B4A Library Facebook

This library will allow your apps to interact with Facebook.


Requirements:

1- B4A 3.x

2- Facebook account.

3- Copy the Facebook.xml and Facebook.jar to your additional libraries directory.


Usage:

'Initialize the library
Dim FB As Facebook

'Get the following 3 fields from Facebook after creating a Facebook app.
Dim AppID As String = "<APP_ID_FROM_FACEBOOK>"
Dim AppSecret As String = "<APP_SECRET_FROM_FACEBOOK>"
Dim myWebsite As String = "<LINK_TO_THE_WEBSITE_IN_REDIRECT_URI>"

FB.Initialize(Activity, Me, "myFB", AppID, AppSecret, myWebsite)

'Login to Facebook
FB.Login

'Get your profile
FB.GetMyProfile

...

'Display profile fields
Sub myFB_MyProfile_Response(Profile As Map)

    Dim Temp As String

    For I = 0 To Profile.Size - 1

        Temp = Temp & Profile.GetKeyAt(I) & ": " & Profile.GetValueAt(I) & CRLF

    Next

    Msgbox(Temp, "My Profile")


End Sub

The attached files contain:

a- The Facebook library.

b- "How to create a Facebook app" quick guide.

c- A sample project.


NOTES: You have to have some basic knowledge of the Facebook API to use it, especially about permissions, the library allows you to interact with Facebook but you are responsible to add/remove the necessary permissions for the actions you want to perform.

You have to create a Facebook app before you can use the library, the instructions are in the quick guide mentioned on item "b" above.


A DEMO app (apk) is also attached for you to take a look at the library's functionality.

Library recompiled on May 28, 2017 (B4A 6.8+)

 

[Douglas Farias]

i seted http://likeapps.net/index.html and works but i need clean the cache of app to work

have a way to make a button the cleand this app cache? can make a log out with this

now works fine i cleaned the cache and works *-*

 

[NJDude]

Unfortunately there's no way to clear the cache, I mentioned that on a previous post.

 

[Douglas Farias]

NJDUDE how can i return the profile result in edittext1.text?

i m trying

Sub GetMyProfileButton_Click

fb.GetMyProfile

EditText1.TEXT = fb.USER_FIELD_NAME
End Sub

but it return name only

how the simple way to show the result Douglas name?

 

[NJDude]

If you take a look at the sample project, you will see that the fields are returned in a MAP, you will have to grab the ones you need.

 

[Douglas Farias]

ok this works
edittext1.Text = profile.Get("locale")
last question this show the strings only
but the profile photo?

imageview.bitmap = ?

 

[NJDude]

Facebook only returns the link to the photos, you will have to download them and then place them on an ImageView.

 

[tuhatinhvn]

why give me error
redirect_uri isn't an absolute URI check RDC 3986

i m tryed to use localhost
http://google.com

my site www.likeapps.net and http://likeapps.net

and same error *-*

same with login

{
"error": {
"message": "redirect_uri isn't an absoluted URI. Check RFC 3986.",
"type": "OAuthException",
"code": 191
}
}



when i try another button show me

Facebook Error
Cannot post message to the timeline

an active acess token must be used to query information about the current user.

Close


here is the image

how do you fix it?

 

[Douglas Farias]

need a page exemple google.com/index.html < index.html

and need clean app cache later, only unistal and install the app again dont solv the problem need clean the app cache *-*

 

[tuhatinhvn]

Ok, but this library is same other B4A Facebook , only web, user must login

Can i use token from Facebook App Android?

Here is SDK Facebook and guide to use but i can not convert it to B4A library, i think this library is from it, but no (

https://developers.facebook.com/docs/android/

Many Platform is supported but B4A is no (

https://developers.facebook.com/docs/other-sdks

 

[Douglas Farias]

yes can you get all informations and show this on your app
name
gender etc

photo is only the problem u need open the webview with the url

                    resultado =  Profile.Get("id")
                   
                    'ImageView1.Bitmap = caca
                   
                    caca2 = "https://graph.facebook.com/" & resultado & "/picture"

i dont know the code to get profile photo *-*

 

[walterf25]

About time you released it Bud, hahaha!
Great Job, i must say i'm the first one to use your library in my whack A Bieber game.

Thanks a lot bud, and great Job!!!!

 

[NJDude]

The attached example gets the user's profile including his/her picture and displays it.

The example is using one of the "advanced" methods the Facebook library includes.

 

[Douglas Farias]

very thx NJDude you help many many users *-*

 

[tuhatinhvn]

Can users use app without login because they already logined in Facabook apps??

https://developers.facebook.com/docs/android/

Many Platform is supported but B4A is no

https://developers.facebook.com/docs/other-sdks

 

[NJDude]

This library is based on the Facebook Graph API, it doesn't interact with the Facebook app.

 

[Douglas Farias]

NJDude its prosible to remove the close icon in the facebook login to force player log on ? or get a result when player close the login page?

exemple i click at login button and i close this on x icon show me a msgbox login closed

 

[NJDude]

The user should have the option to login or not, forcing is never advisable.

 

[Douglas Farias]

but have a way to get a result when he close ?

 

[NJDude]

but have a way to get a result when he close ?

No.

 

[sonicmayne]

I get the error "An active access token must be used to query information about the current user" when trying to use the sample app.