├── .gitignore ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── sofakingforever │ │ └── animatedstarsview │ │ └── ExampleInstrumentedTest.kt │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── sofakingforever │ │ │ └── animatedstarsview │ │ │ └── MainActivity.kt │ └── res │ │ ├── drawable-v24 │ │ └── ic_launcher_foreground.xml │ │ ├── drawable │ │ ├── gradient_night_sky.xml │ │ └── ic_launcher_background.xml │ │ ├── layout │ │ └── activity_main.xml │ │ ├── mipmap-anydpi-v26 │ │ ├── ic_launcher.xml │ │ └── ic_launcher_round.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 │ │ └── values │ │ ├── arrays.xml │ │ ├── colors.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── sofakingforever │ └── animatedstarsview │ └── ExampleUnitTest.kt ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── screenshot.png ├── settings.gradle └── stars ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src ├── androidTest └── java │ └── com │ └── sofakingforever │ └── stars │ └── ExampleInstrumentedTest.java ├── main ├── AndroidManifest.xml ├── java │ └── com │ │ └── sofakingforever │ │ └── stars │ │ ├── AnimatedStarsView.kt │ │ └── entities │ │ ├── InterstellarFactory.kt │ │ ├── Star.kt │ │ ├── StarConstraints.kt │ │ ├── meteor │ │ └── Meteorite.kt │ │ └── stars │ │ ├── BaseStar.kt │ │ ├── RoundyStar.kt │ │ ├── ShinyStar.kt │ │ └── TinyStar.kt └── res │ └── values │ ├── attrs_stars.xml │ └── strings.xml └── test └── java └── com └── sofakingforever └── stars └── ExampleUnitTest.java /.gitignore: -------------------------------------------------------------------------------- 1 | # Built application files 2 | *.apk 3 | *.ap_ 4 | 5 | # Files for the Dalvik VM 6 | *.dex 7 | 8 | # Java class files 9 | *.class 10 | 11 | # Generated files 12 | bin/ 13 | gen/ 14 | 15 | # Gradle files 16 | .gradle/ 17 | build/ 18 | 19 | # Local configuration file (sdk path, etc) 20 | local.properties 21 | 22 | # Proguard folder generated by Eclipse 23 | proguard/ 24 | 25 | # Log Files 26 | *.log 27 | 28 | # Android Studio Navigation editor temp files 29 | .navigation/ 30 | 31 | # Android Studio captures folder 32 | captures/ 33 | 34 | \.idea/ 35 | 36 | *.iml 37 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | [![Android Arsenal]( https://img.shields.io/badge/Android%20Arsenal-animated--stars--android-green.svg?style=flat )]( https://android-arsenal.com/details/1/7202 ) 2 | 3 | # AnimatedStarsView for Android 4 | 5 | Kotlin Android view that draws animated stars on a canvas 6 | 7 | 8 | ### Preview (Click for video) 9 | [![Stars](https://github.com/sofakingforever/animated-stars-android/blob/master/screenshot.png?raw=true)](http://www.youtube.com/watch?v=mpwT7fZcn10) 10 | 11 | 12 | ## Quick Start Guide 13 | 14 | ### Step 1 15 | Add library to your gradle module 16 | 17 | ```gradle 18 | repositories { 19 | maven { url "http://dl.bintray.com/sofakingforever/libraries" } 20 | } 21 | 22 | dependencies { 23 | implementation 'com.sofakingforever.libraries:animated-stars-android:1.1.4@aar' 24 | 25 | // Don't forget to add kotlin if you're in a pure-java project (thanks to moisoni97) 26 | implementation 'org.jetbrains.kotlin:kotlin-stdlib:1.2.71 27 | } 28 | ``` 29 | 30 | ### Step 2 31 | Insert View via XML (or code) 32 | 33 | ```xml 34 | 35 | 47 | ``` 48 | 49 | ### Step 3 50 | Add the color array 51 | ```xml 52 | 53 | 54 | @color/star_color_1 55 | @color/star_color_1 56 | @color/star_color_1 57 | @color/star_color_1 58 | @color/star_color_2 59 | @color/star_color_3 60 | 61 | 62 | 63 | 64 | 65 | @color/star_color_2 66 | @color/star_color_4 67 | @color/star_color_3 68 | 69 | 70 | ``` 71 | 72 | ### Step 4 73 | Kotlin Implementation Example - Call `onStart` and `onStop` 74 | ```kotlin 75 | 76 | override fun onStart() { 77 | super.onStart() 78 | stars.onStart() 79 | } 80 | 81 | override fun onStop() { 82 | stars.onStop() 83 | super.onStop() 84 | } 85 | ``` 86 | ### DONE! 87 | 88 | ### Originally developed for [Wakey - Beautiful Alarm Clock](https://wakey.app/?ref=github) 89 | 90 | Wakey is a simple & beautiful animated alarm clock, featuring a spectacular design and an immersive experience - guaranteed to wake you up with a smile everyday! 91 | 92 | With our smiling sunrise, and grumpy lunar animations, this is the most unique alarm clock in our solar system. 