├── .gitignore
├── .idea
├── caches
│ └── build_file_checksums.ser
├── codeStyles
│ └── Project.xml
├── encodings.xml
├── gradle.xml
├── misc.xml
├── runConfigurations.xml
└── vcs.xml
├── LICENSE
├── README.md
├── app
├── .gitignore
├── build.gradle
├── proguard-rules.pro
└── src
│ ├── androidTest
│ └── java
│ │ └── cn
│ │ └── qqtheme
│ │ └── roundrainbowtextview
│ │ └── ExampleInstrumentedTest.java
│ ├── main
│ ├── AndroidManifest.xml
│ ├── java
│ │ └── cn
│ │ │ └── qqtheme
│ │ │ └── roundrainbowtextview
│ │ │ ├── MainActivity.java
│ │ │ └── RoundRainbowTextView.java
│ └── res
│ │ ├── drawable-v24
│ │ └── ic_launcher_foreground.xml
│ │ ├── drawable
│ │ └── ic_launcher_background.xml
│ │ ├── layout
│ │ └── activity_main.xml
│ │ ├── mipmap-anydpi-v26
│ │ ├── ic_launcher.xml
│ │ └── ic_launcher_round.xml
│ │ ├── mipmap-hdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-mdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xxhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xxxhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ └── values
│ │ ├── colors.xml
│ │ ├── strings.xml
│ │ └── styles.xml
│ └── test
│ └── java
│ └── cn
│ └── qqtheme
│ └── roundrainbowtextview
│ └── ExampleUnitTest.java
├── build.gradle
├── gradle.properties
├── gradle
└── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
├── screenshot.jpg
└── settings.gradle
/.gitignore:
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1 | *.iml
2 | .gradle
3 | /local.properties
4 | /.idea
5 | .DS_Store
6 | /build
7 | /captures
8 | .externalNativeBuild
9 |
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/.idea/caches/build_file_checksums.ser:
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/.idea/vcs.xml:
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/LICENSE:
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1 | MIT License
2 |
3 | Copyright (c) 2018 穿青山魈人马
4 |
5 | Permission is hereby granted, free of charge, to any person obtaining a copy
6 | of this software and associated documentation files (the "Software"), to deal
7 | in the Software without restriction, including without limitation the rights
8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 |
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 |
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 |
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/README.md:
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1 | # RoundRainbowTextView
2 | Android自定义TextView，带渐变色边框的彩虹字效果
3 |
4 | ```java
5 | RoundRainbowTextView textView = findViewById(R.id.custom);
6 | textView.setBorder(2, 5, new int[]{Color.RED, Color.YELLOW});
7 | ```
8 | 
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/app/.gitignore:
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1 | /build
2 | *.iml
3 |
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/app/build.gradle:
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1 | apply plugin: 'com.android.application'
2 |
3 | android {
4 | compileSdkVersion 28
5 | defaultConfig {
6 | applicationId "cn.qqtheme.roundrainbowtextview"
7 | minSdkVersion 15
8 | targetSdkVersion 28
9 | versionCode 1
10 | versionName "1.0"
11 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
12 | }
13 | buildTypes {
14 | release {
15 | minifyEnabled false
16 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
17 | }
18 | }
19 | }
20 |
21 | dependencies {
22 | implementation fileTree(dir: 'libs', include: ['*.jar'])
23 | implementation 'com.android.support:appcompat-v7:28.+'
24 | implementation 'com.android.support.constraint:constraint-layout:1.0.2'
25 | testImplementation 'junit:junit:4.12'
26 | androidTestImplementation 'com.android.support.test:runner:1.0.1'
27 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
28 | }
29 |
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/app/proguard-rules.pro:
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1 | # Add project specific ProGuard rules here.
2 | # You can control the set of applied configuration files using the
3 | # proguardFiles setting in build.gradle.
4 | #
5 | # For more details, see
6 | # http://developer.android.com/guide/developing/tools/proguard.html
7 |
8 | # If your project uses WebView with JS, uncomment the following
9 | # and specify the fully qualified class name to the JavaScript interface
10 | # class:
11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
12 | # public *;
13 | #}
14 |
15 | # Uncomment this to preserve the line number information for
16 | # debugging stack traces.
17 | #-keepattributes SourceFile,LineNumberTable
18 |
19 | # If you keep the line number information, uncomment this to
20 | # hide the original source file name.
21 | #-renamesourcefileattribute SourceFile
22 |
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/app/src/androidTest/java/cn/qqtheme/roundrainbowtextview/ExampleInstrumentedTest.java:
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1 | package cn.qqtheme.roundrainbowtextview;
2 |
3 | import android.content.Context;
4 | import android.support.test.InstrumentationRegistry;
5 | import android.support.test.runner.AndroidJUnit4;
6 |
7 | import org.junit.Test;
8 | import org.junit.runner.RunWith;
9 |
10 | import static org.junit.Assert.*;
11 |
12 | /**
13 | * Instrumented test, which will execute on an Android device.
14 | *
15 | * @see Testing documentation
16 | */
17 | @RunWith(AndroidJUnit4.class)
18 | public class ExampleInstrumentedTest {
19 | @Test
20 | public void useAppContext() {
21 | // Context of the app under test.
