Homework/recyclerview

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

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+package otus.gpb.recyclerview
+
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.recyclerview.widget.RecyclerView
+
+enum class MessageState {
+    IS_READ,
+    IS_SENT,
+    IS_INCOMING
+}
+
+class ChatAdapter(private val items: MutableList<ChatItem>) : RecyclerView.Adapter<ChatAdapter.ChatViewHolder>() {
+    class ChatViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        private val name: TextView by lazy { itemView.findViewById(R.id.nameTV) }
+        private val isMuted: ImageView by lazy { itemView.findViewById(R.id.MutedIcon) }
+        private val isVerified: ImageView by lazy { itemView.findViewById(R.id.VerifiedIcon) }
+        private val isScam: TextView by lazy { itemView.findViewById(R.id.ScamIcon) }
+        private val title: TextView by lazy { itemView.findViewById(R.id.titleTV) }
+        private val hasPrevPic: ImageView by lazy { itemView.findViewById(R.id.prevPic) }
+        private val message: TextView by lazy { itemView.findViewById(R.id.messageTV) }
+        private val messageState: ImageView by lazy { itemView.findViewById(R.id.messageState) }
+        private val time: TextView by lazy { itemView.findViewById(R.id.timeTV) }
+        private val messageCounter: TextView by lazy { itemView.findViewById(R.id.messageCounter) }
+        private val image: ImageView by lazy { itemView.findViewById(R.id.imageAvatar) }
+        fun bind(item: ChatItem){
+            name.text = item.name
+            if (item.isMuted) {
+                isMuted.visibility = View.VISIBLE
+                isMuted.setImageResource(R.drawable.volume_off)
+            }
+            else isMuted.visibility = View.GONE
+            if (item.isVerified) isVerified.setImageResource(R.drawable.check_decagram)
+            if (!item.isScam) isScam.visibility = View.GONE
+            else isScam.visibility = View.VISIBLE
+            if (item.hasPrevPic) {
+                val params = message.layoutParams as ConstraintLayout.LayoutParams
+                params.marginStart = 6
+                message.layoutParams = params
+                hasPrevPic.visibility = View.VISIBLE
+                hasPrevPic.setImageResource(R.drawable.prevpic)
+            }
+            else {
+                hasPrevPic.visibility = View.GONE
+                val params = message.layoutParams as ConstraintLayout.LayoutParams
+                params.marginStart = 0
+                message.layoutParams = params
+            }
+
+            if (item.title.isNullOrEmpty()) {
+                title.visibility = View.GONE
+            }
+            else {
+                title.text = item.title
+            }
+            message.text = item.message
+
+            if (item.messageState == MessageState.IS_SENT) messageState.setImageResource(R.drawable.check_svgrepo_com)
+            if (item.messageState == MessageState.IS_READ) messageState.setImageResource(R.drawable.check_read_svgrepo_com)
+            if (item.messageState == MessageState.IS_INCOMING) messageState.visibility = View.GONE
+            time.text = item.time
+            if (item.messageCounter != null) {
+                messageCounter.visibility = View.VISIBLE
+                messageCounter.text = item.messageCounter.toString()
+            }
+            else messageCounter.visibility = View.GONE
+            image.setImageResource(item.image)
+
+        }
+    }
+//    init {
+//        setHasStableIds(true)
+//    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ChatViewHolder {
+        val view = LayoutInflater.from(parent.context).inflate(R.layout.dialog_view_item, parent, false)
+        return ChatViewHolder(view)
+    }
+
+    override fun getItemCount(): Int {
+        return items.size
+    }
+
+    override fun onBindViewHolder(holder: ChatViewHolder, position: Int) {
+        holder.bind(items[position])
+    }
+
+    fun deleteItem(position: Int) {
+        items.removeAt(position)
+        notifyItemRemoved(position)
+
+    }
+
+}

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

@@ -0,0 +1,18 @@
+package otus.gpb.recyclerview
+
+data class ChatItem(
+    val id: Int,
+    val name: String,
+    val isMuted: Boolean,
+    val isVerified: Boolean,
+    val isScam: Boolean,
+    val hasPrevPic: Boolean,
+    val messageState: MessageState,
+    val title: String?,
+    val message: String,
+    val time: String,
+    val messageCounter: Int?,
+    val image: Int
+)
+
+

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

@@ -0,0 +1,25 @@
+package otus.gpb.recyclerview
+
+import android.view.View
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+
+class ChatViewHolder (
+    private val view: View) : RecyclerView.ViewHolder(view) {
+        private val name: TextView by lazy { view.findViewById(R.id.nameTV) }
+        private val title: TextView by lazy { view.findViewById(R.id.titleTV) }
+        private val message: TextView by lazy { view.findViewById(R.id.messageTV) }
+        private val time: TextView by lazy { view.findViewById(R.id.timeTV) }
+        private val image: ImageView by lazy { view.findViewById(R.id.imageAvatar) }
+        fun bind(item: ChatItem){
+            name.text = item.name
+            title.text = item.title
+            message.text = item.message
+            time.text = item.time
+            image.setImageResource(item.image)
+
+        }
+
+
+}

