Objective-C

Iterate Pages in Feed

See more Facebook Examples

Demonstrates how to read the next page in the user's Facebook feed, and iterates through all of the pages in the Facebook feed. Objective-C

#import <CkoOAuth2.h>
#import <CkoRest.h>
#import <NSString.h>
#import <CkoJsonObject.h>
#import <CkoUrl.h>

BOOL success = NO;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// This example assumes a previously obtained an access token
CkoOAuth2 *oauth2 = [[CkoOAuth2 alloc] init];
oauth2.AccessToken = @"FACEBOOK-ACCESS-TOKEN";

CkoRest *rest = [[CkoRest alloc] init];

// Connect to Facebook and send the following GET request:
success = [rest Connect: @"graph.facebook.com" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: YES];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// Provide the authentication credentials (i.e. the access key)
[rest SetAuthOAuth2: oauth2];

// Gets the 1st page in the user's feed.
NSString *responseJson = [rest FullRequestNoBody: @"GET" uriPath: @"/v2.7/me/feed"];
if (rest.LastMethodSuccess != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

CkoJsonObject *json = [[CkoJsonObject alloc] init];
json.EmitCompact = NO;
[json Load: responseJson];

// 
// See Parsing the Facebook User Feed for code showing how to parse the JSON feed content.
// 

CkoUrl *nextUrl = [[CkoUrl alloc] init];

// Get the URL for the next page in the feed.
NSString *nextUrlStr = [json StringOf: @"paging.next"];
while (json.LastMethodSuccess == YES) {

    NSLog(@"%@%@",@"Next page URL: ",nextUrlStr);

    [nextUrl ParseUrl: nextUrlStr];

    // Prepare for getting the next page in the feed.
    // We can continue using the same REST object.
    // If already connected, we'll continue using the existing connection.
    // Otherwise, a new connection will automatically be made if needed.
    [rest ClearAllQueryParams];
    [rest AddQueryParams: nextUrl.Query];

    responseJson = [rest FullRequestNoBody: @"GET" uriPath: @"/v2.7/me/feed"];
    if (rest.LastMethodSuccess != YES) {
        NSLog(@"%@",rest.LastErrorText);
        return;
    }

    [json Load: responseJson];
    // See Parsing the Facebook User Feed for code showing how to parse the JSON feed content.

    // Get the URL for the next page.
    nextUrlStr = [json StringOf: @"paging.next"];
}

NSLog(@"%@",@"No more pages in the feed.");