├── .DS_Store ├── .gitignore ├── .idea ├── .name ├── compiler.xml ├── copyright │ └── profiles_settings.xml ├── encodings.xml ├── gradle.xml ├── libraries │ ├── android_android_25.xml │ ├── animated_vector_drawable_25_2_0.xml │ ├── appcompat_v7_25_2_0.xml │ ├── espresso_core_2_2_2.xml │ ├── espresso_idling_resource_2_2_2.xml │ ├── exposed_instrumentation_api_publish_0_5.xml │ ├── hamcrest_core_1_3.xml │ ├── hamcrest_integration_1_3.xml │ ├── hamcrest_library_1_3.xml │ ├── javawriter_2_1_1.xml │ ├── javax_annotation_api_1_2.xml │ ├── javax_inject_1.xml │ ├── jsr305_2_0_1.xml │ ├── junit_4_12.xml │ ├── rules_0_5.xml │ ├── runner_0_5.xml │ ├── support_annotations_25_2_0.xml │ ├── support_compat_25_2_0.xml │ ├── support_core_ui_25_2_0.xml │ ├── support_core_utils_25_2_0.xml │ ├── support_fragment_25_2_0.xml │ ├── support_media_compat_25_2_0.xml │ ├── support_v4_25_2_0.xml │ └── support_vector_drawable_25_2_0.xml ├── misc.xml ├── modules.xml ├── runConfigurations.xml └── vcs.xml ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── lcw │ │ └── view │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── lcw │ │ │ └── view │ │ │ ├── BezierCubicView.java │ │ │ ├── BezierMoveView.java │ │ │ ├── BezierQuadView.java │ │ │ ├── BezierWaveView.java │ │ │ ├── HeartView.java │ │ │ ├── MainActivity.java │ │ │ ├── TestActivity.java │ │ │ ├── shoppingcart │ │ │ ├── GoodsView.java │ │ │ └── ShoppingCartActivity.java │ │ │ └── starview │ │ │ ├── StarViewActivity.java │ │ │ └── StarViewGroup.java │ └── res │ │ ├── layout │ │ ├── activity_main.xml │ │ ├── activity_shoppingcart.xml │ │ ├── activity_starview.xml │ │ └── activity_test.xml │ │ ├── mipmap-hdpi │ │ └── ic_launcher.png │ │ ├── mipmap-mdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xhdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xxhdpi │ │ ├── heart.png │ │ ├── ic_launcher.png │ │ ├── icon_shop_add.png │ │ ├── icon_shop_goods.jpg │ │ ├── icon_shop_reduce.png │ │ ├── icon_shop_shopcart.png │ │ └── icon_star.png │ │ ├── mipmap-xxxhdpi │ │ └── ic_launcher.png │ │ ├── values-w820dp │ │ └── dimens.xml │ │ └── values │ │ ├── colors.xml │ │ ├── dimens.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── lcw │ └── view │ └── ExampleUnitTest.java ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.DS_Store: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Lichenwei-Dev/BezierView/a24e0f8eb590686762d8ad4f45ebc6794631fbbf/.DS_Store -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Built application files 2 | *.apk 3 | *.ap_ 4 | 5 | # Files for the ART/Dalvik VM 6 | *.dex 7 | 8 | # Java class files 9 | *.class 10 | 11 | # Generated files 12 | bin/ 13 | gen/ 14 | out/ 15 | 16 | # Gradle files 17 | .gradle/ 18 | build/ 19 | 20 | # Local configuration file (sdk path, etc) 21 | local.properties 22 | 23 | # Proguard folder generated by Eclipse 24 | proguard/ 25 | 26 | # Log Files 27 | *.log 28 | 29 | # Android Studio Navigation editor temp files 30 | .navigation/ 31 | 32 | # Android Studio captures folder 33 | captures/ 34 | 35 | # Intellij 36 | *.iml 37 | .idea/workspace.xml 38 | 39 | # Keystore files 40 | *.jks 41 | -------------------------------------------------------------------------------- /.idea/.name: -------------------------------------------------------------------------------- 1 | BezierView -------------------------------------------------------------------------------- /.idea/compiler.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | -------------------------------------------------------------------------------- /.idea/copyright/profiles_settings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | -------------------------------------------------------------------------------- /.idea/encodings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 23 | 24 | -------------------------------------------------------------------------------- /.idea/libraries/android_android_25.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /.idea/libraries/animated_vector_drawable_25_2_0.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | -------------------------------------------------------------------------------- /.idea/libraries/appcompat_v7_25_2_0.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /.idea/libraries/espresso_core_2_2_2.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | -------------------------------------------------------------------------------- /.idea/libraries/espresso_idling_resource_2_2_2.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | -------------------------------------------------------------------------------- /.idea/libraries/exposed_instrumentation_api_publish_0_5.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | -------------------------------------------------------------------------------- /.idea/libraries/hamcrest_core_1_3.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /.idea/libraries/hamcrest_integration_1_3.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /.idea/libraries/hamcrest_library_1_3.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /.idea/libraries/javawriter_2_1_1.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /.idea/libraries/javax_annotation_api_1_2.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /.idea/libraries/javax_inject_1.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /.idea/libraries/jsr305_2_0_1.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /.idea/libraries/junit_4_12.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /.idea/libraries/rules_0_5.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /.idea/libraries/runner_0_5.