├── .gitignore ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── example │ │ └── sagar │ │ └── physicsanimation │ │ └── ExampleInstrumentedTest.kt │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── example │ │ │ └── sagar │ │ │ └── physicsanimation │ │ │ ├── MainActivity.kt │ │ │ ├── chainanimation │ │ │ └── ChainAnimationFragment.kt │ │ │ ├── flinganimation │ │ │ └── FlingAnimationFragment.kt │ │ │ ├── springanimation │ │ │ └── SpringAnimationFragment.kt │ │ │ └── utils │ │ │ ├── PhysicsAnimationExtensions.kt │ │ │ └── Utils.kt │ └── res │ │ ├── drawable │ │ ├── ic_android.xml │ │ └── ic_launcher_background.xml │ │ ├── layout │ │ ├── activity_main.xml │ │ ├── drawer_header_layout.xml │ │ ├── fragment_chain_animation.xml │ │ ├── fragment_fling_animation.xml │ │ └── fragment_spring_animation.xml │ │ ├── menu │ │ └── drawer_menu.xml │ │ ├── mipmap-anydpi-v26 │ │ ├── ic_launcher.xml │ │ └── ic_launcher_round.xml │ │ ├── mipmap-hdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-mdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xhdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxhdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxxhdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── navigation │ │ └── nav_animation.xml │ │ └── values │ │ ├── colors.xml │ │ ├── dimens.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── example │ └── sagar │ └── physicsanimation │ └── ExampleUnitTest.kt ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | # Built application files 2 | *.apk 3 | *.ap_ 4 | 5 | # Files for the ART/Dalvik VM 6 | *.dex 7 | 8 | # Java class files 9 | *.class 10 | 11 | # Generated files 12 | bin/ 13 | gen/ 14 | out/ 15 | 16 | # Gradle files 17 | .gradle/ 18 | build/ 19 | 20 | # Local configuration file (sdk path, etc) 21 | local.properties 22 | 23 | # Proguard folder generated by Eclipse 24 | proguard/ 25 | 26 | # Log Files 27 | *.log 28 | 29 | # Android Studio Navigation editor temp files 30 | .navigation/ 31 | 32 | # Android Studio captures folder 33 | captures/ 34 | 35 | # Intellij 36 | *.iml 37 | .idea/workspace.xml 38 | .idea/tasks.xml 39 | .idea/gradle.xml 40 | .idea/dictionaries 41 | .idea/libraries 42 | 43 | # Android Studio 44 | *.iml 45 | .idea 46 | 47 | # Keystore files 48 | *.jks 49 | 50 | # External native build folder generated in Android Studio 2.2 and later 51 | .externalNativeBuild 52 | 53 | # Google Services (e.g. APIs or Firebase) 54 | google-services.json 55 | 56 | # Freeline 57 | freeline.py 58 | freeline/ 59 | freeline_project_description.json -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2017 Sagar Viradiya 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 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | [![License](https://img.shields.io/badge/License-MIT-blue.svg)](https://github.com/sagar-viradiya/AndroidPhysicsAnimation/blob/master/LICENSE) [![Kotlin Weekly](https://img.shields.io/badge/Kotlin%20Weekly-%2363-blue.svg)](https://mailchi.mp/kotlinweekly/kotlin-weekly-63?e=c1747840c3) 2 | 3 | # Android physics based animation 4 | Sample app demonstrating android physics based animation. Covers Spring animation, Fling animation and Chain spring animation. 5 | For more information head over to my [medium article.](https://android.jlelse.eu/android-physics-based-animation-cf0cc125830f) 6 | 7 | ## Spring Animation 8 | ![alt text](https://media.giphy.com/media/xT39Dn9zedyTuFjuzm/giphy.gif "Spring animation") 9 | 10 | 11 | ## Fling Animation 12 | ![alt text](https://media.giphy.com/media/l41JWvM5IDJQND7jO/giphy.gif "Fling animation") 13 | 14 | 15 | ## Chain spring animation 16 | ![alt text](https://media.giphy.com/media/l41JMyczEqmDjEHAc/giphy.gif "Chain animation") 17 | 18 | 19 | ## LICENSE 20 | 21 | ``` 22 | MIT License 23 | 24 | Copyright (c) 2017 Sagar Viradiya 25 | 26 | Permission is hereby granted, free of charge, to any person obtaining a copy 27 | of this software and associated documentation files (the "Software"), to deal 28 | in the Software without restriction, including without limitation the rights 29 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 30 | copies of the Software, and to permit persons to whom the Software is 31 | furnished to do so, subject to the following conditions: 32 | 33 | The above copyright notice and this permission notice shall be included in all 34 | copies or substantial portions of the Software. 