/*
#protocol ClasConfig
#end
*/
//class A
#interface ClassA : NSObject
#property (nonatomic) *companyA;
#property (nonatomic) NSArray *companyLists;
- (NSMutableArray*)getCompanyLists:(CompanyListModel *)productionListModel;
#end
//class config
#interface ClasConfig : NSObject
#property (nonatomic) NSString *Number;
#property (nonatomic) NSString *totalNumberOfCompany;
#end
#implementation ClassA
- (NSMutableArray*)getCompanyLists:(CompanyListModel *)productionListModel
{
ClasConfig *config = [[ClasConfig alloc] init]; **//Gives me linker error**
}
#end
ClasConfig *config = [[ClasConfig alloc] init]; //Gives me linker error
Though I have tried with importing protocol for reference.
For got to implement class of ClassConfig.
#implementation ClassConfig
#end
#implementation ClassA
- (NSMutableArray*)getCompanyLists:(CompanyListModel *)productionListModel
{
ClasConfig *config = [[ClasConfig alloc] init]; **//Gives me linker error**
}
#end
Related
When I look around the Cocoa Touch API, I can find some classes declared along with categories in the same header file, e.g.
#interface NSArray : NSObject <NSCopying, NSMutableCopying, NSSecureCoding, NSFastEnumeration>
#property (readonly) NSUInteger count;
// and some other properties
#end
#interface NSArray (NSExtendedArray)
#property (readonly, copy) NSString *description;
// and some other properties
#end
Now I am trying to do the same thing with my class, like as follow:
#interface ARCTextbook : NSObject
#property (nonatomic) NSInteger ID;
#property (nonatomic) NSString *name;
#end
#interface ARCTextbook (Student)
#property (nonatomic) NSInteger studentID;
#property (nonatomic, getter=isUsed) BOOL used; // Used by a student?
#end
However, when I tried to access studentID or used property, I got an unrecognized selector error. Am I missing anything?
Cheers.
This is Associated Objects, you can refer documentation in below:
http://www.davidhamrick.com/2012/02/12/Adding-Properties-to-an-Objective-C-Category.html
How to store not id type variable use a objc_getAssociatedObject/objc_setAssociatedObject?
ARCTextbook.h
#import <Foundation/Foundation.h>
#interface ARCTextbook : NSObject
#property (nonatomic) NSInteger ID;
#property (nonatomic) NSString *name;
#end
#interface ARCTextbook (Student)
#property (nonatomic) NSInteger studentID;
#property (nonatomic, getter=isUsed) BOOL used; // Used by a student?
#end
ARCTextbook.m
#import "ARCTextbook.h"
#import <objc/runtime.h>
#implementation ARCTextbook
#end
static NSString *kStudentID = #"kStudentID";
static NSString *kUsed = #"kUsed";
#implementation ARCTextbook (Student)
#dynamic studentID;
#dynamic used;
- (void)setStudentID:(NSInteger)aStudentID {
objc_setAssociatedObject(self, (__bridge const void *)(kStudentID), #(aStudentID), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
- (NSInteger)studentID {
return [objc_getAssociatedObject(self, (__bridge const void *)(kStudentID)) integerValue];
}
- (void)setUsed:(BOOL)aUsed {
objc_setAssociatedObject(self, (__bridge const void *)(kUsed), #(aUsed), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
- (BOOL)isUsed {
return [objc_getAssociatedObject(self, (__bridge const void *)(kUsed)) boolValue];
}
#end
ViewController.m
#import "ViewController.h"
#import "ARCTextbook.h"
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
ARCTextbook *t = [[ARCTextbook alloc] init];
t.studentID = 2;
t.used = YES;
}
#end
I've subclassed the PFObject with the following Class (dynamic properties, and +load & parseClassName Methods in .m file)
#interface DAOpponents : PFObject <PFSubclassing>
#property (nonatomic, strong) PFObject* fromUser;
#property (nonatomic, strong) PFObject* toUser;
#property (nonatomic) BOOL isVisible;
#property (nonatomic) BOOL isPersistent;
+ (NSString *)parseClassName;
#end
In a Unit Test I try to create a Sample DAOpponents-Object:
DAOpponents* follow = [DAOpponents object];
follow.fromUser = user1; // caught "NSInvalidArgumentException", "PFObject values may not have class: PFUser"
follow.toUser = user2;
[follow save];
If I do the same without a subclassed Version of the opponents there's no Exception
PFObject* follow = [[PFObject alloc] initWithClassName:#"DAOpponents"];
[follow setObject:user1 forKey:#"fromUser"]; // no exception!!!
[follow setObject:user1 forKey:#"toUser"];
Why does a subclassed PFObject can not point to a PFUser object?
Any help appreciated! Thanks a lot!
