Hide emoji keyboard when app goes to background

app/src/main/java/chat/rocket/android/chatroom/ui/ChatRoomFragment.kt

@@ -225,6 +225,12 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
         super.onDestroyView()
     }
 
+    override fun onPause() {
+        super.onPause()
+        setReactionButtonIcon(R.drawable.ic_reaction_24dp)
+        emojiKeyboardPopup.dismiss()
+    }
+
     override fun onActivityResult(requestCode: Int, resultCode: Int, resultData: Intent?) {
         if (requestCode == REQUEST_CODE_FOR_PERFORM_SAF && resultCode == Activity.RESULT_OK) {
             if (resultData != null) {

emoji/src/main/java/chat/rocket/android/emoji/ComposerEditText.kt

@@ -22,7 +22,7 @@ class ComposerEditText : AppCompatEditText {
 
     override fun dispatchKeyEventPreIme(event: KeyEvent): Boolean {
         if (event.keyCode == KeyEvent.KEYCODE_BACK) {
-            val state = getKeyDispatcherState()
+            val state = keyDispatcherState
             if (state != null) {
                 if (event.action == KeyEvent.ACTION_DOWN) {
                     state.startTracking(event, this)