coredata - iOS App codez

#import <UIKit/UIKit.h>

#import "AppDelegate.h"

@interface ViewController : UIViewController

@property (weak, nonatomic) IBOutlet UITextField *actorNameTF;

@property (weak, nonatomic) IBOutlet UITextField *industryTF;

- (IBAction)submitBtn:(id)sender;

@property NSManagedObjectContext *MOC;

@property NSManagedObjectContext *MOC1;

@property AppDelegate *appDel;

@property NSEntityDescription *actorEntityRef;

- (IBAction)fetchDetails:(id)sender;

- (IBAction)deleteBtn:(id)sender;

@property NSArray *actorArray;

- (IBAction)update:(id)sender;

@property NSFetchRequest *fetchReq;

@property NSManagedObject *managedObject;

@property NSManagedObject *managedObject1;

@property NSURLSession *urlSession;

@property NSMutableURLRequest *urlReq;

@property NSEntityDescription *premDetailsRef;

@property NSURLSessionDataTask *dataTask;

@property NSMutableDictionary *responseDict;

@property NSMutableArray *arr;

@property NSMutableArray *arr1;

@end

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad

{

[super viewDidLoad];

self.appDel=(AppDelegate *)[[UIApplication sharedApplication]delegate];

self.MOC=self.appDel.persistentContainer.viewContext;

self.MOC1=self.appDel.persistentContainer.viewContext;

self.actorEntityRef=[NSEntityDescription entityForName:@"Actors" inManagedObjectContext:self.MOC];

self.premDetailsRef=[NSEntityDescription entityForName:@"Prem" inManagedObjectContext:self.MOC1];

// Do any additional setup after loading the view, typically from a nib.

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

- (IBAction)submitBtn:(id)sender

{

self.urlSession=[NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];

self.urlReq=[NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"https://rss.itunes.apple.com/api/v1/in/ios-apps/top-free/all/10/explicit.json"]];

self.dataTask=[self.urlSession dataTaskWithRequest:self.urlReq completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error)

{

dispatch_async(dispatch_get_main_queue(), ^{

self.responseDict=[NSJSONSerialization JSONObjectWithData:data options:0 error:nil];

NSLog(@"%@",self.responseDict);

self.managedObject1=[[NSManagedObject alloc]initWithEntity:self.premDetailsRef insertIntoManagedObjectContext:self.MOC1];

self.arr =[[NSMutableArray alloc]init];

// for (int i=0; i<10; i++)

//{

[self.arr addObject:[[[[self.responseDict objectForKey:@"feed"]objectForKey:@"results"]objectAtIndex:0]objectForKey:@"name"]];

[self.managedObject1 setValue:[self.arr objectAtIndex:0] forKey:@"name"];

[self.appDel saveContext];

//}

});

}];

[self.dataTask resume];

// self.managedObject=[[NSManagedObject alloc]initWithEntity:self.actorEntityRef insertIntoManagedObjectContext:self.MOC];

// [self.managedObject setValue:self.actorNameTF.text forKey:@"name"];

// [self.managedObject setValue:self.industryTF.text forKey:@"industry"];

// [self.appDel saveContext];

}

- (IBAction)fetchDetails:(id)sender

{

NSArray *myarr=[[NSArray alloc]init];

self.fetchReq=[NSFetchRequest fetchRequestWithEntityName:@"Prem"];

NSError *err;

NSEntityDescription *entityDescription = [NSEntityDescription entityForName:@"Prem" inManagedObjectContext:self.MOC];

[self.fetchReq setEntity:entityDescription];

myarr=self.arr;

NSLog(@"%@",myarr);

myarr=[self.MOC executeFetchRequest:self.fetchReq error:&err];

if (err) {

NSLog(@"somthing shhh!!!");

}

else

{

NSLog(@"sucessfully fetched");

for (int i =0; i<myarr.count; i++)

{

NSManagedObject *premObj=[myarr objectAtIndex:i];

NSLog(@"app name is %@ ",[premObj valueForKey:@"name"]);

}

// self.fetchReq=[NSFetchRequest fetchRequestWithEntityName:@"Actors"];

// NSError *err;

// self.actorArray=[self.MOC executeFetchRequest:_fetchReq error:&err];

// if (err)

// {

// NSLog(@"something shhhhhh!!!");

// }else

// {

// NSLog(@"sucessfilly fetched details");

// for (int i=0; i<_actorArray.count; i++)

// {

// NSManagedObject *actorObj=[_actorArray objectAtIndex:i];

// NSLog(@"actor name %@ and industry is %@",[actorObj valueForKey:@"name"],[actorObj valueForKey:@"industry"]);

// }

}

- (IBAction)deleteBtn:(id)sender

{

self.fetchReq = [[NSFetchRequest alloc] init];

self.actorEntityRef = [NSEntityDescription entityForName:@"Actors" inManagedObjectContext:self.MOC];

[self.fetchReq setEntity:self.actorEntityRef];

NSError *error;

self.actorArray = [self.MOC executeFetchRequest:self.fetchReq error:&error];

[self.MOC deleteObject:[self.actorArray objectAtIndex:0]];

//for (NSManagedObject *managedObject in items) {

NSLog(@"%@ object deleted",self.actorArray);

//}

if (![self.MOC save:&error]) {

NSLog(@"Error deleting %@ - error:%@",self.actorEntityRef,error);

}

- (IBAction)update:(id)sender

{

//NSFetchRequest *request = [[NSFetchRequest alloc] init];

self.actorEntityRef=[NSEntityDescription entityForName:@"Actors" inManagedObjectContext:self.MOC];

[self.fetchReq setEntity:self.actorEntityRef];

NSError *error = nil;

NSArray *results = [self.MOC executeFetchRequest:self.fetchReq error:&error];

self.managedObject = [results objectAtIndex:0];

[self.managedObject setValue:@"prem" forKey:@"name"];

}

@end