93 | 94 | ![Wakey Alarm Clock](https://cdn-images-1.medium.com/max/2000/1*DhcklS1xNZwHogX0wDQEyw.png) 95 | 96 | License 97 | ------- 98 | 99 | Licensed under the Apache License, Version 2.0 (the "License"); 100 | you may not use this file except in compliance with the License. 101 | You may obtain a copy of the License at 102 | 103 | http://www.apache.org/licenses/LICENSE-2.0 104 | 105 | Unless required by applicable law or agreed to in writing, software 106 | distributed under the License is distributed on an "AS IS" BASIS, 107 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 108 | See the License for the specific language governing permissions and 109 | limitations under the License. 110 | 111 | -------------------------------------------------------------------------------- /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 28 9 | defaultConfig { 10 | applicationId "com.sofakingforever.animatedstarsview" 11 | minSdkVersion 21 12 | targetSdkVersion 28 13 | versionCode 1 14 | versionName "1.0" 15 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 16 | } 17 | buildTypes { 18 | release { 19 | minifyEnabled false 20 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 21 | } 22 | } 23 | } 24 | 25 | dependencies { 26 | implementation fileTree(include: ['*.jar'], dir: 'libs') 27 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 28 | implementation 'com.android.support:appcompat-v7:28.0.0' 29 | implementation 'com.android.support.constraint:constraint-layout:1.1.3' 30 | testImplementation 'junit:junit:4.12' 31 | androidTestImplementation 'com.android.support.test:runner:1.0.2' 32 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' 33 | implementation project(':stars') 34 | } 35 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/sofakingforever/animatedstarsview/ExampleInstrumentedTest.kt: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.animatedstarsview 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.sofakingforever.animatedstarsview", 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/sofakingforever/animatedstarsview/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.animatedstarsview 2 | 3 | import android.support.v7.app.AppCompatActivity 4 | import android.os.Bundle 5 | import kotlinx.android.synthetic.main.activity_main.* 6 | 7 | class MainActivity : AppCompatActivity() { 8 | 9 | override fun onCreate(savedInstanceState: Bundle?) { 10 | super.onCreate(savedInstanceState) 11 | setContentView(R.layout.activity_main) 12 | 13 | 14 | } 15 | 16 | override fun onStart() { 17 | super.onStart() 18 | 19 | stars_white.onStart() 20 | stars.onStart() 21 | } 22 | 23 | override fun onStop() { 24 | 25 | stars_white.onStop() 26 | stars.onStop() 27 | 28 | super.onStop() 29 | } 30 | } 31 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 12 | 13 | 19 | 22 | 25 | 26 | 27 | 28 | 34 | 35 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/gradient_night_sky.xml: -------------------------------------------------------------------------------- 1 | 2 | 6 | 11 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 9 | 10 | 22 | 23 | 24 | 34 | -------------------------------------------------------------------------------- /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: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/sofakingforever/animated-stars-android/d85bf1fd8b2e0b5f2384fc1b94e83f97752ff9d4/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/sofakingforever/animated-stars-android/d85bf1fd8b2e0b5f2384fc1b94e83f97752ff9d4/app/src/main/res/mipmap-hdpi/ic_launcher_round.png 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https://raw.githubusercontent.com/sofakingforever/animated-stars-android/d85bf1fd8b2e0b5f2384fc1b94e83f97752ff9d4/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/values/arrays.