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StreamвЂ™s API is powered by Go, RocksDB and Raft. You should also notice that, regardless of whether you chose to develop your app in Kotlin or Java, the chat loads very quickly.

Threads: start message threads to reply to any message.

Edit message: long-press on your message for message options, including editing.

Attachments: use the paperclip button in MessageInputView to attach images and files.

Reactions: long-press on a messages to add a reaction.

Commands: type / to use commands like /giphy.

Link previews: generated automatically when you send a link.

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Offline support: send messages, edit messages and send reactions while offline.

If we're already in the channel, it will navigate to the channel list by emitting a NavigateUp state that we handle by finishing ChannelActivity.Д¬ongrats on getting your chat experience up and running! Stream Chat provides you with all the features you need to build an engaging messaging experience:

If we're in a message thread, it'll navigate back to the channel.

#MAKE A SIMPLE ANDROID APP JAVA HOW TO#

The handler sends a BackButtonPressed event to the MessageListViewModel, which will decide how to handle this event. Steps 5 and 6: We create a back button handler, and set the same behavior for the MessageListHeaderView and the Activity's OnBackPressedDispatcher.The MessageInputView needs to know when youвЂ™re editing a message or when you enter a message thread, which is also a piece of useful information for MessageListHeaderView. Steps 3 and 4: We coordinate the MessageListView with both MessageListHeaderView and MessageInputView.This loose coupling between components makes it easy to customize things, or only use the components you find necessary. Step 2: We bind these ViewModels to their respective Views.

MessageInputViewModel - Responsible for composing and sending new messages.MessageListViewModel - Loads a channel's messages, while also providing useful information about the current state of the channel.MessageListHeaderViewModel - Provides useful information about the channel.Step 4: We bind our ChannelListView to the ChannelListViewModel by calling the bindView function.Д¬onfiguring ChannelActivity involves a few steps, so let's review what's going on.The documentation about Querying Channels covers this in more detail.

For the filter, weвЂ™re specifying all channels of type messaging where the current user is a member. WeвЂ™re using the default sort option which orders the channels by last_updated_at time, putting the most recently used channels on the top.

Step 3: We configure the ChannelListViewModelFactory with a filter and a sort option.

For more information, see the Tokens & Authentication page. In a real-world application, your authentication backend would generate such a token at login / signup and hand it over to the mobile app.

Step 2: We create a User instance and pass it to the ChatClient's connectUser method, along with a pre-generated user token, in order to authenticate the user.

For a production app, we recommend initializing these two classes in your Application class. Next, we initialize the ChatDomain for the convenience of its offline storage capabilities and client interactions for data retrieval.

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This key points to a tutorial environment, but you can sign up for a free Chat trial to get your own later.

Step 1: We create a connection to Stream by initializing the ChatClient using an API key.

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