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /.idea/libraries/support_annotations_25_2_0.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /.idea/libraries/support_compat_25_2_0.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /.idea/libraries/support_core_ui_25_2_0.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /.idea/libraries/support_core_utils_25_2_0.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /.idea/libraries/support_fragment_25_2_0.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /.idea/libraries/support_media_compat_25_2_0.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /.idea/libraries/support_v4_25_2_0.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | -------------------------------------------------------------------------------- /.idea/libraries/support_vector_drawable_25_2_0.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 19 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 46 | 47 | 48 | 49 | 50 | 1.8 51 | 52 | 57 | 58 | 59 | 60 | 61 | 62 | -------------------------------------------------------------------------------- /.idea/modules.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | 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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 | # BezierView 2 | 练习贝塞尔曲线的小例子,具体详情请见博客: 3 | 4 | [Android开发-贝塞尔曲线初体验](http://www.jianshu.com/p/d43f19b384d8) 5 | 6 | [Android开发之贝塞尔曲线进阶篇（仿直播送礼物，饿了么购物车动画）](http://www.jianshu.com/p/f0d47b6c1e94) -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 25 5 | buildToolsVersion "25.0.0" 6 | defaultConfig { 7 | applicationId "com.lcw.view" 8 | minSdkVersion 16 9 | targetSdkVersion 25 10 | versionCode 1 11 | versionName "1.0" 12 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 13 | } 14 | buildTypes { 15 | release { 16 | minifyEnabled false 17 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 18 | } 19 | } 20 | } 21 | 22 | dependencies { 23 | compile fileTree(dir: 'libs', include: ['*.jar']) 24 | androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { 25 | exclude group: 'com.android.support', module: 'support-annotations' 26 | }) 27 | compile 'com.android.support:appcompat-v7:25.2.0' 28 | testCompile 'junit:junit:4.12' 29 | } 30 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /Users/lichenwei/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 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/lcw/view/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package com.lcw.view; 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 | * Instrumentation 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() throws Exception { 21 | // Context of the app under test. 22 | Context appContext = InstrumentationRegistry.getTargetContext(); 23 | 24 | assertEquals("com.lcw.view", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/view/BezierCubicView.java: -------------------------------------------------------------------------------- 1 | package com.lcw.view; 2 | 3 | import android.content.Context; 4 | import android.graphics.Canvas; 5 | import android.graphics.Color; 6 | import android.graphics.Paint; 7 | import android.graphics.Path; 8 | import android.util.AttributeSet; 9 | import android.util.DisplayMetrics; 10 | import android.view.MotionEvent; 11 | import android.view.View; 12 | import android.view.WindowManager; 13 | 14 | /** 15 | * 自定义View(三阶贝塞尔曲线) 16 | * Create by: chenwei.li 17 | * Date: 2017/4/21 18 | * Time: 下午11:47 19 | * Email: lichenwei.me@foxmail.com 20 | */ 21 | 22 | public class BezierCubicView extends View { 23 | 24 | //开始点和结束点 25 | private int mStartXPoint; 26 | private int mStartYPoint; 27 | private int mEndXPoint; 28 | private int mEndYPoint; 29 | //控制点 30 | private int mConOneXPoint; 31 | private int mConOneYPoint; 32 | private int mConTwoXPoint; 33 | private int mConTwoYPoint; 34 | 35 | //路径和画笔 36 | private Path mPath; 37 | private Paint mPaint; 38 | 39 | 40 | //辅助线画笔,写字画笔 41 | private Paint mLinePaint; 42 | private Paint mTextPaint; 43 | 44 | //标志是否按下 45 | private boolean mFlag; 46 | 47 | 48 | public BezierCubicView(Context context) { 49 | super(context); 50 | init(context); 51 | } 52 | 53 | 54 | public BezierCubicView(Context context, AttributeSet attrs) { 55 | super(context, attrs); 56 | init(context); 57 | } 58 | 59 | public BezierCubicView(Context context, AttributeSet attrs, int defStyleAttr) { 60 | super(context, attrs, defStyleAttr); 61 | init(context); 62 | } 63 | 64 | /** 65 | * 进行初始化的一些操作 66 | */ 67 | private void init(Context context) { 68 | //获取屏幕的宽高 69 | WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); 70 | DisplayMetrics displayMetrics = new DisplayMetrics(); 71 | windowManager.getDefaultDisplay().getMetrics(displayMetrics); 72 | int screenHeight = displayMetrics.heightPixels; 73 | int screenWidth = displayMetrics.widthPixels; 74 | 75 | //设置各点的位置 76 | mStartXPoint = screenWidth / 4; 77 | mStartYPoint = screenHeight / 2; 78 | mEndXPoint = screenWidth * 3 / 4; 79 | mEndYPoint = screenHeight / 2; 80 | mConOneXPoint = screenWidth / 2 - 300; 81 | mConOneYPoint = screenHeight / 2 - 400; 82 | mConTwoXPoint = screenWidth / 2 + 100; 83 | mConTwoYPoint = screenHeight / 2 - 400; 84 | //路径,画笔设置 85 | mPath = new Path(); 86 | mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 87 | mPaint.setColor(Color.BLUE); 88 | mPaint.setStyle(Paint.Style.STROKE); 89 | mPaint.setStrokeWidth(8); 90 | 91 | //辅助线画笔 92 | mLinePaint = new Paint(Paint.ANTI_ALIAS_FLAG); 93 | mLinePaint.setColor(Color.GRAY); 94 | mLinePaint.setStyle(Paint.Style.STROKE); 95 | mLinePaint.setStrokeWidth(3); 96 | 97 | //写字画笔 98 | mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 99 | mTextPaint.setColor(Color.BLACK); 100 | mTextPaint.setStyle(Paint.Style.STROKE); 101 | mTextPaint.setTextSize(20); 102 | 103 | 104 | } 105 | 106 | @Override 107 | protected void onDraw(Canvas canvas) { 108 | super.onDraw(canvas); 109 | mPath.reset(); 110 | //贝塞尔曲线 111 | mPath.moveTo(mStartXPoint, mStartYPoint); 112 | mPath.cubicTo(mConOneXPoint, mConOneYPoint, mConTwoXPoint, mConTwoYPoint, mEndXPoint, mEndYPoint); 113 | canvas.drawPath(mPath, mPaint); 114 | 115 | //辅助线 116 | canvas.drawLine(mStartXPoint, mStartYPoint, mConOneXPoint, mConOneYPoint, mLinePaint); 117 | canvas.drawLine(mConOneXPoint, mConOneYPoint, mConTwoXPoint, mConTwoYPoint, mLinePaint); 118 | canvas.drawLine(mConTwoXPoint, mConTwoYPoint, mEndXPoint, mEndYPoint, mLinePaint); 119 | 120 | //文字 121 | canvas.drawPoint(mStartXPoint, mStartYPoint, mPaint); 122 | canvas.drawText("起始点", mStartXPoint, mStartYPoint + 30, mTextPaint); 123 | canvas.drawPoint(mEndXPoint, mEndYPoint, mPaint); 124 | canvas.drawText("结束点", mEndXPoint, mEndYPoint + 30, mTextPaint); 125 | canvas.drawPoint(mConOneXPoint, mConOneYPoint, mPaint); 126 | canvas.drawText("控制点1", mConOneXPoint, mConOneYPoint - 30, mTextPaint); 127 | canvas.drawPoint(mConTwoXPoint, mConTwoYPoint, mPaint); 128 | canvas.drawText("控制点2", mConTwoXPoint, mConTwoYPoint - 30, mTextPaint); 129 | 130 | 131 | } 132 | 133 | @Override 134 | public boolean onTouchEvent(MotionEvent event) { 135 | switch (event.getAction() & MotionEvent.ACTION_MASK) { 136 | case MotionEvent.ACTION_POINTER_DOWN: 137 | mFlag = true; 138 | break; 139 | case MotionEvent.ACTION_POINTER_UP: 140 | mFlag = false; 141 | break; 142 | case MotionEvent.ACTION_MOVE: 143 | mConOneXPoint = (int) event.getX(0); 144 | mConOneYPoint = (int) event.getY(0); 145 | if (mFlag) { 146 | mConTwoXPoint = (int) event.getY(1); 147 | mConTwoYPoint = (int) event.getY(1); 148 | } 149 | invalidate(); 150 | break; 151 | } 152 | return true; 153 | } 154 | } 155 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/view/BezierMoveView.java: -------------------------------------------------------------------------------- 1 | package com.lcw.view; 2 | 3 | import android.animation.TypeEvaluator; 4 | import android.animation.ValueAnimator; 5 | import android.content.Context; 6 | import android.graphics.Canvas; 7 | import android.graphics.Color; 8 | import android.graphics.Paint; 9 | import android.graphics.Path; 10 | import android.graphics.Point; 11 | import android.util.AttributeSet; 12 | import android.view.View; 13 | import android.view.animation.AccelerateDecelerateInterpolator; 14 | 15 | /** 16 | * 自定义View(二阶贝塞尔曲线滑动动画) 17 | * Create by: chenwei.li 18 | * Date: 2017/4/21 19 | * Time: 下午11:47 20 | * Email: lichenwei.me@foxmail.com 21 | */ 22 | 23 | public class BezierMoveView extends View implements View.OnClickListener { 24 | 25 | //开始点和结束点 26 | private int mStartXPoint; 27 | private int mStartYPoint; 28 | private int mEndXPoint; 29 | private int mEndYPoint; 30 | //控制点 31 | private int mConXPoint; 32 | private int mConYPoint; 33 | //移动点 34 | private int mMoveXPoint; 35 | private int mMoveYPoint; 36 | 37 | //路径和画笔 38 | private Path mPath; 39 | private Paint mPaint; 40 | 41 | //圆形半径，画笔 42 | private int mCircleRadius; 43 | private Paint mCirlcePaint; 44 | 45 | 46 | public BezierMoveView(Context context) { 47 | super(context); 48 | init(context); 49 | } 50 | 51 | 52 | public BezierMoveView(Context context, AttributeSet attrs) { 53 | super(context, attrs); 54 | init(context); 55 | } 56 | 57 | public BezierMoveView(Context context, AttributeSet attrs, int defStyleAttr) { 58 | super(context, attrs, defStyleAttr); 59 | init(context); 60 | } 61 | 62 | /** 63 | * 进行初始化的一些操作 64 | */ 65 | private void init(Context context) { 66 | 67 | //设置各点的位置 68 | mStartXPoint = 100; 69 | mStartYPoint = 100; 70 | mEndXPoint = 600; 71 | mEndYPoint = 600; 72 | mConXPoint = 400; 73 | mConYPoint = 0; 74 | mMoveXPoint = 100; 75 | mMoveYPoint = 100; 76 | 77 | //路径,画笔设置 78 | mPath = new Path(); 79 | mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 80 | mPaint.setColor(Color.BLUE); 81 | mPaint.setStyle(Paint.Style.STROKE); 82 | mPaint.setStrokeWidth(8); 83 | 84 | mCircleRadius = 20; 85 | mCirlcePaint = new Paint(Paint.ANTI_ALIAS_FLAG); 86 | mCirlcePaint.setColor(Color.BLUE); 87 | mCirlcePaint.setStyle(Paint.Style.FILL); 88 | 89 | setOnClickListener(this); 90 | 91 | 92 | } 93 | 94 | @Override 95 | protected void onDraw(Canvas canvas) { 96 | super.onDraw(canvas); 97 | mPath.reset(); 98 | //贝塞尔曲线 99 | mPath.moveTo(mStartXPoint, mStartYPoint); 100 | mPath.quadTo(mConXPoint, mConYPoint, mEndXPoint, mEndYPoint); 101 | canvas.drawPath(mPath, mPaint); 102 | 103 | //画圆 104 | canvas.drawCircle(mStartXPoint, mStartYPoint, mCircleRadius, mCirlcePaint); 105 | canvas.drawCircle(mEndXPoint, mEndYPoint, mCircleRadius, mCirlcePaint); 106 | canvas.drawCircle(mEndXPoint, mEndYPoint, mCircleRadius, mCirlcePaint); 107 | 108 | } 109 | 110 | @Override 111 | public void onClick(View v) { 112 | ValueAnimator valueAnimator = ValueAnimator.ofObject(new CirclePointEvaluator(), new Point(mStartXPoint, mStartYPoint), 113 | new Point(mEndXPoint, mEndYPoint)); 114 | valueAnimator.setDuration(600); 115 | valueAnimator.setInterpolator(new AccelerateDecelerateInterpolator()); 116 | valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 117 | @Override 118 | public void onAnimationUpdate(ValueAnimator animation) { 119 | Point point = (Point) animation.getAnimatedValue(); 120 | mMoveXPoint = point.x; 121 | mMoveYPoint = point.y; 122 | invalidate(); 123 | } 124 | }); 125 | valueAnimator.start(); 126 | 127 | } 128 | 129 | /** 130 | * 自定义Evaluator 131 | */ 132 | public class CirclePointEvaluator implements TypeEvaluator { 133 | 134 | /** 135 | * @param t 当前动画进度 136 | * @param startValue 开始值 137 | * @param endValue 结束值 138 | * @return 139 | */ 140 | @Override 141 | public Object evaluate(float t, Object startValue, Object endValue) { 142 | 143 | Point startPoint = (Point) startValue; 144 | Point endPoint = (Point) endValue; 145 | 146 | float temp = 1 - t; 147 | 148 | int x = (int) (temp * temp * startPoint.x + 2 * t * temp * mConXPoint + t * t * endPoint.x); 149 | int y = (int) (temp * temp * startPoint.y + 2 * t * temp * mConYPoint + t * t * endPoint.y); 150 | 151 | return new Point(x,y); 152 | } 153 | 154 | } 155 | } 156 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/view/BezierQuadView.java: -------------------------------------------------------------------------------- 1 | package com.lcw.view; 2 | 3 | import android.content.Context; 4 | import android.graphics.Canvas; 5 | import android.graphics.Color; 6 | import android.graphics.Paint; 7 | import android.graphics.Path; 8 | import android.util.AttributeSet; 9 | import android.util.DisplayMetrics; 10 | import android.view.MotionEvent; 11 | import android.view.View; 12 | import android.view.WindowManager; 13 | 14 | /** 15 | * 自定义View(二阶贝塞尔曲线) 16 | * Create by: chenwei.li 17 | * Date: 2017/4/21 18 | * Time: 下午11:47 19 | * Email: lichenwei.me@foxmail.com 20 | */ 21 | 22 | public class BezierQuadView extends View { 23 | 24 | //开始点和结束点 25 | private int mStartXPoint; 26 | private int mStartYPoint; 27 | private int mEndXPoint; 28 | private int mEndYPoint; 29 | //控制点 30 | private int mConXPoint; 31 | private int mConYPoint; 32 | 33 | //路径和画笔 34 | private Path mPath; 35 | private Paint mPaint; 36 | 37 | 38 | //辅助线画笔,写字画笔 39 | private Paint mLinePaint; 40 | private Paint mTextPaint; 41 | 42 | 43 | public BezierQuadView(Context context) { 44 | super(context); 45 | init(context); 46 | } 47 | 48 | 49 | public BezierQuadView(Context context, AttributeSet attrs) { 50 | super(context, attrs); 51 | init(context); 52 | } 53 | 54 | public BezierQuadView(Context context, AttributeSet attrs, int defStyleAttr) { 55 | super(context, attrs, defStyleAttr); 56 | init(context); 57 | } 58 | 59 | /** 60 | * 进行初始化的一些操作 61 | */ 62 | private void init(Context context) { 63 | //获取屏幕的宽高 64 | WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); 65 | DisplayMetrics displayMetrics = new DisplayMetrics(); 66 | windowManager.getDefaultDisplay().getMetrics(displayMetrics); 67 | int screenHeight = displayMetrics.heightPixels; 68 | int screenWidth = displayMetrics.widthPixels; 69 | 70 | //设置各点的位置 71 | mStartXPoint = screenWidth / 4; 72 | mStartYPoint = screenHeight / 2; 73 | mEndXPoint = screenWidth * 3 / 4; 74 | mEndYPoint = screenHeight / 2; 75 | mConXPoint = screenWidth / 2; 76 | mConYPoint = screenHeight / 2 - 400; 77 | //路径,画笔设置 78 | mPath = new Path(); 79 | mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 80 | mPaint.setColor(Color.BLUE); 81 | mPaint.setStyle(Paint.Style.STROKE); 82 | mPaint.setStrokeWidth(8); 83 | 84 | //辅助线画笔 85 | mLinePaint = new Paint(Paint.ANTI_ALIAS_FLAG); 86 | mLinePaint.setColor(Color.GRAY); 87 | mLinePaint.setStyle(Paint.Style.STROKE); 88 | mLinePaint.setStrokeWidth(3); 89 | 90 | //写字画笔 91 | mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 92 | mTextPaint.setColor(Color.BLACK); 93 | mTextPaint.setStyle(Paint.Style.STROKE); 94 | mTextPaint.setTextSize(20); 95 | 96 | 97 | } 98 | 99 | @Override 100 | protected void onDraw(Canvas canvas) { 101 | super.onDraw(canvas); 102 | mPath.reset(); 103 | //贝塞尔曲线 104 | mPath.moveTo(mStartXPoint, mStartYPoint); 105 | mPath.quadTo(mConXPoint, mConYPoint, mEndXPoint, mEndYPoint); 106 | canvas.drawPath(mPath, mPaint); 107 | 108 | //辅助线 109 | canvas.drawLine(mStartXPoint, mStartYPoint, mConXPoint, mConYPoint, mLinePaint); 110 | canvas.drawLine(mConXPoint, mConYPoint, mEndXPoint, mEndYPoint, mLinePaint); 111 | 112 | //文字 113 | canvas.drawPoint(mStartXPoint, mStartYPoint, mPaint); 114 | canvas.drawText("起始点", mStartXPoint, mStartYPoint + 30, mTextPaint); 115 | canvas.drawPoint(mEndXPoint, mEndYPoint, mPaint); 116 | canvas.drawText("结束点", mEndXPoint, mEndYPoint + 30, mTextPaint); 117 | canvas.drawPoint(mConXPoint, mConYPoint, mPaint); 118 | canvas.drawText("控制点", mConXPoint, mConYPoint - 30, mTextPaint); 119 | 120 | } 121 | 122 | @Override 123 | public boolean onTouchEvent(MotionEvent event) { 124 | switch (event.getAction()){ 125 | case MotionEvent.ACTION_MOVE: 126 | mConXPoint= (int) event.getX(); 127 | mConYPoint=(int)event.getY(); 128 | invalidate(); 129 | break; 130 | } 131 | return true; 132 | } 133 | } 134 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/view/BezierWaveView.java: -------------------------------------------------------------------------------- 1 | package com.lcw.view; 2 | 3 | import android.animation.ValueAnimator; 4 | import android.content.Context; 5 | import android.graphics.Canvas; 6 | import android.graphics.Color; 7 | import android.graphics.Paint; 8 | import android.graphics.Path; 9 | import android.util.AttributeSet; 10 | import android.util.DisplayMetrics; 11 | import android.util.Log; 12 | import android.view.View; 13 | import android.view.WindowManager; 14 | import android.view.animation.LinearInterpolator; 15 | 16 | /** 17 | * 自定义View(波浪) 18 | * Create by: chenwei.li 19 | * Date: 2017/4/21 20 | * Time: 下午11:47 21 | * Email: lichenwei.me@foxmail.com 22 | */ 23 | 24 | public class BezierWaveView extends View { 25 | 26 | //路径和画笔 27 | private Path mPath; 28 | private Paint mPaint; 29 | 30 | //记录屏幕的宽高 31 | private int mScreenHeight; 32 | private int mScreenWidth; 33 | 34 | private int mOffset; 35 | 36 | 37 | public