I was able to get around this problem by first subclassing PFUser, then using my subclass called User in my other PFObject subclasses.
My PFUser subclass, User.h:
#import <Parse/Parse.h>
#class Person;
#class Parish;
#interface User : PFUser<PFSubclassing>
//+ (NSString *)parseClassName;
// Return the current user
+ (User *)currentUser;
#property (retain) NSNumber *acceptedAgreements;
#property (retain) NSNumber *isAdmin;
#property (retain) Person *person;
#end
and my User.m:
#import "User.h"
#import <Parse/PFObject+Subclass.h>
#import "Person.h"
#implementation User
#dynamic acceptedAgreements;
#dynamic isAdmin;
#dynamic person;
//+ (NSString *)parseClassName {
// return #"User";
//}
// Return the current user
+ (User *)currentUser {
return (User *)[PFUser currentUser];
}
#end
I am attempting to use this JSONModel library in an app I'm building. I've been following this article, but for some reason I keep getting (null) when attempting to parse the json string. I was told that it is because I'm not creating a json instance; but it seems to me I am. Below is the code, can anyone see what I'm missing? I'm attempting to use this web service, with these inputs:
emailAddress: wufpakjack#yahoo.com;
password: test;
companyId: 2579;
scheduleDate: 20140415.
myShiftModel.h
#import "JSONModel.h"
#interface myShiftModel : JSONModel
#property (assign, nonatomic) NSString *shiftName;
#property (assign, nonatomic) NSString *shiftStartTime;
#property (assign, nonatomic) NSString *shiftPosition;
#end
dailyViewModel.h
#import "JSONModel.h"
#import "myShiftModel.h"
#protocol dailyViewModel #end
#interface dailyViewModel : JSONModel
#property (assign, nonatomic) int numAvailableXChanges;
#property (strong, nonatomic) NSString *todaysForecast;
#property (assign, nonatomic) int todaysTemperature;
#property (strong, nonatomic) myShiftModel *workShift;
#end
dailyFeed.h
#import "JSONModel.h"
#import "dailyViewModel.h"
#interface dailyFeed : JSONModel
#property (strong, nonatomic) NSArray <dailyViewModel> *workShifts;
#end
mainViewController.m
#import "mainViewController.h"
#import "JSONModelLib.h"
#import "JSONModel+networking.h"
#import "dailyFeed.h"
#interface mainViewController () {
dailyFeed *feed;
}
#end
#implementation mainViewController
- (void)viewDidAppear:(BOOL)animated {
NSString *email = [[NSString alloc]initWithFormat:#"wufpakjack#yahoo.com"];
NSString *pass = [[NSString alloc]initWithFormat:#"test"];
NSString *compID = [[NSString alloc]initWithFormat:#"2579"];
NSString *date = [[NSString alloc]initWithFormat:#"20140415"];
NSString *urlString = [NSString stringWithFormat:#"http://qa.shiftzen.com/ws/schedutils.asmx/GetDailyView?emailAddress=%#&password=%#&companyId=%#&scheduleDate=%#", email,pass,compID,date];
NSLog(#"%#", urlString);
[JSONHTTPClient getJSONFromURLWithString:urlString
completion:^(NSDictionary *json, JSONModelError *err) {
NSError* error = nil;
feed = [[dailyFeed alloc] initWithDictionary:json error:&error];
NSLog(#"shifts: %#", feed.workShifts);
}];
}
#end
Any guidance would be greatly appreciated.
Warmest regards,
DB
I have a singleton object in iOS that when instantiated parses a CSV file and then holds the results. I would like to make this object universally accessible and I would like it to not be released from memory until the app quits. I am running ARC so I cannot do manual retains.
Is there a way I can do this so it will work with ARC?
