├── .gitignore ├── LICENSE.txt ├── README.md ├── art └── expand_icon_demo.gif ├── build.gradle ├── expandicon-sample ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── com │ │ └── github │ │ └── zagum │ │ └── expandicon │ │ └── sample │ │ └── SampleActivity.java │ └── res │ ├── layout │ └── activity_sample.xml │ ├── mipmap-hdpi │ └── ic_launcher.png │ ├── mipmap-mdpi │ └── ic_launcher.png │ ├── mipmap-xhdpi │ └── ic_launcher.png │ ├── mipmap-xxhdpi │ └── ic_launcher.png │ ├── mipmap-xxxhdpi │ └── ic_launcher.png │ └── values │ ├── colors.xml │ ├── strings.xml │ └── styles.xml ├── expandicon ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── com │ │ └── github │ │ └── zagum │ │ └── expandicon │ │ └── ExpandIconView.java │ └── res │ └── values │ └── attrs.xml ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | # IntelliJ IDEA 2 | .idea 3 | *.iml 4 | 5 | # Gradle 6 | .gradle/ 7 | build/ 8 | 9 | # Local configuration file (sdk path, etc) 10 | local.properties -------------------------------------------------------------------------------- /LICENSE.txt: -------------------------------------------------------------------------------- 1 | 2 | Apache License 3 | Version 2.0, January 2004 4 | http://www.apache.org/licenses/ 5 | 6 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 7 | 8 | 1. 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-------------------------------------------------------------------------------- 1 | Android-ExpandIcon 2 | ================ 3 | 4 | [![Android Arsenal](https://img.shields.io/badge/Android%20Arsenal-Android--ExpandIcon-brightgreen.svg?style=flat)](https://android-arsenal.com/details/1/4966) 5 | [![JitPack](https://jitpack.io/v/zagum/Android-ExpandIcon.svg)](https://jitpack.io/#zagum/Android-ExpandIcon) 6 | [![API](https://img.shields.io/badge/API-15%2B-brightgreen.svg?style=flat)](https://android-arsenal.com/api?level=15) 7 | 8 | Nice and simple customizable implementation of Google style up/down arrow. 9 | 10 | ![image](https://github.com/zagum/Android-ExpandIcon/blob/master/art/expand_icon_demo.gif) 11 | 12 | Another nice example of using this library: [Pixel Slide by hearsilent](https://github.com/hearsilent/PixelSlide) 13 | 14 | Compatibility 15 | ------------- 16 | 17 | This library is compatible from API 15 (Android 4.0.3). 18 | 19 | Download 20 | -------- 21 | 22 | Add it in your root build.gradle at the end of repositories: 23 | 24 | ```groovy 25 | allprojects { 26 | repositories { 27 | ... 28 | maven { url "https://jitpack.io" } 29 | } 30 | } 31 | ``` 32 | 33 | Add the dependency 34 | 35 | ```groovy 36 | dependencies { 37 | implementation 'com.github.zagum:Android-ExpandIcon:1.3.0' 38 | } 39 | ``` 40 | 41 | Usage 42 | ----- 43 | 44 | Default implementation: 45 | 46 | ```xml 47 | 50 | ``` 51 | 52 | Fully customized implementation: 53 | 54 | ```xml 55 | 68 | ``` 69 | 70 | Public methods: 71 | 72 | ```java 73 | expandIconView.switchState(); 74 | 75 | expandIconView.setState(ExpandIconView.LESS, true); 76 | 77 | expandIconView.setFraction(.3f, true); 78 | 79 | expandIconView.setAnimationDuration(2000); 80 | ``` 81 | 82 | See [sample](https://github.com/zagum/Android-ExpandIcon/tree/master/expandicon-sample) project for more information. 83 | 84 | License 85 | ------- 86 | 87 | Copyright 2016 Evgenii Zagumennyi 88 | 89 | Licensed under the Apache License, Version 2.0 (the "License"); 90 | you may not use this file except in compliance with the License. 91 | You may obtain a copy of the License at 92 | 93 | http://www.apache.org/licenses/LICENSE-2.0 94 | 95 | Unless required by applicable law or agreed to in writing, software 96 | distributed under the License is distributed on an "AS IS" BASIS, 97 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 98 | See the License for the specific language governing permissions and 99 | limitations under the License. 100 | -------------------------------------------------------------------------------- /art/expand_icon_demo.