├── app ├── .gitignore ├── src │ ├── main │ │ ├── res │ │ │ ├── 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 │ │ │ │ ├── dimens.xml │ │ │ │ ├── styles.xml │ │ │ │ └── strings.xml │ │ │ ├── values-w820dp │ │ │ │ └── dimens.xml │ │ │ └── layout │ │ │ │ └── activity_main.xml │ │ ├── java │ │ │ └── com │ │ │ │ └── franktan │ │ │ │ └── multithreadingblogs │ │ │ │ ├── UiThreadCallback.java │ │ │ │ ├── Util.java │ │ │ │ ├── CustomRunnable.java │ │ │ │ ├── CustomCallable.java │ │ │ │ ├── CustomHandlerThread.java │ │ │ │ ├── CustomThreadPoolManager.java │ │ │ │ └── MainActivity.java │ │ └── AndroidManifest.xml │ ├── test │ │ └── java │ │ │ └── com │ │ │ └── franktan │ │ │ └── multithreadingblogs │ │ │ └── ExampleUnitTest.java │ └── androidTest │ │ └── java │ │ └── com │ │ └── franktan │ │ └── multithreadingblogs │ │ └── ApplicationTest.java ├── proguard-rules.pro └── build.gradle ├── settings.gradle ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── .gitignore ├── README.md ├── gradle.properties ├── gradlew.bat └── gradlew /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/frank-tan/AndroidMultithreadingBlogs/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/workspace.xml 5 | /.idea/libraries 6 | .DS_Store 7 | /build 8 | /captures 9 | .idea/** -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/frank-tan/AndroidMultithreadingBlogs/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/frank-tan/AndroidMultithreadingBlogs/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/frank-tan/AndroidMultithreadingBlogs/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/frank-tan/AndroidMultithreadingBlogs/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/frank-tan/AndroidMultithreadingBlogs/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #3F51B5 4 | #303F9F 5 | #FF4081 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 16dp 4 | 16dp 5 | 6 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Sun Apr 10 20:46:19 AWST 2016 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-2.10-all.zip 7 | -------------------------------------------------------------------------------- /app/src/main/res/values-w820dp/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 64dp 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/java/com/franktan/multithreadingblogs/UiThreadCallback.java: -------------------------------------------------------------------------------- 1 | package com.franktan.multithreadingblogs; 2 | 3 | import android.os.Message; 4 | 5 | /** 6 | * Created by Frank Tan on 3/04/2016. 7 | * 8 | * An interface for worker threads to send messages to the UI thread. 9 | * MainActivity implemented this Interface in this app. 10 | */ 11 | public interface UiThreadCallback { 12 | void publishToUiThread(Message message); 13 | } 14 | -------------------------------------------------------------------------------- /app/src/test/java/com/franktan/multithreadingblogs/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package com.franktan.multithreadingblogs; 2 | 3 | import org.junit.Test; 4 | 5 | import static org.junit.Assert.*; 6 | 7 | /** 8 | * To work on unit tests, switch the Test Artifact in the Build Variants view. 9 | */ 10 | public class ExampleUnitTest { 11 | @Test 12 | public void addition_isCorrect() throws Exception { 13 | assertEquals(4, 2 + 2); 14 | } 15 | } -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/franktan/multithreadingblogs/ApplicationTest.java: -------------------------------------------------------------------------------- 1 | package com.franktan.multithreadingblogs; 2 | 3 | import android.app.Application; 4 | import android.test.ApplicationTestCase; 5 | 6 | /** 7 | * Testing Fundamentals 8 | */ 9 | public class ApplicationTest extends ApplicationTestCase { 10 | public ApplicationTest() { 11 | super(Application.class); 12 | } 13 | } -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Source Code for Android Multithreading Blogs 2 | 3 | This is an example app for demonstrating various of multi-threading techniques. The detailed discussions of these techniques are available on my [technical blog](https://medium.com/@frank.tan). 4 | 5 | The blogs in this series are still expanding. Available blogs are: 6 | 7 | * [HandlerThread](https://medium.com/@frank.tan/using-handlerthread-in-android-46c285936fdd#.cbg6w03kc) 8 | 9 | * [Thread Pool](https://medium.com/@frank.tan/using-a-thread-pool-in-android-e3c88f59d07f#.wz5n8aao6) 10 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | Multithreading Series 3 | Send a Runnable to a HandlerThread 4 | Send a Message to a HandlerThread 5 | Send 4 tasks to Thread Pool 6 | Send 8 tasks to Thread Pool 7 | Clear Messages 8 | Stop all threads in thread pool 9 | 10 | -------------------------------------------------------------------------------- /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/tan/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/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 23 5 | buildToolsVersion "23.0.2" 6 | 7 | defaultConfig { 8 | applicationId "com.franktan.multithreadingblogs" 9 | minSdkVersion 16 10 | targetSdkVersion 23 11 | versionCode 1 12 | versionName "1.0" 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 | testCompile 'junit:junit:4.12' 25 | compile 'com.android.support:appcompat-v7:23.2.1' 26 | } 27 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /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 | # Default value: -Xmx10248m -XX:MaxPermSize=256m 13 | # org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8 14 | 15 | # When configured, Gradle will run in incubating parallel mode. 16 | # This option should only be used with decoupled projects. More details, visit 17 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 18 | # org.gradle.parallel=true -------------------------------------------------------------------------------- /app/src/main/java/com/franktan/multithreadingblogs/Util.java: -------------------------------------------------------------------------------- 1 | package com.franktan.multithreadingblogs; 2 | 3 | import android.os.Bundle; 4 | import android.os.Message; 5 | 6 | import java.text.SimpleDateFormat; 7 | import java.util.Date; 8 | 9 | /** 10 | * Created by Frank Tan on 10/04/2016. 