35 | 36 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 37 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 38 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 39 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 40 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 41 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 42 | SOFTWARE. 43 | ``` 44 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | apply plugin: 'kotlin-android' 4 | 5 | apply plugin: 'kotlin-android-extensions' 6 | 7 | android { 8 | compileSdkVersion rootProject.compileSdkVersion 9 | defaultConfig { 10 | applicationId "com.example.sagar.physicsanimation" 11 | minSdkVersion rootProject.minSdkVersion 12 | targetSdkVersion rootProject.targetSdkVersion 13 | versionCode 2 14 | versionName "1.1" 15 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 16 | 17 | //support for vectors for backward compatibility 18 | vectorDrawables.useSupportLibrary = true 19 | } 20 | buildTypes { 21 | release { 22 | minifyEnabled false 23 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 24 | } 25 | } 26 | compileOptions { 27 | sourceCompatibility JavaVersion.VERSION_1_8 28 | targetCompatibility JavaVersion.VERSION_1_8 29 | } 30 | } 31 | 32 | dependencies { 33 | implementation fileTree(dir: 'libs', include: ['*.jar']) 34 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$rootProject.kotlinVersion" 35 | implementation "com.android.support:appcompat-v7:$rootProject.supportLibraryVersion" 36 | implementation "com.android.support:design:$rootProject.supportLibraryVersion" 37 | implementation "com.android.support:support-dynamic-animation:$rootProject.supportLibraryVersion" 38 | implementation "com.android.support.constraint:constraint-layout:$rootProject.constraintLayoutVersion" 39 | implementation "com.android.support:support-v4:$rootProject.supportLibraryVersion" 40 | implementation "android.arch.navigation:navigation-fragment-ktx:$rootProject.navigationVersion" 41 | implementation "android.arch.navigation:navigation-ui-ktx:$rootProject.navigationVersion" 42 | testImplementation "junit:junit:$rootProject.junitVersion" 43 | androidTestImplementation "com.android.support.test:runner:$rootProject.runnerVersion" 44 | androidTestImplementation "com.android.support.test.espresso:espresso-core:$rootProject.espressoVersion" 45 | } 46 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /Users/sagar/Library/Android/sdk/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | 19 | # Uncomment this to preserve the line number information for 20 | # debugging stack traces. 21 | #-keepattributes SourceFile,LineNumberTable 22 | 23 | # If you keep the line number information, uncomment this to 24 | # hide the original source file name. 25 | #-renamesourcefileattribute SourceFile 26 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/example/sagar/physicsanimation/ExampleInstrumentedTest.kt: -------------------------------------------------------------------------------- 1 | package com.example.sagar.physicsanimation 2 | 3 | import android.support.test.InstrumentationRegistry 4 | import android.support.test.runner.AndroidJUnit4 5 | 6 | import org.junit.Test 7 | import org.junit.runner.RunWith 8 | 9 | import org.junit.Assert.* 10 | 11 | /** 12 | * Instrumented test, which will execute on an Android device. 13 | * 14 | * See [testing documentation](http://d.android.com/tools/testing). 