├── .idea ├── .name ├── encodings.xml ├── compiler.xml ├── misc.xml ├── jarRepositories.xml └── codeStyles ├── app ├── .gitignore ├── src │ └── main │ │ ├── res │ │ ├── values │ │ │ ├── strings.xml │ │ │ ├── colors.xml │ │ │ └── styles.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 │ │ ├── mipmap-anydpi-v26 │ │ │ ├── ic_launcher.xml │ │ │ └── ic_launcher_round.xml │ │ ├── menu │ │ │ └── main.xml │ │ ├── layout │ │ │ ├── list_item.xml │ │ │ └── activity_main.xml │ │ ├── drawable-v24 │ │ │ └── ic_launcher_foreground.xml │ │ └── drawable │ │ │ └── ic_launcher_background.xml │ │ ├── AndroidManifest.xml │ │ └── java │ │ └── com │ │ └── lb │ │ └── asynctaskex │ │ ├── MainActivity.kt │ │ └── Utils.kt ├── proguard-rules.pro └── build.gradle ├── library ├── consumer-rules.pro ├── .gitignore ├── src │ └── main │ │ ├── AndroidManifest.xml │ │ └── java │ │ └── com │ │ └── lb │ │ └── async_task_ex │ │ ├── ForceQueuePolicy.kt │ │ ├── ScalingThreadPoolExecutor.kt │ │ ├── ScalingQueue.kt │ │ ├── AutoTaskManager.kt │ │ ├── AsyncTaskThreadPool.kt │ │ └── AsyncTaskEx.kt ├── build.gradle └── proguard-rules.pro ├── settings.gradle ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradle.properties ├── README.md ├── .gitignore ├── gradlew.bat ├── gradlew └── LICENSE /.idea/.name: -------------------------------------------------------------------------------- 1 | AsyncTaskEx -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /library/consumer-rules.pro: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /library/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /library/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':library' 2 | include ':app' 3 | rootProject.name = "AsyncTaskEx" 4 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | AsyncTaskEx 3 | 4 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AndroidDeveloperLB/AsyncTaskEx/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AndroidDeveloperLB/AsyncTaskEx/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AndroidDeveloperLB/AsyncTaskEx/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AndroidDeveloperLB/AsyncTaskEx/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AndroidDeveloperLB/AsyncTaskEx/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AndroidDeveloperLB/AsyncTaskEx/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AndroidDeveloperLB/AsyncTaskEx/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AndroidDeveloperLB/AsyncTaskEx/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AndroidDeveloperLB/AsyncTaskEx/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AndroidDeveloperLB/AsyncTaskEx/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AndroidDeveloperLB/AsyncTaskEx/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /.idea/encodings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /.idea/compiler.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #6200EE 4 | #3700B3 5 | #03DAC5 6 | 7 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Mon May 25 20:14:45 IDT 2020 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-all.zip 7 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 8 | 9 | 10 | -------------------------------------------------------------------------------- /library/src/main/java/com/lb/async_task_ex/ForceQueuePolicy.kt: -------------------------------------------------------------------------------- 1 | package com.lb.async_task_ex 2 | 3 | import java.util.concurrent.RejectedExecutionException 4 | import java.util.concurrent.RejectedExecutionHandler 5 | import java.util.concurrent.ThreadPoolExecutor 6 | 7 | internal class ForceQueuePolicy : RejectedExecutionHandler { 8 | override fun rejectedExecution(r: Runnable, executor: ThreadPoolExecutor) { 9 | try { 10 | executor.queue.put(r) 11 | } catch (e: InterruptedException) { 12 | // should never happen since we never wait 13 | throw RejectedExecutionException(e) 14 | } 15 | 16 | } 17 | } 18 | -------------------------------------------------------------------------------- /library/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | apply plugin: 'kotlin-android' 3 | apply plugin: 'kotlin-android-extensions' 4 | 5 | android { 6 | compileSdkVersion 31 7 | 8 | defaultConfig { 9 | minSdkVersion 16 10 | targetSdkVersion 31 11 | consumerProguardFiles "consumer-rules.pro" 12 | } 13 | 14 | buildTypes { 15 | release { 16 | minifyEnabled false 17 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 18 | } 19 | } 20 | } 21 | 22 | dependencies { 23 | implementation fileTree(dir: "libs", include: ["*.jar"]) 24 | implementation 'androidx.core:core-ktx:1.7.0' 25 | implementation 'com.google.android.material:material:1.6.0-alpha02' 26 | } 27 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 7 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | -------------------------------------------------------------------------------- /app/src/main/res/menu/main.