├── .gitignore ├── LICENSE ├── README.md ├── build.gradle ├── proguard-rules.pro └── src ├── androidTest └── java │ └── com │ └── tbuonomo │ └── squaresandcirclesloading │ └── ApplicationTest.java ├── main ├── AndroidManifest.xml ├── java │ └── com │ │ └── tbuonomo │ │ └── squaresandcirclesloading │ │ ├── QuartCircle.java │ │ └── SquaresAndCirclesLoadingView.java └── res │ ├── drawable │ └── square.xml │ └── values │ ├── attrs.xml │ ├── dimens.xml │ └── strings.xml └── test └── java └── com └── tbuonomo └── squaresandcirclesloading └── ExampleUnitTest.java /.gitignore: -------------------------------------------------------------------------------- 1 | # Built application files 2 | *.apk 3 | *.ap_ 4 | .DS_Store 5 | # Files for the Dalvik VM 6 | *.dex 7 | 8 | # Java class files 9 | *.class 10 | 11 | # Generated files 12 | bin/ 13 | /*/bin/ 14 | gen/ 15 | /*/gen/ 16 | 17 | # Gradle files 18 | .gradle/ 19 | /*/.gradle 20 | build/ 21 | /*/build/ 22 | 23 | # Config properties file 24 | conf.properties 25 | 26 | # Local configuration file (sdk path, etc) 27 | local.properties 28 | /*/local.properties 29 | 30 | # Log Files 31 | *.log 32 | 33 | # temp files 34 | *~ 35 | 36 | # Idea files 37 | .idea/ 38 | /*/.idea 39 | *.iml 40 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Squares And Circles Loading Animation 2 | 3 | A pretty loading animation inspired by [this post](https://dribbble.com/shots/2924374-Square-Circles) on [Dribble](https://dribbble.com) 4 | 5 | ![ezgif com-crop](https://cloud.githubusercontent.com/assets/15737675/18036093/2aa2463e-6d63-11e6-8c07-d95fd147fcef.gif) ![ezgif com-crop 1](https://cloud.githubusercontent.com/assets/15737675/18036129/d8324bfa-6d63-11e6-947c-9971ea62c1b6.gif) 6 | ![ezgif com-crop 2](https://cloud.githubusercontent.com/assets/15737675/18036200/d72c3f62-6d64-11e6-9f4e-103912eca3f6.gif) 7 | ## How to 8 | #### Gradle 9 | ```Gradle 10 | dependencies { 11 | compile 'com.tbuonomo:squaresandcirclesloading:1.0.2' 12 | } 13 | ``` 14 | #### In your XML layout 15 | ```Xml 16 | 24 | ``` 25 | #### Attributes 26 | | Attribute | Description | 27 | | --- | --- | 28 | | `circlesColor` | Color of the circles | 29 | | `squareColor` | Color of the square (must be the same of the parent background) | 30 | | `interpolator` | The interpolator to use for the points animation (by default `fastOutSlowIn`) | 31 | | `animationDuration` | Step duration of the animation in ms (by default 800) | 32 | 33 | ## License 34 | Copyright 2016 Tommy Buonomo 35 | 36 | Licensed under the Apache License, Version 2.0 (the "License"); 37 | you may not use this file except in compliance with the License. 38 | You may obtain a copy of the License at 39 | 40 | http://www.apache.org/licenses/LICENSE-2.0 41 | 42 | Unless required by applicable law or agreed to in writing, software 43 | distributed under the License is distributed on an "AS IS" BASIS, 44 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 45 | See the License for the specific language governing permissions and 46 | limitations under the License. 47 | -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | 3 | android { 4 | compileSdkVersion 24 5 | buildToolsVersion "24.0.1" 6 | 7 | defaultConfig { 8 | minSdkVersion 14 9 | targetSdkVersion 24 10 | versionCode 1 11 | versionName "1.0.1" 12 | } 13 | buildTypes { 14 | release { 15 | minifyEnabled false 16 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 17 | } 18 | } 19 | } 20 | 21 | dependencies { 22 | compile fileTree(dir: 'libs', include: ['*.jar']) 23 | testCompile 'junit:junit:4.12' 24 | compile 'com.android.support:appcompat-v7:24.2.0' 25 | } 26 | 27 | buildscript { 28 | repositories { 29 | jcenter() 30 | } 31 | dependencies { 32 | classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.2' 33 | classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5' 34 | } 35 | } 36 | 37 | group = 'com.tbuonomo' 38 | version = '1.0.2' 39 | 40 | apply plugin: 