15 | */ 16 | @RunWith(AndroidJUnit4::class) 17 | class ExampleInstrumentedTest { 18 | @Test 19 | fun useAppContext() { 20 | // Context of the app under test. 21 | val appContext = InstrumentationRegistry.getTargetContext() 22 | assertEquals("com.example.sagar.physicsanimation", appContext.packageName) 23 | } 24 | } 25 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/sagar/physicsanimation/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package com.example.sagar.physicsanimation 2 | 3 | import android.support.v7.app.AppCompatActivity 4 | import android.os.Bundle 5 | import android.support.v7.app.ActionBarDrawerToggle 6 | import android.support.v7.widget.Toolbar 7 | import androidx.navigation.Navigation 8 | import androidx.navigation.ui.setupWithNavController 9 | import kotlinx.android.synthetic.main.activity_main.* 10 | 11 | class MainActivity : AppCompatActivity() { 12 | 13 | override fun onCreate(savedInstanceState: Bundle?) { 14 | super.onCreate(savedInstanceState) 15 | setContentView(R.layout.activity_main) 16 | setupToolbar() 17 | setupNavigationDrawer(toolbar) 18 | } 19 | 20 | private fun setupToolbar() { 21 | toolbar.title = "" 22 | setSupportActionBar(toolbar) 23 | 24 | } 25 | 26 | private fun setupNavigationDrawer(toolbar: Toolbar) { 27 | val actionBarDrawerToggle = object : ActionBarDrawerToggle(this, drawer_layout, toolbar, 28 | R.string.open_drawer, R.string.close_drawer){} 29 | drawer_layout.addDrawerListener(actionBarDrawerToggle) 30 | actionBarDrawerToggle.syncState() 31 | val navController = Navigation.findNavController(this, R.id.physics_animation_nav_fragment) 32 | navigation_view.setupWithNavController(navController) 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/sagar/physicsanimation/chainanimation/ChainAnimationFragment.kt: -------------------------------------------------------------------------------- 1 | package com.example.sagar.physicsanimation.chainanimation 2 | 3 | 4 | import android.os.Bundle 5 | import android.support.animation.DynamicAnimation 6 | import android.support.animation.FloatPropertyCompat 7 | import android.support.animation.SpringAnimation 8 | import android.support.animation.SpringForce.DAMPING_RATIO_MEDIUM_BOUNCY 9 | import android.support.animation.SpringForce.STIFFNESS_MEDIUM 10 | import android.support.v4.app.Fragment 11 | import android.view.LayoutInflater 12 | import android.view.MotionEvent 13 | import android.view.View 14 | import android.view.ViewGroup 15 | 16 | import com.example.sagar.physicsanimation.R 17 | import com.example.sagar.physicsanimation.utils.springAnimationOf 18 | import com.example.sagar.physicsanimation.utils.withSpringForceProperties 19 | import kotlinx.android.synthetic.main.fragment_chain_animation.* 20 | 21 | 22 | /** 23 | * A simple [Fragment] subclass. 24 | */ 25 | class ChainAnimationFragment : Fragment() { 26 | 27 | private val firstSpringAnimationX by lazy(LazyThreadSafetyMode.NONE) { 28 | createSpringAnimation(android_bot1, DynamicAnimation.TRANSLATION_X) 29 | } 30 | 31 | private val firstSpringAnimationY by lazy(LazyThreadSafetyMode.NONE) { 32 | createSpringAnimation(android_bot1, DynamicAnimation.TRANSLATION_Y) 33 | } 34 | 35 | private val secondSpringAnimationX by lazy(LazyThreadSafetyMode.NONE) { 36 | createSpringAnimation(android_bot2, DynamicAnimation.TRANSLATION_X) 37 | } 38 | 39 | private val secondSpringAnimationY by lazy(LazyThreadSafetyMode.NONE) { 40 | createSpringAnimation(android_bot2, DynamicAnimation.TRANSLATION_Y) 41 | } 42 | 43 | var lastX: Float = 0f 44 | var lastY: Float = 0f 45 | 46 | override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, 47 | savedInstanceState: Bundle?): View? { 48 | // Inflate the layout for this fragment 49 | return inflater.inflate(R.layout.fragment_chain_animation, container, false) 50 | } 51 | 52 | override fun onViewCreated(view: