[RootViewController.m]

// Add to top of file
#import "NSDate+InternetDateTime.h"
 

// Replace line that sets articleDate to nil in parseRss
NSDate *articleDate = [NSDate dateFromInternetDateTimeString:articleDateString formatHint:DateFormatHintRFC822];
 
// Replace line that sets articleDate to nil ni parseAtom
NSDate *articleDate = [NSDate dateFromInternetDateTimeString:articleDateString formatHint:DateFormatHintRFC3339];

FileNew File, choose iOSCocoa Touch ClassObjective-C 로 NSArray+Extras를 생성한다.

[NSArray+Extras.h]

//
// Adapted from: http://blog.jayway.com/2009/03/28/adding-sorted-inserts-to-uimutablearray/
//
 
#import <Foundation/Foundation.h>
 
@interface NSArray (Extras)
 
typedef NSInteger (^compareBlock)(id a, id b);
 
-(NSUInteger)indexForInsertingObject:(id)anObject sortedUsingBlock:(compareBlock)compare;
 
@end

[NSArray+Extras.m]
#import "NSArray+Extras.h"
 
@implementation NSArray (Extras)
 
-(NSUInteger)indexForInsertingObject:(id)anObject sortedUsingBlock:(compareBlock)compare {
    NSUInteger index = 0;
    NSUInteger topIndex = [self count];
    while (index < topIndex) {
        NSUInteger midIndex = (index + topIndex) / 2;
        id testObject = [self objectAtIndex:midIndex];
        if (compare(anObject, testObject) < 0) {
            index = midIndex + 1;
        } else {
            topIndex = midIndex;
        }
    }
    return index;
}
 
@end


이제 아래에 다음 코드를 추가하면, 날짜 순 정렬 결과를 볼 수 있다.

[RootViewController.m]

// Add to top of file
#import "NSArray+Extras.h"
 
// In requestFinished, replace the line that sets insertIdx to 0 with this
int insertIdx = [_allEntries indexForInsertingObject:entry sortedUsingBlock:^(id a, id b) {
    RSSEntry *entry1 = (RSSEntry *) a;
    RSSEntry *entry2 = (RSSEntry *) b;
    return [entry1.articleDate compare:entry2.articleDate];
}];







정렬까지 했다. 목록에 관한 작업은 다 끝났다. 이제 내용 보기 부분만 추가하면 끝난다.
FileNew File, choose iOSCocoa Touch ClassUIViewController class, make sure “With XIB for User Interface” is checked

UIViewController를 만들고 아래와 같이 코딩한다.

[WebViewController.h]

#import <UIKit/UIKit.h>
 
@class RSSEntry;
 
@interface WebViewController : UIViewController {
    UIWebView *_webView;
    RSSEntry *_entry;
}
 
@property (retain) IBOutlet UIWebView *webView;
@property (retain) RSSEntry *entry;
 
@end

XIB 파일에 UIWebView를 추가하고, .h파일에서 등록한 outlet과 연결시킨다.
attribute에서 Scales pages to fit을 선택한다.


[WebViewController.m]
// At top of file
#import "RSSEntry.h"
 
// Under @implementation
@synthesize webView = _webView;
@synthesize entry = _entry;
 
// Add new methods
- (void)viewWillAppear:(BOOL)animated {
 
    NSURL *url = [NSURL URLWithString:_entry.articleUrl];    
    [_webView loadRequest:[NSURLRequest requestWithURL:url]];
 
}
 
- (void)viewWillDisappear:(BOOL)animated {
 
    [_webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"about:blank"]]];
 
}
 
// Add inside dealloc
[_entry release];
_entry = nil;
[_webView release];
_webView = nil;



[RootViewController.h]
// Before @interface
@class WebViewController;
 
// Inside @interface
WebViewController *_webViewController;
 
// After @interface
@property (retain) WebViewController *webViewController;

[RootViewController.m]
// At top of file
#import "WebViewController.h"
 
// Under @implementation
@synthesize webViewController = _webViewController;
 
// Replace tableView:didSelectRowAtIndexPath with the following
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
 
    if (_webViewController == nil) {
        self.webViewController = [[[WebViewController alloc] initWithNibName:@"WebViewController" bundle:[NSBundle mainBundle]] autorelease];
    }
    RSSEntry *entry = [_allEntries objectAtIndex:indexPath.row];
    _webViewController.entry = entry;
    [self.navigationController pushViewController:_webViewController animated:YES];
 
}
 
// In didReceiveMemoryWarning
self.webViewController = nil;
 
// In dealloc
[_webViewController release];
_webViewController = nil;

위와 같이 하면, 목록에서 선택시 아래 처럼 내용을 볼 수 있다.



이 예제의 소스는 원문사이트에서 다운로드 할 수 있다. http://www.raywenderlich.com/2636/how-to-make-a-simple-rss-reader-iphone-app-tutorial