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | @color/star_color_1 10 | @color/star_color_1 11 | @color/star_color_1 12 | @color/star_color_1 13 | @color/star_color_2 14 | @color/star_color_3 15 | 16 | 17 | 18 | 19 | 20 | 21 | @color/star_color_2 22 | @color/star_color_4 23 | @color/star_color_3 24 | 25 | 26 | 27 | @color/star_color_1 28 | @color/star_color_2 29 | @color/star_color_1 30 | @color/star_color_1 31 | @color/star_color_1 32 | @color/star_color_3 33 | @color/star_color_1 34 | @color/star_color_1 35 | @color/star_color_4 36 | 37 | 38 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #3F51B5 4 | #303F9F 5 | #FF4081 6 | 7 | 8 | 9 | #ffffff 10 | #25ADFF 11 | #FFC100 12 | #FF3800 13 | 14 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | Animated Stars Example 3 | 4 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 12 | 13 | 14 | -------------------------------------------------------------------------------- /app/src/test/java/com/sofakingforever/animatedstarsview/ExampleUnitTest.kt: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.animatedstarsview 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 | ext.kotlin_version = '1.3.10' 5 | repositories { 6 | google() 7 | jcenter() 8 | } 9 | dependencies { 10 | classpath 'com.android.tools.build:gradle:3.2.1' 11 | classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" 12 | 13 | // NOTE: Do not place your application dependencies here; they belong 14 | // in the individual module build.gradle files 15 | } 16 | } 17 | 18 | allprojects { 19 | repositories { 20 | google() 21 | jcenter() 22 | } 23 | } 24 | 25 | task clean(type: Delete) { 26 | delete rootProject.buildDir 27 | } 28 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/sofakingforever/animated-stars-android/d85bf1fd8b2e0b5f2384fc1b94e83f97752ff9d4/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Sun Oct 14 03:02:00 IDT 2018 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-4.6-all.zip 7 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /screenshot.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/sofakingforever/animated-stars-android/d85bf1fd8b2e0b5f2384fc1b94e83f97752ff9d4/screenshot.png -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app', ':stars' 2 | -------------------------------------------------------------------------------- /stars/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /stars/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | apply plugin: 'kotlin-android' 3 | apply plugin: 'com.github.dcendents.android-maven' 4 | apply plugin: 'com.jfrog.bintray' 5 | 6 | buildscript { 7 | repositories { 8 | jcenter() 9 | } 10 | dependencies { 11 | 12 | 13 | classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4' 14 | classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1' 15 | 16 | } 17 | } 18 | 19 | def versionNameStr = "1.1.4" 20 | 21 | android { 22 | compileSdkVersion 28 23 | 24 | 25 | 26 | defaultConfig { 27 | minSdkVersion 21 28 | targetSdkVersion 28 29 | versionCode 113 30 | versionName versionNameStr 31 | 32 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 33 | 34 | } 35 | 36 | buildTypes { 37 | release { 38 | minifyEnabled false 39 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 40 | } 41 | } 42 | 43 | } 44 | 45 | dependencies { 46 | implementation fileTree(dir: 'libs', include: ['*.jar']) 47 | 48 | implementation 'com.android.support:appcompat-v7:28.0.0' 49 | testImplementation 'junit:junit:4.12' 50 | androidTestImplementation 'com.android.support.test:runner:1.0.2' 51 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' 52 | compile "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 53 | } 54 | repositories { 55 | mavenCentral() 56 | } 57 | 58 | ext { 59 | bintrayRepo = 'libraries' 60 | bintrayName = 'animated-stars-android' 61 | 62 | publishedGroupId = 'com.sofakingforever.libraries' 63 | artifact = 'animated-stars-android' 64 | libraryName = 'stars' 65 | libraryVersion = versionNameStr 66 | 67 | libraryDescription = 'This is a SOLID Kotlin Analytics Interface for Android.' 68 | 69 | siteUrl = 'https://github.com/sofakingforever/animated-stars-android' 70 | gitUrl = 'https://github.com/sofakingforever/animated-stars-android.git' 71 | 72 | 73 | developerId = 'sofakingforever' 74 | developerName = 'sofakingforever' 75 | developerEmail = 'sofakingforever@gmail.com' 76 | 77 | licenseName = 'The Apache Software License, Version 2.0' 78 | licenseUrl = 'http://www.apache.org/licenses/LICENSE-2.0.txt' 79 | allLicenses = ["Apache-2.0"] 80 | } 81 | group = publishedGroupId 82 | version = libraryVersion 83 | 84 | install { 85 | repositories.mavenInstaller { 86 | pom.project { 87 | packaging 'aar' 88 | groupId publishedGroupId 89 | artifactId artifact 90 | 91 | name libraryName 92 | description libraryDescription 93 | url siteUrl 94 | 95 | licenses { 96 | license { 97 | name licenseName 98 | url licenseUrl 99 | } 