BezierWaveView(Context context) { 38 | super(context); 39 | init(context); 40 | } 41 | 42 | 43 | public BezierWaveView(Context context, AttributeSet attrs) { 44 | super(context, attrs); 45 | init(context); 46 | } 47 | 48 | public BezierWaveView(Context context, AttributeSet attrs, int defStyleAttr) { 49 | super(context, attrs, defStyleAttr); 50 | init(context); 51 | 52 | } 53 | 54 | /** 55 | * 进行初始化的一些操作 56 | */ 57 | private void init(Context context) { 58 | //获取屏幕的宽高 59 | WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); 60 | DisplayMetrics displayMetrics = new DisplayMetrics(); 61 | windowManager.getDefaultDisplay().getMetrics(displayMetrics); 62 | mScreenHeight = displayMetrics.heightPixels; 63 | mScreenWidth = displayMetrics.widthPixels; 64 | 65 | //路径,画笔设置 66 | mPath = new Path(); 67 | mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 68 | mPaint.setColor(Color.BLUE); 69 | mPaint.setStyle(Paint.Style.FILL); 70 | mPaint.setStrokeWidth(8); 71 | 72 | setViewanimator(); 73 | 74 | 75 | } 76 | 77 | @Override 78 | protected void onDraw(Canvas canvas) { 79 | super.onDraw(canvas); 80 | mPath.reset(); 81 | 82 | 83 | //贝塞尔曲线 84 | mPath.moveTo(-mScreenWidth + mOffset, mScreenHeight / 2); 85 | 86 | // mPath.quadTo(-mScreenWidth * 3 / 4 + mOffset, mScreenHeight / 2 - 100, -mScreenWidth / 2 + mOffset, mScreenHeight / 2); 87 | // mPath.quadTo(-mScreenWidth / 4 + mOffset, mScreenHeight / 2 + 100, 0 + mOffset, mScreenHeight / 2); 88 | // mPath.quadTo(mScreenWidth / 4 + mOffset, mScreenHeight / 2 - 100, mScreenWidth / 2 + mOffset, mScreenHeight / 2); 89 | // mPath.quadTo(mScreenWidth * 3 / 4 + mOffset, mScreenHeight / 2 + 100, mScreenWidth + mOffset, mScreenHeight / 2); 90 | 91 | //简化写法 92 | for (int i = 0; i < 2; i++) { 93 | mPath.quadTo(-mScreenWidth * 3 / 4 + (mScreenWidth * i) + mOffset, mScreenHeight / 2 - 100, -mScreenWidth / 2 + (mScreenWidth * i) + mOffset, mScreenHeight / 2); 94 | mPath.quadTo(-mScreenWidth / 4 + (mScreenWidth * i) + mOffset, mScreenHeight / 2 + 100, +(mScreenWidth * i) + mOffset, mScreenHeight / 2); 95 | } 96 | 97 | //空白部分填充 98 | mPath.lineTo(mScreenWidth, mScreenHeight); 99 | mPath.lineTo(0, mScreenHeight); 100 | 101 | canvas.drawPath(mPath, mPaint); 102 | 103 | 104 | } 105 | 106 | /** 107 | * 设置动画效果 108 | */ 109 | private void setViewanimator() { 110 | ValueAnimator valueAnimator = ValueAnimator.ofInt(0, mScreenWidth); 111 | valueAnimator.setDuration(1200); 112 | valueAnimator.setRepeatCount(ValueAnimator.INFINITE); 113 | valueAnimator.setInterpolator(new LinearInterpolator()); 114 | valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 115 | @Override 116 | public void onAnimationUpdate(ValueAnimator animation) { 117 | mOffset = (int) animation.getAnimatedValue(); 118 | invalidate(); 119 | } 120 | }); 121 | valueAnimator.start(); 122 | } 123 | 124 | 125 | } 126 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/view/HeartView.java: -------------------------------------------------------------------------------- 1 | package com.lcw.view; 2 | 3 | import android.content.Context; 4 | import android.graphics.Bitmap; 5 | import android.graphics.BitmapFactory; 6 | import android.graphics.Canvas; 7 | import android.graphics.Color; 8 | import android.graphics.Paint; 9 | import android.graphics.PorterDuff; 10 | import android.util.AttributeSet; 11 | import android.view.View; 12 | import android.view.ViewGroup; 13 | import android.widget.ImageView; 14 | import android.widget.LinearLayout; 15 | 16 | /** 17 | * 自定义ViewGroup（添加爱心） 18 | * Create by: chenwei.li 19 | * Date: 2017/4/25 20 | * time: 11:10 21 | * Email: lichenwei.me@foxmail.com 22 | */ 23 | public class HeartView extends LinearLayout { 24 | 25 | private Bitmap mBitmap; 26 | private Bitmap mOutPutBitmap; 27 | private Paint mPaint; 28 | 29 | public HeartView(Context context) { 30 | super(context); 31 | initView(); 32 | } 33 | 34 | 35 | public HeartView(Context context, AttributeSet attrs) { 36 | super(context, attrs); 37 | initView(); 38 | } 39 | 40 | public HeartView(Context context, AttributeSet attrs, int defStyleAttr) { 41 | super(context, attrs, defStyleAttr); 42 | initView(); 43 | } 44 | 45 | private void initView() { 46 | //源图像 47 | mBitmap= BitmapFactory.decodeResource(getResources(),R.mipmap.heart); 48 | //创建一个目标图像，由于不能对getResources方法提取到的Bitmap对象进行修改操作，必须复制出一个 49 | mOutPutBitmap=Bitmap.createBitmap(mBitmap.getWidth(),mBitmap.getHeight(),Bitmap.Config.ARGB_8888); 50 | //Canvas基于目标图像进行操作 51 | Canvas canvas=new Canvas(mOutPutBitmap); 52 | mPaint=new Paint(Paint.ANTI_ALIAS_FLAG); 53 | //在canvas上的mOutPutBitmap绘制 54 | canvas.drawBitmap(mBitmap,0,0,mPaint); 55 | canvas.drawColor(Color.BLUE, PorterDuff.Mode.SRC_ATOP); 56 | 57 | ImageView imageView1=new ImageView(getContext()); 58 | imageView1.setImageBitmap(mOutPutBitmap); 59 | 60 | 61 | addView(imageView1); 62 | 63 | 64 | } 65 | 66 | @Override 67 | protected void onDraw(Canvas canvas) { 68 | } 69 | } 70 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/view/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.lcw.view; 2 | 3 | import android.content.Intent; 4 | import android.os.Bundle; 5 | import android.support.v7.app.AppCompatActivity; 6 | import android.view.View; 7 | 8 | import com.lcw.view.shoppingcart.ShoppingCartActivity; 9 | import com.lcw.view.starview.StarViewActivity; 10 | 11 | public class MainActivity extends AppCompatActivity { 12 | 13 | 14 | @Override 15 | protected void onCreate(Bundle savedInstanceState) { 16 | super.onCreate(savedInstanceState); 17 | setContentView(R.layout.activity_main); 18 | 19 | findViewById(R.id.bt_main_wave).setOnClickListener(new View.OnClickListener() { 20 | @Override 21 | public