RediOne1/Expandable-RecyclerView
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Sample with README.md

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Adrian Kuta 2020-01-28 17:53:19 +01:00
parent 12e70f0a6a
commit 7494ec14da
6 changed files with 67 additions and 80 deletions
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9
README.md
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@ -4,8 +4,11 @@
[![License](https://img.shields.io/github/license/AdrianKuta/Expandable-RecyclerView?style=plastic)](https://github.com/AdrianKuta/Expandable-RecyclerView/blob/master/LICENSE)
[![CircleCI](https://img.shields.io/circleci/build/github/AdrianKuta/Expandable-RecyclerView/master?label=CircleCI&style=plastic&logo=circleci)](https://circleci.com/gh/AdrianKuta/Expandable-RecyclerView)
Library is currently during implementation! It is **not** ready to use yet :/
<img src="https://github.com/AdrianKuta/Expandable-RecyclerView/blob/master/Demo.gif" width="720" />
Final version will be released soon.
This RecyclerViewAdapter use Tree(Data Structure) to keep all objects.
## Download
![Release date](https://img.shields.io/date/1580493319?label=Expected%20release&style=for-the-badge)
implementation "com.github.adriankuta:expandable-recyclerView:$latest_versions"

2
app/build.gradle
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@ -32,7 +32,7 @@ dependencies {
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.core:core-ktx:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'com.github.adriankuta:expandable-recyclerView:0.0.1-beta01'
implementation 'com.github.adriankuta:expandable-recyclerView:0.0.1-beta02'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

39
app/src/main/java/com/github/adriankuta/ExpandableAdapter.kt
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@ -1,6 +1,5 @@
package com.github.adriankuta
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
@ -38,39 +37,49 @@ class ExpandableAdapter :
treeNode: ExpandableTreeNode<String>,
nestLevel: Int
) {
holder.bind(treeNode, nestLevel)
holder.bind(treeNode) {
toggleGroup(it)
}
}
sealed class ExpandableViewHolder(val itemView: View) : RecyclerView.ViewHolder(itemView) {
sealed class ExpandableViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
class Level1(private val binding: ItemLevel1Binding) : ExpandableViewHolder(binding.root) {
override fun bind(node: ExpandableTreeNode<String>, nestLevel: Int) {
override fun bind(
node: ExpandableTreeNode<String>,
onClickListener: ((ExpandableTreeNode<String>) -> Unit)?
) {
binding.node = node
binding.root.setOnClickListener { onClickListener?.invoke(node) }
}
}
class Level2(private val binding: ItemLevel2Binding) : ExpandableViewHolder(binding.root) {
override fun bind(node: ExpandableTreeNode<String>, nestLevel: Int) {
override fun bind(
node: ExpandableTreeNode<String>,
onClickListener: ((ExpandableTreeNode<String>) -> Unit)?
) {
binding.node = node
binding.isLastItem = isLastItem(node)
binding.root.setOnClickListener { onClickListener?.invoke(node) }
}
}
class Level3(private val binding: ItemLevel3Binding) : ExpandableViewHolder(binding.root) {
override fun bind(node: ExpandableTreeNode<String>, nestLevel: Int) {
override fun bind(
node: ExpandableTreeNode<String>,
onClickListener: ((ExpandableTreeNode<String>) -> Unit)?
) {
binding.node = node
binding.isLastItem = isLastItem(node)
binding.root.setOnClickListener { onClickListener?.invoke(node) }
}
}
abstract fun bind(node: ExpandableTreeNode<String>, nestLevel: Int)
fun isLastItem(node: ExpandableTreeNode<String>): Boolean {
val parent = node.parent ?: throw IllegalArgumentException("This node hasn't parent")
val childrenSize = parent.children.size
Log.d("DEBUG_TAG", node.value)
return parent.children[childrenSize - 1] == node
}
abstract fun bind(
node: ExpandableTreeNode<String>,
onClickListener: ((ExpandableTreeNode<String>) -> Unit)? = null
)
}
private fun ViewGroup.inflateLevel1(): ItemLevel1Binding {

