├── app ├── .gitignore ├── src │ ├── main │ │ ├── res │ │ │ ├── values │ │ │ │ ├── strings.xml │ │ │ │ ├── colors.xml │ │ │ │ └── styles.xml │ │ │ ├── mipmap-hdpi │ │ │ │ ├── ic_launcher.png │ │ │ │ └── ic_launcher_round.png │ │ │ ├── mipmap-mdpi │ │ │ │ ├── ic_launcher.png │ │ │ │ └── ic_launcher_round.png │ │ │ ├── mipmap-xhdpi │ │ │ │ ├── ic_launcher.png │ │ │ │ └── ic_launcher_round.png │ │ │ ├── mipmap-xxhdpi │ │ │ │ ├── ic_launcher.png │ │ │ │ └── ic_launcher_round.png │ │ │ ├── mipmap-xxxhdpi │ │ │ │ ├── ic_launcher.png │ │ │ │ └── ic_launcher_round.png │ │ │ ├── mipmap-anydpi-v26 │ │ │ │ ├── ic_launcher.xml │ │ │ │ └── ic_launcher_round.xml │ │ │ ├── layout │ │ │ │ ├── activity_main.xml │ │ │ │ └── view_post.xml │ │ │ ├── drawable-v24 │ │ │ │ └── ic_launcher_foreground.xml │ │ │ └── drawable │ │ │ │ └── ic_launcher_background.xml │ │ ├── java │ │ │ └── com │ │ │ │ └── codequest │ │ │ │ └── animatedrecyclerview │ │ │ │ ├── Post.kt │ │ │ │ ├── MainActivity.kt │ │ │ │ ├── PostsAdapter.kt │ │ │ │ └── PostViewHolder.kt │ │ └── AndroidManifest.xml │ ├── test │ │ └── java │ │ │ └── com │ │ │ └── codequest │ │ │ └── animatedrecyclerview │ │ │ └── ExampleUnitTest.kt │ └── androidTest │ │ └── java │ │ └── com │ │ └── codequest │ │ └── animatedrecyclerview │ │ └── ExampleInstrumentedTest.kt ├── proguard-rules.pro └── build.gradle ├── animatedrecyclerview ├── .gitignore ├── consumer-rules.pro ├── src │ ├── main │ │ ├── AndroidManifest.xml │ │ ├── res │ │ │ └── values │ │ │ │ └── attrs.xml │ │ └── java │ │ │ └── com │ │ │ └── codequest │ │ │ └── animatedrecyclerview │ │ │ ├── AnimatedItemHolder.kt │ │ │ ├── AnimatedRecyclerAdapter.kt │ │ │ └── AnimatedRecyclerView.kt │ ├── test │ │ └── java │ │ │ └── com │ │ │ └── codequest │ │ │ └── animatedrecyclerview │ │ │ └── ExampleUnitTest.kt │ └── androidTest │ │ └── java │ │ └── com │ │ └── codequest │ │ └── animatedrecyclerview │ │ └── ExampleInstrumentedTest.kt ├── proguard-rules.pro └── build.gradle ├── settings.gradle ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── .gitignore ├── README.md ├── LICENSE.md ├── gradle.properties ├── gradlew.bat └── gradlew /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /animatedrecyclerview/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /animatedrecyclerview/consumer-rules.pro: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /animatedrecyclerview/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | rootProject.name='Animated RecyclerView' 2 | include ':app' 3 | include ':animatedrecyclerview' 4 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | Animated RecyclerView 3 | 4 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codequest-eu/AnimatedRecyclerView/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codequest-eu/AnimatedRecyclerView/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codequest-eu/AnimatedRecyclerView/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codequest-eu/AnimatedRecyclerView/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codequest-eu/AnimatedRecyclerView/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codequest-eu/AnimatedRecyclerView/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codequest-eu/AnimatedRecyclerView/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codequest-eu/AnimatedRecyclerView/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codequest-eu/AnimatedRecyclerView/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codequest-eu/AnimatedRecyclerView/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codequest-eu/AnimatedRecyclerView/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/java/com/codequest/animatedrecyclerview/Post.kt: -------------------------------------------------------------------------------- 1 | package com.codequest.animatedrecyclerview 2 | 3 | data class Post( 4 | val body: String, 5 | val title: String, 6 | val userEmail: String 7 | ) 8 | -------------------------------------------------------------------------------- /animatedrecyclerview/src/main/res/values/attrs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/caches 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | /.idea/navEditor.xml 9 | /.idea/assetWizardSettings.xml 10 | .DS_Store 11 | /build 12 | /captures 13 | .externalNativeBuild 14 | .cxx 15 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Fri May 29 11:46:40 CEST 2020 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #DFDFDF 4 | #DADADA 5 | #03DAC5 6 | #939393 7 | 8 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /animatedrecyclerview/src/main/java/com/codequest/animatedrecyclerview/AnimatedItemHolder.kt: -------------------------------------------------------------------------------- 1 | package com.codequest.animatedrecyclerview 2 | 3 | import android.view.View 4 | import androidx.recyclerview.widget.RecyclerView 5 | 6 | abstract class AnimatedItemHolder(view: View) : RecyclerView.ViewHolder(view) { 7 | abstract fun onEnterFromTop() 8 | abstract fun onExitToTop() 9 | abstract fun onEnterFromBottom() 10 | abstract fun onExitToBottom() 11 | } 12 | -------------------------------------------------------------------------------- /app/src/test/java/com/codequest/animatedrecyclerview/ExampleUnitTest.kt: -------------------------------------------------------------------------------- 1 | package com.codequest.animatedrecyclerview 2 | 3 | import org.junit.Assert.assertEquals 4 | import org.junit.Test 5 | 6 | /** 7 | * Example local unit test, which will execute on the development machine (host). 8 | * 9 | * See [testing documentation](http://d.android.com/tools/testing). 10 | */ 11 | class ExampleUnitTest { 12 | @Test 13 | fun addition_isCorrect() { 14 | assertEquals(4, 2 + 2) 15 | } 16 | } 17 | -------------------------------------------------------------------------------- /animatedrecyclerview/src/test/java/com/codequest/animatedrecyclerview/ExampleUnitTest.kt: -------------------------------------------------------------------------------- 1 | package com.codequest.animatedrecyclerview 2 | 3 | import org.junit.Assert.assertEquals 4 | import org.junit.Test 5 | 6 | /** 7 | * Example local unit test, which will execute on the development machine (host). 8 | * 9 | * See [testing documentation](http://d.android.com/tools/testing). 10 | */ 11 | class ExampleUnitTest { 12 | @Test 13 | fun addition_isCorrect() { 14 | assertEquals(4, 2 + 2) 15 | } 16 | } 17 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Animated Recycler View 2 | Android library for animating RecyclerView items when they enter and leave the screen. 3 | 4 | [Library in action](https://i.imgur.com/wRy5yir.mp4) 5 | 6 | ## How to use 7 | Library binaries in .aar format can be found in Github [releases section](https://github.com/codequest-eu/AnimatedRecyclerView/releases). You can add them to your application by using Project Structure dialog in Android Studio, or manually, by adding `implementation files('libs/animatedrecyclerview-release-x.x.aar')` line to your dependencies in `build.gradle` file. 8 | 9 | ## License 10 | 11 | This project is licensed under the MIT License - see the [LICENSE.md](LICENSE.md) file for details 12 | -------------------------------------------------------------------------------- /app/src/main/java/com/codequest/animatedrecyclerview/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package com.codequest.animatedrecyclerview 2 | 3 | import android.os.Bundle 4 | import androidx.appcompat.app.AppCompatActivity 5 | import cz.quanti.quase.loremkotlinum.Lorem 6 | import kotlinx.android.synthetic.main.activity_main.