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/zagum/Android-ExpandIcon/219fb8bfec6c4f88ac17fd729382655646f7cfe9/art/expand_icon_demo.gif -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | buildscript { 2 | repositories { 3 | jcenter() 4 | google() 5 | } 6 | dependencies { 7 | classpath 'com.android.tools.build:gradle:3.6.3' 8 | } 9 | } 10 | 11 | allprojects { 12 | repositories { 13 | jcenter() 14 | google() 15 | } 16 | } 17 | 18 | ext { 19 | compileSdkVersion = 29 20 | buildToolsVersion = '29.0.2' 21 | minSdkVersion = 15 22 | targetSdkVersion = compileSdkVersion 23 | 24 | appcompatLibVersion = '1.1.0' 25 | annotationLibVersion = '1.1.0' 26 | } 27 | 28 | task clean(type: Delete) { 29 | delete rootProject.buildDir 30 | } 31 | -------------------------------------------------------------------------------- /expandicon-sample/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | dependencies { 4 | implementation project(':expandicon') 5 | implementation("androidx.appcompat:appcompat:$appcompatLibVersion") 6 | } 7 | 8 | android { 9 | compileSdkVersion rootProject.ext.compileSdkVersion 10 | buildToolsVersion rootProject.ext.buildToolsVersion 11 | 12 | defaultConfig { 13 | applicationId "com.github.zagum.expandicon.sample" 14 | minSdkVersion rootProject.ext.minSdkVersion 15 | targetSdkVersion rootProject.ext.targetSdkVersion 16 | versionCode 1 17 | versionName "1.0" 18 | 19 | vectorDrawables.useSupportLibrary = true 20 | } 21 | } 22 | -------------------------------------------------------------------------------- /expandicon-sample/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/zagum/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 | -------------------------------------------------------------------------------- /expandicon-sample/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 5 | 6 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | -------------------------------------------------------------------------------- /expandicon-sample/src/main/java/com/github/zagum/expandicon/sample/SampleActivity.java: -------------------------------------------------------------------------------- 1 | package com.github.zagum.expandicon.sample; 2 | 3 | import android.os.Bundle; 4 | import android.view.GestureDetector; 5 | import android.view.MotionEvent; 6 | import android.view.View; 7 | 8 | import androidx.appcompat.app.AppCompatActivity; 9 | 10 | import com.github.zagum.expandicon.ExpandIconView; 11 | 12 | public class SampleActivity extends AppCompatActivity implements GestureDetector.OnGestureListener { 13 | 14 | private ExpandIconView expandIconView1; 15 | private ExpandIconView expandIconView2; 16 | private ExpandIconView expandIconView3; 17 | private ExpandIconView expandIconView4; 18 | private GestureDetector gestureDetector; 19 | private View swipeDetectionView; 20 | private View clickView; 21 | 22 | @Override 23 | protected void onCreate(Bundle savedInstanceState) { 24 | super.onCreate(savedInstanceState); 25 | setContentView(R.layout.activity_sample); 26 | 27 | expandIconView1 = (ExpandIconView) findViewById(R.id.expand_icon1); 28 | expandIconView2 = (ExpandIconView) findViewById(R.id.expand_icon2); 29 | expandIconView3 = (ExpandIconView) findViewById(R.id.expand_icon3); 30 | expandIconView4 = (ExpandIconView) findViewById(R.id.expand_icon4); 31 | 32 | expandIconView1.setFraction(.5f, false); 33 | expandIconView2.setFraction(.5f, false); 34 | 35 | expandIconView3.setAnimationDuration(2000); 36 | 37 | clickView = findViewById(R.id.click); 38 | clickView.setOnClickListener(new View.OnClickListener() { 39 | @Override 40 | public void onClick(View v) { 41 | expandIconView3.switchState(); 42 | } 43 | }); 44 | 45 | setUpSlidingContainer(); 46 | } 47 | 48 | private void setUpSlidingContainer() { 49 | gestureDetector = new GestureDetector(this, this); 50 | gestureDetector.setIsLongpressEnabled(false); 51 | 52 | swipeDetectionView = findViewById(R.id.swipe_detector); 53 | swipeDetectionView.setClickable(true); 54 | swipeDetectionView.setOnTouchListener(new View.OnTouchListener() { 55 | @Override 56 | public boolean onTouch(View v, MotionEvent event) { 57 | if (event.getAction() == MotionEvent.ACTION_UP) { 58 | expandIconView1.setFraction(.5f, true); 59 | expandIconView2.setFraction(.5f, true); 60 | expandIconView4.setFraction(.5f, true); 61 | } 62 | return gestureDetector.onTouchEvent(event); 63 | } 64 | }); 65 | } 66 | 67 | @Override 68 | public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { 69 | float fraction; 70 | if (Math.signum(distanceY) > 0) { 71 | fraction = 1f; 72 | } else { 73 | fraction = 0f; 74 | } 75 | expandIconView1.setFraction(fraction, true); 76 | expandIconView2.setFraction(fraction, true); 77 | expandIconView4.setFraction(fraction, true); 78 | return false; 79 | } 80 | 81 | @Override 82 | public boolean onDown(MotionEvent e) { 83 | return false; 84 | } 85 | 86 | @Override 87 | public boolean onSingleTapUp(MotionEvent e) { 88 | return false; 89 | } 90 | 91 | @Override 92 | public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { 93 | return false; 94 | } 95 | 96 | @Override 97 | public void onShowPress(MotionEvent e) { 98 | } 99 | 100 | @Override 101 | public void onLongPress(MotionEvent e) { 102 | } 103 | } 104 | -------------------------------------------------------------------------------- /expandicon-sample/src/main/res/layout/activity_sample.xml: -------------------------------------------------------------------------------- 1 | 9 | 10 | 13 | 14 | 24 | 25 | 39 | 40 | 53 | 54 | 55 | 56 | 59 | 60 | 66 | 67 | 73 | 74 | 75 | 76 | 77 | 83 | 84 | 96 | 97 | 103 | 104 | 105 | 106 | -------------------------------------------------------------------------------- /expandicon-sample/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/zagum/Android-ExpandIcon/219fb8bfec6c4f88ac17fd729382655646f7cfe9/expandicon-sample/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /expandicon-sample/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/zagum/Android-ExpandIcon/219fb8bfec6c4f88ac17fd729382655646f7cfe9/expandicon-sample/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /expandicon-sample/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/zagum/Android-ExpandIcon/219fb8bfec6c4f88ac17fd729382655646f7cfe9/expandicon-sample/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /expandicon-sample/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/zagum/Android-ExpandIcon/219fb8bfec6c4f88ac17fd729382655646f7cfe9/expandicon-sample/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /expandicon-sample/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/zagum/Android-ExpandIcon/219fb8bfec6c4f88ac17fd729382655646f7cfe9/expandicon-sample/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /expandicon-sample/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #FF4081 4 | #3F51B5 5 | #303F9F 6 | 7 | -------------------------------------------------------------------------------- /expandicon-sample/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | ExpandIcon 4 | Swipe finger up and down 5 | Click 6 | 7 | -------------------------------------------------------------------------------- /expandicon-sample/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 8 | 9 | 10 | -------------------------------------------------------------------------------- /expandicon/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | 3 | dependencies { 4 | implementation("androidx.annotation:annotation:$annotationLibVersion") 5 | } 6 | 7 | android { 8 | compileSdkVersion rootProject.ext.compileSdkVersion 9 | buildToolsVersion rootProject.ext.buildToolsVersion 10 | 11 | defaultConfig { 12 | minSdkVersion rootProject.ext.minSdkVersion 13 | } 14 | } 15 | -------------------------------------------------------------------------------- /expandicon/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/zagum/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 | -------------------------------------------------------------------------------- /expandicon/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /expandicon/src/main/java/com/github/zagum/expandicon/ExpandIconView.