(Swift 3,4,5...) Iterate Pages in Feed

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

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // 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
    let oauth2 = CkoOAuth2()!
    oauth2.accessToken = "FACEBOOK-ACCESS-TOKEN"

    let rest = CkoRest()!

    // Connect to Facebook and send the following GET request:
    var success: Bool = rest.connect("graph.facebook.com", port: 443, tls: true, autoReconnect: true)
    if success != true {
        print("\(rest.lastErrorText!)")
        return
    }

    // Provide the authentication credentials (i.e. the access key)
    rest.setAuthOAuth2(oauth2)

    // Gets the 1st page in the user's feed.
    var responseJson: String? = rest.fullRequestNoBody("GET", uriPath: "/v2.7/me/feed")
    if rest.lastMethodSuccess != true {
        print("\(rest.lastErrorText!)")
        return
    }

    let json = CkoJsonObject()!
    json.emitCompact = false
    json.load(responseJson)

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

    let nextUrl = CkoUrl()!

    // Get the URL for the next page in the feed.
    var nextUrlStr: String? = json.string(of: "paging.next")
    while json.lastMethodSuccess == true {

        print("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 != true {
            print("\(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.string(of: "paging.next")
    }

    print("No more pages in the feed.")

}