Json parsar
Here json Example using the NXJson parser..
There are Two Method To Do This ..... It Is Given Below : Method ( 1 ) :--: First Call Method In Viewdidload and Write This Code In Method :-
NSHTTPURLResponse *responce = nil;
NSString *urlstring = [NSString stringWithFormat:@"http://phobos.apple.com/WebObjects/MZStoreServices.woa/ws/RSS/toppaidapplications/limit=20/json"];
NSURL *urldata = [NSURL URLWithString:[urlstring stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSURLRequest *urlrequest = [[NSURLRequest alloc]initWithURL:urldata];
NSData *mydata = [NSURLConnection sendSynchronousRequest:urlrequest returningResponse:&responce error:nil];
NSMutableDictionary *maindic = [NSJSONSerialization JSONObjectWithData:mydata options:NSJSONReadingMutableContainers error:nil];
Then Write Coding To Fetch Your Data Depend Your Need .... Example Is Given Below
NSMutableDictionary *feeddic = [maindic objectForKey:@"feed"];
NSMutableArray *mainarr = [feeddic objectForKey:@"entry"];
for (int i = 0; i < mainarr.count; i++)
{
Container *data = [[Container alloc] init];
NSMutableDictionary *subdic = [mainarr objectAtIndex:i];
NSMutableDictionary *secnamedic = [subdic objectForKey:@"im:name"];
NSString *stringsecname = [secnamedic objectForKey:@"label"];
data.strsecname = stringsecname;
NSMutableArray *imgarr = [subdic objectForKey:@"im:image"];
for (int j = 0; j < imgarr.count; j++)
{
NSMutableDictionary *secsubdic = [imgarr objectAtIndex:0];
NSString *stringimg = [secsubdic objectForKey:@"label"];
data.strimg=stringimg;
}
[arrobj addObject:data];
}
[tblobj reloadData];
Method ( 2) :-
1. First put the json folder in your new project Or Exiting project ...(that given below) in this Folder include the AsiHttp,json,singlton,Staticclass,Singleton folder .
Click here for Download Jason file :- A this file must import in your bundel..... 
2. json folder contain all the non ARC file so set the flag (-fno-objc-arc ) in compile sources.
(go to Build Phases --> compile sources ---> set flag to -fno-objc-arc)
3. add following framework in your project
1 - security.framework
2 - systemConfiguratin.framework
3 - libz.dylib
4 - MobileCoreServices.framework
5 - CFNetwork.framework
6 - libxml2.dylib
4. inser new path in header searchpath.
(go Build Setting -> Search path-->Header Search Paths) /usr/include/libxml2
and finally build your project..(cmd +b). (if error occur than see and check again all step).
NOTE :- if you get some syntax error then double click on them and fix -it .
so no error occur than ...
Then start you project to working json file..
First of all Import These Three files.
#import "Singleton.h"#import "HttpQueue.h"#import "NXJsonParser.h"Then After In ViewDidLoad method register a notification.-(void)viewDidLoad{ [super viewDidLoad];
[[NSNotificationCenter defaultCenter] removeObserver:self name:@"1" object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(getAllAPIDataCompletion:) name:@"1" object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:@"-1" object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(getAllAPIDataFail:) name:@"-1" object:nil];
}send request using httpQueue class and get response to given Method.
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
NSString *myreqstr=[NSString stringWithFormat:@"http://phobos.apple.com/WebObjects/MZStoreServices.woa/ws/RSS/toppaidapplications/limit=10/json"]; // using The Raywendrlich json api for demo
[[HttpQueue sharedSingleton] getItems:myreqstr :1];
}
When request is successful get all data This method.
-(void ) getAllAPIDataCompletion : (NSNotification *)notification {
NSDictionary *dict = [notification userInfo];
ASIHTTPRequest *res = [dict objectForKey:@"index"];
NXJsonParser * parser = [[NXJsonParser alloc] initWithData:[res responseData]];
id result = [parser parse:nil ignoreNulls:NO];
NSDictionary *maindic = (NSDictionary *)result;
NSDictionary *feeddic = [maindic objectForKey:@"feed"];
NSArray *entryarr = [feeddic objectForKey:@"entry"];
for (int i=0; i<entryarr.count; i++)
{
Container *contain = [[Container alloc] init];
NSDictionary *subdic = [entryarr objectAtIndex:i];
NSDictionary *namedic = [subdic objectForKey:@"im:name"];
NSString *strname = [namedic objectForKey:@"label"];
contain.strname = strname;
NSArray *imgarr = [subdic objectForKey:@"im:image"];
for (int j=0; j<imgarr.count; j++)
{
NSDictionary *imgdic = [imgarr objectAtIndex:j];
NSString *strimg = [imgdic objectForKey:@"label"];
contain.strimg = strimg;
}
[myarr addObject:contain];
}
[tblobj reloadData];
}
And Fail the reason of wrong url and network fail then call this method ..
-(void ) getAllAPIDataFail : (NSNotification *)notification {
NSDictionary *dict = [notification userInfo];
ASIHTTPRequest *res = [dict objectForKey:@"index"];
NXJsonParser * parser = [[NXJsonParser alloc] initWithData:[res responseData]];
id result = [parser parse:nil ignoreNulls:NO];
NSLog(@"result=%@",result);
}
Run This project and get following out put if you get error please see above the step again . Output in Log.  Well, This time to Get the useful data in this all Data . In this result first `{} `contain (NSDictionary ) and `( )`Or `[ ]`contain (NSArray). if you want to get Activity`s value from the loans Then you have to implement This Step by Step. Here in the Data `{` indicate Dictionary so we hold This Dictionary in NSDictionary . For Api :- NSDictionary *maindic = (NSDictionary *)result;
NSDictionary *feeddic = [maindic objectForKey:@"feed"];
NSArray *entryarr = [feeddic objectForKey:@"entry"];
for (int i=0; i<entryarr.count; i++)
{
Container *contain = [[Container alloc] init]; // create object of Nsobject(Container)
NSDictionary *subdic = [entryarr objectAtIndex:i];
NSDictionary *namedic = [subdic objectForKey:@"im:name"];
NSString *strname = [namedic objectForKey:@"label"];
contain.strname = strname; // fetch data in container
NSArray *imgarr = [subdic objectForKey:@"im:image"];
for (int j=0; j<imgarr.count; j++)
{
NSDictionary *imgdic = [imgarr objectAtIndex:j];
NSString *strimg = [imgdic objectForKey:@"label"];
contain.strimg = strimg; // fetch data in container
}
[myarr addObject:contain];
}
[tblobj reloadData];
Note :- In the Method of Table view new Object is needed to Show the Data. ex :-
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
Container *data = [myarr objectAtIndex:indexPath.row];
MyCell *cell = [tblobj dequeueReusableCellWithIdentifier:@"cell"];
cell.lbl.text = data.strname;
cell.imageView.image=[UIImage imageWithData:[NSData dataWithContentsOfURL: [NSURL URLWithString:data.strimg]]];
return cell;
}
I think Its May be Very Helpful to You.Thanks!! |