View, savedInstanceState: Bundle?) { 53 | super.onViewCreated(view, savedInstanceState) 54 | setupOnTouchListener() 55 | 56 | } 57 | 58 | private fun setupOnTouchListener() { 59 | 60 | firstSpringAnimationX.addUpdateListener { _, value, _ -> 61 | secondSpringAnimationX.animateToFinalPosition(value) 62 | } 63 | 64 | firstSpringAnimationY.addUpdateListener { _, value, _ -> 65 | secondSpringAnimationY.animateToFinalPosition(value) 66 | } 67 | 68 | android_bot.setOnTouchListener { view, motionEvent -> 69 | 70 | if(motionEvent.action == MotionEvent.ACTION_MOVE) { 71 | 72 | val deltaX = motionEvent.rawX - lastX 73 | val deltaY = motionEvent.rawY - lastY 74 | 75 | view.translationX = deltaX + view.translationX 76 | view.translationY = deltaY + view.translationY 77 | 78 | firstSpringAnimationX.animateToFinalPosition(view.translationX) 79 | firstSpringAnimationY.animateToFinalPosition(view.translationY) 80 | 81 | } 82 | 83 | lastX = motionEvent.rawX 84 | lastY = motionEvent.rawY 85 | 86 | return@setOnTouchListener true 87 | } 88 | } 89 | 90 | private fun createSpringAnimation(view: K, property: FloatPropertyCompat): SpringAnimation { 91 | return view.springAnimationOf(property).withSpringForceProperties { 92 | stiffness = STIFFNESS_MEDIUM 93 | dampingRatio = DAMPING_RATIO_MEDIUM_BOUNCY 94 | } 95 | } 96 | 97 | } 98 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/sagar/physicsanimation/flinganimation/FlingAnimationFragment.kt: -------------------------------------------------------------------------------- 1 | package com.example.sagar.physicsanimation.flinganimation 2 | 3 | 4 | import android.graphics.Point 5 | import android.os.Bundle 6 | import android.support.animation.DynamicAnimation 7 | import android.support.animation.FlingAnimation 8 | import android.support.v4.app.Fragment 9 | import android.view.* 10 | 11 | import com.example.sagar.physicsanimation.R 12 | import com.example.sagar.physicsanimation.utils.afterMeasured 13 | import com.example.sagar.physicsanimation.utils.flingAnimationOf 14 | import kotlinx.android.synthetic.main.fragment_fling_animation.* 15 | import kotlin.properties.Delegates 16 | 17 | 18 | /** 19 | * A simple [Fragment] subclass. 20 | */ 21 | class FlingAnimationFragment : Fragment() { 22 | 23 | private val screenSize by lazy(LazyThreadSafetyMode.NONE) { 24 | val size = Point() 25 | requireActivity().windowManager.defaultDisplay.getSize(size) 26 | size 27 | } 28 | 29 | val flingAnimationX: FlingAnimation by lazy(LazyThreadSafetyMode.NONE) { 30 | android_bot.flingAnimationOf(DynamicAnimation.X) 31 | } 32 | 33 | val flingAnimationY: FlingAnimation by lazy(LazyThreadSafetyMode.NONE) { 34 | android_bot.flingAnimationOf(DynamicAnimation.Y) 35 | } 36 | 37 | var friction: Float by Delegates.observable(1f) { 38 | _, _, new -> 39 | flingAnimationX.friction = new 40 | flingAnimationY.friction = new 41 | } 42 | 43 | private val gestureListener = object : GestureDetector.SimpleOnGestureListener() { 44 | 45 | override fun onDown(e: MotionEvent?): Boolean { 46 | return true 47 | } 48 | 49 | override fun onFling(e1: MotionEvent?, e2: MotionEvent?, velocityX: Float, velocityY: Float): Boolean { 50 | 51 | flingAnimationX.setStartVelocity(velocityX) 52 | flingAnimationY.setStartVelocity(velocityY) 53 | 54 | flingAnimationX.start() 55 | flingAnimationY.start() 56 | 57 | return true 58 | } 59 | } 60 | 61 | override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, 62 | savedInstanceState: Bundle?): View? { 63 | // Inflate the layout for this fragment 64 | return inflater.inflate(R.layout.fragment_fling_animation, container, false) 65 | } 66 | 67 | 68 | override fun onViewCreated(view: View, savedInstanceState: Bundle?) { 69 | 70 | flingAnimationX.addEndListener { animation, canceled, value, velocity -> 71 | if(flingAnimationY.isRunning) flingAnimationY.cancel() 72 | } 73 | 74 | flingAnimationY.addEndListener { animation, canceled, value, velocity -> 75 | if(flingAnimationX.isRunning) flingAnimationX.cancel() 76 | } 77 | 78 | android_bot.afterMeasured { 79 | flingAnimationX.setMinValue(0f) 80 | .setMaxValue((screenSize.x - width).toFloat()) 81 | .setFriction(2.2f) 82 | flingAnimationY.setMinValue(0f) 83 | .setMaxValue((screenSize.y - height).toFloat()) 84 | .setFriction(2.2f) 85 | } 86 | 87 | 88 | val gestureDetector = GestureDetector(context, gestureListener) 89 | 90 | android_bot.setOnTouchListener { _, motionEvent -> 91 | gestureDetector.onTouchEvent(motionEvent) 92 | } 93 | 94 | } 95 | 96 | 97 | } 98 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/sagar/physicsanimation/springanimation/SpringAnimationFragment.kt: -------------------------------------------------------------------------------- 1 | package com.example.sagar.physicsanimation.springanimation 2 | 3 | 4 | import android.os.Bundle 5 | import android.support.animation.DynamicAnimation 6 | import android.support.animation.SpringAnimation 7 | import android.support.animation.SpringForce 8 | import android.support.v4.app.Fragment 9 | import android.view.LayoutInflater 10 | import android.view.MotionEvent 11 | import android.view.View 12 | import android.view.ViewGroup 13 | 14 | import com.example.sagar.physicsanimation.R 15 | import com.example.sagar.physicsanimation.utils.springAnimationOf 16 | import kotlinx.android.synthetic.main.fragment_spring_animation.* 17 | 18 | 19 | /** 20 | * A simple [Fragment] subclass. 21 | */ 22 | class SpringAnimationFragment : Fragment() { 23 | 24 | private val springForce: SpringForce by lazy(LazyThreadSafetyMode.NONE) { 25 | SpringForce(0f).apply { 26 | stiffness = SpringForce.STIFFNESS_MEDIUM 27 | dampingRatio = SpringForce.DAMPING_RATIO_HIGH_BOUNCY 28 | } 29 | } 30 | 31 | private val springAnimationTranslationX: SpringAnimation by lazy(LazyThreadSafetyMode.NONE) { 32 | android_bot.springAnimationOf(DynamicAnimation.TRANSLATION_X).setSpring(springForce) 33 | } 34 | 35 | private val springAnimationTranslationY: SpringAnimation by lazy(LazyThreadSafetyMode.NONE) { 36 | android_bot.springAnimationOf(DynamicAnimation.TRANSLATION_Y).setSpring(springForce) 37 | } 38 | 39 | var xDiffInTouchPointAndViewTopLeftCorner: Float = -1f 40 | var yDiffInTouchPointAndViewTopLeftCorner: Float = -1f 41 | 42 | 43 | override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, 44 | savedInstanceState: Bundle?): View? { 45 | // Inflate the layout for this fragment 46 | return inflater.inflate(R.layout.fragment_spring_animation, container, false) 47 | } 48 | 49 | override fun onViewCreated(view: View, savedInstanceState: Bundle?) { 50 | setupTouchListener() 51 | } 52 | 53 | private fun setupSpringForce(stiffness: Float = SpringForce.STIFFNESS_MEDIUM, 54 | dampingRatio: Float = SpringForce.DAMPING_RATIO_HIGH_BOUNCY) { 55 | springForce.stiffness = stiffness 56 | springForce.dampingRatio = dampingRatio 57 | } 58 | 59 | private fun setupTouchListener() { 60 | 61 | android_bot.setOnTouchListener { view, motionEvent -> 62 | 63 | when(motionEvent?.action) { 64 | 65 | MotionEvent.ACTION_DOWN -> { 66 | xDiffInTouchPointAndViewTopLeftCorner = motionEvent.rawX - view.x 67 | yDiffInTouchPointAndViewTopLeftCorner = motionEvent.rawY - view.y 68 | 69 | springAnimationTranslationX.cancel() 70 | springAnimationTranslationY.cancel() 71 | } 72 | 73 | MotionEvent.ACTION_MOVE -> { 74 | android_bot.x = motionEvent.rawX - xDiffInTouchPointAndViewTopLeftCorner 75 | android_bot.y = motionEvent.rawY - yDiffInTouchPointAndViewTopLeftCorner 76 | } 77 | 78 | MotionEvent.ACTION_UP -> { 79 | springAnimationTranslationX.start() 80 | springAnimationTranslationY.start() 81 | } 82 | } 83 | 84 | true 85 | } 86 | } 87 | } 88 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/sagar/physicsanimation/utils/PhysicsAnimationExtensions.kt: -------------------------------------------------------------------------------- 