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 Evgenii Zagumennyi 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.github.zagum.expandicon; 18 | 19 | import android.animation.ArgbEvaluator; 20 | import android.animation.ValueAnimator; 21 | import android.content.Context; 22 | import android.content.res.TypedArray; 23 | import android.graphics.Canvas; 24 | import android.graphics.Color; 25 | import android.graphics.Paint; 26 | import android.graphics.Path; 27 | import android.graphics.Point; 28 | import android.os.Build; 29 | import android.util.AttributeSet; 30 | import android.view.View; 31 | import android.view.animation.DecelerateInterpolator; 32 | 33 | import androidx.annotation.FloatRange; 34 | import androidx.annotation.IntDef; 35 | import androidx.annotation.NonNull; 36 | import androidx.annotation.Nullable; 37 | 38 | import java.lang.annotation.Retention; 39 | import java.lang.annotation.RetentionPolicy; 40 | 41 | import static android.graphics.Paint.ANTI_ALIAS_FLAG; 42 | 43 | public class ExpandIconView extends View { 44 | 45 | private static final float MORE_STATE_ALPHA = -45f; 46 | private static final float LESS_STATE_ALPHA = 45f; 47 | private static final float DELTA_ALPHA = 90f; 48 | private static final float THICKNESS_PROPORTION = 5f / 36f; 49 | private static final float PADDING_PROPORTION = 4f / 24f; 50 | private static final long DEFAULT_ANIMATION_DURATION = 150; 51 | 52 | @IntDef({ 53 | MORE, 54 | LESS, 55 | INTERMEDIATE 56 | }) 57 | @Retention(RetentionPolicy.SOURCE) 58 | public @interface State { 59 | } 60 | 61 | public static final int MORE = 0; 62 | public static final int LESS = 1; 63 | private static final int INTERMEDIATE = 2; 64 | 65 | @State 66 | private int state; 67 | private float alpha = MORE_STATE_ALPHA; 68 | private float centerTranslation = 0f; 69 | @FloatRange(from = 0.f, to = 1.f) 70 | private float fraction = 0f; 71 | private float animationSpeed; 72 | 73 | private boolean switchColor = false; 74 | private int color = Color.BLACK; 75 | private final int colorMore; 76 | private final int colorLess; 77 | private final int colorIntermediate; 78 | 79 | @NonNull 80 | private final Paint paint; 81 | private final Point left = new Point(); 82 | private final Point right = new Point(); 83 | private final Point center = new Point(); 84 | private final Point tempLeft = new Point(); 85 | private final Point tempRight = new Point(); 86 | 87 | private final boolean useDefaultPadding; 88 | private int padding; 89 | 90 | private final Path path = new Path(); 91 | @Nullable 92 | private ValueAnimator arrowAnimator; 93 | 94 | public ExpandIconView(@NonNull Context context) { 95 | this(context, null); 96 | } 97 | 98 | public ExpandIconView(@NonNull Context context, @Nullable AttributeSet attrs) { 99 | this(context, attrs, 0); 100 | } 101 | 102 | public ExpandIconView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) { 103 | super(context, attrs, defStyleAttr); 104 | 105 | TypedArray array = getContext().getTheme().obtainStyledAttributes(attrs, 106 | R.styleable.ExpandIconView, 107 | 0, 0); 108 | 109 | final boolean roundedCorners; 110 | final long animationDuration; 111 | try { 112 | roundedCorners = array.getBoolean(R.styleable.ExpandIconView_eiv_roundedCorners, false); 113 | switchColor = array.getBoolean(R.styleable.ExpandIconView_eiv_switchColor, false); 114 | color = array.getColor(R.styleable.ExpandIconView_eiv_color, Color.BLACK); 115 | colorMore = array.getColor(R.styleable.ExpandIconView_eiv_colorMore, Color.BLACK); 116 | colorLess = array.getColor(R.styleable.ExpandIconView_eiv_colorLess, Color.BLACK); 117 | colorIntermediate = array.getColor(R.styleable.ExpandIconView_eiv_colorIntermediate, -1); 118 | animationDuration = array.getInteger(R.styleable.ExpandIconView_eiv_animationDuration, (int) DEFAULT_ANIMATION_DURATION); 119 | padding = array.getDimensionPixelSize(R.styleable.ExpandIconView_eiv_padding, -1); 120 | useDefaultPadding = (padding == -1); 121 | } finally { 122 | array.recycle(); 123 | } 