPRequest, but we want the object mapping and core data support provided by RestKit. Does anyone know of any way of "gluing" these two together?
I picture using ASIHTTPRequest for the requests and someone manually forwarding the payload over to RestKit.
Ok, so this wasn't too hard after all. Here is a class I wrote just for this (no disclaimers, it works for us and may be useful for someone else). You can use this as a direct replacement to the standard RKObjectLoader class.
.h file
#import <RestKit/RestKit.h>
#import "ASIFormDataRequest.h"
#interface ASIHTTPObjectLoader : ASIFormDataRequest <RKObjectMapperDelegate> {
RKObjectManager* _objectManager;
RKObjectMapping* _objectMapping;
RKObjectMappingResult* _result;
RKObjectMapping* _serializationMapping;
NSString* _serializationMIMEType;
NSObject* _sourceObject;
NSObject* _targetObject;
}
#property (nonatomic, retain) RKObjectMapping* objectMapping;
#property (nonatomic, readonly) RKObjectManager* objectManager;
#property (nonatomic, readonly) RKObjectMappingResult* result;
#property (nonatomic, retain) RKObjectMapping* serializationMapping;
#property (nonatomic, retain) NSString* serializationMIMEType;
#property (nonatomic, retain) NSObject* sourceObject;
#property (nonatomic, retain) NSObject* targetObject;
- (void) setDelegate:(id<RKObjectLoaderDelegate>)delegate;
+ (id)loaderWithResourcePath:(NSString*)resourcePath objectManager: (RKObjectManager*)objectManager delegate:(id<RKObjectLoaderDelegate>)delegate;
- (id)initWithResourcePath:(NSString*)resourcePath objectManager:(RKObjectManager*)objectManager delegate:(id<RKObjectLoaderDelegate>)delegate;
- (void)handleResponseError;
#end
.m file
#import "ASIHTTPObjectLoader.h"
#interface ASIFormDataRequest (here)
- (void) reportFailure;
- (void) reportFinished;
#end
#implementation ASIHTTPObjectLoader
#synthesize objectManager = _objectManager;
#synthesize targetObject = _targetObject, objectMapping = _objectMapping;
#synthesize result = _result;
#synthesize serializationMapping = _serializationMapping;
#synthesize serializationMIMEType = _serializationMIMEType;
#synthesize sourceObject = _sourceObject;
- (void) setDelegate:(id<RKObjectLoaderDelegate>)_delegate {
[super setDelegate: _delegate];
}
+ (id)loaderWithResourcePath:(NSString*)resourcePath objectManager:(RKObjectManager*)objectManager delegate:(id<RKObjectLoaderDelegate>)_delegate {
return [[[self alloc] initWithResourcePath:resourcePath objectManager:objectManager delegate:_delegate] autorelease];
}
- (id)initWithResourcePath:(NSString*)resourcePath objectManager:(RKObjectManager*)objectManager delegate:(id<RKObjectLoaderDelegate>)_delegate {
self = [super initWithURL: [objectManager.client URLForResourcePath: resourcePath]];
if ( self ) {
self.delegate = _delegate;
_objectManager = objectManager;
}
return self;
}
- (void)dealloc {
// Weak reference
_objectManager = nil;
[_sourceObject release];
_sourceObject = nil;
[_targetObject release];
_targetObject = nil;
[_objectMapping release];
_objectMapping = nil;
[_result release];
_result = nil;
[_serializationMIMEType release];
[_serializationMapping release];
[super dealloc];
}
- (void) reset {
[_result release];
_result = nil;
}
- (void)finalizeLoad:(BOOL)successful error:(NSError*)_error {
//_isLoading = NO;
if (successful) {
//_isLoaded = YES;
if ([self.delegate respondsToSelector:#selector(objectLoaderDidFinishLoading:)]) {
[self.delegate performSelectorOnMainThread:#selector(objectLoaderDidFinishLoading:)
withObject:self waitUntilDone:YES];
}
[super reportFinished];
/*
NSDictionary* userInfo = [NSDictionary dictionaryWithObject:_response
forKey:RKRequestDidLoadResponseNotificationUserInfoResponseKey];
[[NSNotificationCenter defaultCenter] postNotificationName:RKRequestDidLoadResponseNotification
object:self
userInfo:userInfo];
*/
} else {
NSDictionary* _userInfo = [NSDictionary dictionaryWithObject:(_error ? _error : (NSError*)[NSNull null])
forKey:RKRequestDidFailWithErrorNotificationUserInfoErrorKey];
[[NSNotificationCenter defaultCenter] postNotificationName:RKRequestDidFailWithErrorNotification
object:self
userInfo:_userInfo];
}
}
// Invoked on the main thread. Inform the delegate.