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 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 | -------------------------------------------------------------------------------- /library/proguard-rules.pro: -------------------------------------------------------------------------------- 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 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | -------------------------------------------------------------------------------- /app/src/main/res/layout/list_item.xml: -------------------------------------------------------------------------------- 1 | 2 | 11 | 12 | 17 | 18 | 25 | 26 | 27 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 9 | 13 | 14 | 21 | 22 | -------------------------------------------------------------------------------- /library/src/main/java/com/lb/async_task_ex/ScalingThreadPoolExecutor.kt: -------------------------------------------------------------------------------- 1 | package com.lb.async_task_ex 2 | 3 | import java.util.concurrent.BlockingQueue 4 | import java.util.concurrent.ThreadFactory 5 | import java.util.concurrent.ThreadPoolExecutor 6 | import java.util.concurrent.TimeUnit 7 | import java.util.concurrent.atomic.AtomicInteger 8 | 9 | internal class ScalingThreadPoolExecutor(corePoolSize: Int, maximumPoolSize: Int, keepAliveTime: Long, unit: TimeUnit, workQueue: BlockingQueue, threadFactory: ThreadFactory) : ThreadPoolExecutor(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory) { 10 | /** 11 | * number of threads that are actively executing tasks 12 | */ 13 | private val activeCount = AtomicInteger() 14 | 15 | override fun getActiveCount(): Int { 16 | return activeCount.get() 17 | } 18 | 19 | override fun beforeExecute(t: Thread, r: Runnable) { 20 | activeCount.incrementAndGet() 21 | } 22 | 23 | override fun afterExecute(r: Runnable?, t: Throwable?) { 24 | activeCount.decrementAndGet() 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | apply plugin: 'kotlin-android' 3 | apply plugin: 'kotlin-android-extensions' 4 | 5 | android { 6 | compileSdkVersion 31 7 | 8 | defaultConfig { 9 | applicationId "com.lb.asynctaskex" 10 | minSdkVersion 16 11 | targetSdkVersion 31 12 | versionCode 1 13 | versionName "1.0" 14 | } 15 | 16 | buildTypes { 17 | release { 18 | minifyEnabled false 19 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 20 | } 21 | } 22 | compileOptions { 23 | sourceCompatibility JavaVersion.VERSION_1_8 24 | targetCompatibility JavaVersion.VERSION_1_8 25 | } 26 | } 27 | 28 | dependencies { 29 | implementation fileTree(dir: "libs", include: ["*.jar"]) 30 | implementation 'androidx.core:core-ktx:1.7.0' 31 | implementation 'com.google.android.material:material:1.6.0-alpha02' 32 | implementation 'androidx.constraintlayout:constraintlayout:2.1.3' 33 | implementation project(path: ':library') 34 | implementation 'androidx.recyclerview:recyclerview:1.2.1' 35 | 36 | } 37 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | # IDE (e.g. Android Studio) users: 3 | # Gradle settings configured through the IDE *will override* 4 | # any settings specified in this file. 5 | # For more details on how to configure your build environment visit 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html 7 | # Specifies the JVM arguments used for the daemon process. 8 | # The setting is particularly useful for tweaking memory settings. 9 | org.gradle.jvmargs=-Xmx2048m 10 | # When configured, Gradle will run in incubating parallel mode. 11 | # This option should only be used with decoupled projects. More details, visit 12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 13 | # org.gradle.parallel=true 14 | # AndroidX package structure to make it clearer which packages are bundled with the 15 | # Android operating system, and which are packaged with your app"s APK 16 | # https://developer.android.com/topic/libraries/support-library/androidx-rn 17 | android.useAndroidX=true 18 | # Automatically convert third-party libraries to use AndroidX 19 | android.enableJetifier=true 20 | # Kotlin code style for this project: "official" or "obsolete": 21 | #kotlin.code.style=official 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | 2 | # AsyncTaskEx 3 | A modified version of AsyncTask, in Kotlin, with some things removed and some added 4 | 5 | Using some simple clases in a similar manner to Glide and AsyncTask, you can run tiny tasks in the background easily. 