How to implement Multiline EditText with ActionDone button (without Enter button)

Question

I have EditText which is used for entering contents on messages (emails, sms). I want message to be immediately posted on ActionDone button click. I use following code for this:

message.setOnEditorActionListener((textView, i, keyEvent) -> {
            switch (i) {
                case EditorInfo.IME_ACTION_DONE:
                    if (messageCanBePosted()) {
                        SoftKeyboard.hide(message);
                        postMessage();
                        return true;
                    } else {
                        return false;
                    }
                default:
                    return false;
            }
        }); 

But also I want this message field to be multiline, like in any other messenger apps. I can achieve it with this line:

android:inputType="textMultiLine"

The problem is that after adding this line ActionDone button starts acting like Enter button. So my callback for catching EditorInfo.IME_ACTION_DONE is never called. So each time user press that button cursor moves to new line instead of posting message.

How can I keep both multiline behavior of EditText (ability to show text on multiple lines) and ActionDone button?

Answer 1

Finally, after searching here for similar threads I have found solution. Just need to add these lines on your Activity/Fragment:

editText.setHorizontallyScrolling(false);
editText.setMaxLines(Integer.MAX_VALUE);

For some reason it doesn't work if you apply exact same setting from xml. You should do it programmatically.

There is also another possible solution - derive from EditText and apply EditorInfo.IME_ACTION_DONE manually. But for me first solution looks simpler.