- (void)informDelegateOfObjectLoadWithResultDictionary:(NSDictionary*)resultDictionary {
NSAssert([NSThread isMainThread], #"RKObjectLoaderDelegate callbacks must occur on the main thread");
RKObjectMappingResult* result = [RKObjectMappingResult mappingResultWithDictionary:resultDictionary];
if ([self.delegate respondsToSelector:#selector(objectLoader:didLoadObjectDictionary:)]) {
[self.delegate objectLoader: (RKObjectLoader*)self didLoadObjectDictionary:[result asDictionary]];
}
if ([self.delegate respondsToSelector:#selector(objectLoader:didLoadObjects:)]) {
[self.delegate objectLoader: (RKObjectLoader*)self didLoadObjects:[result asCollection]];
}
if ([self.delegate respondsToSelector:#selector(objectLoader:didLoadObject:)]) {
[self.delegate objectLoader: (RKObjectLoader*)self didLoadObject:[result asObject]];
}
[self finalizeLoad:YES error:nil];
}
#pragma mark - Subclass Hooks
/**
Overloaded by ASIHTTPManagedObjectLoader to serialize/deserialize managed objects
at thread boundaries.
#protected
*/
- (void)processMappingResult:(RKObjectMappingResult*)result {
NSAssert(isSynchronous || ![NSThread isMainThread], #"Mapping result processing should occur on a background thread");
[self performSelectorOnMainThread:#selector(informDelegateOfObjectLoadWithResultDictionary:) withObject:[result asDictionary] waitUntilDone:YES];
}
#pragma mark - Response Object Mapping
- (RKObjectMappingResult*)mapResponseWithMappingProvider:(RKObjectMappingProvider*)mappingProvider toObject:(id)targetObject error:(NSError**)_error {
NSString* MIMEType = [[self responseHeaders] objectForKey: #"Content-Type"];
id<RKParser> parser = [[RKParserRegistry sharedRegistry] parserForMIMEType: MIMEType];
NSAssert1(parser, #"Cannot perform object load without a parser for MIME Type '%#'", MIMEType);
// Check that there is actually content in the response body for mapping. It is possible to get back a 200 response
// with the appropriate MIME Type with no content (such as for a successful PUT or DELETE). Make sure we don't generate an error
// in these cases
id bodyAsString = [self responseString];
if (bodyAsString == nil || [[bodyAsString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] length] == 0) {
RKLogDebug(#"Mapping attempted on empty response body...");
if (self.targetObject) {
return [RKObjectMappingResult mappingResultWithDictionary:[NSDictionary dictionaryWithObject:self.targetObject forKey:#""]];
}
return [RKObjectMappingResult mappingResultWithDictionary:[NSDictionary dictionary]];
}
id parsedData = [parser objectFromString:bodyAsString error:_error];
if (parsedData == nil && _error) {
return nil;
}
// Allow the delegate to manipulate the data
if ([self.delegate respondsToSelector:#selector(objectLoader:willMapData:)]) {
parsedData = [[parsedData mutableCopy] autorelease];
[self.delegate objectLoader: (RKObjectLoader*)self willMapData:&parsedData];
}
RKObjectMapper* mapper = [RKObjectMapper mapperWithObject:parsedData mappingProvider:mappingProvider];
mapper.targetObject = targetObject;
mapper.delegate = self;
RKObjectMappingResult* result = [mapper performMapping];
// Log any mapping errors
if (mapper.errorCount > 0) {
RKLogError(#"Encountered errors during mapping: %#", [[mapper.errors valueForKey:#"localizedDescription"] componentsJoinedByString:#", "]);
}
// The object mapper will return a nil result if mapping failed
if (nil == result) {
// TODO: Construct a composite error that wraps up all the other errors. Should probably make it performMapping:&error when we have this?
