├── .gitignore ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── githubzjutkz │ │ └── com │ │ └── app │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── github │ │ │ └── zjutkz │ │ │ └── MainActivity.java │ └── res │ │ ├── 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_foreground.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-mdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xhdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxhdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxxhdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ └── values │ │ ├── colors.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── githubzjutkz │ └── com │ └── app │ └── ExampleUnitTest.java ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── lib ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── githubzjutkz │ │ └── com │ │ └── lib │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── github │ │ │ └── zjutkz │ │ │ ├── IDCreator.java │ │ │ ├── exception │ │ │ └── TimeBackwardException.java │ │ │ └── snowflake │ │ │ └── SnowFlake.java │ └── res │ │ └── values │ │ └── strings.xml │ └── test │ └── java │ └── githubzjutkz │ └── com │ └── lib │ └── ExampleUnitTest.java └── settings.gradle /.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 | .idea/tasks.xml 39 | .idea/gradle.xml 40 | .idea/dictionaries 41 | .idea/libraries 42 | 43 | # Keystore files 44 | *.jks 45 | 46 | # External native build folder generated in Android Studio 2.2 and later 47 | .externalNativeBuild 48 | 49 | # Google Services (e.g. APIs or Firebase) 50 | google-services.json 51 | 52 | # Freeline 53 | freeline.py 54 | freeline/ 55 | freeline_project_description.json 56 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ASnowflake 2 | A library which uses to generate Global Unique Ids based on snowflake,An alternative of UUID. 3 | 4 | ### Usage 5 | 6 | ```groovy 7 | allprojects { 8 | repositories { 9 | ... 10 | maven { url 'https://jitpack.io' } 11 | } 12 | } 13 | ``` 14 | 15 | ```groovy 16 | dependencies { 17 | compile 'com.github.zjutkz:ASnowflake:1.0.0' 18 | } 19 | ``` 20 | 21 | ```java 22 | SnowFlake.getInstance().nextId() 23 | ``` 24 | 25 | 26 | 27 | ###License 28 | 29 | ``` 30 | Licensed under the Apache License, Version 2.0 (the "License"); 31 | you may not use this file except in compliance with the License. 32 | You may obtain a copy of the License at 33 | 34 | http://www.apache.org/licenses/LICENSE-2.0 35 | 36 | Unless required by applicable law or agreed to in writing, software 37 | distributed under the License is distributed on an "AS IS" BASIS, 38 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 39 | See the License for the specific language governing permissions and 40 | limitations under the License. 41 | ``` -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 26 5 | buildToolsVersion "26.0.1" 6 | 7 | 8 | defaultConfig { 9 | applicationId "githubzjutkz.com.app" 10 | minSdkVersion 14 11 | targetSdkVersion 26 12 | versionCode 1 13 | versionName "1.0" 14 | 15 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 16 | 17 | } 18 | buildTypes { 19 | release { 20 | minifyEnabled false 21 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 22 | } 23 | } 24 | } 25 | 26 | dependencies { 27 | compile fileTree(include: ['*.jar'], dir: 'libs') 28 | compile "com.android.support:appcompat-v7:${SUPPORT_V7_VERSION}" 29 | compile "com.android.support:recyclerview-v7:${SUPPORT_V7_VERSION}" 30 | compile "com.android.support:cardview-v7:${SUPPORT_V7_VERSION}" 31 | compile "com.android.support:design:${SUPPORT_V7_VERSION}" 32 | compile project(':lib') 33 | } 34 | -------------------------------------------------------------------------------- /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/kangzhe/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 | 19 | # Uncomment this to preserve the line number information for 20 | # debugging stack traces. 21 | #-keepattributes SourceFile,LineNumberTable 22 | 23 | # If you keep the line number information, uncomment this to 24 | # hide the original source file name. 25 | #-renamesourcefileattribute SourceFile 26 | -------------------------------------------------------------------------------- /app/src/androidTest/java/githubzjutkz/com/app/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package githubzjutkz.com.app; 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() throws Exception { 21 | // Context of the app under test. 22 | Context appContext = InstrumentationRegistry.getTargetContext(); 23 | 24 | assertEquals("githubzjutkz.com.app", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | -------------------------------------------------------------------------------- /app/src/main/java/com/github/zjutkz/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.github.zjutkz; 2 | 3 | import android.os.Bundle; 4 | import android.support.annotation.Nullable; 5 | import android.support.v7.app.AppCompatActivity; 6 | import android.util.Log; 7 | import android.view.View; 8 | 9 | import com.github.zjutkz.snowflake.SnowFlake; 10 | 11 | import java.util.HashSet; 12 | import java.util.Set; 13 | 14 | import githubzjutkz.com.app.R; 15 | 16 | /** 17 | * Created by kangzhe on 17/9/12. 18 | */ 19 | 20 | public class MainActivity extends AppCompatActivity{ 21 | 22 | private static final String TAG = "MainActivity"; 23 | 24 | private Set ids = new HashSet<>(); 25 | @Override 26 | protected void onCreate(@Nullable Bundle savedInstanceState) { 27 | super.onCreate(savedInstanceState); 28 | setContentView(R.layout.activity_main); 29 | } 30 | 31 | public void generate(View view){ 32 | for(int i = 0;i < 5000;i++){ 33 | ids.add(SnowFlake.getInstance().nextId()); 34 | } 35 | 36 | if(ids.size() < 5000){ 37 | Log.e(TAG, "generate failed: %s" + ids.size()); 38 | }else { 39 | Log.d(TAG, "generate success"); 40 | } 41 | } 42 | } 43 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 11 | 13 | 15 | 17 | 19 | 21 | 23 | 25 | 27 | 29 | 31 | 33 | 35 | 37 | 39 | 41 | 43 | 45 | 47 | 49 | 51 | 52 | 53 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 |