100 | } 101 | developers { 102 | developer { 103 | id developerId 104 | name developerName 105 | email developerEmail 106 | } 107 | } 108 | scm { 109 | connection gitUrl 110 | developerConnection gitUrl 111 | url siteUrl 112 | } 113 | } 114 | } 115 | } 116 | 117 | // Todo - Re-enable Javadocs and understand why it's causing trouble when compiling 118 | tasks.withType(Javadoc).all { 119 | enabled = false 120 | } 121 | task sourcesJar(type: Jar) { 122 | classifier = 'sources' 123 | from android.sourceSets.main.java.srcDirs 124 | } 125 | 126 | task javadoc(type: Javadoc) { 127 | source = android.sourceSets.main.java.srcDirs 128 | classpath += project.files(android.getBootClasspath().join(File.pathSeparator)) 129 | } 130 | 131 | task javadocJar(type: Jar, dependsOn: javadoc) { 132 | classifier = 'javadoc' 133 | from javadoc.destinationDir 134 | } 135 | 136 | artifacts { 137 | archives javadocJar 138 | archives sourcesJar 139 | } 140 | 141 | Properties properties = new Properties() 142 | properties.load(project.rootProject.file('local.properties').newDataInputStream()) 143 | 144 | bintray { 145 | user = properties.getProperty("bintray.user") 146 | key = properties.getProperty("bintray.apikey") 147 | 148 | configurations = ['archives'] 149 | pkg { 150 | repo = bintrayRepo 151 | name = bintrayName 152 | desc = libraryDescription 153 | websiteUrl = siteUrl 154 | vcsUrl = gitUrl 155 | licenses = allLicenses 156 | dryRun = false 157 | publish = true 158 | override = false 159 | publicDownloadNumbers = true 160 | version { 161 | desc = libraryDescription 162 | } 163 | } 164 | } 165 | -------------------------------------------------------------------------------- /stars/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 | -------------------------------------------------------------------------------- /stars/src/androidTest/java/com/sofakingforever/stars/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.stars; 2 | 3 | import android.content.Context; 4 | import android.support.test.InstrumentationRegistry; 5 | import android.support.test.runner.AndroidJUnit4; 6 | 7 | import org.junit.Test; 8 | import org.junit.runner.RunWith; 9 | 10 | import static org.junit.Assert.*; 11 | 12 | /** 13 | * Instrumented test, which will execute on an Android device. 14 | * 15 | * @see Testing documentation 16 | */ 17 | @RunWith(AndroidJUnit4.class) 18 | public class ExampleInstrumentedTest { 19 | @Test 20 | public void useAppContext() { 21 | // Context of the app under test. 22 | Context appContext = InstrumentationRegistry.getTargetContext(); 23 | 24 | assertEquals("com.sofakingforever.stars.test", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /stars/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | -------------------------------------------------------------------------------- /stars/src/main/java/com/sofakingforever/stars/AnimatedStarsView.kt: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.stars 2 | 3 | import android.content.Context 4 | import android.graphics.Canvas 5 | import android.util.AttributeSet 6 | import android.view.View 7 | import com.sofakingforever.stars.entities.InterstellarFactory 8 | import com.sofakingforever.stars.entities.Star 9 | import com.sofakingforever.stars.entities.StarConstraints 10 | import com.sofakingforever.stars.entities.stars.BaseStar 11 | import com.sofakingforever.stars.entities.meteor.Meteorite 12 | import java.util.* 13 | import java.util.concurrent.Executors 14 | import kotlin.concurrent.timerTask 15 | 16 | 17 | /** 18 | * Kotlin Android view that draws animated stars on a canvas 19 | * 20 | * Used in Wakey - Cute & Gentle Alarm Clock for Android: http://bit.ly/2uI8pgL 21 | * Check out the article on Medium: http://bit.ly/2NlFJBW 22 | * Or see what it looks like on YouTube: https://www.youtube.com/watch?v=v1-228CkoQc 23 | * 24 | * Crafted with ❤️ by sofakingforever 25 | */ 26 | class AnimatedStarsView 27 | @kotlin.jvm.JvmOverloads 28 | constructor( 29 | context: Context, 30 | attrs: AttributeSet? = null, 31 | defStyleAttr: Int = 0) : View(context, attrs, defStyleAttr) { 32 | 33 | private val fps: Long = 1000 / 60 34 | private val defaultStarCount: Int = 25 35 | private val threadExecutor = Executors.newSingleThreadExecutor() 36 | 37 | private var starCount: Int 38 | private var starColors: IntArray 39 | private var