if (_error) *_error = [mapper.errors lastObject];
return nil;
}
return result;
}
- (RKObjectMappingResult*)performMapping:(NSError**)_error {
NSAssert( isSynchronous || ![NSThread isMainThread], #"Mapping should occur on a background thread");
RKObjectMappingProvider* mappingProvider;
if (self.objectMapping) {
NSString* rootKeyPath = self.objectMapping.rootKeyPath ? self.objectMapping.rootKeyPath : #"";
RKLogDebug(#"Found directly configured object mapping, creating temporary mapping provider for keyPath %#", rootKeyPath);
mappingProvider = [[RKObjectMappingProvider new] autorelease];
[mappingProvider setMapping:self.objectMapping forKeyPath:rootKeyPath];
} else {
RKLogDebug(#"No object mapping provider, using mapping provider from parent object manager to perform KVC mapping");
mappingProvider = self.objectManager.mappingProvider;
}
return [self mapResponseWithMappingProvider:mappingProvider toObject:self.targetObject error:_error];
}
- (void)performMappingOnBackgroundThread {
NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
NSError* _error = nil;
_result = [[self performMapping:&_error] retain];
NSAssert(_result || _error, #"Expected performMapping to return a mapping result or an error.");
if (self.result) {
[self processMappingResult:self.result];
} else if (_error) {
[self failWithError: _error];
}
[pool drain];
}
- (BOOL)canParseMIMEType:(NSString*)MIMEType {
if ([[RKParserRegistry sharedRegistry] parserForMIMEType: MIMEType]) {
return YES;
}
RKLogWarning(#"Unable to find parser for MIME Type '%#'", MIMEType);
return NO;
}
- (BOOL)isResponseMappable {
if ([self responseStatusCode] == 503) {
[[NSNotificationCenter defaultCenter] postNotificationName:RKServiceDidBecomeUnavailableNotification object:self];
}
NSString* MIMEType = [[self responseHeaders] objectForKey: #"Content-Type"];
if ( error ) {
[self.delegate objectLoader: (RKObjectLoader*)self didFailWithError: error];
[self finalizeLoad:NO error: error];
return NO;
} else if ([self responseStatusCode] == 204) {
// The No Content (204) response will never have a message body or a MIME Type. Invoke the delegate with self
[self informDelegateOfObjectLoadWithResultDictionary:[NSDictionary dictionaryWithObject:self forKey:#""]];
return NO;
} else if (NO == [self canParseMIMEType: MIMEType]) {
// We can't parse the response, it's unmappable regardless of the status code
RKLogWarning(#"Encountered unexpected response with status code: %ld (MIME Type: %#)", (long) [self responseStatusCode], MIMEType);
NSError* _error = [NSError errorWithDomain:RKRestKitErrorDomain code:RKObjectLoaderUnexpectedResponseError userInfo:nil];
if ([self.delegate respondsToSelector:#selector(objectLoaderDidLoadUnexpectedResponse:)]) {
[self.delegate objectLoaderDidLoadUnexpectedResponse: (RKObjectLoader*)self];
} else {
[self.delegate objectLoader: (RKObjectLoader*)self didFailWithError: _error];
}
// NOTE: We skip didFailLoadWithError: here so that we don't send the delegate
// conflicting messages around unexpected response and failure with error
[self finalizeLoad:NO error:_error];
return NO;
} else if (([self responseStatusCode] >= 400 && [self responseStatusCode] < 500) ||
([self responseStatusCode] >= 500 && [self responseStatusCode] < 600) ) {
// This is an error and we can map the MIME Type of the response
[self handleResponseError];
return NO;
}
return YES;
}
- (void)handleResponseError {
// Since we are mapping what we know to be an error response, we don't want to map the result back onto our
// target object
NSError* _error = nil;
RKObjectMappingResult* result = [self mapResponseWithMappingProvider:self.objectManager.mappingProvider toObject:nil error:&_error];
if (result) {
_error = [result asError];
} else {
RKLogError(#"Encountered an error while attempting to map server side errors from payload: %#", [_error localizedDescription]);
}
[self.delegate objectLoader: (RKObjectLoader*)self didFailWithError:_error];
[self finalizeLoad:NO error:_error];
}
#pragma mark - RKRequest & RKRequestDelegate methods
- (void) reportFailure {
[self.delegate objectLoader: (RKObjectLoader*)self didFailWithError:error];
[super reportFailure];
}
- (void)reportFinished {
NSAssert([NSThread isMainThread], #"RKObjectLoaderDelegate callbacks must occur on the main thread");
if ([self isResponseMappable]) {
// Determine if we are synchronous here or not.