1 | package com.example.sagar.physicsanimation.utils 2 | 3 | import android.support.animation.FlingAnimation 4 | import android.support.animation.FloatPropertyCompat 5 | import android.support.animation.SpringAnimation 6 | import android.support.animation.SpringForce 7 | 8 | fun K.flingAnimationOf(property: FloatPropertyCompat): FlingAnimation { 9 | return FlingAnimation(this, property) 10 | } 11 | 12 | fun K.springAnimationOf( 13 | property: FloatPropertyCompat, 14 | finalPosition: Float = Float.NaN 15 | ): SpringAnimation { 16 | return if (finalPosition.isNaN()) { 17 | SpringAnimation(this, property) 18 | } else { 19 | SpringAnimation(this, property, finalPosition) 20 | } 21 | } 22 | 23 | inline fun SpringAnimation.withSpringForceProperties(func: SpringForce.() -> Unit): SpringAnimation { 24 | if (spring == null) { 25 | spring = SpringForce() 26 | } 27 | spring.func() 28 | return this 29 | } -------------------------------------------------------------------------------- /app/src/main/java/com/example/sagar/physicsanimation/utils/Utils.kt: -------------------------------------------------------------------------------- 1 | @file:JvmName("Utils") 2 | 3 | package com.example.sagar.physicsanimation.utils 4 | 5 | import android.support.animation.FlingAnimation 6 | import android.support.animation.FloatPropertyCompat 7 | import android.support.animation.SpringAnimation 8 | import android.support.animation.SpringForce 9 | import android.view.View 10 | import android.view.ViewTreeObserver 11 | 12 | /** 13 | * Created by sagar on 07/08/17. 14 | */ 15 | 16 | inline fun T.afterMeasured(crossinline func: T.() -> Unit) { 17 | viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener { 18 | override fun onGlobalLayout() { 19 | func() 20 | viewTreeObserver.removeOnGlobalLayoutListener(this) 21 | } 22 | }) 23 | } 24 | 25 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_android.xml: -------------------------------------------------------------------------------- 1 | 6 | 9 | 10 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 12 | 17 | 22 | 27 | 32 | 37 | 42 | 47 | 52 | 57 | 62 | 67 | 72 | 77 | 82 | 87 | 92 | 97 | 102 | 107 | 112 | 113 | 114 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 10 | 11 | 15 | 16 | 23 | 24 | 29 | 30 | 31 | 32 | 33 | 41 | 42 | 43 | 44 | 45 | -------------------------------------------------------------------------------- /app/src/main/res/layout/drawer_header_layout.xml: -------------------------------------------------------------------------------- 1 | 2 | 6 | 7 | 15 | 16 | -------------------------------------------------------------------------------- /app/src/main/res/layout/fragment_chain_animation.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 17 | 18 | 27 | 28 | 37 | 38 | 39 | -------------------------------------------------------------------------------- /app/src/main/res/layout/fragment_fling_animation.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 9 | 15 | 16 | 17 | 18 | -------------------------------------------------------------------------------- /app/src/main/res/layout/fragment_spring_animation.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /app/src/main/res/menu/drawer_menu.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 9 | 12 | 15 | 16 | 17 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- 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7 | 8 | 13 | 18 | 23 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #FAFAFA 4 | #C7C7C7 5 | #424242 6 | #000000 7 | #FFFFFF 8 | 9 | -------------------------------------------------------------------------------- /app/src/main/res/values/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 192dp 4 | 16dp 5 | 72dp 6 | 96dp 7 | 80dp 8 | 64dp 9 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | PhysicsAnimation 4 | F = M * A 5 | Fling Animation 6 | Spring Animation 7 | Chain Animation 8 | Open 9 | Close 10 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/test/java/com/example/sagar/physicsanimation/ExampleUnitTest.kt: -------------------------------------------------------------------------------- 1 | package com.example.sagar.physicsanimation 2 | 3 | import org.junit.Test 4 | 5 | import org.junit.Assert.