meteoritesColors: IntArray 40 | private var bigStarThreshold: Int 41 | private var minStarSize: Int 42 | private var maxStarSize: Int 43 | 44 | private var starsCalculatedFlag: Boolean = false 45 | private var viewWidth: Int = 0 46 | private var viewHeight: Int = 0 47 | private var starConstraints: StarConstraints 48 | 49 | private var stars: MutableList = mutableListOf() 50 | private var meteorite: Meteorite? = null 51 | 52 | private lateinit var starsIterator: MutableIterator 53 | private lateinit var timer: Timer 54 | private lateinit var task: TimerTask 55 | 56 | private val random: Random = Random() 57 | private var initiated: Boolean = false 58 | private var started: Boolean = false 59 | 60 | private lateinit var meteoriteListener: Meteorite.MeteoriteCompleteListener 61 | private var meteoritesEnabled: Boolean 62 | private var meteoritesInterval: Int 63 | 64 | private var calculateRunnable: Runnable? = null 65 | 66 | /** 67 | * init view's attributes 68 | */ 69 | init { 70 | 71 | val array = context.obtainStyledAttributes(attrs, R.styleable.AnimatedStarsView, defStyleAttr, 0) 72 | 73 | starColors = intArrayOf() 74 | starCount = array.getInt(R.styleable.AnimatedStarsView_starsView_starCount, defaultStarCount) 75 | minStarSize = array.getDimensionPixelSize(R.styleable.AnimatedStarsView_starsView_minStarSize, 4) 76 | maxStarSize = array.getDimensionPixelSize(R.styleable.AnimatedStarsView_starsView_maxStarSize, 24) 77 | bigStarThreshold = array.getDimensionPixelSize(R.styleable.AnimatedStarsView_starsView_bigStarThreshold, Integer.MAX_VALUE) 78 | starConstraints = StarConstraints(minStarSize, maxStarSize, bigStarThreshold) 79 | 80 | meteoritesColors = intArrayOf() 81 | meteoritesEnabled = array.getBoolean(R.styleable.AnimatedStarsView_starsView_meteoritesEnabled, false) 82 | meteoritesInterval = array.getInt(R.styleable.AnimatedStarsView_starsView_meteoritesInterval, 5000) 83 | 84 | val starColorsArrayId = array.getResourceId(R.styleable.AnimatedStarsView_starsView_starColors, 0) 85 | val meteoritesColorsArrayId = array.getResourceId(R.styleable.AnimatedStarsView_starsView_meteoritesColors, 0) 86 | 87 | if (starColorsArrayId != 0) { 88 | starColors = context.resources.getIntArray(starColorsArrayId) 89 | } 90 | 91 | if (meteoritesColorsArrayId != 0) { 92 | meteoritesColors = context.resources.getIntArray(meteoritesColorsArrayId) 93 | 94 | } 95 | 96 | array.recycle() 97 | 98 | } 99 | 100 | 101 | /** 102 | * Must call this in Activity's onStart 103 | */ 104 | fun onStart() { 105 | 106 | if (!started) { 107 | timer = Timer() 108 | task = timerTask { 109 | invalidateStars() 110 | } 111 | 112 | timer.scheduleAtFixedRate(task, 0, fps) 113 | 114 | started = true 115 | } 116 | } 117 | 118 | 119 | /** 120 | * Must call this in Activity's onStop 121 | */ 122 | fun onStop() { 123 | 124 | if (started) { 125 | task.cancel() 126 | timer.cancel() 127 | 128 | started = false 129 | 130 | } 131 | } 132 | 133 | /** 134 | * get view's size and init stars every time the size of the view has changed 135 | */ 136 | override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) { 137 | super.onSizeChanged(w, h, oldw, oldh) 138 | viewWidth = w 139 | viewHeight = h 140 | 141 | if (viewWidth > 0 && viewHeight > 0) { 142 | if (!initiated || stars.isEmpty()) { 143 | initStars() 144 | } 145 | } 146 | } 147 | 148 | 149 | /** 150 | * Draw stars on view's canvas 151 | */ 152 | override fun onDraw(canvas: Canvas?) { 153 | 154 | if (!initiated && !started) return 155 | 156 | // create a variable canvas object 157 | var newCanvas = canvas 158 | 159 | 160 | synchronized(stars) { 161 | if (stars.isNotEmpty()) { 162 | // onDraw each star on the canvas 163 | starsIterator = stars.iterator() 164 | starsIterator.forEach { newCanvas = it.onDraw(newCanvas) } 165 | 166 | newCanvas = meteorite?.onDraw(newCanvas) 167 | 168 | // reset flag 169 | starsCalculatedFlag = false 170 | } 171 | } 172 | // finish drawing view 173 | super.onDraw(newCanvas) 174 | 175 | } 176 | 177 | 178 | /** 179 | * create x stars with a random point location and alphaDouble 180 | */ 181 | private fun initStars() { 182 | 183 | if (!started) return 184 | // val generateColor = { starColors[random.nextInt(starColors.size)] } 185 | 186 | meteoriteListener = object : Meteorite.MeteoriteCompleteListener { 187 | override fun onMeteoriteComplete() { 