Convert EmojisViewModel to Kotlin

Author: tuancoltech

app/src/main/java/ai/elimu/content_provider/ui/emoji/EmojisFragment.kt

@@ -36,7 +36,7 @@ class EmojisFragment : Fragment() {
 
         emojisViewModel = ViewModelProvider(this).get(EmojisViewModel::class.java)
         binding = FragmentEmojisBinding.inflate(layoutInflater)
-        emojisViewModel!!.text.observe(viewLifecycleOwner, object : Observer<String?> {
+        emojisViewModel?.getText()?.observe(viewLifecycleOwner, object : Observer<String?> {
             override fun onChanged(s: String?) {
                 Log.i(javaClass.name, "onChanged")
                 binding.textEmojis.text = s

app/src/main/java/ai/elimu/content_provider/ui/emoji/EmojisViewModel.kt

@@ -1,19 +1,17 @@
-package ai.elimu.content_provider.ui.emoji;
+package ai.elimu.content_provider.ui.emoji
 
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
-import androidx.lifecycle.ViewModel;
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
 
-public class EmojisViewModel extends ViewModel {
+class EmojisViewModel : ViewModel() {
+    private val text = MutableLiveData<String>()
 
-    private MutableLiveData<String> text;
-
-    public EmojisViewModel() {
-        text = new MutableLiveData<>();
-        text.setValue("EmojisViewModel");
+    init {
+        text.value = "EmojisViewModel"
     }
 
-    public LiveData<String> getText() {
-        return text;
+    fun getText(): LiveData<String> {
+        return text
     }
 }