Chilkat Examples

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Objective-C Web API Examples

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(Objective-C) Facebook User Feed (Read Posts)

Demonstrates how to read the feed of posts (including status updates) and links published by this person, or by others on this person's profile. This introductory example gets the first few posts.

Chilkat Objective-C Library Downloads

MAC OS X (Cocoa) Libs

iOS Libs

#import <CkoOAuth2.h>
#import <CkoRest.h>
#import <NSString.h>
#import <CkoJsonObject.h>
#import <CkoDateTime.h>
#import <CkoDtObj.h>

// 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:
BOOL 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];

// We could limit the number of posts.  The default limit is 25.
[rest AddQueryParam: @"limit" value: @"5"];

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];

// Show the JSON in human-readable format.
NSLog(@"%@",[json Emit]);

// A sample JSON response is shown below.  
// This is the code to parse the JSON response.

CkoDateTime *dtime = [[CkoDateTime alloc] init];
BOOL bLocalTime = YES;

CkoDtObj *dt = 0;
int i = 0;
int numItems = [[json SizeOfArray: @"data"] intValue];
while (i < numItems) {
    json.I = [NSNumber numberWithInt: i];
    NSLog(@"%@%d",@"--- ",i);
    NSString *message = [json StringOf: @"data[i].message"];
    if (json.LastMethodSuccess == YES) {
        NSLog(@"%@%@",@"message: ",message);
    }

    NSString *story = [json StringOf: @"data[i].story"];
    if (json.LastMethodSuccess == YES) {
        NSLog(@"%@%@",@"story: ",story);
    }

    NSLog(@"%@%@",@"id: ",[json StringOf: @"data[i].id"]);

    // We can load the created_time into a CkDateTime...
    [dtime SetFromTimestamp: [json StringOf: @"data[i].created_time"]];
    dt = [dtime GetDtObj: bLocalTime];
    NSLog(@"%d%@%d%@%d%@%d%@%d",[dt.Month intValue],@"/",[dt.Day intValue],@"/",[dt.Year intValue],@"  ",[dt.Hour intValue]
        ,@":",[dt.Minute intValue]);

    i = i + 1;
}

// Finally, there are two paging URLs at the very bottom.  Those can be accessed as shown:
NSString *prevUrl = [json StringOf: @"paging.previous"];
NSLog(@"%@%@",@"URL for previous page: ",prevUrl);

NSString *nextUrl = [json StringOf: @"paging.next"];
NSLog(@"%@%@",@"URL for next page: ",nextUrl);

// -------------------------------------------------------------------
// This is a sample JSON response..
// { 
//   "data": [
//     { 
//       "message": "This is the first post.",
//       "created_time": "2016-09-28T14:36:45+0000",
//       "id": "12345678901234567_12345678900000001"
//     },
//     { 
//       "message": "This is the 2nd post.",
//       "created_time": "2016-09-27T03:26:12+0000",
//       "id": "12345678901234567_12345678900000002"
//     },
//     { 
//       "story": "John Doe shared Mary's post.",
//       "created_time": "2016-09-26T15:45:10+0000",
//       "id": "12345678901234567_12345678900000003"
//     },
//     { 
//       "message": "https:\/\/www.somewebsite.org\/?ID=8158",
//       "created_time": "2016-09-26T02:29:20+0000",
//       "id": "12345678901234567_12345678900000004"
//     },
//     { 
//       "message": "http:\/\/blog.somebody.com\/post\/123",
//       "created_time": "2016-09-26T02:02:56+0000",
//       "id": "12345678901234567_12345678900000005"
//     },
//     { 
//       "story": "John Doe shared Bill's photo.",
//       "created_time": "2016-09-25T15:32:09+0000",
//       "id": "12345678901234567_12345678900000006"
//     },
//     { 
//       "message": "Check this out...",
//       "story": "John Doe shared NPR Music's video.",
//       "created_time": "2016-09-25T14:54:52+0000",
//       "id": "12345678901234567_12345678900000007"
//     },
//     { 
//       "message": "Yet another post...",
//       "created_time": "2016-09-24T17:21:30+0000",
//       "id": "12345678901234567_12345678900000008"
//     },
//     { 
//       "message": "http:\/\/www.somewhere.com\/blahblahblah\/",
//       "created_time": "2016-09-23T22:20:29+0000",
//       "id": "12345678901234567_12345678900000009"
//     },
//     { 
//       "message": "At Lincoln marsh ...",
//       "story": "John Doe added 2 new photos.",
//       "created_time": "2016-09-19T02:00:43+0000",
//       "id": "12345678901234567_12345678900000010"
//     },
//     { 
//       "message": "I would've went for a swim had it not been for the sign",
//       "created_time": "2016-09-19T01:59:47+0000",
//       "id": "12345678901234567_12345678900000011"
//     },
//     { 
//       "story": "John Doe shared Steve's video.",
//       "created_time": "2016-09-17T22:00:02+0000",
//       "id": "12345678901234567_12345678900000012"
//     },
//     { 
//       "message": "Another sample message...",
//       "story": "John Doe shared XYZ's post.",
//       "created_time": "2016-09-17T14:13:16+0000",
//       "id": "12345678901234567_12345678900000013"
//     },
//     { 
//       "message": "Hello World!",
//       "created_time": "2016-09-16T23:17:13+0000",
//       "id": "12345678901234567_12345678900000014"
//     },
//     { 
//       "message": "https:\/\/www.youtube.com\/watch?v=xyz",
//       "created_time": "2016-09-15T04:13:02+0000",
//       "id": "12345678901234567_12345678900000015"
//     },
//     { 
//       "story": "John Doe shared Emily's photo.",
//       "created_time": "2016-09-14T16:37:10+0000",
//       "id": "12345678901234567_12345678900000016"
//     },
//     { 
//       "story": "John Doe shared Vincent's photo.",
//       "created_time": "2016-09-14T14:03:42+0000",
//       "id": "12345678901234567_12345678900000017"
//     },
//     { 
//       "message": "https:\/\/www.chilkatsoft.com\/",
//       "created_time": "2016-09-14T02:29:37+0000",
//       "id": "12345678901234567_12345678900000018"
//     },
//     { 
//       "message": "So cool!  Marcus jamming with this 16 year old kid...",
//       "created_time": "2016-09-13T17:04:53+0000",
//       "id": "12345678901234567_12345678900000019"
//     },
//     { 
//       "message": "Wow!",
//       "story": "John Doe shared Somebody's post.",
//       "created_time": "2016-09-13T14:11:18+0000",
//       "id": "12345678901234567_12345678900000020"
//     }
//   ],
//   "paging": { 
//     "previous": "https:\/\/graph.facebook.com\/v2.7\/12345678901234567\/feed?since=1475073405&limit=25&__paging_token=enc_abcT9x9GFabcTxvnyXZC0xnHZCrH2h4yjNZCZAUabcZAI9TyZBibwat6wCYiSFTxR4nSDZAkzaN8vIaEPmqrabc1QTIbGac&__previous=1",
//     "next": "https:\/\/graph.facebook.com\/v2.7\/12345678901234567\/feed?limit=25&until=1473426350&__paging_token=enc_AdDFWabcYtV5ob6lFO8LZAMhm7LKCxntawqqabcZALyC8WZB8Th2lON7HGuJRabzW6Ivfm93LORIw9NNBuHpob7abcjh"
//   }
// }
// 
 

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