188 | if (meteoritesEnabled) { 189 | postDelayed({ 190 | 191 | meteorite = Meteorite( 192 | smallestWidth = Math.min(viewWidth, viewHeight), 193 | x = viewWidth, 194 | y = Math.round(Math.random() * (viewHeight * 2 / 3)).toInt(), 195 | color = meteoritesColors[random.nextInt(meteoritesColors.size)], 196 | starSize = starConstraints.getRandomStarSize().toInt(), 197 | listener = meteoriteListener 198 | ) 199 | 200 | }, meteoritesInterval.toLong()) 201 | } 202 | } 203 | 204 | } 205 | 206 | synchronized(stars) { 207 | stars = MutableList(starCount) { 208 | 209 | val starCompleteListener = object : BaseStar.StarCompleteListener { 210 | override fun onStarAnimationComplete() { 211 | stars[it] = createStar(it, this) 212 | } 213 | 214 | } 215 | createStar(it, starCompleteListener) 216 | 217 | } 218 | } 219 | 220 | meteoriteListener.onMeteoriteComplete() 221 | 222 | // so we know lateinit var was initiated 223 | initiated = true 224 | 225 | } 226 | 227 | private fun createStar(it: Int, starCompleteListener: BaseStar.StarCompleteListener): Star { 228 | return InterstellarFactory.create(starConstraints = starConstraints, 229 | x = Math.round(Math.random() * viewWidth).toInt(), 230 | y = Math.round(Math.random() * viewHeight).toInt(), 231 | color = starColors[it % starColors.size], 232 | listener = starCompleteListener) 233 | } 234 | 235 | 236 | /** 237 | * calculate and invalidate all stars for the next frame 238 | */ 239 | private fun invalidateStars() { 240 | 241 | // not initiated 242 | if (!initiated) return 243 | 244 | // not finised drawing 245 | if (starsCalculatedFlag) return 246 | 247 | if (calculateRunnable == null) { 248 | calculateRunnable = Runnable { 249 | 250 | synchronized(stars) { 251 | // recalculate stars position and alphaInt on a background thread 252 | starsIterator = stars.iterator() 253 | starsIterator.forEach { it.calculateFrame() } 254 | } 255 | meteorite?.calculateFrame(viewWidth, viewHeight) 256 | starsCalculatedFlag = true 257 | 258 | // then post to ui thread 259 | postInvalidate() 260 | } 261 | } 262 | 263 | 264 | // new background thread 265 | threadExecutor.execute(calculateRunnable) 266 | 267 | } 268 | } 269 | 270 | 271 | -------------------------------------------------------------------------------- /stars/src/main/java/com/sofakingforever/stars/entities/InterstellarFactory.kt: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.stars.entities 2 | 3 | import com.sofakingforever.stars.entities.stars.BaseStar 4 | import com.sofakingforever.stars.entities.stars.RoundyStar 5 | import com.sofakingforever.stars.entities.stars.ShinyStar 6 | import com.sofakingforever.stars.entities.stars.TinyStar 7 | 8 | object InterstellarFactory { 9 | 10 | fun create(starConstraints: StarConstraints, x: Int, y: Int, color: Int, listener: BaseStar.StarCompleteListener): Star { 11 | val starSize = starConstraints.getRandomStarSize() 12 | 13 | return if (starSize >= starConstraints.bigStarThreshold) { 14 | 15 | // big star ones randomly be Shiny or Round 16 | if (Math.random() < 0.7) { 17 | ShinyStar(starConstraints, x, y, color, listener) 18 | } else { 19 | RoundyStar(starConstraints, x, y, color, listener) 20 | } 21 | } else { 22 | // others will ne tiny 23 | TinyStar(starConstraints, x, y, color, listener) 24 | } 25 | } 26 | 27 | } -------------------------------------------------------------------------------- /stars/src/main/java/com/sofakingforever/stars/entities/Star.kt: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.stars.entities 2 | 3 | import android.graphics.Canvas 4 | 5 | interface Star { 6 | 7 | var x: Int 8 | var y: Int 9 | val color: Int 10 | 11 | var alphaDouble: Double 12 | 13 | var multiplierFactor: Int 14 | var incrementFactor: Double 15 | val starSize : Double 16 | 17 | 18 | 19 | fun onDraw(canvas: Canvas?): Canvas? 20 | 21 | fun calculateFrame() 22 | 23 | } -------------------------------------------------------------------------------- /stars/src/main/java/com/sofakingforever/stars/entities/StarConstraints.kt: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.stars.entities 2 | 3 | class StarConstraints(private val minStarSize: Int, private val maxStarSize: Int, val bigStarThreshold: Int) { 4 | 5 | fun getRandomStarSize(): Double { 6 | val maxRandom = maxStarSize - minStarSize 7 | return (minStarSize + Math.random() * maxRandom) 8 | } 9 | 10 | } -------------------------------------------------------------------------------- /stars/src/main/java/com/sofakingforever/stars/entities/meteor/Meteorite.kt: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.stars.entities.meteor 2 | 3 | import android.graphics.