Header File:
#import <Foundation/Foundation.h>
#import "CHCSV.h"
#import "RCParserObject.h"
#interface ParserStore : NSObject <CHCSVParserDelegate>
{
// CSV Variables
RCParserObject *item;
NSMutableArray *data;
NSMutableArray *parsedData;
int fields;
bool open;
}
#property (atomic, retain) RCParserObject *item;
#property (atomic, retain) NSMutableArray *data;
#property (atomic, retain) NSMutableArray *parsedData;
#property (atomic) int fields;
#property (atomic) bool open;
+ (ParserStore *) defaultStore;
- (void) parseCSVFile:(NSString*)file;
- (void) categorizeData;
Implementation File
#import "ParserStore.h"
#import "RCParserObject.h"
#import "RCDetailItem.h"
static ParserStore *defaultStore;
#implementation ParserStore
#synthesize item, data, parsedData, fields, open;
# pragma mark -
# pragma mark Singleton Methods
+ (ParserStore *) defaultStore
{
if (!defaultStore)
{
defaultStore = [[super allocWithZone:NULL] init];
}
return defaultStore;
}
+ (id) allocWithZone:(NSZone *)zone
{
return [self defaultStore];
}
- (id) init
{
NSLog(#"Running init on parser store");
if (defaultStore)
{
NSLog(#"Self data count is %d, right before return", self.parsedData.count);
return defaultStore;
}
// NSLog(#"This better only happen once");
self = [super init];
[self setParsedData:[[NSMutableArray alloc] init]];
[self parseCSVFile:#"ContentNoPathFileExt2ASCII"];
[self categorizeData];
// NSLog(#"Self data count is %d when first created", self.parsedData.count);
return self;
}
#property (atomic, retain) RCParserObject *item;
#property (atomic, retain) NSMutableArray *data;
#property (atomic, retain) NSMutableArray *parsedData;
#property (atomic) int fields;
#property (atomic) bool open;
+ (ParserStore *) defaultStore;
- (void) parseCSVFile:(NSString*)file;
- (void) categorizeData;
#end
+(MySingleton *)singleton {
static dispatch_once_t pred;
static MySingleton *shared = nil;
dispatch_once(&pred, ^{
shared = [[MySingleton alloc] init];
shared.someVar = someValue; // if you want to initialize an ivar
});
return shared;
}
From anywhere:
NSLog(#"%#",[MySingleton singleton].someVar);
Note that your iOS app already has a singleton that you can access anywhere:
AppDelegate *delegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];
a simple singleton would be something like... in the .h:
#interface Foo : NSObject
+ (Foo *)sharedInstance;
#end
and in the .m:
static Foo *_foo = nil;
#implementation Foo
+ (Foo *)sharedInstance {
if (!_foo)
_foo = [[Foo alloc] init];
return _foo;
}
#end
I have gone through a few tutorials including the sample app included
with Three20 and cannot figure out why photos aren't showing up in my
TTPhotoViewController. I actually find it pretty hard to debug.
Below is the code I have. Any thoughts on why images will not load
and how to debug it would be great. I get a completely black view in
between my bottom tabbar and upper nav bar. I also see left and right
arrows overlayed on the black view which seems to be for navigating
photos although I thought it was supposed to display a thumbnail
gallery.
// A TTPhoto class
// Photo.h
#import <Foundation/Foundation.h>
#import <Three20/Three20.h>
#interface Photo : NSObject <TTPhoto> {
NSString *_caption;
NSString *_urlLarge;
NSString *_urlSmall;
NSString *_urlThumb;
id <TTPhotoSource> _photoSource;
CGSize _size;
NSInteger _index;
}
#property (nonatomic, copy) NSString *caption;
#property (nonatomic, copy) NSString *urlLarge;
#property (nonatomic, copy) NSString *urlSmall;
#property (nonatomic, copy) NSString *urlThumb;
#property (nonatomic, assign) id <TTPhotoSource> photoSource;
#property (nonatomic) CGSize size;
#property (nonatomic) NSInteger index;
- (id)initWithCaption:(NSString *)caption urlLarge:(NSString
*)urlLarge urlSmall:(NSString *)urlSmall urlThumb:(NSString *)urlThumb
size:(CGSize)size;
#end
// Photo.m
#import "Photo.h"
#implementation Photo
#synthesize caption = _caption;
#synthesize urlLarge = _urlLarge;
#synthesize urlSmall = _urlSmall;
#synthesize urlThumb = _urlThumb;
#synthesize photoSource = _photoSource;
#synthesize size = _size;
#synthesize index = _index;
- (id)initWithCaption:(NSString *)caption urlLarge:(NSString
*)urlLarge urlSmall:(NSString *)urlSmall urlThumb:(NSString *)urlThumb
size:(CGSize)size {
