iOS Question Posting to Facebook

GEoffT · Sep 22, 2017

I have scoured the Forum and tried several things, but still can't post to Facebook in B4i. Had no problems in B4a.

I have tried the both ways in the code below

first method gives me
-canOpenURL: failed for URL: "(null)" - error: "Invalid input URL"
second does nothing

Any help gratefully received

B4X:

            Dim su As StringUtils
            Dim s As String
           
            s= "fb://publish/profile/#me?text=iphone Test"
            Dim app As Application
            If app.CanOpenUrl(s) Then
                app.OpenUrl(s)
                Log ("s = " & s)
            Else
                Dim mhud As HUD
                mhud.ToastMessageShow(s,True)
            End If

'  OR

            Dim WebView1 As WebView
            WebView1.Initialize("webface")
            WebView1.LoadHtml("<a href='https://www.facebook.com/sharer/sharer.php?u=encodedurl&t=encodedtext'>iphone test</a>")

Erel · Sep 24, 2017

Have you added fb to the #QueriesScheme: https://www.b4x.com/android/forum/threads/ios-9-important-changes.59457/ ?

GEoffT · Sep 24, 2017

Yes I have Erel. I get the following message logged.

-canOpenURL: failed for URL: "(null)" - error: "Invalid input URL"

Erel · Sep 25, 2017

You need to URL encode the text value.

B4X:

Dim s As String = $"fb://publish/profile/#me?text=${su.EncodeUrl("iphone Test", "UTF8")}"$

GEoffT · Sep 25, 2017

Thanks Erel.....still not posting to wall, but it is opening facebook! Onwards and upwards

GEoffT · Sep 26, 2017

Sorry Erel, I think I am being stupid.......

I am trying the similar as above with Twitter (code below) .

I didn't think I needed a #QueriesSchemes for https and yet app.CanOpenUrl is returning false

B4X:

        Case "T"
            Dim s As String
            Dim su As StringUtils
            s= $"https://twitter.com/intent/tweet?text=${su.EncodeUrl(message, "UTF8")}"$
       
            Log ("s = " & s)
            If app.CanOpenUrl(s ) Then
                app.OpenURL(s)
            Else
                Dim mhud As HUD
                mhud.ToastMessageShow(s ,True)
                Log ("s = " & s)
            End If

Erel · Sep 26, 2017

I've tested it with this code:

B4X:

Log(App.CanOpenURL($"https://twitter.com/intent/tweet?text=test"$))

It returns true.

Note that you don't need to check CanOpenUrl for https.

iOS Question Posting to Facebook

GEoffT

Member

Erel

B4X founder

GEoffT

Member

Erel

B4X founder

GEoffT

Member

GEoffT

Member

Erel

B4X founder

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iOS Question Posting to Facebook

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