Homework_10 implementation(RecyclerView)

app/build.gradle

@@ -38,6 +38,9 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.5.1'
     implementation 'com.google.android.material:material:1.7.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'com.github.javafaker:javafaker:1.0.2'
+    implementation 'com.github.bumptech.glide:glide:4.15.1'
+    implementation 'androidx.cardview:cardview:1.0.0'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

app/src/main/java/otus/gpb/recyclerview/ChatTlgAdapter.kt

@@ -0,0 +1,35 @@
+package otus.gpb.recyclerview
+
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import com.bumptech.glide.Glide
+
+class ChatTlgAdapter(  ):RecyclerView.Adapter<ChatTlgViewHolder>(){
+
+    private var ChatItemList = mutableListOf<ChatTlgItem>()
+    fun setList(list: List<ChatTlgItem>) {
+        ChatItemList = list.toList() as MutableList<ChatTlgItem>
+        notifyDataSetChanged()
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ChatTlgViewHolder {
+
+        val view = LayoutInflater.from(parent.context)
+        val binding = view.inflate( R.layout.item_tlg_chat, parent, false )
+        return ChatTlgViewHolder( binding  )
+    }
+
+    override fun getItemCount(): Int {
+        return ChatItemList.size
+    }
+
+    override fun onBindViewHolder( chatViewHolder: ChatTlgViewHolder, position: Int) {
+        chatViewHolder.bind( ChatItemList[position] )
+    }
+    fun onItemSwipe( position:Int, direction:Int ){
+        ChatItemList.removeAt(position)
+        notifyItemRemoved(position)
+    }
+}

app/src/main/java/otus/gpb/recyclerview/ChatTlgService.kt

@@ -0,0 +1,50 @@
+package otus.gpb.recyclerview
+
+import com.github.javafaker.Faker
+
+data class ChatTlgItem(
+// TODO There should be a real structure with Tg chat elements
+    val chatName: String,      // Chat name
+    val messageAuthor: String, // Message author
+    val messageTitle: String,  // Message fragment
+    val messageTime: String,   // Message recv time
+    val messageCnt: Int,       // Message count
+    val photo: String          // Avatar
+)
+
+class ChatTlgService( private val isNewList: Boolean ){
+
+    private var itemsCnt:Int = 6
+    private var chatList = mutableListOf<ChatTlgItem>()
+
+    init {
+        if( isNewList ) itemsCnt = 20
+        val faker = Faker.instance()
+
+        chatList = (0..itemsCnt).map {
+            ChatTlgItem(
+                chatName = faker.name().fullName(),
+                messageAuthor = faker.name().fullName(),
+                messageTitle = faker.book().title(),
+                messageTime = faker.numerify("##:## AM"),//"11:25 AM",
+                messageCnt = faker.number().numberBetween(1,100),
+                photo = IMAGES[it % IMAGES.size],
+            )
+        }.toMutableList()
+    }
+
+    fun getTlgChat() : List<ChatTlgItem>{
+        return chatList
+    }
+
+    companion object {
+        private val IMAGES = mutableListOf(
+            "avatar_1",
+            "avatar_2",
+            "avatar_3",
+            "avatar_4",
+            "avatar_5",
+            "avatar_6"
+        )
+    }
+}

app/src/main/java/otus/gpb/recyclerview/ChatTlgSwipeDelete.kt

@@ -0,0 +1,35 @@
+package otus.gpb.recyclerview
+
+import androidx.recyclerview.widget.ItemTouchHelper
+import androidx.recyclerview.widget.RecyclerView
+
+class TlgItemTouchHelper(  val adapter: ChatTlgAdapter ) : ItemTouchHelper.Callback() {
+
+    override fun getMovementFlags(
+        recyclerView: RecyclerView,
+        viewHolder: RecyclerView.ViewHolder
+    ): Int {
+        val swipeFlags = ItemTouchHelper.START
+        return makeMovementFlags(0 , swipeFlags)
+    }
+
+    override fun isItemViewSwipeEnabled(): Boolean {
+        return true
+    }
+
+    override fun onMove(
+        recyclerView: RecyclerView,
+        viewHolder: RecyclerView.ViewHolder,
+        target: RecyclerView.ViewHolder
+    ): Boolean {
+        return false
+    }
+
+    override fun onSwiped(
+        viewHolder: RecyclerView.ViewHolder,
+        direction: Int
+    ) {
+        val itemPosition:Int = viewHolder.adapterPosition
+        adapter.onItemSwipe( itemPosition, direction )
+    }
+}