* 6 | 7 | /** 8 | * Example local unit test, which will execute on the development machine (host). 9 | * 10 | * See [testing documentation](http://d.android.com/tools/testing). 11 | */ 12 | class ExampleUnitTest { 13 | @Test 14 | fun addition_isCorrect() { 15 | assertEquals(4, 2 + 2) 16 | } 17 | } 18 | -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | // Top-level build file where you can add configuration options common to all sub-projects/modules. 2 | 3 | buildscript { 4 | 5 | // Define versions in a single place 6 | ext { 7 | // Sdk and tools 8 | compileSdkVersion = 28 9 | minSdkVersion = 19 10 | targetSdkVersion = 28 11 | 12 | // App dependencies 13 | constraintLayoutVersion = '1.1.3' 14 | espressoVersion = '3.0.2' 15 | gradleVersion = '3.2.0-rc02' 16 | junitVersion = '4.12' 17 | navigationVersion = '1.0.0-alpha06' 18 | kotlinVersion = '1.2.70' 19 | runnerVersion = '1.0.2' 20 | supportLibraryVersion = '28.0.0' 21 | } 22 | 23 | repositories { 24 | google() 25 | jcenter() 26 | } 27 | dependencies { 28 | classpath "com.android.tools.build:gradle:$gradleVersion" 29 | classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion" 30 | 31 | // NOTE: Do not place your application dependencies here; they belong 32 | // in the individual module build.gradle files 33 | } 34 | } 35 | 36 | allprojects { 37 | repositories { 38 | google() 39 | jcenter() 40 | } 41 | } 42 | 43 | task clean(type: Delete) { 44 | delete rootProject.buildDir 45 | } 46 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | 3 | # IDE (e.g. Android Studio) users: 4 | # Gradle settings configured through the IDE *will override* 5 | # any settings specified in this file. 6 | 7 | # For more details on how to configure your build environment visit 8 | # http://www.gradle.org/docs/current/userguide/build_environment.html 9 | 10 | # Specifies the JVM arguments used for the daemon process. 11 | # The setting is particularly useful for tweaking memory settings. 12 | org.gradle.jvmargs=-Xmx1536m 13 | 14 | # When configured, Gradle will run in incubating parallel mode. 15 | # This option should only be used with decoupled projects. More details, visit 16 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 17 | # org.gradle.parallel=true 18 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/sagar-viradiya/AndroidPhysicsAnimation/c56d46cc4d9fd4a788a1635ce003996d6988ce98/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Thu Nov 30 16:46:24 IST 2017 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-4.8-all.zip 7 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 10 | DEFAULT_JVM_OPTS="" 11 | 12 | APP_NAME="Gradle" 13 | APP_BASE_NAME=`basename "$0"` 14 | 15 | # Use the maximum available, or set MAX_FD != -1 to use that value. 16 | MAX_FD="maximum" 17 | 18 | warn ( ) { 19 | echo "$*" 20 | } 21 | 22 | die ( ) { 23 | echo 24 | echo "$*" 25 | echo 26 | exit 1 27 | } 28 | 29 | # OS specific support (must be 'true' or 'false'). 30 | cygwin=false 31 | msys=false 32 | darwin=false 33 | case "`uname`" in 34 | CYGWIN* ) 35 | cygwin=true 36 | ;; 37 | Darwin* ) 38 | darwin=true 39 | ;; 40 | MINGW* ) 41 | msys=true 42 | ;; 43 | esac 44 | 45 | # Attempt to set APP_HOME 46 | # Resolve links: $0 may be a link 47 | PRG="$0" 48 | # Need this for relative symlinks. 49 | while [ -h "$PRG" ] ; do 50 | ls=`ls -ld "$PRG"` 51 | link=`expr "$ls" : '.*-> \(.*\)$'` 52 | if expr "$link" : '/.