- added custom view. (#1)

Author: fabiosassu

.gitignore

@@ -38,6 +38,7 @@ captures/
 
 # IntelliJ
 *.iml
+.idea
 .idea/workspace.xml
 .idea/tasks.xml
 .idea/gradle.xml

app/.gitignore

@@ -0,0 +1 @@
+/build

app/build.gradle

@@ -0,0 +1,48 @@
+plugins {
+    id 'com.android.application'
+    id 'kotlin-android'
+}
+
+android {
+    compileSdkVersion 30
+
+    defaultConfig {
+        applicationId "it.fabiosassu.stackexpandableview"
+        minSdkVersion 21
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildFeatures {
+        viewBinding true
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+}
+
+dependencies {
+
+    implementation project(":stackexpandableview")
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    implementation 'androidx.core:core-ktx:1.3.2'
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'com.google.android.material:material:1.3.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+}

app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/it/fabiosassu/stackexpandableview/ExampleInstrumentedTest.kt

@@ -0,0 +1,22 @@
+package it.fabiosassu.stackexpandableview
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("it.fabiosassu.stackexpandableview", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="it.fabiosassu.stackexpandableview">
+
+    <application
+        android:allowBackup="false"
+        android:fullBackupContent="false"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.StackExpandableView">
+        <activity android:name="it.fabiosassu.stackexpandableview.MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/ic_launcher-playstore.png

@@ -0,0 +1,42 @@
+package it.fabiosassu.stackexpandableview
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.LayoutInflater
+import android.widget.TextView
+import androidx.appcompat.widget.LinearLayoutCompat
+
+/**
+ *
+ */
+class ItemView : LinearLayoutCompat {
+
+    private var textView: TextView? = null
+    var text: String = ""
+        set(value) {
+            field = value
+            textView?.text = field
+        }
+
+    constructor(context: Context) : super(context) {
+        init()
+    }
+
+    constructor(context: Context, attrs: AttributeSet) : super(context, attrs) {
+        init()
+    }
+
+    constructor(context: Context, attrs: AttributeSet, defStyle: Int) : super(
+        context,
+        attrs,
+        defStyle
+    ) {
+        init()
+    }
+
+    private fun init() {
+        LayoutInflater.from(context).inflate(R.layout.layout_item, this, true)
+        textView = findViewById(R.id.text)
+    }
+
+}

app/src/main/java/it/fabiosassu/stackexpandableview/ItemView.kt

@@ -0,0 +1,66 @@
+package it.fabiosassu.stackexpandableview
+
+import android.os.Bundle
+import android.util.TypedValue
+import androidx.appcompat.app.AppCompatActivity
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.core.view.ViewCompat
+import it.fabiosassu.stackexpandableview.databinding.ActivityMainBinding
+
+
+class MainActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivityMainBinding
+    var counter = STARTING_ITEM_NUMBER
+    private val padding: Int
+        get() = TypedValue.applyDimension(
+            TypedValue.COMPLEX_UNIT_DIP,
+            8.toFloat(),
+            resources.displayMetrics
+        ).toInt()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
+        // set data
+        binding.horizontalStack.setWidgets(getLayouts(false))
+        binding.verticalStack.setWidgets(getLayouts())
+        // add items on button click
+        binding.addGroupBtn.setOnClickListener {
+            counter++
+            binding.verticalStack.addWidget(getLayout(counter))
+            binding.horizontalStack.addWidget(getLayout(counter, false))
+        }
+    }
+
+    private fun getLayouts(isVertical: Boolean = true) = mutableListOf<ItemView>().apply {
+        for (index in 1..STARTING_ITEM_NUMBER) {
+            this.add(getLayout(index, isVertical))
+        }
+    }.toList()
+
+    private fun getLayout(index: Int, isVertical: Boolean = true): ItemView {
+        return ItemView(this@MainActivity).apply {
+            id = ViewCompat.generateViewId()
+            layoutParams = if (isVertical) ConstraintLayout.LayoutParams(
+                ConstraintLayout.LayoutParams.MATCH_PARENT,
+                ConstraintLayout.LayoutParams.WRAP_CONTENT,
+            ).apply {
+                setPadding(0, padding, 0, padding)
+            } else ConstraintLayout.LayoutParams(
+                ConstraintLayout.LayoutParams.WRAP_CONTENT,
+                ConstraintLayout.LayoutParams.MATCH_PARENT,
+            ).apply {
+                setPadding(padding, 0, padding, 0)
+            }
+            text = "Layout $index"
+        }
+    }
+
+    companion object {
+        const val STARTING_ITEM_NUMBER = 30
+    }
+
+}

app/src/main/java/it/fabiosassu/stackexpandableview/MainActivity.kt

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>