6 | 7 | Advantages: 8 | 1. Can be created and executed everywhere. Not just on the main, UI thread 9 | 2. Optionally be auto-cancelled via the lifecycle 10 | 3. Has only one value to handle: the result. For parameters and progress, you can add your own implementation. 11 | 4. Kotlin, so safer in terms of nullability 12 | 5. Consistent behavior for all Android versions. 13 | 14 | Check the sample for an example of how to use it. 15 | 16 | Here's a short version of it: 17 | 18 | private val pool = AsyncTaskThreadPool(1, 2) 19 | private val autoTaskManager = AutoTaskManager(this, null, pool, true) 20 | 21 | ... 22 | 23 | autoTaskManager.addTaskAndCancelPreviousTask(holder.itemView, object : AsyncTaskEx() { 24 | ... 25 | }).execute() 26 | 27 | 28 | To import, use (link: https://jitpack.io/#AndroidDeveloperLB/AsyncTaskEx/ ) : 29 | 30 | allprojects { 31 | repositories { 32 | ... 33 | maven { url 'https://jitpack.io' } 34 | } 35 | } 36 | 37 | dependencies { 38 | implementation 'com.github.AndroidDeveloperLB:AsyncTaskEx:#' 39 | } 40 | -------------------------------------------------------------------------------- /.idea/jarRepositories.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 9 | 10 | 14 | 15 | 19 | 20 | 24 | 25 | 29 | 30 | 34 | 35 | -------------------------------------------------------------------------------- /library/src/main/java/com/lb/async_task_ex/ScalingQueue.kt: -------------------------------------------------------------------------------- 1 | package com.lb.async_task_ex 2 | 3 | import java.util.concurrent.LinkedBlockingQueue 4 | import java.util.concurrent.ThreadPoolExecutor 5 | 6 | internal class ScalingQueue : LinkedBlockingQueue { 7 | /** 8 | * The executor this Queue belongs to 9 | */ 10 | private var executor: ThreadPoolExecutor? = null 11 | 12 | /** 13 | * Creates a TaskQueue with a capacity of [Integer.MAX_VALUE]. 14 | */ 15 | constructor() : super() 16 | 17 | /** 18 | * Creates a TaskQueue with the given (fixed) capacity. 19 | * 20 | * @param capacity the capacity of this queue. 21 | */ 22 | constructor(capacity: Int) : super(capacity) 23 | 24 | /** 25 | * Sets the executor this queue belongs to. 26 | */ 27 | fun setThreadPoolExecutor(executor: ThreadPoolExecutor) { 28 | this.executor = executor 29 | } 30 | 31 | /** 32 | * Inserts the specified element at the tail of this queue if there is at least one available thread to run the 33 | * current task. If all pool threads are actively busy, it rejects the offer. 34 | * 35 | * @param o the element to add. 36 | * @return true if it was possible to add the element to this queue, else false 37 | * @see ThreadPoolExecutor.execute 38 | */ 39 | override fun offer(o: T): Boolean { 40 | val allWorkingThreads = executor!!.activeCount + super.size 41 | return allWorkingThreads < executor!!.poolSize && super.offer(o) 42 | } 43 | 44 | companion object { 45 | private const val serialVersionUID = 2868771663367097439L 46 | } 47 | } 48 | -------------------------------------------------------------------------------- /library/src/main/java/com/lb/async_task_ex/AutoTaskManager.kt: -------------------------------------------------------------------------------- 1 | package com.lb.async_task_ex 2 | 3 | import android.view.View 4 | import androidx.annotation.UiThread 5 | import androidx.appcompat.app.AppCompatActivity 6 | import androidx.lifecycle.Lifecycle 7 | import androidx.lifecycle.LifecycleObserver 8 | import androidx.lifecycle.OnLifecycleEvent 9 | 10 | /**used to handle tasks that are associated to views, similar to Glide */ 11 | class AutoTaskManager( 12 | activity: AppCompatActivity?, fragment: androidx.fragment.app.Fragment?, 13 | private val threadPool: AsyncTaskThreadPool?, private val cancelUsingInterruption: Boolean = false) { 14 | private val tasks = HashMap>() 15 | 16 | init { 17 | (fragment?.lifecycle ?: activity?.lifecycle)?.addObserver(object : LifecycleObserver { 18 | @Suppress("unused") 19 | @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY) 20 | fun onDestroy() = cancelAllTasks() 21 | }) 22 | } 23 | 24 | @UiThread 25 | fun cancelAllTasks() { 26 | threadPool?.cancelAllTasks(cancelUsingInterruption) 27 | for (task in tasks.values) 28 | task.cancel(cancelUsingInterruption) 29 | tasks.clear() 30 | } 31 | 32 | @UiThread 33 | fun cancelTaskOfView(view: View) { 34 | val previousTask = tasks[view] 35 | previousTask?.cancel(cancelUsingInterruption) 36 | } 37 | 38 | @UiThread 39 | fun addTaskAndCancelPreviousTask(view: View, task: AsyncTaskEx): AsyncTaskEx { 40 | //TODO add function for also executing right away 41 | val previousTask = tasks[view] 42 | previousTask?.cancel(cancelUsingInterruption) 43 | tasks[view] = task 44 | return task 45 | } 46 | } 47 