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Xojo Plugin Web API Examples

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(Xojo Plugin) 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 Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM

// 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
Dim oauth2 As New Chilkat.OAuth2
oauth2.AccessToken = "FACEBOOK-ACCESS-TOKEN"

Dim rest As New Chilkat.Rest

// Connect to Facebook and send the following GET request:
Dim success As Boolean
success = rest.Connect("graph.facebook.com",443,True,True)
If (success <> True) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

// Provide the authentication credentials (i.e. the access key)
success = rest.SetAuthOAuth2(oauth2)

// We could limit the number of posts.  The default limit is 25.
success = rest.AddQueryParam("limit","5")

Dim responseJson As String
responseJson = rest.FullRequestNoBody("GET","/v2.7/me/feed")
If (rest.LastMethodSuccess <> True) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

Dim json As New Chilkat.JsonObject
json.EmitCompact = False
success = json.Load(responseJson)

// Show the JSON in human-readable format.
System.DebugLog(json.Emit())

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

Dim dtime As New Chilkat.CkDateTime
Dim bLocalTime As Boolean
bLocalTime = True

Dim dt As Chilkat.DtObj
Dim i As Int32
i = 0
Dim numItems As Int32
numItems = json.SizeOfArray("data")
While i < numItems
    json.I = i
    System.DebugLog("--- " + Str(i))
    Dim message As String
    message = json.StringOf("data[i].message")
    If (json.LastMethodSuccess = True) Then
        System.DebugLog("message: " + message)
    End If

    Dim story As String
    story = json.StringOf("data[i].story")
    If (json.LastMethodSuccess = True) Then
        System.DebugLog("story: " + story)
    End If

    System.DebugLog("id: " + json.StringOf("data[i].id"))

    // We can load the created_time into a CkDateTime...
    success = dtime.SetFromTimestamp(json.StringOf("data[i].created_time"))
    dt = dtime.GetDtObj(bLocalTime)
    System.DebugLog(Str(dt.Month) + "/" + Str(dt.Day) + "/" + Str(dt.Year) + "  " + Str(dt.Hour) + ":" + Str(dt.Minute))

    i = i + 1
Wend

// Finally, there are two paging URLs at the very bottom.  Those can be accessed as shown:
Dim prevUrl As String
prevUrl = json.StringOf("paging.previous")
System.DebugLog("URL for previous page: " + prevUrl)

Dim nextUrl As String
nextUrl = json.StringOf("paging.next")
System.DebugLog("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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