124 | 125 | { 126 | paint = new Paint(ANTI_ALIAS_FLAG); 127 | paint.setColor(color); 128 | paint.setStyle(Paint.Style.STROKE); 129 | paint.setDither(true); 130 | if (roundedCorners) { 131 | paint.setStrokeJoin(Paint.Join.ROUND); 132 | paint.setStrokeCap(Paint.Cap.ROUND); 133 | } 134 | } 135 | 136 | animationSpeed = DELTA_ALPHA / animationDuration; 137 | setState(MORE, false); 138 | } 139 | 140 | public void switchState() { 141 | switchState(true); 142 | } 143 | 144 | /** 145 | * Changes state and updates view 146 | * 147 | * @param animate Indicates thaw state will be changed with animation or not 148 | */ 149 | public void switchState(boolean animate) { 150 | final int newState; 151 | switch (state) { 152 | case MORE: 153 | newState = LESS; 154 | break; 155 | case LESS: 156 | newState = MORE; 157 | break; 158 | case INTERMEDIATE: 159 | newState = getFinalStateByFraction(); 160 | break; 161 | default: 162 | throw new IllegalArgumentException("Unknown state [" + state + "]"); 163 | } 164 | setState(newState, animate); 165 | } 166 | 167 | /** 168 | * Set one of two states and updates view 169 | * 170 | * @param state {@link #MORE} or {@link #LESS} 171 | * @param animate Indicates thaw state will be changed with animation or not 172 | * @throws IllegalArgumentException if {@param state} is invalid 173 | */ 174 | public void setState(@State int state, boolean animate) { 175 | this.state = state; 176 | if (state == MORE) { 177 | fraction = 0f; 178 | } else if (state == LESS) { 179 | fraction = 1f; 180 | } else { 181 | throw new IllegalArgumentException("Unknown state, must be one of STATE_MORE = 0, STATE_LESS = 1"); 182 | } 183 | updateArrow(animate); 184 | } 185 | 186 | /** 187 | * Set current fraction for arrow and updates view 188 | * 189 | * @param fraction Must be value from 0f to 1f {@link #MORE} state value is 0f, {@link #LESS} 190 | * state value is 1f 191 | * @throws IllegalArgumentException if fraction is less than 0f or more than 1f 192 | */ 193 | public void setFraction(@FloatRange(from = 0.f, to = 1.f) float fraction, boolean animate) { 194 | if (fraction < 0f || fraction > 1f) { 195 | throw new IllegalArgumentException("Fraction value must be from 0 to 1f, fraction=" + fraction); 196 | } 197 | 198 | if (this.fraction == fraction) { 199 | return; 200 | } 201 | 202 | this.fraction = fraction; 203 | if (fraction == 0f) { 204 | state = MORE; 205 | } else if (fraction == 1f) { 206 | state = LESS; 207 | } else { 208 | state = INTERMEDIATE; 209 | } 210 | 211 | updateArrow(animate); 212 | } 213 | 214 | /** 215 | * Set duration of icon animation from state {@link #MORE} to state {@link #LESS} 216 | * 217 | * @param animationDuration 218 | */ 219 | public void setAnimationDuration(long animationDuration) { 220 | animationSpeed = DELTA_ALPHA / animationDuration; 221 | } 222 | 223 | @Override 224 | protected void onDraw(Canvas canvas) { 225 | super.onDraw(canvas); 226 | canvas.translate(0, centerTranslation); 227 | canvas.drawPath(path, paint); 228 | } 229 | 230 | @Override 231 | protected void onSizeChanged(int width, int height, int oldWidth, int oldHeight) { 232 | super.onSizeChanged(width, height, oldWidth, oldHeight); 233 | calculateArrowMetrics(width, height); 234 | updateArrowPath(); 235 | } 236 | 237 | private void calculateArrowMetrics(int width, int height) { 238 | final int arrowMaxWidth = (height >= width ? width : height); 239 | if (useDefaultPadding) { 240 | padding = (int) (PADDING_PROPORTION * arrowMaxWidth); 241 | } 242 | final int arrowWidth = arrowMaxWidth - 2 * padding; 243 | float thickness = (int) (arrowWidth * THICKNESS_PROPORTION); 244 | paint.setStrokeWidth(thickness); 245 | 246 | center.set(width / 2, height / 2); 247 | left.set(center.x - arrowWidth / 2, center.y); 248 | right.set(center.x + arrowWidth / 2, center.y); 249 | } 250 | 251 | private void updateArrow(boolean animate) { 252 | float toAlpha = MORE_STATE_ALPHA + (fraction * DELTA_ALPHA); 253 | if (animate) { 254 | animateArrow(toAlpha); 255 | } else { 256 | cancelAnimation(); 257 | alpha = toAlpha; 258 | if (switchColor) { 259 | updateColor(new ArgbEvaluator()); 260 | } 261 | updateArrowPath(); 262 | invalidate(); 263 | } 264 | } 265 | 266 | private void updateArrowPath() { 267 | path.reset(); 268 | if (left != null && right != null) { 269 | rotate(left, -alpha, tempLeft); 270 | rotate(right, alpha, tempRight); 271 | centerTranslation = (center.y - tempLeft.y) / 2; 272 | path.moveTo(tempLeft.x, tempLeft.y); 273 | path.lineTo(center.x, center.y); 274 | path.lineTo(tempRight.x, tempRight.y); 275 | } 276 | } 277 | 278 | private void animateArrow(float toAlpha) { 279 | cancelAnimation(); 280 | 281 | final ValueAnimator valueAnimator = ValueAnimator.ofFloat(alpha, toAlpha); 282 | valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 283 | private final ArgbEvaluator colorEvaluator = new ArgbEvaluator(); 284 | 285 | @Override 286 | public void onAnimationUpdate(ValueAnimator valueAnimator) { 287 | alpha = (float) valueAnimator.getAnimatedValue(); 288 | updateArrowPath(); 289 | if (switchColor) { 290 | updateColor(colorEvaluator); 291 | } 292 | postInvalidateOnAnimationCompat(); 293 | } 294 | }); 295 | valueAnimator.setInterpolator(new DecelerateInterpolator()); 296 | valueAnimator.setDuration(calculateAnimationDuration(toAlpha)); 297 | valueAnimator.start(); 298 | 299 | arrowAnimator = valueAnimator; 300 | } 301 | 302 | private void cancelAnimation() { 303 | if (arrowAnimator != null && arrowAnimator.isRunning()) { 304 | arrowAnimator.cancel(); 305 | } 306 | } 307 | 308 | private void updateColor(@NonNull ArgbEvaluator colorEvaluator) { 309 | float fraction; 310 | int colorFrom; 311 | int colorTo; 312 | if (colorIntermediate != -1) { 313 | colorFrom = alpha <= 0f ? colorMore : colorIntermediate; 314 | colorTo = alpha <= 0f ? colorIntermediate : colorLess; 315 | fraction = alpha <= 0 ? (1 + alpha / 45f) : alpha / 45f; 316 | } else { 317 | colorFrom = colorMore; 318 | colorTo = colorLess; 319 | fraction = (alpha + 45f) / 90f; 320 | } 321 | color = (int) colorEvaluator.evaluate(fraction, colorFrom, colorTo); 322 | paint.setColor(color); 323 | } 324 | 325 | private long calculateAnimationDuration(float toAlpha) { 326 | return (long) (Math.abs(toAlpha - alpha) / animationSpeed); 327 | } 328 | 329 | private void rotate(@NonNull Point startPosition, double degrees, @NonNull Point target) { 330 | double angle = Math.toRadians(degrees); 331 | int x = (int) (center.x + (startPosition.x - center.x) * Math.cos(angle) - 332 | (startPosition.y - center.y) * Math.sin(angle)); 333 | 334 | int y = (int) (center.y + (startPosition.x - center.x) * Math.sin(angle) + 335 | (startPosition.y - center.y) * Math.cos(angle)); 336 | 337 | target.set(x, y); 338 | } 339 | 340 | @State 341 | private int getFinalStateByFraction() { 342 | if (fraction <= .5f) { 343 | return MORE; 344 | } else { 345 | return LESS; 346 | } 347 | } 348 | 349 | private void postInvalidateOnAnimationCompat() { 350 | final long fakeFrameTime = 10; 351 | if (Build.VERSION.SDK_INT > Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) { 352 | postInvalidateOnAnimation(); 353 | } else { 354 | postInvalidateDelayed(fakeFrameTime); 355 | } 356 | } 357 | } 358 | -------------------------------------------------------------------------------- /expandicon/src/main/res/values/attrs.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | -------------------------------------------------------------------------------- /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 | 19 | android.useAndroidX=true 20 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/zagum/Android-ExpandIcon/219fb8bfec6c4f88ac17fd729382655646f7cfe9/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Fri May 22 11:37:18 CEST 2020 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip 7 | -------------------------------------------------------------------------------- /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 ':expandicon', ':expandicon-sample' --------------------------------------------------------------------------------