Getting null value after adding objects to customClass
- by Brian Stacks
Ok here's my code first viewController.h
@interface ViewController : UIViewController<UICollectionViewDataSource,UICollectionViewDelegate>
{
NSMutableArray *twitterObjects;
}
@property (strong, nonatomic) IBOutlet UICollectionView *myCollectionView;
Here is my viewController.m
//
// ViewController.m
// MDF2p2
//
// Created by Brian Stacks on 6/5/14.
// Copyright (c) 2014 Brian Stacks. All rights reserved.
//
#import "ViewController.h"
// add accounts framework to code
#import <Accounts/Accounts.h>
// add social frameworks
#import <Social/Social.h>
#import "TwitterCustomObject.h"
#import "CustomCell.h"
#import "DetailViewController.h"
@interface ViewController ()
@end
@implementation ViewController
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
//CustomCell * cell = (CustomCell*)sender;
//NSIndexPath *indexPath = [_myCollectionView indexPathForCell:cell];
// setting an id for view controller
DetailViewController *detailViewcontroller = segue.destinationViewController;
//TwitterCustomObject *newCustomClass = [twitterObjects objectAtIndex:indexPath.row];
if (detailViewcontroller != nil) {
// setting the custom customClass object
//detailViewcontroller.myNewCurrentClass = newCustomClass;
}
}
- (void)viewDidLoad
{
twitterObjects = [[NSMutableArray alloc]init];
[super viewDidLoad];
[self twitterAPIcall];
// Do any additional setup after loading the view, typically from a nib.
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return 100;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
//UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"myCell" forIndexPath:indexPath];
// initiate celli
CustomCell * cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"myCell" forIndexPath:indexPath];
// add objects to cell
if (cell != nil) {
//TwitterCustomObject *newCustomClass = [twitterObjects objectAtIndex:indexPath.row];
//[cell refreshCell:newCustomClass.userName userImage:newCustomClass.userImage];
[cell refreshCell:@"Brian" userImage:[UIImage imageNamed:@"love.jpg"]];
}
return cell;
}
-(void)twitterAPIcall
{
//create an instance of the account store from account frameworks
ACAccountStore *accountStore = [[ACAccountStore alloc]init];
// make sure we have a valid object
if (accountStore != nil)
{
// get the account type ex: Twitter, FAcebook info
ACAccountType *accountType = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];
// make sure we have a valid object
if (accountType != nil)
{
// give access to the account iformation
[accountStore requestAccessToAccountsWithType:accountType options:nil completion:^(BOOL granted, NSError *error)
{
if (granted)
{
//^^^success user gave access to account information
// get the info of accounts
NSArray *twitterAccounts = [accountStore accountsWithAccountType:accountType];
// make sure we have a valid object
if (twitterAccounts != nil)
{
//NSLog(@"Accounts: %@",twitterAccounts);
// get the current account information
ACAccount *currentAccount = [twitterAccounts objectAtIndex:0];
// make sure we have a valid object
if (currentAccount != nil)
{
//string from twitter api
NSString *requestString = @"https://api.twitter.com/1.1/friends/list.json";
// request the data from the request screen call
SLRequest *myRequest = [SLRequest requestForServiceType:SLServiceTypeTwitter requestMethod:SLRequestMethodGET URL:[NSURL URLWithString:requestString] parameters:nil];
// must authenticate request
[myRequest setAccount:currentAccount];
// perform the request named myRequest
[myRequest performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error)
{
// check to make sure there are no errors and we have a good http:request of 200
if ((error == nil) && ([urlResponse statusCode] == 200))
{
// make array of dictionaries from the twitter api data using NSJSONSerialization
NSArray *twitterFeed = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:nil];
NSMutableArray *nameArray = [twitterFeed valueForKeyPath:@"users"];
// for loop that loops through all the post
for (NSInteger i =0; i<[twitterFeed count]; i++)
{
NSString *nameString = [nameArray valueForKeyPath:@"name"];
NSString *imageString = [nameArray valueForKeyPath:@"profile_image_url"];
NSLog(@"Name feed: %@",nameString);
NSLog(@"Image feed: %@",imageString);
// get data into my mutable array
TwitterCustomObject *twitterInfo = [self createPostFromArray:[nameArray objectAtIndex:i]];
//NSLog(@"Image feed: %@",twitterInfo);
if (twitterInfo != nil)
{
[twitterObjects addObject:twitterInfo];
}
}
}
}];
}
}
}
else
{
// the user didn't give access
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Warning"
message:@"This app will only work with twitter accounts being allowed!."
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil, nil];
[alert performSelectorOnMainThread:@selector(show) withObject:nil waitUntilDone:FALSE];
}
}];
}
}
}
-(TwitterCustomObject*)createPostFromArray:(NSArray*)postArray
{
// create strings to catch the data in
NSArray *userArray = [postArray valueForKeyPath:@"users"];
NSString *myUserName = [userArray valueForKeyPath:@"name"];
NSString *twitImageURL = [userArray valueForKeyPath:@"profile_image_url"];
UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:twitImageURL]]];
// initiate object to put the data in
TwitterCustomObject *twitterData = [[TwitterCustomObject alloc]initWithPostInfo:myUserName myImage:image];
NSLog(@"Name: %@",myUserName);
return twitterData;
}
-(IBAction)done:(UIStoryboardSegue*)segue
{
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
Here is my customObject class
TwitterCustomClass.h
//
// TwitterCustomObject.h
// MDF2p2
//
// Created by Brian Stacks on 6/5/14.
// Copyright (c) 2014 Brian Stacks. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface TwitterCustomObject : NSObject
{
}
@property (nonatomic, readonly) NSString *userName;
@property (nonatomic, readonly) UIImage *userImage;
-(id)initWithPostInfo:(NSString*)screenName myImage:(UIImage*)myImage;
@end
TwitterCustomClass.m
//
// TwitterCustomObject.m
// MDF2p2
//
// Created by Brian Stacks on 6/5/14.
// Copyright (c) 2014 Brian Stacks. All rights reserved.
//
#import "TwitterCustomObject.h"
@implementation TwitterCustomObject
-(id)initWithPostInfo:(NSString*)screenName myImage:(UIImage*)myImage
{
// initialize as object
if (self = [super init])
{
// use the data to be passed back and forth to the tableview
_userName = [screenName copy];
_userImage = [myImage copy];
}
return self;
}
@end
The problem is I get the values in the method twitterAPIcall, I can get the names and image values or strings from the values. But in the (TwitterCustomObject*)createPostFromArray:(NSArray*)postArray method all values are coming up as null.I thought it got added with this line of code in the twitterAPIcall method [twitterObjects addObject:twitterInfo];?
