Moved WordItem from java to kotlin

app/src/main/java/com/paktalin/vocabularynotebook/VocabularyAdapter.kt

@@ -27,8 +27,8 @@ class VocabularyAdapter(private val wordItems: MutableList<WordItem>,
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
         val wordItem = wordItems[position]
-        holder.tvWord.text = wordItem.pojo.word
-        holder.tvTranslation.text = wordItem.pojo.translation
+        holder.tvWord.text = wordItem.pojo!!.word
+        holder.tvTranslation.text = wordItem.pojo!!.translation
         holder.itemView.setOnClickListener { openWordItemInfo(wordItem) }
         holder.itemView.setOnLongClickListener { deleteWordItem(position);true }
     }

app/src/main/java/com/paktalin/vocabularynotebook/WordItem.java

-package com.paktalin.vocabularynotebook;
-
-import android.support.annotation.NonNull;
-import android.util.Log;
-
-import com.google.android.gms.tasks.OnFailureListener;
-import com.google.android.gms.tasks.OnSuccessListener;
-import com.google.firebase.firestore.DocumentReference;
-import com.google.firebase.firestore.FirebaseFirestore;
-
-import java.io.Serializable;
-
-public class WordItem implements Serializable {
-    private static final String TAG = "VN/" + WordItem.class.getSimpleName();
-
-    public static class WordItemPojo implements Serializable{
-
-        private String word, translation;
-
-        public WordItemPojo(String word, String translation) {
-            this.word = word;
-            this.translation = translation;
-        }
-
-        public String getWord() {
-            return word;
-        }
-
-        public void setWord(String word) {
-            this.word = word;
-        }
-
-        public String getTranslation() {
-            return translation;
-        }
-
-        public void setTranslation(String translation) {
-            this.translation = translation;
-        }
-    }
-
-    private String id;
-    private String vocabularyId;
-    private WordItemPojo pojo;
-
-    public WordItem(String word, String translation, String id, String vocabularyId) {
-        this.pojo = new WordItemPojo(word, translation);
-        this.vocabularyId = vocabularyId;
-        this.id = id;
-    }
-
-    public void delete() {
-        FirebaseFirestore.getInstance().collection("vocabularies").document(vocabularyId)
-                .collection("words").document(id).delete()
-                .addOnSuccessListener(new OnSuccessListener<Void>() {
-            @Override
-            public void onSuccess(Void aVoid) {
-                Log.i(TAG, "Successfully deleted word with id " + id);
-            }
-        }).addOnFailureListener(new OnFailureListener() {
-            @Override
-            public void onFailure(@NonNull Exception e) {
-                Log.w(TAG, "deleteWordWithId " + id + ":failure", e.fillInStackTrace());
-            }
-        });
-    }
-
-    public WordItemPojo getPojo() {
-        return pojo;
-    }
-
-    public void setPojo(WordItemPojo pojo) {
-        this.pojo = pojo;
-    }
-
-    public String getId() {
-        return id;
-    }
-
-    public void setId(String id) {
-        this.id = id;
-    }
-}

app/src/main/java/com/paktalin/vocabularynotebook/WordItem.kt

+package com.paktalin.vocabularynotebook
+
+import android.util.Log
+
+import com.google.android.gms.tasks.OnFailureListener
+import com.google.android.gms.tasks.OnSuccessListener
+import com.google.firebase.firestore.DocumentReference
+import com.google.firebase.firestore.FirebaseFirestore
+
+import java.io.Serializable
+
+class WordItem(
+        word: String,
+        translation: String,
+        var id: String?,
+        private val vocabularyId: String) : Serializable {
+
+    var pojo: WordItemPojo? = null
+
+    class WordItemPojo(var word: String?,
+                       var translation: String?) : Serializable
+
+    init {
+        this.pojo = WordItemPojo(word, translation)
+    }
+
+    fun delete() {
+        FirebaseFirestore.getInstance().collection("vocabularies").document(vocabularyId)
+                .collection("words").document(id!!).delete()
+                .addOnSuccessListener { Log.i(TAG, "Successfully deleted word with id $id") }
+                .addOnFailureListener { e -> Log.w(TAG, "deleteWordWithId $id:failure", e.fillInStackTrace()) }
+    }
+
+    companion object {
+        private val TAG = "VN/" + WordItem::class.java.simpleName
+    }
+}

app/src/main/java/com/paktalin/vocabularynotebook/activities/WordItemInfoActivity.kt

@@ -19,8 +19,8 @@ class WordItemInfoActivity: AppCompatActivity() {
     }
 
     private fun updateUi() {
-        tvWord.text = wordItem.pojo.word
-        tvTranslation.text = wordItem.pojo.translation
+        tvWord.text = wordItem.pojo!!.word
+        tvTranslation.text = wordItem.pojo!!.translation
     }
 
     companion object { private val TAG = "VN/" + WordItemInfoActivity::class.java.simpleName }