22 | Context appContext = InstrumentationRegistry.getTargetContext();
23 |
24 | assertEquals("cn.qqtheme.roundrainbowtextview", appContext.getPackageName());
25 | }
26 | }
27 |
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/app/src/main/AndroidManifest.xml:
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/app/src/main/java/cn/qqtheme/roundrainbowtextview/MainActivity.java:
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1 | package cn.qqtheme.roundrainbowtextview;
2 |
3 | import android.graphics.Color;
4 | import android.support.v7.app.AppCompatActivity;
5 | import android.os.Bundle;
6 |
7 | public class MainActivity extends AppCompatActivity {
8 |
9 | @Override
10 | protected void onCreate(Bundle savedInstanceState) {
11 | super.onCreate(savedInstanceState);
12 | setContentView(R.layout.activity_main);
13 | RoundRainbowTextView textView1 = findViewById(R.id.custom1);
14 | textView1.setBorder(2, 5, new int[]{0xFF00FF00, 0xFFFFFF00, 0xFF00FFFF});
15 | RoundRainbowTextView textView2 = findViewById(R.id.custom2);
16 | textView2.setBorder(0.5f, 3f, new int[]{Color.YELLOW, Color.RED});
17 | RoundRainbowTextView textView3 = findViewById(R.id.custom3);
18 | textView3.setBorder(6, 10, new int[]{Color.CYAN, Color.DKGRAY, Color.GRAY,
19 | Color.LTGRAY, Color.MAGENTA, Color.GREEN, Color.TRANSPARENT, Color.BLUE});
20 | }
21 | }
22 |
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/app/src/main/java/cn/qqtheme/roundrainbowtextview/RoundRainbowTextView.java:
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1 | package cn.qqtheme.roundrainbowtextview;
2 |
3 | import android.content.Context;
4 | import android.graphics.Canvas;
5 | import android.graphics.LinearGradient;
6 | import android.graphics.Paint;
7 | import android.graphics.Rect;
8 | import android.graphics.RectF;
9 | import android.graphics.Shader;
10 | import android.support.annotation.Nullable;
11 | import android.text.TextPaint;
12 | import android.util.AttributeSet;
13 |
14 | /**
15 | * 带渐变边框的彩虹字，参阅 https://blog.csdn.net/gxp1182893781/article/details/78179248 及 http://blog.csdn.net/jack__frost/article/details/52279374
16 | *
17 | * Created by liyujiang on 2018/7/9 18:24.
18 | */
19 | public class RoundRainbowTextView extends android.support.v7.widget.AppCompatTextView {
20 | private static final int[] GRADIENT_COLORS = {0xFFE64433, 0xFFFDB628};
21 | private static final float BORDER_WIDTH = 1f;//dp
22 | private static final float BORDER_RADIUS = 3f;//dp
23 | private boolean drawBorder = true;
24 | private int[] borderColors = GRADIENT_COLORS;
25 | private float borderWidth = BORDER_WIDTH;
26 | private float borderRadius = BORDER_RADIUS;
27 | private int textWidth;
28 | private LinearGradient shader;
29 | private Rect rect;
30 | private RectF rectF;
31 |
32 | public RoundRainbowTextView(Context context) {
33 | super(context);
34 | }
35 |
36 | public RoundRainbowTextView(Context context, @Nullable AttributeSet attrs) {
37 | super(context, attrs);
38 | }
39 |
40 | public RoundRainbowTextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
41 | super(context, attrs, defStyleAttr);
42 | }
43 |
44 | public void setBorder(float width, float radius) {
45 | setBorder(width, radius, GRADIENT_COLORS);
46 | }
47 |
48 | public void setBorder(float width, float radius, int[] colors) {
49 | this.drawBorder = width > 0;
50 | this.borderWidth = width;
51 | this.borderRadius = radius;
52 | this.borderColors = colors;
53 | invalidate();
54 | }
55 |
56 | @Override
57 | protected void onSizeChanged(int w, int h, int oldw, int oldh) {
58 | super.onSizeChanged(w, h, oldw, oldh);
59 | if (textWidth == 0) {
60 | textWidth = getMeasuredWidth();
61 | }
62 | if (shader == null) {
63 | shader = new LinearGradient(0, 0, textWidth, 0,
64 | borderColors, null, Shader.TileMode.CLAMP);
65 | }
66 | if (textWidth > 0) {
67 | //得到父类中写字的那支笔，并套上线性渲染器
68 | TextPaint paint = getPaint();
69 | //设置渐变背景
70 | paint.setShader(shader);
71 | }
72 | }
73 |
74 | @Override
75 | protected void onDraw(Canvas canvas) {
76 | super.onDraw(canvas);
77 | //绘制渐变圆角边框
78 | if (textWidth > 0 && drawBorder) {
79 | canvas.save();
80 | TextPaint paint = getPaint();
81 | paint.setStyle(Paint.Style.STROKE);
82 | paint.setStrokeWidth(dip2Px(borderWidth));
83 | if (rect == null) {
84 | rect = new Rect();
85 | }
86 | canvas.getClipBounds(rect);
87 | if (rectF == null) {
88 | rectF = new RectF(rect);
89 | }
90 | float radius = dip2Px(borderRadius);
91 | canvas.drawRoundRect(rectF, radius, radius, paint);
92 | canvas.restore();
93 | }
94 | }
95 |
96 | private float dip2Px(float dip) {
97 | float density = getResources().getDisplayMetrics().density;
98 | return dip * density + .5f;
99 | }
100 |
101 | }
102 |
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/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
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