Populating my tableview with parsed json in a string - ios

Question

Very new to iOS, a bit lost on what to do. I actually HAVE all that I need, I just need help putting said information into my tableview now. I am debugging and everything is correct when I hover over the variables in my "init" function, but when I go down to the function that handles the cells something is just not clicking. Very frustrating having the information you need but don't know how to put it where you want.
I hate coming to SO for these kind of questions but I have exhausted all other options. Before posting on here, I have tried everything. I tried to google other projects that I can reference, did not find any that was iOS 7 or relevant to my project. I apologize for this elementary question, and thank you in advance.
MasterViewController.m
#interface MasterViewController () {
__block NSString * jsonString;
}
#end
#implementation MasterViewController
#synthesize coursesController = _coursesController;
-(void)getJSONString
{
jsonString = [JSONHelper JSONgetString:#"http://iam.colum.edu/portfolio/api/course?json=True"];
}
-(void)initCourses
{
[_coursesController.masterCoursesList
removeLastObject];
NSError *coursesError = nil;
NSArray *coursesNameList =
[NSJSONSerialization JSONObjectWithData:[jsonString dataUsingEncoding:NSUTF8StringEncoding]
options:NSJSONReadingMutableContainers
error: &
coursesError];
if(coursesError)
NSLog(#"[%# %#] JSON error: %#", NSStringFromClass([self class]),
NSStringFromSelector(_cmd), coursesError.localizedDescription);
NSArray *coursesNames = [coursesNameList objectAtIndex:0];
for (NSString *courseName in coursesNameList) {
NSString *stringToUse = [courseName substringFromIndex:8];
//initialize variables
NSString *name = courseName;
NSInteger *courseid = 00;
NSString *imageUrl = nil;
//add current building to list
[_coursesController masterCoursesListWithName:name AndcourseID:courseid AndimageURL:imageUrl];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"CoursesCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
Courses *courseAtIndex = [self.coursesController objectInListAtIndex:indexPath.row];
[[cell textLabel] setText:courseAtIndex.courseName];
return cell;
}
CoursesDataController.m
#interface CoursesDataController()
-(void)initializeDefaultDataList;
#end
#implementation CoursesDataController
#synthesize masterCoursesList = _masterCoursesList;
-(void)initializeDefaultDataList
{
NSMutableArray *coursesList = [[NSMutableArray alloc] init];
Courses *course = [[Courses
alloc]initWithName:#"Loading Now..." AndcourseID:00];
[coursesList addObject:course];
}
-(void)setMasterCoursesList:(NSMutableArray *)newCourseList
{
if(_masterCoursesList != newCourseList)
{
_masterCoursesList = [newCourseList mutableCopy];
}
} //this function is created when you create a NSMutableArray MasterCoursesList
-(id)init
{
if (self = [super init])
{
[self initializeDefaultDataList];
return self;
}
return nil;
}
-(NSUInteger) countOfList
{
return [self.masterCoursesList count];
}
-(Courses *)objectInListAtIndex:(NSInteger)theIndex
{
return [self.masterCoursesList objectAtIndex:theIndex];
}
-(void)masterCoursesListWithName:(NSString *)cName
AndcourseID:(NSInteger *)cID
AndimageURL:(NSString *)cURL
{
Courses *courses;
courses = [[Courses alloc] initWithName:cName
AndcourseID:cID
AndimageURL:cURL];
[self.masterCoursesList addObject:courses];
}
-(void)courseName:(NSString *)cName
AndcourseID:(NSInteger *)cID
{
Courses *courses;
courses = [[Courses alloc] initWithName:cName AndcourseID:cID];
[self.masterCoursesList addObject:courses];
}
#end
CoursesDataController.h
#import <Foundation/Foundation.h>
#class Courses;
#interface CoursesDataController : NSObject
#property(nonatomic, copy) NSMutableArray *
masterCoursesList;
-(NSUInteger) countOfList;
-(Courses *)objectInListAtIndex:(NSInteger)theIndex;
- (void)masterCoursesListWithName:(NSString *)cName
AndcourseID:(NSInteger *)cID
AndimageURL:(NSString *)cURL;
- (void)courseName:(NSString *)cName
AndcourseID:(NSInteger *)cID;
#end
JSONHelper.m
+(NSString *)JSONgetString:(NSString *)query
{
NSString* searchURL = [NSString stringWithFormat:query];
NSError* error = nil; //error for NSUSRLConnection
NSURLResponse* response = nil;
NSMutableURLRequest* request = [[NSMutableURLRequest alloc] init];
NSURL* URL = [NSURL URLWithString:searchURL];
[request setURL:URL];
[request setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
[request setTimeoutInterval:30];
NSData* data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
if (error)
{
NSLog(#"Error performing request %#", searchURL);
return 0;
}
NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"jsonString:%#", jsonString);
return jsonString;
}
I have a lot of code posted, however there are only a few lines that really matter for my question. When I hover over "name" in the following line of code [_coursesController masterCoursesListWithName:name AndcourseID:courseid AndimageURL:imageUrl];
I get what I need (it loops through each JSON array and displays each one). But in the function that handles my cells, when I hover over courseName it doesn't say anything.
Courses *courseAtIndex = [self.coursesController objectInListAtIndex:indexPath.row];
[[cell textLabel] setText:courseAtIndex.courseName];
EDITS:
numberOfRowsInSection function in MasterViewController.m
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.coursesController countOfList];
}

Answer 1

Try this,
in CoursesDataController.m
-(void)initializeDefaultDataList
{
self.masterCoursesList = [[NSMutableArray alloc] init];
Courses *course = [[Courses
alloc]initWithName:#"Loading Now..." AndcourseID:00];
[self.masterCoursesList addObject:course];
}