Android Question Send Message to WhatsApp Group

[Pedro Caldeira]

Hello All, I red about a similar project here in the Forum, but as the last post was from 2017, I decided to post new one.

Is it possible to send a Text message to a specific WhatsApp groug ?
This is for Civil Proteccion and disaster managment purposes.

Regards

 

[moster67]

Yes, it is. You need a group id to be able to do that. If you created the group then you have it, otherwise you need to ask the administrator. If you need further information let me know

 

[Pedro Caldeira]

Yes, it is. You need a group id to be able to do that. If you created the group then you have it, otherwise you need to ask the administrator. If you need further information let me know

Hi @moster67 ,
Yes I need to know how to do this, is it via a library ?

 

[moster67]

You need to use an intent. I am not home now but I will post it later

 

[moster67]

If I recall correctly it might be present in the sample project I posted some time ago in regard to Accessibility services. Search for accessibility services here in the forum and you should find it

 

[moster67]

Yes, the code required was included in the sample project I posted in the Accessibility Services thread.

Anyway, here it is:

Dim link As String = "xxxxxxxxxxxxxxxxxxxxxx"  'insert group link. Can only be seen in WhatsApp by user who created the group
        Dim Url As String = "https://chat.whatsapp.com/" & link

        Dim Intent1 As Intent
        Dim pm As PackageManager
        Intent1 = pm.GetApplicationIntent("com.whatsapp")
        If Intent1.IsInitialized Then
            'Se WhatsApp è installato
            Dim Intent2 As Intent
            Intent2.Initialize(Intent2.ACTION_VIEW, Url)
            StartActivity(Intent2)
        Else
            ToastMessageShow("WhatsApp is not installed", True)
            Return
        End If

 

[Pedro Caldeira]

Thanks m8,
Going to give it a try.

Regards,

Pedro Caldeira

 

[Pedro Caldeira]

@moster67 , and how do I send a string to Whatsapp with the intent ?

 

[DonManfred]

The forumsearch IS working!

https://www.b4x.com/android/forum/threads/whatsapp-send-message-to-specific-phone-number.84398/

 

[Pedro Caldeira]

The forumsearch IS working!

https://www.b4x.com/android/forum/threads/whatsapp-send-message-to-specific-phone-number.84398/

so IT seems, thanks

 

[moster67]

On second thoughts, I was perhaps too fast in replying. Groups are a bit special.
The code I posted will open the WhatsApp group, then you need to use the accessibility services to fill in the message and to trigger the send-button.
It should be quite trivial to implement. Just look at the sample project I posted in the other thread.

 

[Pedro Caldeira]

On second thoughts, I was perhaps too fast in replying. Groups are a bit special.
The code I posted will open the WhatsApp group, then you need to use the accessibility services to fill in the message and to trigger the send-button.
It should be quite trivial to implement. Just look at the sample project I posted in the other thread.

Yes, because I have tried several combinations with the send and &text= and nothing works.

 

[moster67]

Modify the sample project using accessibility services according to your needs and it will work....
I did some tests myself when I wrote the library and it worked fine.

 

[Pedro Caldeira]

I have to upgrade B4A,still using the 7.30 Version.

 

[DonManfred]

You need to update anyway as with newer Versions of android you need B4A 8+ to let your app work correctly. I suggest to update.

 

[moster67]

It might work with earlier versions although you may need to adapt the B4A-code a little bit.
If I recall correctly, there is nothing in particular in the java-library, which is the base to get things working, which would prevent you from not using an older version of B4A.

 

[moster67]

ou need to update anyway as with newer Versions of android you need B4A 8+ to let your app work correctly.

Depends whether the app is distributed on Google Play or not.....

 

[DonManfred]

If you want to run your app on Android 8 and you are using targetsdk 26 or higher than this applies to your app too. Even if not published on GPlay.

 

[Pedro Caldeira]

I will update, I was going to do it, anyway. I always like to have, when possible, the lastest versions, for obvious reasons !!