feat(friends): Interactions, taps, reload

app/src/main/java/fr/plnech/dunbar/Friend.kt

@@ -2,18 +2,23 @@ package fr.plnech.dunbar
 
 import android.graphics.Bitmap
 import android.provider.ContactsContract.Contacts
+import java.util.*
 
 data class Friend(val map: MutableMap<String, String?>, val photo: Bitmap?) {
     override fun toString(): String = "$name"
 
+    fun mapString(): String = map.entries.filter { !it.value.isNullOrEmpty() }.toString()
+
     val name: String?
         get() = map[Contacts.DISPLAY_NAME]
 
     val id: Int
         get() = map[Contacts._ID]!!.toInt()
 
-    val lastTime: String?
-        get() = map[Contacts.LAST_TIME_CONTACTED]
+    val lastTimeStamp = map[Contacts.LAST_TIME_CONTACTED]!!.toLong()
+
+    val lastDate: Date?
+        get() = if (lastTimeStamp > 0) Date(lastTimeStamp) else null
 
     val timesContacted: Int
         get() = map[Contacts.TIMES_CONTACTED]?.toInt() ?: 0

app/src/main/java/fr/plnech/dunbar/FriendsAdapter.kt

+package fr.plnech.dunbar
+
+import android.text.format.DateUtils
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Toast
+import androidx.recyclerview.widget.RecyclerView
+import kotlinx.android.synthetic.main.contact.view.*
+
+
+class FriendsAdapter(
+    private var friends: List<Friend> = mutableListOf()
+) : RecyclerView.Adapter<FriendsViewHolder>() {
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): FriendsViewHolder =
+        FriendsViewHolder(LayoutInflater.from(parent.context).inflate(viewType, parent, false))
+
+    override fun getItemCount(): Int = friends.size
+
+    override fun getItemViewType(position: Int): Int = R.layout.contact
+
+    override fun onBindViewHolder(holder: FriendsViewHolder, position: Int): Unit =
+        holder.bind(friends[position])
+}
+
+class FriendsViewHolder(private val view: View) : RecyclerView.ViewHolder(view) {
+    private val name = view.contactName
+    private val data = view.contactData
+    private val pic = view.pic
+
+    fun bind(friend: Friend) {
+        name.text = friend.name
+        data.text = buildString {
+            if (friend.lastDate != null ) {
+                append(friend.timesContacted)
+                append(" interactions, last ")
+                append(DateUtils.getRelativeTimeSpanString(friend.lastTimeStamp))
+            } else {
+                append("Never interacted")
+            }
+        }
+        view.setOnClickListener {
+            Toast.makeText(view.context, friend.mapString(), Toast.LENGTH_LONG).show()
+        }
+    }
+
+}

app/src/main/java/fr/plnech/dunbar/MainActivity.kt

@@ -8,10 +8,9 @@ import android.provider.ContactsContract
 import android.util.Log
 import android.view.Menu
 import android.view.MenuItem
-import android.widget.ArrayAdapter
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
-import com.google.android.material.snackbar.Snackbar
+import androidx.recyclerview.widget.LinearLayoutManager
 import kotlinx.android.synthetic.main.activity_main.*
 import kotlinx.android.synthetic.main.content_main.*
 import java.io.IOException
@@ -27,11 +26,10 @@ class MainActivity : AppCompatActivity() {
         setSupportActionBar(toolbar)
 
         fab.setOnClickListener { view ->
-            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
-                .setAction("Action", null).show()
+            reloadFriends()
         }
 
-        fetchFriends()
+        reloadFriends()
     }
 
     override fun onCreateOptionsMenu(menu: Menu): Boolean {
@@ -50,8 +48,15 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
-    fun fetchFriends() {
-        Toast.makeText(this@MainActivity, "Fetching friends...", Toast.LENGTH_SHORT).show()
+    private fun reloadFriends() {
+        fetchFriends()
+        displayFriends()
+
+        Toast.makeText(this, "Friends reloaded.", Toast.LENGTH_SHORT).show()
+    }
+
+    private fun fetchFriends() {
+        val newFriends = mutableListOf<Friend>()
 
         contentResolver.query(
             ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
@@ -62,41 +67,43 @@ class MainActivity : AppCompatActivity() {
         )?.let {
             while (it.moveToNext()) {
                 mutableMapOf<String, String?>().also { map ->
-
-                    val indexID = it.getColumnIndex(ContactsContract.Contacts._ID)
-                    val id = it.getLong(indexID)
+                    val indexId = it.getColumnIndex(ContactsContract.Contacts._ID)
+                    val id = it.getLong(indexId)
                     val photo: Bitmap? = getPhoto(id)
 
                     it.columnNames.forEach { name ->
                         val index = it.getColumnIndex(name)
                         map[name] = it.getString(index)
                     }
-                    friends.add(Friend(map, photo))
+                    newFriends.add(Friend(map, photo))
                 }
             }
+            it.close()
 