void onClick(View v) { 22 | startActivity(new Intent(MainActivity.this, TestActivity.class)); 23 | } 24 | }); 25 | 26 | findViewById(R.id.bt_main_shop).setOnClickListener(new View.OnClickListener() { 27 | @Override 28 | public void onClick(View v) { 29 | startActivity(new Intent(MainActivity.this, ShoppingCartActivity.class)); 30 | } 31 | }); 32 | 33 | findViewById(R.id.bt_main_test).setOnClickListener(new View.OnClickListener() { 34 | @Override 35 | public void onClick(View v) { 36 | startActivity(new Intent(MainActivity.this, StarViewActivity.class)); 37 | } 38 | }); 39 | 40 | 41 | } 42 | 43 | 44 | } 45 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/view/TestActivity.java: -------------------------------------------------------------------------------- 1 | package com.lcw.view; 2 | 3 | import android.content.Intent; 4 | import android.os.Bundle; 5 | import android.support.v7.app.AppCompatActivity; 6 | import android.view.View; 7 | 8 | import com.lcw.view.shoppingcart.ShoppingCartActivity; 9 | import com.lcw.view.starview.StarViewActivity; 10 | 11 | public class TestActivity extends AppCompatActivity { 12 | 13 | 14 | @Override 15 | protected void onCreate(Bundle savedInstanceState) { 16 | super.onCreate(savedInstanceState); 17 | setContentView(R.layout.activity_test); 18 | 19 | } 20 | 21 | 22 | } 23 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/view/shoppingcart/GoodsView.java: -------------------------------------------------------------------------------- 1 | package com.lcw.view.shoppingcart; 2 | 3 | import android.animation.Animator; 4 | import android.animation.AnimatorListenerAdapter; 5 | import android.animation.TypeEvaluator; 6 | import android.animation.ValueAnimator; 7 | import android.content.Context; 8 | import android.graphics.Canvas; 9 | import android.graphics.Color; 10 | import android.graphics.Paint; 11 | import android.graphics.Path; 12 | import android.graphics.Point; 13 | import android.util.AttributeSet; 14 | import android.util.Log; 15 | import android.view.View; 16 | import android.view.ViewGroup; 17 | import android.view.animation.AccelerateDecelerateInterpolator; 18 | 19 | /** 20 | * 商品动画自定义View 21 | * Create by: chenwei.li 22 | * Date: 2017/4/23 23 | * Time: 下午9:21 24 | * Email: lichenwei.me@foxmail.com 25 | */ 26 | 27 | public class GoodsView extends View { 28 | 29 | //小红点开始坐标 30 | Point mCircleStartPoint = new Point(); 31 | //小红点结束坐标 32 | Point mCircleEndPoint = new Point(); 33 | //小红点控制点坐标 34 | Point mCircleConPoint = new Point(); 35 | //小红点的移动坐标 36 | Point mCircleMovePoint = new Point(); 37 | //小红点半径 38 | private int mRadius = 20; 39 | //小红点画笔 40 | private Paint mCirclePaint; 41 | 42 | public GoodsView(Context context) { 43 | super(context); 44 | init(context); 45 | } 46 | 47 | 48 | public GoodsView(Context context, AttributeSet attrs) { 49 | super(context, attrs); 50 | init(context); 51 | } 52 | 53 | public GoodsView(Context context, AttributeSet attrs, int defStyleAttr) { 54 | super(context, attrs, defStyleAttr); 55 | init(context); 56 | } 57 | 58 | @Override 59 | protected void onDraw(Canvas canvas) { 60 | super.onDraw(canvas); 61 | drawCircle(canvas); 62 | } 63 | 64 | /** 65 | * 进行一些初始化操作 66 | */ 67 | private void init(Context context) { 68 | mCirclePaint = new Paint(Paint.ANTI_ALIAS_FLAG); 69 | mCirclePaint.setStyle(Paint.Style.FILL); 70 | mCirclePaint.setColor(Color.RED); 71 | 72 | 73 | } 74 | 75 | /** 76 | * 商品加入购物车的小红点 77 | */ 78 | private void drawCircle(Canvas canvas) { 79 | canvas.drawCircle(mCircleMovePoint.x, mCircleMovePoint.y, mRadius, mCirclePaint); 80 | } 81 | 82 | /** 83 | * 设置开始点和移动点 84 | * 85 | * @param x 86 | * @param y 87 | */ 88 | public void setCircleStartPoint(int x, int y) { 89 | this.mCircleStartPoint.x = x; 90 | this.mCircleStartPoint.y = y; 91 | this.mCircleMovePoint.x = x; 92 | this.mCircleMovePoint.y = y; 93 | } 94 | 95 | /** 96 | * 设置结束点 97 | * 98 | * @param x 99 | * @param y 100 | */ 101 | public void setCircleEndPoint(int x, int y) { 102 | this.mCircleEndPoint.x = x; 103 | this.mCircleEndPoint.y = y; 104 | } 105 | 106 | 107 | /** 108 | * 开始动画 109 | */ 110 | public void startAnimation() { 111 | if (mCircleStartPoint == null || mCircleEndPoint == null) { 112 | return; 113 | } 114 | 115 | 116 | //设置控制点 117 | mCircleConPoint.x = ((mCircleStartPoint.x + mCircleEndPoint.x) / 2); 118 | mCircleConPoint.y = (20); 119 | 120 | //设置值动画 121 | ValueAnimator valueAnimator = ValueAnimator.ofObject(new CirclePointEvaluator(), mCircleStartPoint, mCircleEndPoint); 122 | valueAnimator.setDuration(600); 123 | valueAnimator.setInterpolator(new AccelerateDecelerateInterpolator()); 124 | valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 125 | @Override 126 | public void onAnimationUpdate(ValueAnimator animation) { 127 | Point goodsViewPoint = (Point) animation.getAnimatedValue(); 128 | mCircleMovePoint.x = goodsViewPoint.x; 129 | mCircleMovePoint.y = goodsViewPoint.y; 130 | invalidate(); 131 | } 132 | }); 133 | valueAnimator.addListener(new AnimatorListenerAdapter() { 134 | @Override 135 | public void onAnimationEnd(Animator animation) { 136 | super.onAnimationEnd(animation); 137 | ViewGroup viewGroup = (ViewGroup) getParent(); 138 | viewGroup.removeView(GoodsView.this); 139 | } 140 | }); 141 | valueAnimator.start(); 142 | 143 | } 144 | 145 | 146 | /** 147 | * 自定义Evaluator 148 | */ 149 | public class CirclePointEvaluator implements TypeEvaluator { 150 | 151 | /** 152 | * @param t 当前动画进度 153 | * @param startValue 开始值 154 | * @param endValue 结束值 155 | * @return 156 | */ 157 | @Override 158 | public Object evaluate(float t, Object startValue, Object endValue) { 159 | 160 | Point