if (isSynchronous) {
NSError* _error = nil;
_result = [[self performMapping:&_error] retain];
if (self.result) {
[self processMappingResult:self.result];
} else {
[self performSelectorInBackground:#selector(failWithError:) withObject:_error];
}
[super reportFinished];
} else {
[self performSelectorInBackground:#selector(performMappingOnBackgroundThread) withObject:nil];
}
}
}
I do the following in my unit test code to make sure my object mappings are working
NSDictionary *headers = [NSDictionary dictionaryWithObjectsAndKeys:#"application/json", #"X-RESTKIT-CACHED-MIME-TYPE",
#"200", #"X-RESTKIT-CACHED-RESPONSE-CODE",
#"application/json; charset=utf-8", #"Content-Type",
nil];
NSURL *url = [[NSURL alloc] initWithString:#""]; //need a url to create a dummy RKRequest
RKRequest *request = [RKRequest requestWithURL:url];
[url release];
//Create a dummy response with the data payload
RKResponse *response = [[[RKResponse alloc] initWithRequest:request
body:myData //myData is NSData loaded from my file on disk in this case
headers:headers] autorelease];
RKURL *rkURL = [[RKURL alloc] initWithString:#"https://api.twitter.com"];
RKManagedObjectLoader *loader = [[RKManagedObjectLoader alloc] initWithURL:rkURL
mappingProvider:self.objectManager.mappingProvider
objectStore:self.objectManager.objectStore];
loader.delegate = self;
loader.objectMapping = self.objectMapping; //I pass the object mapping to use here.
[loader didFinishLoad:response]; //Given a response and request, Restkit will parse the response and call the usual delegates
You might be able to do somthing similar as well to grab the response data from ASIHTTPRequest and pass it on to RestKit

UITableView not populating with SQLite

I want to create a to-do list with SQLite, and I have been following this tutorial: http://klanguedoc.hubpages.com/hub/IOS-5-How-To-Display-SQLite-Data-in-a-UITableView
but it's not working! The simulator runs, and the app opens, but the table is blank. Am I doing something wrong? I am using xcode 4.2 for snow leopard.
In the .sqlite file I have a string text, integer priority, and boolean complete. However, I've just implemented "text" to make things simpler.
Here's my code:
// Title.h
#import <Foundation/Foundation.h>
#interface Title : NSObject {
NSString *text;
}
#property(nonatomic,copy) NSString *text;
#end
//TitleVC.h
#import <UIKit/UIKit.h>
#import <sqlite3.h>
#interface TitleVC : UITableViewController{
NSMutableArray *thelist;
sqlite3 *db;
}
#property (nonatomic,retain) NSMutableArray *thelist;
-(NSMutableArray *) toDo;
#end
//TitleVC.m
#import "TitleVC.h"
#import "Title.h"
#import <sqlite3.h>
#implementation TitleVC
#synthesize thelist;
- (void)viewDidLoad
{
[self toDo];
[super viewDidLoad];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return [self.thelist count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"TitleCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
int rowCount = indexPath.row;
Title *title = [self.thelist objectAtIndex:rowCount];
cell.textLabel.text = title.text;
return cell;
}
-(NSMutableArray *) toDo{
thelist = [[NSMutableArray alloc] initWithCapacity:10];
#try{
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:#"todo.sqlite"];
BOOL success = [fileManager fileExistsAtPath:dbPath];
if(!success)
{
NSLog(#"Cannot locate database file '%#'.",dbPath);
}
if(!(sqlite3_open([dbPath UTF8String], &db) == SQLITE_OK))
{
NSLog(#"An error has occured: %#",sqlite3_errmsg(db));
}
const char *sql = "SELECT * FROM todo";
sqlite3_stmt *sqlStatement;
if(sqlite3_prepare(db, sql, -1, &sqlStatement, NULL) != SQLITE_OK)
{
NSLog(#"Problem with prepare statement: %#", sqlite3_errmsg(db));
}else{
Title *title = [[Title alloc] init];
while (sqlite3_step(sqlStatement)==SQLITE_ROW){
title.text = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement,1)];
[thelist addObject:title];
}
}
}
#catch (NSException *exception) {
NSLog(#"Problem with prepare statement: %#", sqlite3_errmsg(db));
}
#finally {
return thelist;
}
}
If you are using a standard UITableView, is tableView:numberOfRowsInSection: returning an appropriate value? What is tableView:cellForRowAtIndexPath: returning? I would put a break point in both locations and check to make that the methods are even being called.
Finally, if you are using a .xib file, is there a connection to the UITableView?

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