-            val adapter = ArrayAdapter<Friend>(
-                this, R.layout.contact, R.id.name,
-                friends
-            )
-
-            friendsList.adapter = adapter
-            friendsList.setOnItemClickListener { parent, view, position, id ->
-                val contact: String = adapter.getItem(position)?.toString() ?: "NONE"
-
-//                Snackbar.make(friendsList, contact, Snackbar.LENGTH_INDEFINITE).show()
-                Toast.makeText(this, contact, Toast.LENGTH_LONG).show()
-            }
+            friends.clear()
+            friends.addAll(newFriends)
+        }
 
-            val nbFriends = adapter.count
-            welcomeTitle.text = "$nbFriends ${"friend".plural(nbFriends)} on Dunbar"
+        friends.sortByDescending { it.timesContacted }
+    }
 
-            Toast.makeText(this@MainActivity, "$nbFriends ", Toast.LENGTH_LONG).show()
+    private fun displayFriends() {
+        val adapter = FriendsAdapter(friends)
 
-            it.close()
-        }
+        friendsList.layoutManager = LinearLayoutManager(this)
+        friendsList.setHasFixedSize(true)
+        friendsList.adapter = adapter
+//        friendsList.setOnItemClickListener { parent, view, position, id ->
+//            val contact: String = adapter.getItem(position)?.toString() ?: "NONE"
+//
+//                Snackbar.make(friendsList, contact, Snackbar.LENGTH_INDEFINITE).show()
+//            Toast.makeText(this, contact, Toast.LENGTH_LONG).show()
+//        }
 
+        val nbFriends = adapter.itemCount
+        welcomeTitle.text = "$nbFriends ${"friend".plural(nbFriends)} on Dunbar"
 
+        Toast.makeText(this@MainActivity, "$nbFriends ", Toast.LENGTH_LONG).show()
     }
 
     private fun getPhoto(id: Long): Bitmap? {

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

@@ -4,7 +4,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_height="wrap_content"
     android:elevation="5dp">
 
     <androidx.constraintlayout.widget.ConstraintLayout
@@ -24,12 +24,12 @@
             android:elevation="2dp"
             android:src="@drawable/user"
             app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintRight_toLeftOf="@id/name"
+            app:layout_constraintRight_toLeftOf="@id/contactName"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent" />
 
         <TextView
-            android:id="@+id/name"
+            android:id="@+id/contactName"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:focusable="false"
@@ -38,15 +38,15 @@
             android:gravity="end"
             android:maxLines="2"
             android:textAppearance="@style/TextAppearance.AppCompat.Title"
-            app:layout_constraintBottom_toTopOf="@id/metadata"
+            app:layout_constraintBottom_toTopOf="@id/contactData"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintLeft_toRightOf="@id/pic"
-            app:layout_constraintRight_toLeftOf="@id/name"
+            app:layout_constraintRight_toLeftOf="@id/contactName"
             app:layout_constraintTop_toTopOf="parent"
             tools:text="@tools:sample/full_names" />
 
         <TextView
-            android:id="@+id/metadata"
+            android:id="@+id/contactData"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:layout_marginBottom="15dp"
@@ -58,8 +58,8 @@
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintLeft_toRightOf="@id/pic"
-            app:layout_constraintRight_toLeftOf="@id/name"
-            app:layout_constraintTop_toBottomOf="@id/name"
+            app:layout_constraintRight_toLeftOf="@id/contactName"
+            app:layout_constraintTop_toBottomOf="@id/contactName"
             tools:text="@tools:sample/full_names" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -10,17 +10,19 @@
 
     <TextView
         android:id="@+id/welcomeTitle"
-        android:layout_marginTop="50dp"
+        android:layout_marginTop="10dp"
+        android:layout_marginBottom="10dp"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        tools:text="N friends on Dunbar"
         android:textSize="24sp"
         app:layout_constraintBottom_toTopOf="@id/friendsList"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.0"
+        tools:text="N friends on Dunbar" />
 
-    <ListView
+    <androidx.recyclerview.widget.RecyclerView
         android:id="@+id/friendsList"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"