load local json information in UITableView - objective-c

Question

I have my own json file "list.json" for a list of sample informations like below. My json file is
located inside of Xcode, I want to show my information to the table, would you please give me some hints and help for this implementation, how can I parse local json and load information in table.
[
{
"number": "1",
"name": "jon"
},
{
"number": "2",
"name": "Anton"
},
{
"number": "9",
"name": "Lili"
},
{
"number": "7",
"name": "Kyle"
},
{
"display_number": "8",
"name": "Linda"
}
]

Answer 1

you can create a custom class which inherits from UITableViewController.
The code to read the contents of list.json file into an array is:
NSString * filePath =[[NSBundle mainBundle] pathForResource:#"list" ofType:#"json"];
NSError * error;
NSString* fileContents =[NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:&error];
if(error)
{
NSLog(#"Error reading file: %#",error.localizedDescription);
}
self.dataList = (NSArray *)[NSJSONSerialization
JSONObjectWithData:[fileContents dataUsingEncoding:NSUTF8StringEncoding]
options:0 error:NULL];
And the header file is:
#import <UIKit/UIKit.h>
#interface TVNA_ReadingDataTVCViewController : UITableViewController
#end
The implementation is:
#import "TVNA_ReadingDataTVCViewController.h"
#interface TVNA_ReadingDataTVCViewController ()
#property NSArray* dataList;
#end
#implementation TVNA_ReadingDataTVCViewController
- (void)viewDidLoad
{
[super viewDidLoad];
[self readDataFromFile];
[self.tableView reloadData];
}
-(void)readDataFromFile
{
NSString * filePath =[[NSBundle mainBundle] pathForResource:#"list" ofType:#"json"];
NSError * error;
NSString* fileContents =[NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:&error];
if(error)
{
NSLog(#"Error reading file: %#",error.localizedDescription);
}
self.dataList = (NSArray *)[NSJSONSerialization
JSONObjectWithData:[fileContents dataUsingEncoding:NSUTF8StringEncoding]
options:0 error:NULL];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return self.dataList.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
id keyValuePair =self.dataList[indexPath.row];
cell.textLabel.text = keyValuePair[#"name"];
cell.detailTextLabel.text=[NSString stringWithFormat:#"ID: %#", keyValuePair[#"number"]];
return cell;
}
#end
Finally, on your story board, assign this class as the custom class of your Table View Controller. Hope this helps.