startPoint = (Point) startValue; 161 | Point endPoint = (Point) endValue; 162 | 163 | int x = (int) (Math.pow((1-t),2)*startPoint.x+2*(1-t)*t*mCircleConPoint.x+Math.pow(t,2)*endPoint.x); 164 | int y = (int) (Math.pow((1-t),2)*startPoint.y+2*(1-t)*t*mCircleConPoint.y+Math.pow(t,2)*endPoint.y); 165 | 166 | return new Point(x,y); 167 | } 168 | 169 | } 170 | 171 | } 172 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/view/shoppingcart/ShoppingCartActivity.java: -------------------------------------------------------------------------------- 1 | package com.lcw.view.shoppingcart; 2 | 3 | import android.os.Bundle; 4 | import android.support.v7.app.AppCompatActivity; 5 | import android.view.View; 6 | import android.view.ViewGroup; 7 | import android.view.ViewTreeObserver; 8 | import android.widget.ImageView; 9 | 10 | import com.lcw.view.R; 11 | 12 | public class ShoppingCartActivity extends AppCompatActivity { 13 | 14 | private ImageView iv_shop_add; 15 | private ImageView iv_shop_cart; 16 | private ViewGroup mViewGroup; 17 | 18 | private int mShoppingCartWidth; 19 | 20 | @Override 21 | protected void onCreate(Bundle savedInstanceState) { 22 | super.onCreate(savedInstanceState); 23 | setContentView(R.layout.activity_shoppingcart); 24 | initView(); 25 | getData(); 26 | 27 | ViewTreeObserver viewTreeObserver = iv_shop_cart.getViewTreeObserver(); 28 | viewTreeObserver.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { 29 | @Override 30 | public void onGlobalLayout() { 31 | iv_shop_cart.getViewTreeObserver().removeOnGlobalLayoutListener(this); 32 | mShoppingCartWidth = iv_shop_cart.getMeasuredWidth(); 33 | } 34 | }); 35 | 36 | } 37 | 38 | private void getData() { 39 | iv_shop_add.setOnClickListener(new View.OnClickListener() { 40 | @Override 41 | public void onClick(View v) { 42 | 43 | //获取商品坐标 44 | int[] goodsPoint = new int[2]; 45 | iv_shop_add.getLocationInWindow(goodsPoint); 46 | 47 | //获取购物车坐标 48 | int[] shoppingCartPoint = new int[2]; 49 | iv_shop_cart.getLocationInWindow(shoppingCartPoint); 50 | 51 | 52 | //生成商品View 53 | GoodsView goodsView = new GoodsView(ShoppingCartActivity.this); 54 | goodsView.setCircleStartPoint(goodsPoint[0], goodsPoint[1]); 55 | goodsView.setCircleEndPoint(shoppingCartPoint[0] + mShoppingCartWidth / 2, shoppingCartPoint[1]); 56 | //添加View并执行动画 57 | mViewGroup.addView(goodsView); 58 | goodsView.startAnimation(); 59 | 60 | } 61 | }); 62 | 63 | } 64 | 65 | private void initView() { 66 | iv_shop_add = (ImageView) findViewById(R.id.iv_shop_add); 67 | iv_shop_cart = (ImageView) findViewById(R.id.iv_shop_cart); 68 | mViewGroup = (ViewGroup) getWindow().getDecorView(); 69 | 70 | } 71 | 72 | 73 | } 74 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/view/starview/StarViewActivity.java: -------------------------------------------------------------------------------- 1 | package com.lcw.view.starview; 2 | 3 | import android.os.Bundle; 4 | import android.support.v7.app.AppCompatActivity; 5 | 6 | import com.lcw.view.R; 7 | 8 | /** 9 | * 仿直播点赞满屏飞心 10 | * Create by: chenwei.li 11 | * Date: 2017/4/21 12 | * Time: 下午11:47 13 | * Email: lichenwei.me@foxmail.com 14 | */ 15 | public class StarViewActivity extends AppCompatActivity { 16 | 17 | @Override 18 | protected void onCreate(Bundle savedInstanceState) { 19 | super.onCreate(savedInstanceState); 20 | setContentView(R.layout.activity_starview); 21 | 22 | } 23 | 24 | 25 | } 26 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/view/starview/StarViewGroup.java: -------------------------------------------------------------------------------- 1 | package com.lcw.view.starview; 2 | 3 | import android.animation.Animator; 4 | import android.animation.AnimatorListenerAdapter; 5 | import android.animation.AnimatorSet; 6 | import android.animation.ObjectAnimator; 7 | import android.animation.TypeEvaluator; 8 | import android.animation.ValueAnimator; 9 | import android.content.Context; 10 | import android.graphics.Bitmap; 11 | import android.graphics.BitmapFactory; 12 | import android.graphics.Canvas; 13 | import android.graphics.Color; 14 | import android.graphics.Paint; 15 | import android.graphics.Path; 16 | import android.graphics.Point; 17 | import android.graphics.PorterDuff; 18 | import android.util.AttributeSet; 19 | import android.util.Log; 20 | import android.view.MotionEvent; 21 | import android.view.View; 22 | import android.view.animation.AccelerateDecelerateInterpolator; 23 | import android.widget.ImageView; 24 | import android.widget.RelativeLayout; 25 | 26 | import com.lcw.view.R; 27 | 28 | import java.util.Random; 29 | 30 | /** 31 | * 自定义ViewGroup（内含自定义View-星星） 32 | * Create by: chenwei.li 33 | * Date: 2017/4/25 34 | * time: 15:41 35 | * Email: lichenwei.me@foxmail.com 36 | */ 37 | public class StarViewGroup extends RelativeLayout implements View.OnClickListener { 38 | 39 | private Bitmap mBitmap; 40 | 41 | //画笔，路径 42 | private Paint mPaint; 43 | private Path mPath; 44 | 45 | //记录屏幕的宽，高 46 | private int mScreenWidth; 47 | private int mScreenHeight; 48 | 49 | //记录数据点，控制点(由于是三阶贝塞尔曲线，所以有2个控制点) 50 | protected Point mStartPoint; 51 | protected Point mEndPoint; 52 | protected Point mConOnePoint; 53 | protected Point mConTwoPoint; 54 | 55 | protected Random mRandom; 56 | protected int[] mColors = {Color.BLUE, Color.CYAN, Color.GREEN, Color.RED, Color.MAGENTA, Color.YELLOW}; 57 | 58 | 59 | public StarViewGroup(Context context) { 60 | super(context); 61 | initView(); 62 | } 63 | 64 | public StarViewGroup(Context context, AttributeSet attrs) { 65 | super(context, attrs); 66 | initView(); 67 | } 68 | 69 | public StarViewGroup(Context context, AttributeSet attrs, int defStyleAttr) { 70 | super(context, attrs, defStyleAttr); 71 | initView(); 72 | } 73 | 74 | /** 75 | * 进行一些初始化的操作 76 | */ 77 | private void initView() { 78 | //初始化画笔，路径 79 | mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 80 | mPaint.setStrokeWidth(8); 81 | mPaint.setStyle(Paint.Style.STROKE); 82 | mPaint.setColor(Color.BLACK); 83 | mPath = new Path(); 84 | mRandom = new Random(); 85 | //获取资源图片转化Bitmap（不可修改） 86 | mBitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.icon_star); 87 | 88 | setOnClickListener(this); 89 | } 90 | 91 | /** 92 | * 画星星并随机赋予不同的颜色 93 | * 94 | * @param color 95 | * @return 96 | */ 97 | private Bitmap drawStar(int color) { 98 | //创建和资源文件Bitmap相同尺寸的Bitmap填充Canvas 99 | Bitmap outBitmap = Bitmap.createBitmap(mBitmap.getWidth(), mBitmap.getHeight(), Bitmap.Config.ARGB_8888); 100 | Canvas canvas = new Canvas(outBitmap); 101 | canvas.drawBitmap(mBitmap, 0, 0, mPaint); 102 | //利用Graphics中的XferModes对Canvas进行着色 103 | canvas.drawColor(color, PorterDuff.Mode.SRC_IN); 104 | canvas.setBitmap(null); 105 | return outBitmap; 106 | } 107 | 108 | protected void addStar() { 109 | Bitmap starBitmap = drawStar(mColors[mRandom.nextInt(mColors.length)]); 110 | final ImageView imageView = new ImageView(getContext()); 111 | RelativeLayout.LayoutParams layoutParams = new LayoutParams(120, 100); 112 | layoutParams.addRule(CENTER_HORIZONTAL); 113 | layoutParams.addRule(ALIGN_PARENT_BOTTOM); 114 | imageView.setImageBitmap(starBitmap); 115 | addView(imageView, layoutParams); 116 | 117 | 118 | Point conOnePoint = this.mConOnePoint; 119 | Point conTwoPoint = this.mConTwoPoint; 120 | Point startPoint = this.mStartPoint; 121 | Point endPoint = this.mEndPoint; 122 | 123 | 124 | //设置属性动画 125 | ValueAnimator valueAnimator = ValueAnimator.ofObject(new StarTypeEvaluator(conOnePoint, conTwoPoint), startPoint, 126 | endPoint); 127 | valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 128 | @Override 129 | public void onAnimationUpdate(ValueAnimator animation) { 130 | Point point = (Point) animation.getAnimatedValue(); 131 | imageView.setX(point.x); 132 | imageView.setY(point.y); 133 | } 134 | }); 135 | 136 | valueAnimator.addListener(new AnimatorListenerAdapter() { 137 | @Override 138 | public void onAnimationEnd(Animator animation) { 139 | super.onAnimationEnd(animation); 140 | StarViewGroup.this.removeView(imageView); 141 | } 142 | }); 143 | 144 | 145 | //透明度动画 146 | ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(imageView, "alpha", 1.0f, 0f); 147 | 148 | //组合动画 149 | AnimatorSet animatorSet = new AnimatorSet(); 150 | animatorSet.setDuration(4000); 151 | animatorSet.play(valueAnimator).with(objectAnimator); 152 | animatorSet.start(); 153 | 154 | 155 | valueAnimator.start(); 156 | } 157 | 158 | /** 159 | * 获取屏幕的宽高并设置对应的数据点和控制点 160 | * 161 | * @param w 162 | * @param h 163 | * @param oldw 164 | * @param oldh 165 | */ 166 | @Override 167 | protected void onSizeChanged(int w, int h, int oldw, int oldh) { 168 | super.onSizeChanged(w, h, oldw, oldh); 169 | this.mScreenWidth = w; 170 | this.mScreenHeight = h; 171 | mStartPoint = new Point(mScreenWidth / 2, mScreenHeight); 172 | mEndPoint = new Point(mScreenWidth / 2, 0); 173 | mConOnePoint = new Point(mScreenWidth, mScreenHeight * 3 / 4); 174 | mConTwoPoint = new Point(0, mScreenHeight / 4); 175 | //为了调用onDraw方法 176 | setBackgroundColor(Color.WHITE); 177 | 178 | } 179 | 180 | @Override 181 | protected void onDraw(Canvas canvas) { 182 | super.onDraw(canvas); 183 | // mPath.moveTo(mStartPoint.x, mStartPoint.y); 184 | // mPath.cubicTo(mConOnePoint.x, mConOnePoint.y, mConTwoPoint.x, mConTwoPoint.y, mEndPoint.x, mEndPoint.y); 185 | // canvas.drawPath(mPath, mPaint); 186 | } 187 | 188 | 189 | class StarTypeEvaluator implements TypeEvaluator { 190 | 191 | //记录控制点 192 | private Point conOnePoint, conSecondPoint; 193 | 194 | public StarTypeEvaluator(Point conOnePoint, Point conSecondPoint) { 195 | this.conOnePoint = conOnePoint; 196 | this.conSecondPoint = conSecondPoint; 197 | } 198 | 199 | @Override 200 | public Point evaluate(float t, Point startValue, Point endValue) { 201 | 202 | //利用三阶贝塞尔曲线公式算出中间点坐标 203 | int x = (int) (startValue.x * Math.pow((1 - t), 3) + 3 * conOnePoint.x * t * Math.pow((1 - t), 2) + 3 * 204 | conSecondPoint.x * Math.pow(t, 2) * (1 - t) + endValue.x * Math.pow(t, 3)); 205 | int y = (int) (startValue.y * Math.pow((1 - t), 3) + 3 * conOnePoint.y * t * Math.pow((1 - t), 2) + 3 * 206 | conSecondPoint.y * Math.pow(t, 2) * (1 - t) + endValue.y * Math.pow(t, 3)); 207 | return new Point(x, y); 208 | } 209 | } 210 | 211 | @Override 212 | public void onClick(View v) { 213 | 214 | // mStartPoint = new Point(mScreenWidth / 2, mScreenHeight); 215 | // mEndPoint = new Point((int) (mScreenWidth / 2 + 150 * mRandom.nextFloat()), 0); 216 | // mConOnePoint = new Point((int) (mScreenWidth * mRandom.nextFloat()), (int) (mScreenHeight * 3 * mRandom.nextFloat() / 4)); 217 | // mConTwoPoint = new Point(0, (int) (mScreenHeight * mRandom.nextFloat() / 4)); 218 | // 219 | // addStar(); 220 | } 221 | 222 | /** 223 | * 监听onTouch事件，动态生成对应坐标 224 | * @param event 225 | * @return 226 | */ 227 | @Override 228 | public boolean onTouchEvent(MotionEvent event) { 229 | mStartPoint = new Point(mScreenWidth / 2, mScreenHeight); 230 | mEndPoint = new Point((int) (mScreenWidth / 2 + 150 * mRandom.nextFloat()), 0); 231 | mConOnePoint = new Point((int) (mScreenWidth * mRandom.nextFloat()), (int) (mScreenHeight * 3 * mRandom.nextFloat() / 4)); 232 | mConTwoPoint = new Point(0, (int) (mScreenHeight * mRandom.nextFloat() / 4)); 233 | 234 | addStar(); 235 | return true; 236 | } 237 | } 238 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 |