init.

.gitignore

@@ -0,0 +1,9 @@
+*.iml
+.gradle
+/local.properties
+/.idea
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx

app/build.gradle

@@ -0,0 +1,36 @@
+apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 29
+    buildToolsVersion "29.0.2"
+
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 29
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.core:core-ktx:1.1.0'
+    implementation 'androidx.recyclerview:recyclerview:1.0.0'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+}

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/com/nooblabs/quickrvadapter/ExampleInstrumentedTest.kt

@@ -0,0 +1,24 @@
+package com.nooblabs.quickrvadapter
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * 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("com.nooblabs.quickrvadapter", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

@@ -0,0 +1,11 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.nooblabs.quickrvadapter">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme" />
+</manifest>

app/src/main/java/com/nooblabs/quickrvadapter/AdapterDsl.kt

@@ -0,0 +1,23 @@
+package com.nooblabs.quickrvadapter
+
+import android.view.View
+import androidx.recyclerview.widget.RecyclerView
+
+/**
+ * Dsl for [RecyclerView.Adapter].
+ */
+class AdapterDsl<T> {
+
+    /**
+     * Stores a list of [ViewBinding]
+     */
+    val viewBindings = arrayListOf<ViewBinding<T, out View>>()
+
+    /**
+     * Bindings of view to data are declared under this.
+     */
+    fun bindings(init: Binding<T>.() -> Unit) {
+        val binding = Binding<T>(this.viewBindings)
+        binding.init()
+    }
+}

app/src/main/java/com/nooblabs/quickrvadapter/Binding.kt

@@ -0,0 +1,20 @@
+package com.nooblabs.quickrvadapter
+
+import android.view.View
+import androidx.annotation.IdRes
+
+/**
+ * Contains bindings of view to data.
+ *
+ * @param bindings list of bindings provided from the [AdapterDsl].
+ */
+class Binding<T>(val bindings: ArrayList<ViewBinding<T, out View>>) {
+
+    /**
+     * Binds [viewId] according to [mapper]
+     */
+    fun <V : View> bind(@IdRes viewId: Int, mapper: (T, V) -> Unit) {
+        val viewBinding = ViewBinding(viewId, mapper)
+        bindings.add(viewBinding)
+    }
+}

app/src/main/java/com/nooblabs/quickrvadapter/Main.kt

@@ -0,0 +1,57 @@
+package com.nooblabs.quickrvadapter
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.annotation.LayoutRes
+import androidx.recyclerview.widget.RecyclerView
+
+/**
+ * Creates a [RecyclerView.Adapter].
+ *
+ * Example Usage:
+ * ```
+ * private val rvAdapter by lazy {
+ *     adapter(R.layout.item_layout, listOf("One", "Two")) {
+ *         bindings {
+ *             bind<TextView>(R.id.count_text) { datum, countTextView ->
+ *                 countTextView.text = datum
+ *             }
+ *         }
+ *     }
+ * }
+ * ```
+ *
+ * @param layout id of the item layout
+ * @param initialData list of initial data
+ * @param init initialization block
+ * @return [RecyclerView.Adapter]
+ */
+fun <T> adapter(
+    @LayoutRes layout: Int, initialData: List<T> = emptyList(),
+    init: AdapterDsl<T>.() -> Unit
+): RecyclerView.Adapter<RvViewHolder> {
+
+    val adapterDsl = AdapterDsl<T>()
+
+    val rvAdapter = object : RecyclerView.Adapter<RvViewHolder>() {
+
+        private val data = initialData
+
+        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RvViewHolder {
+            return RvViewHolder(LayoutInflater.from(parent.context).inflate(layout, parent, false))
+        }
+
+        override fun getItemCount() = data.size
+
+        override fun onBindViewHolder(holder: RvViewHolder, position: Int) {
+            val datum = data[position]
+            adapterDsl.viewBindings.forEach { viewBinding ->
+                viewBinding.mapper(datum, holder.itemView.findViewById(viewBinding.viewId))
+            }
+        }
+    }
+
+    adapterDsl.init()
+
+    return rvAdapter
+}

app/src/main/java/com/nooblabs/quickrvadapter/RvViewHolder.kt

@@ -0,0 +1,9 @@
+package com.nooblabs.quickrvadapter
+
+import android.view.View
+import androidx.recyclerview.widget.RecyclerView
+
+/**
+ * Simple [RecyclerView.ViewHolder].
+ */
+class RvViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)

app/src/main/java/com/nooblabs/quickrvadapter/ViewBinding.kt

@@ -0,0 +1,8 @@
+package com.nooblabs.quickrvadapter
+
+import android.view.View
+
+/**
+ * Single binding between view with id [viewId] according to [mapper].
+ */
+class ViewBinding<T, V : View>(val viewId: Int, val mapper: (T, V) -> Unit)

app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -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>