burnsoft

[burnsoft]

'Grab latest Tweets' - reusable class

I'm developing a Twitter tool and needed to grab the latest tweets in the public timeline and chuck (technical term) in a tableview for testing.

I've been developing on and off for iOS since it 2008 and, i'm embarrassed to say, have only relatively recently started to design my code for reuse.

I'd also appreciate any comments if anyone spots any bad coding habits or would like to improve it.

Copy the code into your project making sure the calling class registers for the <latestTweetDelegate> in its header file.

Then instantiate the class using your URL, I just use the standard Twitter Public Timeline API:

latestTweets *lt = [[latestTweets alloc] initWithTwitterURL:@"http://api.twitter.com/1/statuses/public_timeline.json?include_entities=true"];

lt.delegate = self;

[lt release];

As it used the JSON parser you'll need to add that to your project as well:

https://github.com/stig/json-framework/

Hope you find it useful.

Nik

Header File:

#import <Foundation/Foundation.h>

@protocol latestTweetsDelegate

- (void)returnedArray:(NSArray*)tArray;

@end

@interface latestTweets : NSObject {

NSMutableData *responseData;

NSMutableArray *resultsArray;

id<latestTweetsDelegate> delegate;

}

@property (nonatomic, retain) NSMutableArray *resultsArray;

@property (retain,nonatomic) id<latestTweetsDelegate> delegate;

- (id)initWithTwitterURL:(NSString *)twitterURL;

@end

Implementation file:

#import "latestTweets.h"

#import "SBJson.h" 

@implementation latestTweets

@synthesize resultsArray, delegate;

- (id)initWithTwitterURL:(NSString *)twitterURL

{

    self = [super init];

    if (self) {

responseData = [[NSMutableData data] retain];

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:twitterURL]];

[[NSURLConnection alloc] initWithRequest:request delegate:self];

}

return self;

}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {

}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {

[responseData appendData:data];

}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {

[connection release];

NSLog(@"Connection failed: %@", [error description]);

}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {

NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];

[responseData release];

NSArray *newData = [responseString JSONValue];

[responseString release];

    [self.delegate returnedArray:newData];

}

#pragma mark Memory Management

- (void)dealloc {

self.resultsArray = nil;

responseData = nil;

self.delegate = nil;

[super dealloc];

}

@end