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

@@ -0,0 +1,140 @@
+package otus.gpb.recyclerview
+
+class Dialogs {
+
+    companion object {
+        fun generateList() : List<ChatItem> {
+            val list = mutableListOf<ChatItem>()
+            var person = ChatItem(
+                id = 1,
+                name = "Pizza",
+                isMuted = true,
+                isVerified = false,
+                isScam = false,
+                hasPrevPic = true,
+                title = "jija",
+                message = "Yes, they are necessary",
+                messageState = MessageState.IS_INCOMING,
+                time = "11:38 AM",
+                messageCounter = null,
+                image = R.drawable.avatar1
+            )
+            list.add(person)
+
+            person = ChatItem(
+                id = 2,
+                name = "Elon",
+                isMuted = true,
+                isVerified = false,
+                isScam = false,
+                hasPrevPic = false,
+                title = "",
+                message = "I love /r/Reddit!",
+                messageState = MessageState.IS_INCOMING,
+                time = "12:44 AM",
+                messageCounter = null,
+                image = R.drawable.avatar2
+            )
+            list.add(person)
+
+            person = ChatItem(
+                id = 3,
+                name = "Pasha",
+                isMuted = true,
+                isVerified = true,
+                isScam = false,
+                hasPrevPic = false,
+                title = null,
+                message = "How are u?",
+                messageState = MessageState.IS_INCOMING,
+                time = "Fri",
+                messageCounter = null,
+                image = R.drawable.avatar3
+            )
+            list.add(person)
+
+            person = ChatItem(
+                id = 4,
+                name = "Tim Cook",
+                isMuted = true,
+                isVerified = true,
+                isScam = false,
+                hasPrevPic = false,
+                title = "Boss of Apple",
+                message = "Android is better",
+                messageState = MessageState.IS_READ,
+                time = "15:02 AM",
+                messageCounter = null,
+                image = R.drawable.avatar4
+            )
+            list.add(person)
+
+            person = ChatItem(
+                id = 5,
+                name = "Telegram Support",
+                isMuted = false,
+                isVerified = true,
+                isScam = false,
+                hasPrevPic = false,
+                title = "Support",
+                message = "Yes it happened.",
+                messageState = MessageState.IS_INCOMING,
+                time = "Thu",
+                messageCounter = 1,
+                image = R.drawable.avatar5
+            )
+            list.add(person)
+
+            person = ChatItem(
+                id = 6,
+                name = "Karina",
+                isMuted = false,
+                isVerified = false,
+                isScam = false,
+                hasPrevPic = false,
+                title = "",
+                message = "Okay",
+                messageState = MessageState.IS_SENT,
+                time = "Wed",
+                messageCounter = null,
+                image = R.drawable.avatar6
+            )
+            list.add(person)
+
+            person = ChatItem(
+                id = 7,
+                name = "Marilyn",
+                isMuted = false,
+                isVerified = false,
+                isScam = true,
+                hasPrevPic = false,
+                title = "",
+                message = "Will it ever happen",
+                messageState = MessageState.IS_READ,
+                time = "May 02",
+                messageCounter = null,
+                image = R.drawable.avatar7
+            )
+            list.add(person)
+
+            repeat(43){
+            val person = ChatItem(
+                id = it + 8,
+                name = "Name ${it + 8}",
+                isMuted = false,
+                isVerified = true,
+                isScam = true,
+                hasPrevPic = false,
+                title = "Name title $it",
+                message = "This is message $it",
+                messageState = MessageState.IS_SENT,
+                time = "12:12 AM",
+                messageCounter = null,
+                image = R.drawable.default_avatar
+            )
+            list.add(person)
+        }
+            return list.toList()
+        }
+    }
+}

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

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+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Paint
+import android.graphics.Rect
+import android.view.View
+import androidx.core.content.ContextCompat
+import androidx.recyclerview.widget.RecyclerView
+import otus.gpb.recyclerview.R
+
+class DividerItemDecoration(context: Context) : RecyclerView.ItemDecoration() {
+    private val dividerPaint: Paint = Paint()
+
+    init {
+        dividerPaint.color = ContextCompat.getColor(context, R.color.divider_color) // Цвет полосы
+        dividerPaint.strokeWidth = 1F // Ширина полосы
+    }
+
+    override fun onDraw(c: Canvas, parent: RecyclerView, state: RecyclerView.State) {
+        val left = parent.paddingLeft
+        val right = parent.width - parent.paddingRight
+
+        for (i in 0 until parent.childCount - 1) {
+            val child = parent.getChildAt(i)
+            val params = child.layoutParams as RecyclerView.LayoutParams
+            val top = child.bottom + params.bottomMargin
+            val bottom = top + dividerPaint.strokeWidth
+            c.drawRect(left.toFloat(), top.toFloat(), right.toFloat(), bottom, dividerPaint)
+        }
+    }
+}