* 7 | 8 | 9 | class MainActivity : AppCompatActivity() { 10 | private val postsAdapter: PostsAdapter = PostsAdapter() 11 | 12 | override fun onCreate(savedInstanceState: Bundle?) { 13 | super.onCreate(savedInstanceState) 14 | 15 | setContentView(R.layout.activity_main) 16 | 17 | postsRecycler.adapter = postsAdapter 18 | 19 | postsAdapter.submitList(createPosts()) 20 | } 21 | 22 | private fun createPosts(): List = 23 | List(100) { Post(Lorem.tweet(), Lorem.name(), Lorem.email()) } 24 | } 25 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /animatedrecyclerview/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/codequest/animatedrecyclerview/ExampleInstrumentedTest.kt: -------------------------------------------------------------------------------- 1 | package com.codequest.animatedrecyclerview 2 | 3 | import androidx.test.ext.junit.runners.AndroidJUnit4 4 | import androidx.test.platform.app.InstrumentationRegistry 5 | import org.junit.Assert.assertEquals 6 | import org.junit.Test 7 | import org.junit.runner.RunWith 8 | 9 | /** 10 | * Instrumented test, which will execute on an Android device. 11 | * 12 | * See [testing documentation](http://d.android.com/tools/testing). 13 | */ 14 | @RunWith(AndroidJUnit4::class) 15 | class ExampleInstrumentedTest { 16 | @Test 17 | fun useAppContext() { 18 | // Context of the app under test. 19 | val appContext = InstrumentationRegistry.getInstrumentation().targetContext 20 | assertEquals("com.codequest.animatedrecyclerview", appContext.packageName) 21 | } 22 | } 23 | -------------------------------------------------------------------------------- /animatedrecyclerview/src/androidTest/java/com/codequest/animatedrecyclerview/ExampleInstrumentedTest.kt: -------------------------------------------------------------------------------- 1 | package com.codequest.animatedrecyclerview 2 | 3 | import androidx.test.ext.junit.runners.AndroidJUnit4 4 | import androidx.test.platform.app.InstrumentationRegistry 5 | import org.junit.Assert.assertEquals 6 | import org.junit.Test 7 | import org.junit.runner.RunWith 8 | 9 | /** 10 | * Instrumented test, which will execute on an Android device. 11 | * 12 | * See [testing documentation](http://d.android.com/tools/testing). 13 | */ 14 | @RunWith(AndroidJUnit4::class) 15 | class ExampleInstrumentedTest { 16 | @Test 17 | fun useAppContext() { 18 | // Context of the app under test. 19 | val appContext = InstrumentationRegistry.getInstrumentation().targetContext 20 | assertEquals("com.codequest.animatedrecyclerview.test", appContext.packageName) 21 | } 22 | } 23 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 6 | 7 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 9 | 20 | 21 | 22 | -------------------------------------------------------------------------------- /animatedrecyclerview/src/main/java/com/codequest/animatedrecyclerview/AnimatedRecyclerAdapter.kt: -------------------------------------------------------------------------------- 1 | package com.codequest.animatedrecyclerview 2 | 3 | import androidx.recyclerview.widget.DiffUtil 4 | import androidx.recyclerview.widget.ListAdapter 5 | import androidx.recyclerview.widget.RecyclerView 6 | 7 | abstract class AnimatedRecyclerAdapter(itemCallback: DiffUtil.ItemCallback) : 8 | ListAdapter(itemCallback) { 9 | 10 | private var recyclerView: AnimatedRecyclerView? = null 11 | 12 | override fun onAttachedToRecyclerView(recyclerView: RecyclerView) { 13 | super.onAttachedToRecyclerView(recyclerView) 14 | 15 | this.recyclerView = (recyclerView as? AnimatedRecyclerView) 16 | } 17 | 18 | override fun onViewAttachedToWindow(holder: VH) { 19 | super.onViewAttachedToWindow(holder) 20 | 21 | recyclerView?.onAddViewHolder(holder) 22 | } 23 | 24 | override fun onViewDetachedFromWindow(holder: VH) { 25 | super.onViewDetachedFromWindow(holder) 26 | 27 | recyclerView?.onRemoveViewHolder(holder) 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /app/src/main/java/com/codequest/animatedrecyclerview/PostsAdapter.kt: -------------------------------------------------------------------------------- 1 | package com.codequest.animatedrecyclerview 2 | 3 | import android.annotation.SuppressLint 4 | import android.view.LayoutInflater 5 | import android.view.ViewGroup 6 | import androidx.recyclerview.widget.DiffUtil 7 | 8 | class PostsAdapter : AnimatedRecyclerAdapter(ItemCallbackImpl()) { 9 | override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PostViewHolder { 10 | val view = LayoutInflater 11 | .from(parent.context) 12 | .inflate(R.layout.view_post, parent, false) 13 | 14 | return PostViewHolder(view) 15 | } 16 | 17 | override fun onBindViewHolder(holder: PostViewHolder, position: Int) { 18 | holder.bind(getItem(position)) 19 | } 20 | } 21 | 22 | class ItemCallbackImpl : DiffUtil.ItemCallback() { 23 | override fun areItemsTheSame(oldItem: T, newItem: T): Boolean = 24 | oldItem == newItem 25 | 26 | @SuppressLint("DiffUtilEquals") 27 | override fun areContentsTheSame(oldItem: T, newItem: T): Boolean = 28 | oldItem == newItem 29 | } 30 | -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2020 Jakub Komorowski 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | # IDE (e.g. Android Studio) users: 3 | # Gradle settings configured through the IDE *will override* 4 | # any settings specified in this file. 5 | # For more details on how to configure your build environment visit 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html 7 | # Specifies the JVM arguments used for the daemon process. 8 | # The setting is particularly useful for tweaking memory settings. 9 | org.gradle.jvmargs=-Xmx1536m 10 | # When configured, Gradle will run in incubating parallel mode. 11 | # This option should only be used with decoupled projects. More details, visit 12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 13 | # org.gradle.parallel=true 14 | # AndroidX package structure to make it clearer which packages are bundled with the 15 | # Android operating system, and which are packaged with your app's APK 16 | # https://developer.android.com/topic/libraries/support-library/androidx-rn 17 | android.useAndroidX=true 18 | # Automatically convert third-party libraries to use AndroidX 19 | android.enableJetifier=true 20 | # Kotlin code style for this project: "official" or "obsolete": 21 | kotlin.code.style=official 22 | -------------------------------------------------------------------------------- /animatedrecyclerview/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | apply plugin: 'kotlin-android' 3 | apply plugin: 'kotlin-android-extensions' 4 | 5 | android { 6 | compileSdkVersion 29 7 | buildToolsVersion "29.0.2" 8 | 9 | defaultConfig { 10 | minSdkVersion 21 11 | targetSdkVersion 29 12 | versionCode 1 13 | versionName "1.0.0" 14 | 15 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 16 | consumerProguardFiles 'consumer-rules.pro' 17 | } 18 | 19 | compileOptions { 20 | sourceCompatibility JavaVersion.VERSION_1_8 21 | targetCompatibility JavaVersion.VERSION_1_8 22 | } 23 | 24 | kotlinOptions { 25 | jvmTarget = "1.8" 26 | } 27 | 28 | buildTypes { 29 | release { 30 | minifyEnabled false 31 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 32 | } 33 | } 34 | 35 | } 36 | 37 | dependencies { 38 | implementation fileTree(dir: 'libs', include: ['*.jar']) 39 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 40 | implementation 'androidx.appcompat:appcompat:1.1.0' 41 | implementation 'androidx.core:core-ktx:1.2.0' 42 | implementation 'androidx.recyclerview:recyclerview:1.1.0' 43 | 44 | testImplementation 'junit:junit:4.13' 45 | 46 | androidTestImplementation 'androidx.test.ext:junit:1.1.1' 47 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0' 48 | } 49 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 9 | 15 | 18 | 21 | 22 | 23 | 24 | 30 | 31 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | apply plugin: 'kotlin-android' 3 | apply plugin: 'kotlin-android-extensions' 4 | 5 | android { 6 | compileSdkVersion 29 7 | buildToolsVersion "29.0.2" 8 | 9 | defaultConfig { 10 | applicationId "com.codequest.animatedrecyclerview" 11 | minSdkVersion 21 12 | targetSdkVersion 29 13 | versionCode 1 14 | versionName "1.0" 15 | 16 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 17 | } 18 | 19 | compileOptions { 20 | sourceCompatibility JavaVersion.VERSION_1_8 21 | targetCompatibility JavaVersion.VERSION_1_8 22 | } 23 | 24 | buildTypes { 25 | release { 26 | minifyEnabled false 27 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 28 | } 29 | } 30 | 31 | } 32 | 33 | dependencies { 34 | implementation fileTree(dir: 'libs', include: ['*.jar']) 35 | implementation project(path: ':animatedrecyclerview') 36 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 37 | implementation 'androidx.appcompat:appcompat:1.1.0' 38 | implementation 'androidx.core:core-ktx:1.3.0' 39 | implementation 'androidx.constraintlayout:constraintlayout:1.1.3' 40 | implementation 'androidx.recyclerview:recyclerview:1.1.0' 41 | 42 | implementation 'com.squareup.retrofit2:retrofit:2.9.0' 43 | implementation 'com.squareup.retrofit2:adapter-rxjava2:2.8.1' 44 | implementation 'com.squareup.retrofit2:converter-gson:2.9.0' 45 | 46 | implementation "io.reactivex.rxjava2:rxandroid:2.1.1" 47 | implementation "io.reactivex.rxjava2:rxjava:2.2.19" 48 | implementation "io.reactivex.rxjava2:rxkotlin:2.4.0" 49 | 50 | implementation 'com.github.Qase:LoremKotlinum:1.0' 51 | 52 | implementation "androidx.swiperefreshlayout:swiperefreshlayout:1.1.0" 53 | 54 | implementation "androidx.cardview:cardview:1.0.0" 55 | 56 | implementation 'com.github.bumptech.glide:glide:4.11.0' 57 | 58 | testImplementation 'junit:junit:4.13' 59 | 60 | androidTestImplementation 'androidx.test.ext:junit:1.1.1' 61 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0' 62 | } 63 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | set DIRNAME=%~dp0 12 | if "%DIRNAME%" == "" set DIRNAME=. 13 | set APP_BASE_NAME=%~n0 14 | set APP_HOME=%DIRNAME% 15 | 16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 17 | set DEFAULT_JVM_OPTS= 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windows variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | 53 | :win9xME_args 54 | @rem Slurp the command line arguments. 55 | set CMD_LINE_ARGS= 56 | set _SKIP=2 57 | 58 | :win9xME_args_slurp 59 | if "x%~1" == "x" goto execute 60 | 61 | set CMD_LINE_ARGS=%* 62 | 63 | :execute 64 | @rem Setup the command line 65 | 66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 67 | 68 | @rem Execute Gradle 69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 70 | 71 | :end 72 | @rem End local scope for the variables with windows NT shell 73 | if "%ERRORLEVEL%"=="0" goto mainEnd 74 | 75 | :fail 76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 77 | rem the _cmd.exe /c_ return code! 78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 79 | exit /b 1 80 | 81 | :mainEnd 82 | if "%OS%"=="Windows_NT" endlocal 83 | 84 | :omega 85 | -------------------------------------------------------------------------------- /animatedrecyclerview/src/main/java/com/codequest/animatedrecyclerview/AnimatedRecyclerView.kt: -------------------------------------------------------------------------------- 1 | package com.codequest.animatedrecyclerview 2 | 3 | import android.content.Context 4 | import android.util.AttributeSet 5 | import android.view.View 6 | import androidx.recyclerview.widget.RecyclerView 7 | 8 | class AnimatedRecyclerView @JvmOverloads constructor( 9 | context: Context, 10 | attrs: AttributeSet? = null, 11 | defStyleAttr: Int = 0 12 | ) : RecyclerView(context, attrs, defStyleAttr) { 13 | private val startAnimationMargin: Float 14 | 15 | init { 16 | context.theme.obtainStyledAttributes( 17 | attrs, 18 | R.styleable.AnimatedRecyclerView, 19 | 0, 20 | 0 21 | ) 22 | .apply { 23 | try { 24 | startAnimationMargin = 25 | getDimension(R.styleable.AnimatedRecyclerView_startAnimationOffset, 100f) 26 | } finally { 27 | recycle() 28 | } 29 | } 30 | } 31 | 32 | private val topMarginY: Float by lazy { startAnimationMargin } 33 | private val bottomMarginY: Float by lazy { height - startAnimationMargin } 34 | 35 | private val itemHolders: MutableList = mutableListOf() 36 | 37 | fun onAddViewHolder(animatedItemHolder: AnimatedItemHolder) { 38 | itemHolders.add(animatedItemHolder) 39 | } 40 | 41 | fun onRemoveViewHolder(animatedItemHolder: AnimatedItemHolder) { 42 | itemHolders.remove(animatedItemHolder) 43 | } 44 | 45 | override fun onScrolled(dx: Int, dy: Int) { 46 | super.onScrolled(dx, dy) 47 | 48 | itemHolders.forEach { 49 | val itemView = it.itemView 50 | when { 51 | itemView.didEnterFromTop(dy) -> it.onEnterFromTop() 52 | itemView.didEnterFromBottom(dy) -> it.onEnterFromBottom() 53 | itemView.didExitToTop(dy) -> it.onExitToTop() 54 | itemView.didExitToBottom(dy) -> it.onExitToBottom() 55 | } 56 | } 57 | } 58 | 59 | private fun View.didEnterFromTop(dy: Int): Boolean = 60 | bottom >= topMarginY && bottom + dy < topMarginY 61 | 62 | private fun View.didEnterFromBottom(dy: Int): Boolean = 63 | top <= bottomMarginY && top + dy > bottomMarginY 64 | 65 | private fun View.didExitToTop(dy: Int): Boolean = 66 | bottom <= topMarginY && bottom + dy > topMarginY 67 | 68 | private fun View.didExitToBottom(dy: Int): Boolean = 69 | top >= bottomMarginY && top + dy < bottomMarginY 70 | } 71 | -------------------------------------------------------------------------------- /app/src/main/res/layout/view_post.xml: -------------------------------------------------------------------------------- 1 | 2 | 10 | 11 | 18 | 19 | 27 | 28 | 33 | 34 | 35 | 48 | 49 | 61 | 62 | 71 | 72 | 73 | 74 | -------------------------------------------------------------------------------- /app/src/main/java/com/codequest/animatedrecyclerview/PostViewHolder.kt: -------------------------------------------------------------------------------- 1 | package com.codequest.animatedrecyclerview 2 | 3 | import android.animation.AnimatorSet 4 | import android.animation.ObjectAnimator 5 | import android.view.View 6 | import androidx.swiperefreshlayout.widget.CircularProgressDrawable 7 | import com.bumptech.glide.Glide 8 | import com.bumptech.glide.load.resource.drawable.DrawableTransitionOptions 9 | import kotlinx.android.synthetic.main.view_post.view.* 10 | 11 | class PostViewHolder(view: View) : AnimatedItemHolder(view) { 12 | private var animator: AnimatorSet? = null 13 | 14 | fun bind(post: Post) { 15 | itemView.apply { 16 | postTitle.text = post.title 17 | postBody.text = post.body 18 | postUserEmail.text = post.userEmail 19 | 20 | val circularProgressDrawable = 21 | CircularProgressDrawable(itemView.context).apply { 22 | strokeWidth = 5f 23 | centerRadius = 30f 24 | start() 25 | } 26 | 27 | Glide 28 | .with(itemView) 29 | .load(getAvatarUrl(post)) 30 | .transition(DrawableTransitionOptions.withCrossFade()) 31 | .placeholder(circularProgressDrawable) 32 | .timeout(5000) 33 | .into(postUserAvatar) 34 | } 35 | } 36 | 37 | private fun getAvatarUrl(post: Post) = 38 | "https://api.adorable.io/avatars/200/${post.userEmail}.png" 39 | 40 | override fun onEnterFromTop() { 41 | animator?.cancel() 42 | animateTranslation( 43 | startTranslationValue = -ANIMATED_TRANSLATION_AMOUNT, 44 | finalTranslationValue = 0f, 45 | startAlphaValue = itemView.alpha, 46 | finalAlphaValue = 1f 47 | ) 48 | } 49 | 50 | override fun onExitToTop() { 51 | animator?.cancel() 52 | animateTranslation( 53 | startTranslationValue = 0f, 54 | finalTranslationValue = -ANIMATED_TRANSLATION_AMOUNT, 55 | startAlphaValue = itemView.alpha, 56 | finalAlphaValue = 0f 57 | ) 58 | } 59 | 60 | override fun onEnterFromBottom() { 61 | animator?.cancel() 62 | animateTranslation( 63 | startTranslationValue = ANIMATED_TRANSLATION_AMOUNT, 64 | finalTranslationValue = 0f, 65 | startAlphaValue = itemView.alpha, 66 | finalAlphaValue = 1f 67 | ) 68 | } 69 | 70 | override fun onExitToBottom() { 71 | animator?.cancel() 72 | animateTranslation( 73 | startTranslationValue = 0f, 74 | finalTranslationValue = ANIMATED_TRANSLATION_AMOUNT, 75 | startAlphaValue = itemView.alpha, 76 | finalAlphaValue = 0f 77 | ) 78 | } 79 | 80 | private fun animateTranslation( 81 | startTranslationValue: Float, 82 | finalTranslationValue: Float, 83 | startAlphaValue: Float, 84 | finalAlphaValue: Float 85 | ) { 86 | val translationAnimator = 87 | ObjectAnimator 88 | .ofFloat(itemView, "translationY", startTranslationValue, finalTranslationValue) 