Passing JSON data on uiviewTable ios (objective c) - ios

Question

There are similar questions but i could not find any solution which fits for me.
I have got all the data from the link as JSON but i am unable to understand that how can i show that data on uitableview. It is to be shown on homepage. it has title, info. for now i only need title and info to be shown on homepage.
NSURL *url = [NSURL URLWithString:#"http://mantis.vu.edu.pk/fundme/public/api/v1/ideas"];
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
AFJSONRequestOperation *jsonOperation = [AFJSONRequestOperation JSONRequestOperationWithRequest:urlRequest success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON)
{
NSDictionary *responseDict = (NSDictionary *)JSON;
ideasArrayList = [[NSMutableArray alloc] init];
for (NSDictionary *innerObject in [responseDict objectForKey:#"data"])
{
[ideasArrayList addObject:innerObject];
if (ideasArrayList.count > 0) {
NSDictionary *userObject = [ideasArrayList objectAtIndex:0];
NSLog(#"Object and first index of array is %#",userObject);
}
failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON)
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Oops something went wrong."
message:[error localizedDescription]
delegate:nil
cancelButtonTitle:#"Ok"
otherButtonTitles:nil];
[alertView show];
}];
[jsonOperation start];
i am using AFNetworking library.

Answer 1

if you call your code in ViewController, at first you need add a dispatch_async block for move your data to main thread and reload tableview
-(void)getDataFromApi {
NSURL *url = [NSURL URLWithString:#"http://mantis.vu.edu.pk/fundme/public/api/v1/ideas"];
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
AFJSONRequestOperation *jsonOperation = [AFJSONRequestOperation JSONRequestOperationWithRequest:urlRequest success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON)
{
NSDictionary *responseDict = (NSDictionary *)JSON;
ideasArrayList = [[NSMutableArray alloc] init];
for (NSDictionary *innerObject in [responseDict objectForKey:#"data"])
{
[ideasArrayList addObject:innerObject];
if (ideasArrayList.count > 0) {
NSDictionary *userObject = [ideasArrayList objectAtIndex:0];
NSLog(#"Object and first index of array is %#",userObject);
dispatch_async(dispatch_get_main_queue(), ^{
self.ideasArrayList = ideasArrayList;
[self.tableView reloadData];
});
}
failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON)
{
dispatch_async(dispatch_get_main_queue(), ^{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Oops something went wrong."
message:[error localizedDescription] delegate:nil cancelButtonTitle:#"Ok" otherButtonTitles:nil];
[alertView show];
});
}];
[jsonOperation start];
}
In viewDidLoad method
- (void)viewDidLoad{
self.tableView.dataSource = self;
}
And implement UITableViewDatasource protocol methods
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.ideasArrayList.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
//configure the cell here or create custom subclass
}
NSDictionary *innerObject = self.ideasArrayList[indexPath.row];
cell.textLabel.text = innerObject[#"title"];
return cell;
}

Answer 2

You need to store the values you need to display in tableview in an array. So retrieve those values from your output JSON and store them in an array. Then in the data source methods of table view follow the usual.For e.g.- In the numberOfRowsInSection return yourArray.count. I hope you get the point.
I hope you get the point. Store values in array and then make the table fetch from that array.

Answer 3

I think it's help for you.
First you want to add the .m file.
#import "ViewController.h"
#import "tblcellTableViewCell.h"
#interface ViewController ()<UITableViewDelegate,UITableViewDataSource>
{
NSMutableArray *arrJSONDATA;
}
#property (weak, nonatomic) IBOutlet UITableView *tbl;
#end
and add the below code the viewDidLoad.
arrJSONDATA = [[NSMutableArray alloc] init];
NSURL *url = [NSURL URLWithString:#"http://mantis.vu.edu.pk/fundme/public/api/v1/ideas"];
NSData *data = [NSData dataWithContentsOfURL:url];
NSError *err;
NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&err];
NSDictionary *dicData = [dic valueForKey:#"data"];
for (NSDictionary *dic1 in dicData) {
NSMutableArray *arr = [[NSMutableArray alloc] init];
[arr addObject:[dic1 objectForKey:#"idea_title"]];
[arr addObject:[dic1 objectForKey:#"idea_info"]];
[arrJSONDATA addObject:arr];
}
NSLog(#"%#",[arrJSONDATA description]);
[_tbl reloadData];
Label Outlet Create for title and info.
#import <UIKit/UIKit.h>
#interface tblcellTableViewCell : UITableViewCell
#property (weak, nonatomic) IBOutlet UILabel *lblTitle;
#property (weak, nonatomic) IBOutlet UILabel *lblInfo;
#end
Then Create the tableView Delegate Method.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [arrJSONDATA count];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
tblcellTableViewCell *cells = [tableView dequeueReusableCellWithIdentifier:#"cell" forIndexPath:indexPath];
NSMutableArray *arr = [[NSMutableArray alloc] init];
arr = [arrJSONDATA objectAtIndex:indexPath.section];
cells.lblTitle.text = [arr objectAtIndex:0];
cells.lblInfo.text = [arr objectAtIndex:1];
return cells;
}
[Check the Screenshot.]