'com.jfrog.bintray' 41 | apply plugin: 'com.github.dcendents.android-maven' 42 | 43 | task generateSourcesJar(type: Jar) { 44 | from android.sourceSets.main.java.srcDirs 45 | classifier 'sources' 46 | } 47 | 48 | artifacts { 49 | archives generateSourcesJar 50 | } 51 | 52 | bintray { 53 | def Properties localProps = new Properties() 54 | localProps.load(new FileInputStream(file('local.properties'))) 55 | 56 | user = localProps.getProperty("bintrayUser") 57 | key = localProps.getProperty("bintrayApiKey") 58 | pkg { 59 | repo = 'maven' 60 | name = 'squares-and-circles-loading' 61 | 62 | version { 63 | name = version 64 | desc = 'Fix null pointer exception' 65 | vcsTag = version 66 | } 67 | 68 | licenses = ['Apache-2.0'] 69 | vcsUrl = 'https://github.com/tommybuonomo/squaresandcirclesloading' 70 | websiteUrl = 'https://github.com/tommybuonomo/squaresandcirclesloading' 71 | } 72 | configurations = ['archives'] 73 | } 74 | -------------------------------------------------------------------------------- /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 /home/tommy/Documents/Libraries/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 | -------------------------------------------------------------------------------- /src/androidTest/java/com/tbuonomo/squaresandcirclesloading/ApplicationTest.java: -------------------------------------------------------------------------------- 1 | package com.tbuonomo.squaresandcirclesloading; 2 | 3 | import android.app.Application; 4 | import android.test.ApplicationTestCase; 5 | 6 | /** 7 | * Testing Fundamentals 8 | */ 9 | public class ApplicationTest extends ApplicationTestCase { 10 | public ApplicationTest() { 11 | super(Application.class); 12 | } 13 | } -------------------------------------------------------------------------------- /src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 9 | 10 | 11 | 12 | 13 | -------------------------------------------------------------------------------- /src/main/java/com/tbuonomo/squaresandcirclesloading/QuartCircle.java: -------------------------------------------------------------------------------- 1 | package com.tbuonomo.squaresandcirclesloading; 2 | 3 | import android.graphics.Canvas; 4 | import android.graphics.Color; 5 | import android.graphics.ColorFilter; 6 | import android.graphics.Paint; 7 | import android.graphics.Rect; 8 | import android.graphics.RectF; 9 | import android.graphics.drawable.GradientDrawable; 10 | import android.util.Log; 11 | 12 | /** 13 | * Created by tommy on 28/08/16. 14 | */ 15 | public class QuartCircle extends GradientDrawable { 16 | 17 | private Paint paint; 18 | private RectF rectF; 19 | private int color; 20 | private Direction angle; 21 | private RectF bounds; 22 | private boolean fill; 23 | 24 | public enum Direction { 25 | BOTTOM_LEFT ((float) Math.toDegrees(Math.PI)), 26 | BOTTOM_RIGHT ((float) Math.toDegrees(Math.PI / 2)), 27 | TOP_RIGHT (0), 28 | TOP_LEFT ((float) Math.toDegrees(Math.PI * 3 / 2)); 29 | 30 | private float startAngle; 31 | 32 | Direction(float startAngle) { 33 | this.startAngle = startAngle; 34 | } 35 | 36 | public float getStartAngle() { 37 | return startAngle; 38 | } 39 | } 40 | 41 | public QuartCircle() { 42 | this(Color.BLUE, Direction.BOTTOM_LEFT); 43 | } 44 | 45 | public QuartCircle(int color, Direction angle) { 46 | this.color = color; 47 | this.angle = angle; 48 | paint = new Paint(); 49 | paint.setColor(color); 50 | paint.setStyle(Paint.Style.FILL); 51 | paint.setAntiAlias(true); 52 | rectF = new RectF(); 53 | } 54 | 55 | /** 56 | * A 32bit color not a color resources. 57 | * 58 | * @param color 59 | */ 60 | @Override 61 | public void setColor(int color) { 62 | this.color = color; 63 | paint.setColor(color); 64 | invalidateSelf(); 65 | } 66 | 67 | public void setAngle(Direction angle) { 68 | this.angle = angle; 69 | invalidateSelf(); 70 | } 71 | 72 | public void setFill(boolean fill) { 73 | this.fill = fill; 74 | invalidateSelf(); 75 | } 76 | 77 | @Override 78 | public void draw(Canvas canvas) { 79 | canvas.save(); 80 | Log.i(QuartCircle.class.getSimpleName(), "draw: " + bounds); 81 | float sweepAngle = fill ? 