89 | 90 | val alphaAnimator = 91 | ObjectAnimator 92 | .ofFloat(itemView, "alpha", startAlphaValue, finalAlphaValue) 93 | 94 | animator = AnimatorSet().apply { 95 | playTogether(translationAnimator, alphaAnimator) 96 | duration = ANIMATION_DURATION 97 | start() 98 | } 99 | } 100 | 101 | private companion object { 102 | const val ANIMATION_DURATION = 150L 103 | const val ANIMATED_TRANSLATION_AMOUNT = 200f 104 | } 105 | } 106 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Attempt to set APP_HOME 10 | # Resolve links: $0 may be a link 11 | PRG="$0" 12 | # Need this for relative symlinks. 13 | while [ -h "$PRG" ] ; do 14 | ls=`ls -ld "$PRG"` 15 | link=`expr "$ls" : '.*-> \(.*\)$'` 16 | if expr "$link" : '/.*' > /dev/null; then 17 | PRG="$link" 18 | else 19 | PRG=`dirname "$PRG"`"/$link" 20 | fi 21 | done 22 | SAVED="`pwd`" 23 | cd "`dirname \"$PRG\"`/" >/dev/null 24 | APP_HOME="`pwd -P`" 25 | cd "$SAVED" >/dev/null 26 | 27 | APP_NAME="Gradle" 28 | APP_BASE_NAME=`basename "$0"` 29 | 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 31 | DEFAULT_JVM_OPTS="" 32 | 33 | # Use the maximum available, or set MAX_FD != -1 to use that value. 34 | MAX_FD="maximum" 35 | 36 | warn () { 37 | echo "$*" 38 | } 39 | 40 | die () { 41 | echo 42 | echo "$*" 43 | echo 44 | exit 1 45 | } 46 | 47 | # OS specific support (must be 'true' or 'false'). 48 | cygwin=false 49 | msys=false 50 | darwin=false 51 | nonstop=false 52 | case "`uname`" in 53 | CYGWIN* ) 54 | cygwin=true 55 | ;; 56 | Darwin* ) 57 | darwin=true 58 | ;; 59 | MINGW* ) 60 | msys=true 61 | ;; 62 | NONSTOP* ) 63 | nonstop=true 64 | ;; 65 | esac 66 | 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 68 | 69 | # Determine the Java command to use to start the JVM. 70 | if [ -n "$JAVA_HOME" ] ; then 71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 72 | # IBM's JDK on AIX uses strange locations for the executables 73 | JAVACMD="$JAVA_HOME/jre/sh/java" 74 | else 75 | JAVACMD="$JAVA_HOME/bin/java" 76 | fi 77 | if [ ! -x "$JAVACMD" ] ; then 78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 79 | 80 | Please set the JAVA_HOME variable in your environment to match the 81 | location of your Java installation." 82 | fi 83 | else 84 | JAVACMD="java" 85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 86 | 87 | Please set the JAVA_HOME variable in your environment to match the 88 | location of your Java installation." 89 | fi 90 | 91 | # Increase the maximum file descriptors if we can. 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 93 | MAX_FD_LIMIT=`ulimit -H -n` 94 | if [ $? -eq 0 ] ; then 95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 96 | MAX_FD="$MAX_FD_LIMIT" 97 | fi 98 | ulimit -n $MAX_FD 99 | if [ $? -ne 0 ] ; then 100 | warn "Could not set maximum file descriptor limit: $MAX_FD" 101 | fi 102 | else 103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 104 | fi 105 | fi 106 | 107 | # For Darwin, add options to specify how the application appears in the dock 108 | if $darwin; then 109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 110 | fi 111 | 112 | # For Cygwin, switch paths to Windows format before running java 113 | if $cygwin ; then 114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 116 | JAVACMD=`cygpath --unix "$JAVACMD"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Escape application args 158 | save () { 159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 160 | echo " " 161 | } 162 | APP_ARGS=$(save "$@") 163 | 164 | # Collect all arguments for the java command, following the shell quoting and substitution rules 165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 166 | 167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong 168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then 169 | cd "$(dirname "$0")" 170 | fi 171 | 172 | exec "$JAVACMD" "$@" 173 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 171 | --------------------------------------------------------------------------------