25
app/src/main/res/layout/item_level_1.xml
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@ -1,38 +1,43 @@
<?xml version="1.0" encoding="utf-8"?>
<layout>
<data>
<variable
name="node"
type="com.github.adriankuta.expandable_recyclerview.ExpandableTreeNode&lt;String>" />
<import type="android.view.View"/>
<import type="android.view.View" />
</data>
<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="wrap_content"
xmlns:tools="http://schemas.android.com/tools">
android:layout_height="wrap_content">
<ImageView
android:id="@+id/expand_icon"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_width="24dp"
android:layout_height="0dp"
android:scaleType="centerInside"
android:visibility="@{node.children.empty ? View.GONE : View.VISIBLE}"
android:src="@{node.expanded ? @drawable/ic_expand_more_black_24dp : @drawable/ic_expand_less_black_24dp}"
android:visibility="@{node.children.empty ? View.GONE : View.VISIBLE}"
app:layout_constraintBottom_toBottomOf="@id/textView"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
app:layout_constraintTop_toTopOf="@id/textView"
tools:src="@drawable/ic_expand_less_black_24dp" />
<TextView
android:id="@+id/textView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:padding="8dp"
android:text="@{node.value}"
tools:text="@tools:sample/full_names"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@id/expand_icon"
app:layout_constraintTop_toTopOf="parent" />
app:layout_constraintTop_toTopOf="parent"
tools:text="@tools:sample/full_names" />
</androidx.constraintlayout.widget.ConstraintLayout>
</layout>

35
app/src/main/res/layout/item_level_2.xml
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@ -2,13 +2,11 @@
<layout>
<data>
<variable
name="isLastItem"
type="Boolean" />
<variable
name="node"
type="com.github.adriankuta.expandable_recyclerview.ExpandableTreeNode&lt;String>" />
<import type="android.view.View"/>
<import type="android.view.View" />
</data>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
@ -17,37 +15,30 @@
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/tree_icon"
android:layout_width="48dp"
android:layout_height="48dp"
android:src="@{isLastItem ? @drawable/ic_last_element : @drawable/ic_middle_element}"
tools:src="@drawable/ic_last_element"
android:tint="@color/colorAccent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="@+id/expand_icon"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_width="24dp"
android:layout_height="0dp"
android:layout_marginStart="24dp"
android:scaleType="centerInside"
android:visibility="@{node.children.empty ? View.GONE : View.VISIBLE}"
android:src="@{node.expanded ? @drawable/ic_expand_more_black_24dp : @drawable/ic_expand_less_black_24dp}"
tools:src="@drawable/ic_expand_less_black_24dp"
app:layout_constraintStart_toEndOf="@id/tree_icon"
app:layout_constraintTop_toTopOf="parent" />
android:visibility="@{node.children.empty ? View.GONE : View.VISIBLE}"
app:layout_constraintBottom_toBottomOf="@id/textView"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@id/textView"
tools:src="@drawable/ic_expand_less_black_24dp" />
<TextView
android:id="@+id/textView"
android:layout_width="0dp"
android:text="@{node.value}"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:padding="8dp"
android:text="@{node.value}"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@id/expand_icon"
app:layout_constraintTop_toTopOf="parent"
app:layout_goneMarginStart="48dp"
tools:text="@tools:sample/full_names" />
</androidx.constraintlayout.widget.ConstraintLayout>
</layout>

37
app/src/main/res/layout/item_level_3.xml
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@ -2,11 +2,6 @@
<layout>
<data>
<variable
name="isLastItem"
type="Boolean" />
<variable
name="node"
type="com.github.adriankuta.expandable_recyclerview.ExpandableTreeNode&lt;String>" />
@ -20,41 +15,25 @@
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/line"
android:layout_width="48dp"
android:layout_height="48dp"
android:src="@drawable/ic_vertical_line"
android:tint="@color/colorAccent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="@+id/tree_icon"
android:layout_width="48dp"
android:layout_height="48dp"
android:src="@{isLastItem ? @drawable/ic_last_element : @drawable/ic_middle_element}"
android:tint="@color/colorAccent"
app:layout_constraintStart_toEndOf="@id/line"
app:layout_constraintTop_toTopOf="parent"
tools:src="@drawable/ic_last_element" />
<ImageView
android:id="@+id/expand_icon"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_width="24dp"
android:layout_height="0dp"
android:layout_marginStart="48dp"
android:scaleType="centerInside"
android:src="@{node.expanded ? @drawable/ic_expand_more_black_24dp : @drawable/ic_expand_less_black_24dp}"
android:visibility="@{node.children.empty ? View.GONE : View.VISIBLE}"
app:layout_constraintStart_toEndOf="@id/tree_icon"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="@id/textView"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@id/textView"
tools:src="@drawable/ic_expand_less_black_24dp" />
<TextView
android:id="@+id/textView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:padding="8dp"
app:layout_goneMarginStart="96dp"
android:text="@{node.value}"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"