Channel members

[Pie133]

Hi i want to force users to join a channel before they can use my bot is there any way that i can get channel members chat_id in a array?

[Clevero]

It's not possible to get all ChatMembers of channel.

You can get only the Administrators (see offical Bot API docs getChatAdministrators)

But what you could do is to check if a specific user is in your channel by using getChatMember (see offical Bot API docs here)

Also I recommend you to look through the offical Bot API docs. Anything what is offical described there is also implemented/possible with this library.

[Pie133]

Sorry but how can use getChatMember in your API ?

[Clevero]

All methods of the offical Bot API are basically also just methods in @rubenlagus's lib.

And you should also know an example for that. sendMessage sendMessage is a method in the API, here also sendMessage -> sendMessage(message);

The same with sendAudio sendAudio -> sendAudio(audio);

And the list goes on, and on, and on...^^

So for getChatMember

GetChatMember getChatMember = new GetChatMember():

//id of the chat (in your case the channel id)
getChatMember.setChatId(chatId);

//id of the user
getChatMember.setUserId(userId);

                   //run the actual method getChatMember
ChatMember member = getChatMember(getChatMember);

[fx2xf]

what happens if a user isn't a member of a channel, does it return an exception? I tried this method and it seems it's not working :-(

[Clevero]

Don't have tested it yet, but it should return null if the user isn't a member of the targeted chat.

Returns a ChatMember object on success. getChatMember

[Fotomultman]

Please, can you make an example with getChatMembersCount ... Dont inderstand how it works

[Clevero]

@Fotomultman try to do the same scheme like in this example https://github.com/rubenlagus/TelegramBots/issues/236#issuecomment-302244907

[Fotomultman]

   GetChatMemberCount getChatMemberCount = new GetChatMemberCount();
   getChatMemberCount.setChatId(ChatID);
   String  members_count = getChatMemberCount (getChatMemberCount).toString(); // gets members count 

Thank you. Nice.

then I tried to get List of ChatMember to getChatAdministrators

GetChatAdministrators getChatAdministrators = new GetChatAdministrators();
getChatAdministrators.setChatId(ChatID);
List<ChatMember> lst = getChatAdministrators (getChatAdministrators);
int admin_count = lst.size(); //gets admins count if they are exists

Nice!