360 : (float) Math.toDegrees((Math.PI * 3 / 2)); 82 | canvas.drawArc(bounds, angle.getStartAngle(), sweepAngle, true, paint); 83 | } 84 | 85 | @Override 86 | public void setAlpha(int alpha) { 87 | // Has no effect 88 | } 89 | 90 | @Override 91 | public void setColorFilter(ColorFilter cf) { 92 | // Has no effect 93 | } 94 | 95 | @Override 96 | protected void onBoundsChange(Rect bounds) { 97 | super.onBoundsChange(bounds); 98 | this.bounds = new RectF(bounds); 99 | Log.i(QuartCircle.class.getSimpleName(), "onBoundsChange: " + bounds); 100 | invalidateSelf(); 101 | } 102 | 103 | @Override 104 | public int getOpacity() { 105 | // Not Implemented 106 | return 0; 107 | } 108 | 109 | } 110 | -------------------------------------------------------------------------------- /src/main/java/com/tbuonomo/squaresandcirclesloading/SquaresAndCirclesLoadingView.java: -------------------------------------------------------------------------------- 1 | package com.tbuonomo.squaresandcirclesloading; 2 | 3 | import android.animation.Animator; 4 | import android.animation.AnimatorListenerAdapter; 5 | import android.animation.AnimatorSet; 6 | import android.animation.ValueAnimator; 7 | import android.content.Context; 8 | import android.content.res.TypedArray; 9 | import android.graphics.Color; 10 | import android.graphics.drawable.GradientDrawable; 11 | import android.support.v4.content.ContextCompat; 12 | import android.support.v4.view.animation.FastOutSlowInInterpolator; 13 | import android.support.v4.view.animation.LinearOutSlowInInterpolator; 14 | import android.util.AttributeSet; 15 | import android.view.animation.AccelerateDecelerateInterpolator; 16 | import android.view.animation.AnticipateOvershootInterpolator; 17 | import android.view.animation.DecelerateInterpolator; 18 | import android.view.animation.Interpolator; 19 | import android.view.animation.OvershootInterpolator; 20 | import android.widget.ImageView; 21 | import android.widget.RelativeLayout; 22 | 23 | /** 24 | * Created by tommy on 02/07/16. 25 | */ 26 | public class SquaresAndCirclesLoadingView extends RelativeLayout { 27 | private enum InterpolatorValues { 28 | FAST_IN_FAST_OUT (new FastOutSlowInInterpolator()), 29 | ANTICIPATE_OVERSHOOT(new AnticipateOvershootInterpolator()), 30 | OVERSHOOT(new OvershootInterpolator()), 31 | ACCELERATE_DECELERATE(new AccelerateDecelerateInterpolator()), 32 | DECELERATE(new DecelerateInterpolator()), 33 | LINEAR_OUT_SLOW_IN(new LinearOutSlowInInterpolator()); 34 | 35 | private Interpolator mInterpolator; 36 | 37 | InterpolatorValues(Interpolator interpolator) { 38 | this.mInterpolator = interpolator; 39 | } 40 | 41 | public Interpolator getInterpolator() { 42 | return mInterpolator; 43 | } 44 | 45 | } 46 | private static final int DEFAULT_DURATION = 800; 47 | 48 | private static final int DEFAULT_POINT_COLOR = Color.parseColor("#1255c6"); 49 | private static final int DEFAULT_BACKGROUND_COLOR = Color.WHITE; 50 | private ImageView[] mCircles; 51 | 52 | private Interpolator mInterpolator; 53 | private AnimatorSet mCircleAnimator; 54 | private int mDuration; 55 | private int mSize; 56 | private int mCircleRadius; 57 | private ImageView mSquare; 58 | 59 | public SquaresAndCirclesLoadingView(Context context) { 60 | super(context); 61 | init(context, null); 62 | } 63 | 64 | public SquaresAndCirclesLoadingView(Context context, AttributeSet attrs) { 65 | super(context, attrs); 66 | init(context, attrs); 67 | } 68 | 69 | public SquaresAndCirclesLoadingView(Context context, AttributeSet attrs, int defStyleAttr) { 70 | super(context, attrs, defStyleAttr); 71 | init(context, attrs); 72 | } 73 | 74 | private void init(Context context, AttributeSet attrs) { 75 | removeViewsIfNeeded(); 76 | 77 | if (attrs != null) { 78 | TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.SquaresAndCirclesLoadingView); 79 | 80 | int circleColor = a.getColor(R.styleable.SquaresAndCirclesLoadingView_circlesColor, DEFAULT_POINT_COLOR); 81 | setUpCircles(context, circleColor); 82 | 83 | mDuration = a.getInt(R.styleable.SquaresAndCirclesLoadingView_animationDuration, DEFAULT_DURATION); 84 | int backgroundColor = a.getColor(R.styleable.SquaresAndCirclesLoadingView_backgroundColor, DEFAULT_BACKGROUND_COLOR); 85 | 86 | int interpolator = a.getInt(R.styleable.SquaresAndCirclesLoadingView_interpolator, 0); 87 | 88 | mInterpolator = InterpolatorValues.values()[interpolator].getInterpolator(); 89 | 90 | setUpSquare(context, backgroundColor); 91 | a.recycle(); 92 | } else { 93 | setUpCircleColors(DEFAULT_POINT_COLOR); 94 | mDuration = DEFAULT_DURATION; 95 | } 96 | } 97 | 98 | private void setUpCircles(Context context, int circleColor) { 99 | mCircles = new ImageView[4]; 100 | 101 | for (int i = 0; i < 4; i++) { 102 | ImageView imageView = new ImageView(context); 103 | imageView.setImageDrawable(new QuartCircle(circleColor, QuartCircle.Direction.values()[i])); 104 | mCircles[i] = imageView; 105 | addView(imageView); 106 | } 107 | } 108 | 109 | private void setUpSquare(Context context, int color) { 110 | mSquare = new ImageView(context); 111 | mSquare.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.square)); 112 | addView(mSquare); 113 | GradientDrawable gradientDrawable = (GradientDrawable) mSquare.getDrawable(); 114 | gradientDrawable.setColor(color); 115 | mSquare.setVisibility(INVISIBLE); 116 | } 117 | 118 | @Override 119 | protected void onSizeChanged(int w, int h, int oldw, int oldh) { 120 | super.onSizeChanged(w, h, oldw, oldh); 121 | mSize = Math.min(w, h); 122 | setUpCirclesSize(); 123 | setCirclesAnglePosition(Math.PI / 4); 124 | setUpAnimators(mDuration); 125 | mCircleAnimator.start(); 126 | } 127 | 128 | private void setUpAnimators(int duration) { 129 | ValueAnimator rotationStart = ValueAnimator.ofFloat(0, (float) Math.PI * 3 / 2); 130 | 131 | rotationStart.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 132 | @Override 133 | public void onAnimationUpdate(ValueAnimator valueAnimator) { 134 | float value = (float) valueAnimator.getAnimatedValue(); 135 | setCirclesAnglePosition(value / 3 + Math.PI / 4); 136 | for (ImageView circle : mCircles) { 137 | circle.setRotation((float) Math.toDegrees(value)); 138 | } 139 | } 140 | }); 141 | 142 | rotationStart.addListener(new AnimatorListenerAdapter() { 143 | @Override 144 | public void onAnimationStart(Animator animation) { 145 | super.onAnimationStart(animation); 146 | mSquare.setVisibility(INVISIBLE); 147 | for (ImageView circle : mCircles) { 148 | ((QuartCircle) circle.getDrawable()).setFill(false); 149 | } 150 | } 151 | }); 152 | 153 | ValueAnimator rotationEnd = ValueAnimator.ofFloat(0, -(float) Math.PI * 3 / 2); 154 | rotationEnd.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 155 | @Override 156 | public void onAnimationUpdate(ValueAnimator valueAnimator) { 157 | float value = (float) valueAnimator.getAnimatedValue(); 158 | setCirclesAnglePosition(value / 3 + Math.PI / 4); 159 | mSquare.setRotation((float) Math.toDegrees(value / 3)); 160 | for (ImageView circle : mCircles) { 161 | circle.setRotation((float) Math.toDegrees(value)); 162 | } 163 | } 164 | }); 165 | 166 | rotationEnd.addListener(new AnimatorListenerAdapter() { 167 | @Override 168 | public void onAnimationEnd(Animator animation) { 169 | super.onAnimationEnd(animation); 170 | mCircleAnimator.start(); 171 | } 172 | 173 | @Override 174 | public void onAnimationStart(Animator animation) { 175 | super.onAnimationStart(animation); 176 | mSquare.setVisibility(VISIBLE); 177 | for (ImageView circle : mCircles) { 178 | ((QuartCircle) circle.getDrawable()).setFill(true); 179 | } 180 | } 181 | }); 182 | 183 | mCircleAnimator = new AnimatorSet(); 184 | mCircleAnimator.playSequentially(rotationStart, rotationEnd); 185 | 186 | for (Animator animator : mCircleAnimator.getChildAnimations()) { 187 | animator.setDuration(duration); 188 | animator.setInterpolator(mInterpolator); 189 | animator.setStartDelay(500); 190 | } 191 | } 192 | 193 | private void setUpCirclesSize() { 194 | mCircleRadius = mSize / 5; 195 | for (ImageView circle : mCircles) { 196 | RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) circle.getLayoutParams(); 197 | params.width = mCircleRadius * 2; 198 | params.height = mCircleRadius * 2; 199 | params.addRule(CENTER_IN_PARENT, TRUE); 200 | circle.setLayoutParams(params); 201 | } 202 | 203 | int translation = mSize / 2 - mCircleRadius; 204 | RelativeLayout.LayoutParams squareParams = (RelativeLayout.LayoutParams) mSquare.getLayoutParams(); 205 | squareParams.width = (int) ((Math.cos(Math.PI / 4) * translation) * 2); 206 | squareParams.height = (int) ((Math.sin(Math.PI / 4) * translation) * 2); 207 | squareParams.addRule(CENTER_IN_PARENT, TRUE); 208 | mSquare.setLayoutParams(squareParams); 209 | } 210 | 211 | private void setCirclesAnglePosition(double startAngle) { 212 | int translation = mSize / 2 - mCircleRadius; 213 | for (int i = 0; i < 4; i++) { 214 | double angle = startAngle + i * Math.PI / 2; 215 | mCircles[i].setTranslationX((float) (Math.cos(angle) * translation)); 216 | mCircles[i].setTranslationY(-(float) (Math.sin(angle) * translation)); 217 | } 218 | } 219 | 220 | 221 | private void setUpCircleColors(int color) { 222 | for (ImageView circle : mCircles) { 223 | GradientDrawable gradientDrawable = (GradientDrawable) circle.getDrawable(); 224 | gradientDrawable.setColor(color); 225 | } 226 | } 227 | 228 | private void removeViewsIfNeeded() { 229 | if (getChildCount() > 0) { 230 | removeAllViews(); 231 | } 232 | } 233 | 234 | //********************************************************* 235 | // Users Methods 236 | //********************************************************* 237 | 238 | public void setCirclesColor(int color) { 239 | setUpCircleColors(color); 240 | } 241 | 242 | //********************************************************* 243 | // Lifecycle 244 | //********************************************************* 245 | 246 | @Override 247 | protected void onDetachedFromWindow() { 248 | super.onDetachedFromWindow(); 249 | if (mCircleAnimator != null) { 250 | mCircleAnimator.end(); 251 | mCircleAnimator.removeAllListeners(); 252 | for (Animator animator : mCircleAnimator.getChildAnimations()) { 253 | animator.end(); 254 | animator.removeAllListeners(); 255 | } 256 | mCircleAnimator = null; 257 | } 258 | } 259 | } 260 | -------------------------------------------------------------------------------- /src/main/res/drawable/square.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | -------------------------------------------------------------------------------- /src/main/res/values/attrs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | -------------------------------------------------------------------------------- /src/main/res/values/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 5dp 4 | -------------------------------------------------------------------------------- /src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | SquaresAndCirclesLoading 3 | 4 | -------------------------------------------------------------------------------- /src/test/java/com/tbuonomo/squaresandcirclesloading/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package com.tbuonomo.squaresandcirclesloading; 2 | 3 | import org.junit.Test; 4 | 5 | import static org.junit.Assert.*; 6 | 7 | /** 8 | * To work on unit tests, switch the Test Artifact in the Build Variants view. 9 | */ 10 | public class ExampleUnitTest { 11 | @Test 12 | public void addition_isCorrect() throws Exception { 13 | assertEquals(4, 2 + 2); 14 | } 15 | } --------------------------------------------------------------------------------