11 | * 12 | * A helper class with static properties and methods 13 | */ 14 | public class Util { 15 | public static final String LOG_TAG = "BackgroundThread"; 16 | public static final int MESSAGE_ID = 1; 17 | public static final String MESSAGE_BODY = "MESSAGE_BODY"; 18 | public static final String EMPTY_MESSAGE = ""; 19 | 20 | public static String getReadableTime() { 21 | SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.SSS"); 22 | return sdf.format(new Date()); 23 | } 24 | 25 | public static Message createMessage(int id, String dataString) { 26 | Bundle bundle = new Bundle(); 27 | bundle.putString(Util.MESSAGE_BODY, dataString); 28 | Message message = new Message(); 29 | message.what = id; 30 | message.setData(bundle); 31 | 32 | return message; 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /app/src/main/java/com/franktan/multithreadingblogs/CustomRunnable.java: -------------------------------------------------------------------------------- 1 | package com.franktan.multithreadingblogs; 2 | 3 | import android.os.Message; 4 | 5 | import java.lang.ref.WeakReference; 6 | 7 | /** 8 | * Created by tan on 11/04/2016. 9 | * CustomRunnable run some lengthy blocking code on a worker thread and notify UI thread when the 10 | * work is done 11 | */ 12 | public class CustomRunnable implements Runnable { 13 | // Keep a weak reference to ui callback, so we can send a message to the UI thread 14 | // Use weak reference to avoid leaking activity object 15 | private WeakReference uiThreadCallbackWeakReference; 16 | 17 | @Override 18 | public void run() { 19 | try { 20 | // Before running some lengthy and blocking work, check if the thread has been interrupted 21 | if (Thread.interrupted()) throw new InterruptedException(); 22 | 23 | // In real world app, you might do some blocking IO operation 24 | // In this example, I just let the thread sleep for 3 second 25 | Thread.sleep(3000); 26 | 27 | // After work is finished, send a message to UI thread 28 | Message message = Util.createMessage(Util.MESSAGE_ID, 29 | "Thread " + String.valueOf(Thread.currentThread().getId()) + " completed"); 30 | 31 | if(uiThreadCallbackWeakReference != null && uiThreadCallbackWeakReference.get() != null) { 32 | uiThreadCallbackWeakReference.get().publishToUiThread(message); 33 | } 34 | } catch (InterruptedException e) { 35 | e.printStackTrace(); 36 | } 37 | } 38 | 39 | public void setUiThreadCallback(UiThreadCallback uiThreadCallback) { 40 | this.uiThreadCallbackWeakReference = new WeakReference(uiThreadCallback); 41 | } 42 | } 43 | -------------------------------------------------------------------------------- /app/src/main/java/com/franktan/multithreadingblogs/CustomCallable.java: -------------------------------------------------------------------------------- 1 | package com.franktan.multithreadingblogs; 2 | 3 | import android.os.Message; 4 | 5 | import java.lang.ref.WeakReference; 6 | import java.util.concurrent.Callable; 7 | 8 | /** 9 | * Created by frank.yitan on 12/04/2016. 10 | * CustomCallable is used for sending tasks to the thread pool. When a callable is submitted, 11 | * a Future object is returned, allowing the thread pool manager to stop the task. 12 | */ 13 | public class CustomCallable implements Callable { 14 | 15 | // Keep a weak reference to the CustomThreadPoolManager singleton object, so we can send a 16 | // message. Use of weak reference is not a must here because CustomThreadPoolManager lives 17 | // across the whole application lifecycle 18 | private WeakReference mCustomThreadPoolManagerWeakReference; 19 | 20 | @Override 21 | public Object call() throws Exception { 22 | try { 23 | // check if thread is interrupted before lengthy operation 24 | if (Thread.interrupted()) throw new InterruptedException(); 25 | 26 | // In real world project, you might do some blocking IO operation 27 | // In this example, I just let the thread sleep for 3 second 28 | Thread.sleep(3000); 29 | 30 | // After work is finished, send a message to CustomThreadPoolManager 31 | Message message = Util.createMessage(Util.MESSAGE_ID, "Thread " + 32 | String.valueOf(Thread.currentThread().getId()) + " " + 33 | String.valueOf(Thread.currentThread().getName()) + " completed"); 34 | 35 | if(mCustomThreadPoolManagerWeakReference != null 36 | && mCustomThreadPoolManagerWeakReference.get() != null) { 37 | 38 | mCustomThreadPoolManagerWeakReference.get().sendMessageToUiThread(message); 39 | } 40 | } catch (InterruptedException e) { 41 | e.printStackTrace(); 42 | } 43 | return null; 44 | } 45 | 46 | public void setCustomThreadPoolManager(CustomThreadPoolManager customThreadPoolManager) { 47 | this.mCustomThreadPoolManagerWeakReference = new WeakReference(customThreadPoolManager); 48 | } 49 | } 50 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 16 | 17 |