if ((self = [super init])) {
self.caption = caption;
self.urlLarge = urlLarge;
self.urlSmall = urlSmall;
self.urlThumb = urlThumb;
self.size = size;
self.index = NSIntegerMax;
self.photoSource = nil;
}
return self;
}
- (void) dealloc {
self.caption = nil;
self.urlLarge = nil;
self.urlSmall = nil;
self.urlThumb = nil;
[super dealloc];
}
#pragma mark TTPhoto
- (NSString*)URLForVersion:(TTPhotoVersion)version {
switch (version) {
case TTPhotoVersionLarge:
return _urlLarge;
case TTPhotoVersionMedium:
return _urlLarge;
case TTPhotoVersionSmall:
return _urlSmall;
case TTPhotoVersionThumbnail:
return _urlThumb;
default:
return nil;
}
}
#end
// A TTPhotoSource class
// PhotoSet.h
#import <Foundation/Foundation.h>
#import "Three20/Three20.h"
#interface PhotoSet : TTURLRequestModel <TTPhotoSource> {
NSString *_title;
NSArray *_photos;
NSArray* _tempPhotos;
NSTimer* _fakeLoadTimer;
}
#property (nonatomic, copy) NSString *title;
#property (nonatomic, retain) NSArray *photos;
- (id) init;
#end
// PhotoSet.m
#import "PhotoSet.h"
#import "Photo.h"
#implementation PhotoSet
#synthesize title = _title;
#synthesize photos = _photos;
- (id) init {
_title = #"Test photo album";
_photos = [[NSArray alloc] initWithObjects:
[[[Photo alloc] initWithCaption:#"coming soon"
urlLarge:#"http://farm5.static.flickr.com/
4066/4653156849_0905e6b58e_o.jpg"
urlSmall:#"http://farm5.static.flickr.com/
4066/4653156849_0d15f0e3f0_s.jpg"
urlThumb:#"http://farm5.static.flickr.com/
4066/4653156849_0d15f0e3f0_s.jpg"
size:CGSizeMake(220, 112)] autorelease],
[[[Photo alloc] initWithCaption:#"coming soon 2"
urlLarge:#"http://farm5.static.flickr.com/
4023/4653774402_05e6acd995_o.jpg"
urlSmall:#"http://farm5.static.flickr.com/
4009/4653157237_c2f5f59e0d_s.jpg"
urlThumb:#"http://farm5.static.flickr.com/
4009/4653157237_c2f5f59e0d_s.jpg"
size:CGSizeMake(220, 112)] autorelease],
[[[Photo alloc] initWithCaption:#"coming soon 2"
urlLarge:#"http://farm5.static.flickr.com/
4023/4653774402_05e6acd995_o.jpg"
urlSmall:#"http://farm5.static.flickr.com/
4009/4653157237_c2f5f59e0d_s.jpg"
urlThumb:#"http://farm5.static.flickr.com/
4009/4653157237_c2f5f59e0d_s.jpg"
size:CGSizeMake(220, 112)] autorelease],
[[[Photo alloc] initWithCaption:#"coming soon 2"
urlLarge:#"http://farm5.static.flickr.com/
4023/4653774402_05e6acd995_o.jpg"
urlSmall:#"http://farm5.static.flickr.com/
4009/4653157237_c2f5f59e0d_s.jpg"
urlThumb:#"http://farm5.static.flickr.com/
4009/4653157237_c2f5f59e0d_s.jpg"
size:CGSizeMake(220, 112)] autorelease],
nil];
for (int i = 0; i < _photos.count; ++i) {
id<TTPhoto> photo = [_photos objectAtIndex:i];
if ((NSNull*)photo != [NSNull null]) {
NSLog(#"in here 65434");
photo.photoSource = self;
photo.index = i;
}
}
return self;
}
- (void) dealloc {
self.title = nil;
self.photos = nil;
[super dealloc];
}
#pragma mark TTModel
- (BOOL)isLoading {
return NO;
}
- (BOOL)isLoaded {
return YES;
}
#pragma mark TTPhotoSource
- (NSInteger)numberOfPhotos {
return _photos.count;
}
- (NSInteger)maxPhotoIndex {
return _photos.count-1;
}
- (id<TTPhoto>)photoAtIndex:(NSInteger)photoIndex {
if (photoIndex < _photos.count) {
return [_photos objectAtIndex:photoIndex];
} else {
return nil;
}
}
#end
// A TTPhotoViewController
// EventDetailViewController.h
#import <UIKit/UIKit.h>
#import <Foundation/Foundation.h>
#import <Three20/Three20.h>
#import "PhotoSet.h"
#class Event;
#interface EventDetailViewController :
TTPhotoViewController<UINavigationControllerDelegate,
UIImagePickerControllerDelegate> {
NSArray *photos;
Event *event;
PhotoSet *_photoSet;
}
#property (nonatomic, retain) NSArray *photos;
#property (nonatomic, retain) Event *event;
#property (nonatomic, retain) PhotoSet *photoSet;
- (id)initWithEvent:(Event *)e;
// EventDetailViewController.m
#import "EventDetailViewController.h"
#import "Event.h"
#import "PhotoSet.h"
#import "Photo.h"
#implementation EventDetailViewController
#synthesize photos;
#synthesize event;
#synthesize photoSet = _photoSet;
#pragma mark -
#pragma mark Initialization
- (void)viewDidLoad {
self.photoSet = [[PhotoSet alloc] init];
self.photoSource = self.photoSet;
}
- (id)initWithEvent:(Event *)e {
if (self) {
self.event = e;
}
return self;
}
#end
You may find an answer here: http://www.raywenderlich.com/1430/how-to-use-the-three20-photo-viewer