Word info is opened on click

app/src/main/AndroidManifest.xml

@@ -24,6 +24,7 @@
             </intent-filter>
         </activity>
         <activity android:name=".activities.AddWordActivity"/>
+        <activity android:name=".activities.WordItemInfoActivity" />
     </application>
 
 </manifest>
\ No newline at end of file

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

 package com.paktalin.vocabularynotebook
 
+import android.content.Context
+import android.content.Intent
 import android.support.v7.widget.RecyclerView
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.TextView
+import com.paktalin.vocabularynotebook.activities.WordItemInfoActivity
 
-class VocabularyAdapter(private val wordItems: List<WordItem>) : RecyclerView.Adapter<VocabularyAdapter.ViewHolder>() {
+class VocabularyAdapter(private val wordItems: List<WordItem>,
+                        private val context: Context) : RecyclerView.Adapter<VocabularyAdapter.ViewHolder>() {
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
         val view = LayoutInflater.from(parent.context)
@@ -15,9 +19,10 @@ class VocabularyAdapter(private val wordItems: List<WordItem>) : RecyclerView.Ad
     }
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        val item = wordItems[position]
-        holder.tvWord.text = item.pojo.word
-        holder.tvTranslation.text = item.pojo.translation
+        val wordItem = wordItems[position]
+        holder.tvWord.text = wordItem.pojo.word
+        holder.tvTranslation.text = wordItem.pojo.translation
+        holder.tvWord.setOnClickListener { openWordItemInfo(wordItem) }
     }
 
     override fun getItemCount(): Int {
@@ -25,8 +30,14 @@ class VocabularyAdapter(private val wordItems: List<WordItem>) : RecyclerView.Ad
     }
 
     inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
-        var tvWord: TextView = itemView.findViewById(R.id.tvWord)
-        var tvTranslation: TextView = itemView.findViewById(R.id.tvTranslation)
+        val tvWord: TextView = itemView.findViewById(R.id.tvWord)
+        val tvTranslation: TextView = itemView.findViewById(R.id.tvTranslation)
+    }
+
+    private fun openWordItemInfo(wordItem: WordItem) {
+        val intentWordItemInfo = Intent(context, WordItemInfoActivity::class.java)
+        intentWordItemInfo.putExtra("wordItem", wordItem)
+        context.startActivity(intentWordItemInfo)
     }
 
     companion object { private val TAG = "VN/" + VocabularyAdapter::class.java.simpleName }

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

 package com.paktalin.vocabularynotebook;
 
-public class WordItem {
-    public static class WordItemPojo {
+import java.io.Serializable;
+
+public class WordItem implements Serializable {
+    public static class WordItemPojo implements Serializable{
 
         private String word, translation;
 
@@ -27,12 +29,12 @@ public class WordItem {
         }
     }
 
-    private String wordItemId;
+    private String id;
     private WordItemPojo pojo;
 
-    public WordItem(String word, String translation, String wordItemId) {
+    public WordItem(String word, String translation, String id) {
         this.pojo = new WordItemPojo(word, translation);
-        this.wordItemId = wordItemId;
+        this.id = id;
     }
 
     public WordItemPojo getPojo() {
@@ -42,4 +44,12 @@ public class WordItem {
     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/activities/VocabularyFragment.kt

@@ -14,7 +14,6 @@ import com.google.firebase.firestore.FirebaseFirestore
 import com.paktalin.vocabularynotebook.R
 import com.paktalin.vocabularynotebook.VocabularyAdapter
 import com.paktalin.vocabularynotebook.WordItem
-import com.paktalin.vocabularynotebook.WordItem.WordItemPojo
 import kotlinx.android.synthetic.main.fragment_vocabulary.*
 
 class VocabularyFragment : Fragment() {
@@ -37,6 +36,7 @@ class VocabularyFragment : Fragment() {
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         super.onActivityCreated(savedInstanceState)
+        setEmptyAdapter()
         fabAddWord.setOnClickListener( { addWord() } )
         retrieveData()
     }
@@ -46,6 +46,13 @@ class VocabularyFragment : Fragment() {
         FirebaseAuth.getInstance().signOut()
     }
 
+    private fun setEmptyAdapter() {
+        val emptyList:MutableList<WordItem> = mutableListOf()
+        recyclerView.adapter = VocabularyAdapter(emptyList, activity!!)
+        val mLayoutManager = LinearLayoutManager(activity)
+        recyclerView.layoutManager = mLayoutManager
+    }
+
     private fun retrieveData() {
         val userId = FirebaseAuth.getInstance().currentUser!!.uid
         userDocument = db.collection(USERS).document(userId)
@@ -64,9 +71,6 @@ class VocabularyFragment : Fragment() {
 
     private fun retrieveVocabularyData() {
         //todo if only one vocabulary exists, open it
-        val mLayoutManager = LinearLayoutManager(activity)
-        recyclerView.layoutManager = mLayoutManager
-
         vocabulary.collection(WORDS).get()
                 .addOnSuccessListener { setVocabularyAdapter(it.documents) }
     }
@@ -87,9 +91,7 @@ class VocabularyFragment : Fragment() {
             wordItems.add(WordItem(word, translation, wordItemId))
         }
 
-        val adapter = VocabularyAdapter(wordItems)
+        val adapter = VocabularyAdapter(wordItems, activity!!)
         recyclerView.adapter = adapter
-
-        //todo setOnItemClickListener
     }
 }
\ No newline at end of file

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

+package com.paktalin.vocabularynotebook.activities
+
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.util.Log
+import com.paktalin.vocabularynotebook.R
+import com.paktalin.vocabularynotebook.WordItem
+import kotlinx.android.synthetic.main.activity_word_info.*
+
+class WordItemInfoActivity: AppCompatActivity() {
+
+    private lateinit var wordItem: WordItem
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_word_info)
+        wordItem = intent.getSerializableExtra("wordItem") as WordItem
+        updateUi()
+    }
+
+    private fun updateUi() {
+        tvWord.text = wordItem.pojo.word
+        tvTranslation.text = wordItem.pojo.translation
+    }
+
+    companion object { private val TAG = "VN/" + WordItemInfoActivity::class.java.simpleName }
+}
\ No newline at end of file

app/src/main/res/layout/activity_word_info.xml

+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/tvWord"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="8dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:text="Word"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <TextView
+        android:id="@+id/tvTranslation"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="8dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:text="Translation"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/tvWord" />
+
+</android.support.constraint.ConstraintLayout>
\ No newline at end of file