app/src/main/java/otus/gpb/recyclerview/ChatTlgViewHolder.kt

@@ -0,0 +1,48 @@
+package otus.gpb.recyclerview
+
+import android.view.View
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import com.bumptech.glide.Glide
+import com.bumptech.glide.load.engine.DiskCacheStrategy
+import org.apache.commons.lang3.ClassUtils.getPackageName
+
+class ChatTlgViewHolder( private val view : View ) : RecyclerView.ViewHolder( view ){
+
+    private val image: ImageView    by lazy { view.findViewById(R.id.imageView) }
+    private val chatName: TextView  by lazy { view.findViewById(R.id.chatNameTextView) }
+    private val messAuthor: TextView by lazy { view.findViewById(R.id.authorTextView) }
+    private val messageText: TextView by lazy { view.findViewById(R.id.messageTextView) }
+    private val messageTime: TextView by lazy { view.findViewById(R.id.timeTextView) }
+    private val messageCnt: TextView by lazy { view.findViewById(R.id.cntMessTextView) }
+
+
+    fun bind( chatTlgItem: ChatTlgItem ) {
+
+        chatName.text = chatTlgItem.chatName
+        messAuthor.text = chatTlgItem.messageAuthor
+        messageText.text = chatTlgItem.messageTitle
+        messageTime.text = chatTlgItem.messageTime
+        messageCnt.text = chatTlgItem.messageCnt.toString()
+
+        image.setImageResource(R.drawable.ic_person)
+
+        val resourceName = chatTlgItem.photo
+        val res = view.context.getResources()
+        val packageName = view.context.packageName
+        val resourceId = res.getIdentifier(resourceName, "drawable", packageName )
+        if (resourceId != 0) {
+
+            image.setImageResource(resourceId)
+            /*
+            Glide.with(view.context)
+                .load(resourceId)
+                .skipMemoryCache(false)
+                .diskCacheStrategy(DiskCacheStrategy.ALL )
+                .circleCrop()
+                .into(image)
+             */
+        }
+    }
+}

app/src/main/java/otus/gpb/recyclerview/MainActivity.kt

@@ -1,12 +1,49 @@
-package otus.gpb.recyclerview
-
-import androidx.appcompat.app.AppCompatActivity
-import android.os.Bundle
-
-class MainActivity : AppCompatActivity() {
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
-    }
+package otus.gpb.recyclerview
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import androidx.recyclerview.widget.DividerItemDecoration
+import androidx.recyclerview.widget.ItemTouchHelper
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+
+class MainActivity : AppCompatActivity() {
+
+    private var ChatTlgList:List<ChatTlgItem> = mutableListOf()
+    private lateinit var chatTlgAdapter:ChatTlgAdapter
+    private lateinit var dividerItemDecoration : DividerItemDecoration
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        ChatTlgList = ChatTlgService( true ).getTlgChat()
+        chatTlgAdapter = ChatTlgAdapter( )
+
+        val manager = LinearLayoutManager(this) // LayoutManager
+        val rv = findViewById<RecyclerView>(R.id.recyclerView)
+        rv.adapter = chatTlgAdapter
+        rv.layoutManager = manager
+        dividerItemDecoration = DividerItemDecoration(
+            rv.context,
+            (rv.layoutManager as LinearLayoutManager).orientation
+        )
+        rv.addItemDecoration(dividerItemDecoration)
+
+        chatTlgAdapter.setList( ChatTlgList )
+
+        var callback = TlgItemTouchHelper( chatTlgAdapter )
+        var itemTouchHelper = ItemTouchHelper( callback )
+        itemTouchHelper.attachToRecyclerView( rv )
+        rv.addOnScrollListener(object : RecyclerView.OnScrollListener() {
+            override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
+                super.onScrolled(recyclerView, dx, dy)
+                if (!recyclerView.canScrollVertically(1)) {
+                    var chatAddList = ChatTlgService( false )
+                    ChatTlgList  = ChatTlgList + chatAddList.getTlgChat()
+                    chatTlgAdapter.setList( ChatTlgList )
+                }
+            }
+        })
+    }
 }

app/src/main/res/drawable/ic_person.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="50dp"
+    android:height="50dp"
+    android:tint="@color/grey"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10s10,-4.48 10,-10S17.52,2 12,2zM12,6c1.93,0 3.5,1.57 3.5,3.5S13.93,13 12,13s-3.5,-1.57 -3.5,-3.5S10.07,6 12,6zM12,20c-2.03,0 -4.43,-0.82 -6.14,-2.88C7.55,15.8 9.68,15 12,15s4.45,0.8 6.14,2.12C16.43,19.18 14.03,20 12,20z" />
+</vector>

app/src/main/res/drawable/round_shape.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+    <solid android:color="#0085FD" />
+    <padding
+        android:left="10dp"
+        android:top="5dp"
+        android:right="10dp"
+        android:bottom="5dp" />
+</shape>

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

@@ -1,13 +1,38 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context=".MainActivity">
-
-    <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/recyclerView"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    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"
+    tools:context=".MainActivity">
+
+    <androidx.appcompat.widget.Toolbar
+        android:id="@+id/toolbar3"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="?attr/colorPrimary"
+        android:minHeight="?attr/actionBarSize"
+        android:theme="?attr/actionBarTheme"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:logo="@drawable/menu"
+        app:title="Telegram"
+        app:titleMargin="4dp"
+        app:titleMarginEnd="20dp"
+        app:titleMarginStart="50dp"
+        app:titleTextAppearance="@style/TextAppearance.AppCompat.Body1"
+        app:titleTextColor="#F6FFFFFF" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginTop="55dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.0"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/toolbar3" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>