Messagekit: MessageInputBar not resize after message sent

[Elshad]

General Information

• MessageKit Version: 0.12.1

• iOS Version(s): 11

• Swift Version: 4

• Devices/Simulators: Tested in Simulator

• Reproducible in ChatExample? (Yes/No): No, i cant reproduce in ChatExample

What happened?

What did you expect to happen?

When

When sent message lines count bigger than 1 textView not resize its height.

let chatMessage = ChatMessage(
    text: text, 
    sender: self.currentSender(),
    messageId: UUID().uuidString, 
    date: Date()
)
vmodel.append(message: chatMessage)
inputBar.inputTextView.text = String()
messagesCollectionView.reloadData()
messagesCollectionView.scrollToBottom()

[Elshad]

I found the solution, but i dont know its good solution or not.
If it is OK, please close this issue

let chatMessage = ChatMessage(
    text: text, 
    sender: self.currentSender(),
    messageId: UUID().uuidString, 
    date: Date()
)
vmodel.append(message: chatMessage)
inputBar.inputTextView.text = String()
inputBar.invalidateIntrinsicContentSize() // Added to force inputBar to resize its layout
messagesCollectionView.reloadData()
messagesCollectionView.scrollToBottom()

[SD10]

cc @nathantannar4

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[nathantannar4]

You said you can't reproduce it in the ChatExample. Can you please tell me how you are setting up your MessageInputBar? And what are you doing when the user taps send

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[Elshad]

Now i tested, it seems that everything are ok. I can't reproduce it in my app too. Maybe it was Simulator related bug. I think we can close this issue.
Thank you for you answers and sorry that wasted your time

[BasThomas]

No worries @Elshad, thanks for following up! Feel free to reopen if you stumble upon it in the future.

[tflin]

It happens in ChatExample. (latest 0.13.0)
Just modify the lines in MessageInputBarDelegate.messageInputBar(_ inputBar: MessageInputBar, didPressSendButtonWith text: String) to be in a DispatchQueue such as:
DispatchQueue.main.async {
inputBar.inputTextView.text = String()
self.messagesCollectionView.scrollToBottom()
}

Then this problem happens.

It is common to clear inputBar.inputTextView.text after you successfully send the message to server. So it would be async and will not clean inputTextView when the callback is called.

[nathantannar4]

If you are doing this async then you need to call invalidateIntrinsicContentSize. We normally do it after calling the delegate function but if you don’t clear the InputTextView right away then it’s not resized upon clearing the text

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[SD10]

@tflin It would be better to store the message locally, clear the text field immediately, then attempt to send it to server.

In messaging applications this is how it is usually done. With the addition of a failure message if the message didn’t make to the server, allowing the user to resend.

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[nathantannar4]

^ yup that's how I do it

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[SD10]

Closing this one. Thank you for the feedback everyone 👍