I have written a ViewController in which i get data from the internet and display it in a UItableview using a json parser which uses object for key to identify its objects.
What i would like your help in is to convert it into MVC pattern to make it less clumsy instead of including everything in the same controller class.
Please try explaining it to me in terms of my code. THANKS IN ADVANCE.
The code is as given below
#import "ViewController.h"
#import "AFNetworking.h"
#import "ModelTableArray.h"
@implementation ViewController
@synthesize tableView = _tableView, activityIndicatorView = _activityIndicatorView, movies = _movies;
- (void)viewDidLoad {
[super viewDidLoad];
// Setting Up Table View
self.tableView = [[UITableView alloc] initWithFrame:CGRectMake(0.0, 0.0, self.view.bounds.size.width, self.view.bounds.size.height) style:UITableViewStylePlain];
self.tableView.dataSource = self;
self.tableView.delegate = self;
self.tableView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
self.tableView.hidden = YES;
[self.view addSubview:self.tableView];
// Setting Up Activity Indicator View
self.activityIndicatorView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
self.activityIndicatorView.hidesWhenStopped = YES;
self.activityIndicatorView.center = self.view.center;
[self.view addSubview:self.activityIndicatorView];
[self.activityIndicatorView startAnimating];
// Initializing Data Source
self.movies = [[NSArray alloc] init];
NSURL *url = [[NSURL alloc] initWithString:@"http://itunes.apple.com/search?term=rocky&country=us&entity=movie"];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];
UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init];
[refreshControl addTarget:self action:@selector(refresh:) forControlEvents:UIControlEventValueChanged];
[self.tableView addSubview:refreshControl];
[refreshControl endRefreshing];
AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {
self.movies = [JSON objectForKey:@"results"];
[self.activityIndicatorView stopAnimating];
[self.tableView setHidden:NO];
[self.tableView reloadData];
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {
NSLog(@"Request Failed with Error: %@, %@", error, error.userInfo);
}];
[operation start];
}
- (void)refresh:(UIRefreshControl *)sender
{
NSURL *url = [[NSURL alloc] initWithString:@"http://itunes.apple.com/search?term=rambo&country=us&entity=movie"];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];
AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {
self.movies = [JSON objectForKey:@"results"];
[self.activityIndicatorView stopAnimating];
[self.tableView setHidden:NO];
[self.tableView reloadData];
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {
NSLog(@"Request Failed with Error: %@, %@", error, error.userInfo);
}];
[operation start];
[sender endRefreshing];
}
- (void)viewDidUnload {
[super viewDidUnload];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;
}
// Table View Data Source Methods
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (self.movies && self.movies.count) {
return self.movies.count;
} else {
return 0;
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellID = @"Cell Identifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellID];
}
NSDictionary *movie = [self.movies objectAtIndex:indexPath.row];
cell.textLabel.text = [movie objectForKey:@"trackName"];
cell.detailTextLabel.text = [movie objectForKey:@"artistName"];
NSURL *url = [[NSURL alloc] initWithString:[movie objectForKey:@"artworkUrl100"]];
[cell.imageView setImageWithURL:url placeholderImage:[UIImage imageNamed:@"placeholder"]];
return cell;
}
@end