* 4 | import android.support.v4.graphics.ColorUtils 5 | 6 | 7 | internal class Meteorite(val smallestWidth: Int, var x: Int, var y: Int, val starSize: Int, var color: Int, val listener: Meteorite.MeteoriteCompleteListener) { 8 | 9 | private fun getTrailAlpha(): Int { 10 | // val randomFactor = Math.random() * 255 11 | // return randomFactor.toInt() 12 | return 200 + (Math.random() * 55).toInt() 13 | 14 | 15 | 16 | } 17 | 18 | private val trailLength = (200 + (Math.random() * (smallestWidth / 4))).toFloat() 19 | private val trailColor: Int = ColorUtils.setAlphaComponent(color, getTrailAlpha()) 20 | private var finished = false 21 | private val factor = starSize * (Math.random() * 1.9f) 22 | 23 | 24 | private val starPaint = Paint(Paint.ANTI_ALIAS_FLAG).also { 25 | it.color = color 26 | } 27 | 28 | private val trailPaint = Paint(Paint.ANTI_ALIAS_FLAG).also { 29 | it.strokeWidth = 30 | starSize.toFloat() 31 | } 32 | 33 | 34 | fun calculateFrame(viewWidth: Int, viewHeight: Int) { 35 | 36 | if (finished) { 37 | return 38 | } 39 | 40 | // go left 41 | x -= factor.toInt() 42 | 43 | // go down 44 | y += factor.toInt() 45 | 46 | 47 | 48 | trailPaint.shader = LinearGradient( 49 | x.toFloat(), 50 | y.toFloat(), 51 | x.toFloat() + trailLength, 52 | y.toFloat() - trailLength, 53 | trailColor, 54 | Color.TRANSPARENT, 55 | Shader.TileMode.CLAMP) 56 | 57 | 58 | if (x < (viewWidth * -0.5)) { 59 | listener.onMeteoriteComplete() 60 | finished = true 61 | } 62 | } 63 | 64 | fun onDraw(canvas: Canvas?): Canvas? { 65 | 66 | canvas?.drawLine(x.toFloat(), y.toFloat(), x.toFloat() + trailLength, y.toFloat() - trailLength, trailPaint) 67 | canvas?.drawCircle(x.toFloat(), y.toFloat(), starSize.toFloat() / 2f, starPaint) 68 | return canvas 69 | } 70 | 71 | 72 | interface MeteoriteCompleteListener { 73 | fun onMeteoriteComplete() 74 | } 75 | } 76 | 77 | -------------------------------------------------------------------------------- /stars/src/main/java/com/sofakingforever/stars/entities/stars/BaseStar.kt: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.stars.entities.stars 2 | 3 | import android.graphics.Paint 4 | import com.sofakingforever.stars.entities.Star 5 | import com.sofakingforever.stars.entities.StarConstraints 6 | 7 | abstract class BaseStar( 8 | starConstraints: StarConstraints, 9 | override var x: Int, 10 | override var y: Int, 11 | override var color: Int, 12 | private val listener: StarCompleteListener) : Star { 13 | 14 | val alphaInt: Int 15 | get() { 16 | return when { 17 | alphaDouble > 1.0 -> 255 18 | alphaDouble < 0.0 -> 0 19 | else -> (alphaDouble * 255.0).toInt() 20 | } 21 | } 22 | 23 | override var alphaDouble: Double = 0.0 24 | override var multiplierFactor: Int = 1 25 | 26 | override val starSize: Double = starConstraints.getRandomStarSize() 27 | 28 | 29 | internal var paint = initPaintColor() 30 | 31 | 32 | abstract fun initPaintColor(): Paint 33 | 34 | private var calculated: Boolean = false 35 | 36 | /** 37 | * calculate single frame for star (multiplierFactor, alphaDouble, and location if needed) 38 | */ 39 | override fun calculateFrame() { 40 | 41 | calculated = true 42 | 43 | 44 | // calculate direction / multiplierFactor of alphaDouble 45 | 46 | if (alphaDouble > 1) { 47 | multiplierFactor *= -1 48 | } 49 | 50 | // calculate new alphaDouble for star 51 | alphaDouble += incrementFactor * multiplierFactor 52 | 53 | if (alphaDouble < 0.0) { 54 | 55 | // need to remove star and add new one 56 | listener.onStarAnimationComplete() 57 | 58 | return 59 | } 60 | 61 | 62 | } 63 | 64 | 65 | interface StarCompleteListener { 66 | fun onStarAnimationComplete() 67 | } 68 | 69 | 70 | } -------------------------------------------------------------------------------- /stars/src/main/java/com/sofakingforever/stars/entities/stars/RoundyStar.kt: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.stars.entities.stars 2 | 3 | import android.graphics.Canvas 4 | import android.graphics.Paint 5 | import com.sofakingforever.stars.entities.StarConstraints 6 | 7 | class RoundyStar(starConstraints: StarConstraints, x: Int, y: Int, color: Int, listener: StarCompleteListener) : BaseStar(starConstraints, x, y, color, listener) { 8 | override fun initPaintColor(): Paint { 9 | val paint = Paint(Paint.ANTI_ALIAS_FLAG) 10 | paint.color = color 11 | paint.style = Paint.Style.STROKE 12 | paint.strokeWidth = starSize.toFloat() / 4f 13 | return paint 14 | } 15 | 16 | override var incrementFactor: Double = Math.random() * .025 17 | 18 | override fun onDraw(canvas: Canvas?): Canvas? { 19 | paint?.also { 20 | it.alpha = alphaInt 21 | canvas?.drawCircle(x.toFloat(), y.toFloat(), starSize.toFloat() / 2f, it) 22 | 23 | } 24 | return canvas 25 | } 26 | } -------------------------------------------------------------------------------- /stars/src/main/java/com/sofakingforever/stars/entities/stars/ShinyStar.kt: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.stars.entities.stars 2 | 3 | import android.graphics.Canvas 4 | import android.graphics.Paint 5 | import android.graphics.RectF 6 | import com.sofakingforever.stars.entities.StarConstraints 7 | 8 | class ShinyStar(starConstraints: StarConstraints, x: Int, y: Int, color: Int, listener: StarCompleteListener) : BaseStar(starConstraints, x, y, color, listener) { 9 | 10 | 11 | private var hRect: RectF? = null 12 | private var vRect: RectF? = null 13 | 14 | override var incrementFactor: Double = Math.random() * .030 15 | 16 | override fun initPaintColor(): Paint { 17 | val paint = Paint(Paint.ANTI_ALIAS_FLAG) 18 | paint.color = color 19 | return paint 20 | } 21 | 22 | override fun calculateFrame() { 23 | 24 | if (hRect == null || vRect == null) { 25 | 26 | 27 | val hLeft = (x - starSize / 2).toFloat() 28 | val hRight = (x + starSize / 2).toFloat() 29 | val hTop = (y - starSize / 6).toFloat() 30 | val hBottom = (y + starSize / 6).toFloat() 31 | 32 | hRect = RectF(hLeft, hTop, hRight, hBottom) 33 | 34 | 35 | val vLeft = (x - starSize / 6).toFloat() 36 | val vRight = (x + starSize / 6).toFloat() 37 | val vTop = (y - starSize / 2).toFloat() 38 | val vBottom = (y + starSize / 2).toFloat() 39 | 40 | vRect = RectF(vLeft, vTop, vRight, vBottom) 41 | } 42 | 43 | super.calculateFrame() 44 | 45 | 46 | } 47 | 48 | override fun onDraw(canvas: Canvas?): Canvas? { 49 | paint?.also { 50 | it.alpha = alphaInt 51 | 52 | if (hRect != null && vRect != null) { 53 | canvas?.drawRoundRect(hRect, 6f, 6f, it) 54 | canvas?.drawRoundRect(vRect, 6f, 6f, it) 55 | 56 | } 57 | } 58 | return canvas 59 | } 60 | } -------------------------------------------------------------------------------- /stars/src/main/java/com/sofakingforever/stars/entities/stars/TinyStar.kt: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.stars.entities.stars 2 | 3 | import android.graphics.Canvas 4 | import android.graphics.Paint 5 | import com.sofakingforever.stars.entities.StarConstraints 6 | 7 | class TinyStar(starConstraints: StarConstraints, x: Int, y: Int, color: Int, listener: StarCompleteListener) : BaseStar(starConstraints, x, y, color, listener) { 8 | override var incrementFactor: Double = Math.random() * .045 9 | 10 | override fun initPaintColor(): Paint { 11 | val paint = Paint(Paint.ANTI_ALIAS_FLAG) 12 | paint.color = color 13 | return paint 14 | } 15 | 16 | override fun onDraw(canvas: Canvas?): Canvas? { 17 | paint?.also { 18 | it.alpha = alphaInt 19 | canvas?.drawCircle(x.toFloat(), y.toFloat(), starSize.toFloat() / 2f, it) 20 | 21 | } 22 | return canvas 23 | } 24 | } -------------------------------------------------------------------------------- /stars/src/main/res/values/attrs_stars.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /stars/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | Animated Stars View 3 | 4 | -------------------------------------------------------------------------------- /stars/src/test/java/com/sofakingforever/stars/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package com.sofakingforever.stars; 2 | 3 | import org.junit.Test; 4 | 5 | import static org.junit.Assert.*; 6 | 7 | /** 8 | * Example local unit test, which will execute on the development machine (host). 9 | * 10 | * @see Testing documentation 11 | */ 12 | public class ExampleUnitTest { 13 | @Test 14 | public void addition_isCorrect() { 15 | assertEquals(4, 2 + 2); 16 | } 17 | } --------------------------------------------------------------------------------