*' > /dev/null; then 53 | PRG="$link" 54 | else 55 | PRG=`dirname "$PRG"`"/$link" 56 | fi 57 | done 58 | SAVED="`pwd`" 59 | cd "`dirname \"$PRG\"`/" >/dev/null 60 | APP_HOME="`pwd -P`" 61 | cd "$SAVED" >/dev/null 62 | 63 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 64 | 65 | # Determine the Java command to use to start the JVM. 66 | if [ -n "$JAVA_HOME" ] ; then 67 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 68 | # IBM's JDK on AIX uses strange locations for the executables 69 | JAVACMD="$JAVA_HOME/jre/sh/java" 70 | else 71 | JAVACMD="$JAVA_HOME/bin/java" 72 | fi 73 | if [ ! -x "$JAVACMD" ] ; then 74 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 75 | 76 | Please set the JAVA_HOME variable in your environment to match the 77 | location of your Java installation." 78 | fi 79 | else 80 | JAVACMD="java" 81 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 82 | 83 | Please set the JAVA_HOME variable in your environment to match the 84 | location of your Java installation." 85 | fi 86 | 87 | # Increase the maximum file descriptors if we can. 88 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 89 | MAX_FD_LIMIT=`ulimit -H -n` 90 | if [ $? -eq 0 ] ; then 91 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 92 | MAX_FD="$MAX_FD_LIMIT" 93 | fi 94 | ulimit -n $MAX_FD 95 | if [ $? -ne 0 ] ; then 96 | warn "Could not set maximum file descriptor limit: $MAX_FD" 97 | fi 98 | else 99 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 100 | fi 101 | fi 102 | 103 | # For Darwin, add options to specify how the application appears in the dock 104 | if $darwin; then 105 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 106 | fi 107 | 108 | # For Cygwin, switch paths to Windows format before running java 109 | if $cygwin ; then 110 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 111 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 112 | JAVACMD=`cygpath --unix "$JAVACMD"` 113 | 114 | # We build the pattern for arguments to be converted via cygpath 115 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 116 | SEP="" 117 | for dir in $ROOTDIRSRAW ; do 118 | ROOTDIRS="$ROOTDIRS$SEP$dir" 119 | SEP="|" 120 | done 121 | OURCYGPATTERN="(^($ROOTDIRS))" 122 | # Add a user-defined pattern to the cygpath arguments 123 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 124 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 125 | fi 126 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 127 | i=0 128 | for arg in "$@" ; do 129 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 130 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 131 | 132 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 133 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 134 | else 135 | eval `echo args$i`="\"$arg\"" 136 | fi 137 | i=$((i+1)) 138 | done 139 | case $i in 140 | (0) set -- ;; 141 | (1) set -- "$args0" ;; 142 | (2) set -- "$args0" "$args1" ;; 143 | (3) set -- "$args0" "$args1" "$args2" ;; 144 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 145 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 146 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 147 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 148 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 149 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 150 | esac 151 | fi 152 | 153 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 154 | function splitJvmOpts() { 155 | JVM_OPTS=("$@") 156 | } 157 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 158 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 159 | 160 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 161 | -------------------------------------------------------------------------------- /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 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 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 Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | --------------------------------------------------------------------------------