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Built application files 2 | *.apk 3 | *.aar 4 | *.ap_ 5 | *.aab 6 | 7 | # Files for the ART/Dalvik VM 8 | *.dex 9 | 10 | # Java class files 11 | *.class 12 | 13 | # Generated files 14 | bin/ 15 | gen/ 16 | out/ 17 | # Uncomment the following line in case you need and you don't have the release build type files in your app 18 | # release/ 19 | 20 | # Gradle files 21 | .gradle/ 22 | build/ 23 | 24 | # Local configuration file (sdk path, etc) 25 | local.properties 26 | 27 | # Proguard folder generated by Eclipse 28 | proguard/ 29 | 30 | # Log Files 31 | *.log 32 | 33 | # Android Studio Navigation editor temp files 34 | .navigation/ 35 | 36 | # Android Studio captures folder 37 | captures/ 38 | 39 | # IntelliJ 40 | *.iml 41 | .idea/workspace.xml 42 | .idea/tasks.xml 43 | .idea/gradle.xml 44 | .idea/assetWizardSettings.xml 45 | .idea/dictionaries 46 | .idea/libraries 47 | # Android Studio 3 in .gitignore file. 48 | .idea/caches 49 | .idea/modules.xml 50 | # Comment next line if keeping position of elements in Navigation Editor is relevant for you 51 | .idea/navEditor.xml 52 | 53 | # Keystore files 54 | # Uncomment the following lines if you do not want to check your keystore files in. 55 | #*.jks 56 | #*.keystore 57 | 58 | # External native build folder generated in Android Studio 2.2 and later 59 | .externalNativeBuild 60 | .cxx/ 61 | 62 | # Google Services (e.g. APIs or Firebase) 63 | # google-services.json 64 | 65 | # Freeline 66 | freeline.py 67 | freeline/ 68 | freeline_project_description.json 69 | 70 | # fastlane 71 | fastlane/report.xml 72 | fastlane/Preview.html 73 | fastlane/screenshots 74 | fastlane/test_output 75 | fastlane/readme.md 76 | 77 | # Version control 78 | vcs.xml 79 | 80 | # lint 81 | lint/intermediates/ 82 | lint/generated/ 83 | lint/outputs/ 84 | lint/tmp/ 85 | # lint/reports/ 86 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 9 | 15 | 18 | 21 | 22 | 23 | 24 | 30 | 31 | -------------------------------------------------------------------------------- /.idea/codeStyles: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 17 | 18 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | -------------------------------------------------------------------------------- /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 | set DIRNAME=%~dp0 12 | if "%DIRNAME%" == "" set DIRNAME=. 13 | set APP_BASE_NAME=%~n0 14 | set APP_HOME=%DIRNAME% 15 | 16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 17 | set DEFAULT_JVM_OPTS= 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 Windows variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | 53 | :win9xME_args 54 | @rem Slurp the command line arguments. 55 | set CMD_LINE_ARGS= 56 | set _SKIP=2 57 | 58 | :win9xME_args_slurp 59 | if "x%~1" == "x" goto execute 60 | 61 | set CMD_LINE_ARGS=%* 62 | 63 | :execute 64 | @rem Setup the command line 65 | 66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 67 | 68 | @rem Execute Gradle 69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 70 | 71 | :end 72 | @rem End local scope for the variables with windows NT shell 73 | if "%ERRORLEVEL%"=="0" goto mainEnd 74 | 75 | :fail 76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 77 | rem the _cmd.exe /c_ return code! 78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 79 | exit /b 1 80 | 81 | :mainEnd 82 | if "%OS%"=="Windows_NT" endlocal 83 | 84 | :omega 85 | -------------------------------------------------------------------------------- /library/src/main/java/com/lb/async_task_ex/AsyncTaskThreadPool.kt: -------------------------------------------------------------------------------- 1 | package com.lb.async_task_ex 2 | 3 | import com.lb.async_task_ex.AsyncTaskEx.OnFinishedListener 4 | import java.util.* 5 | import java.util.concurrent.ThreadFactory 6 | import java.util.concurrent.ThreadPoolExecutor 7 | import java.util.concurrent.TimeUnit 8 | import java.util.concurrent.atomic.AtomicInteger 9 | import kotlin.math.max 10 | 11 | /** 12 | * a thread pool that contains tasks to run like on asyncTask.

13 | * also has the ability to use a stack instead of a queue for the order of tasks 14 | */ 15 | class AsyncTaskThreadPool @JvmOverloads constructor(minNumberOfThread: Int = CORE_POOL_SIZE, maxNumberOfThread: Int = MAXIMUM_POOL_SIZE, keepAliveTimeInSeconds: Int = TIME_TO_KEEP_ALIVE_IN_SECONDS) { 16 | private val executor: ThreadPoolExecutor 17 | private val tasks = HashSet>() 18 | val tasksCount: Int 19 | get() = tasks.size 20 | 21 | init { 22 | val poolWorkQueue = ScalingQueue() 23 | val threadFactory = object : ThreadFactory { 24 | private val count = AtomicInteger(1) 25 | override fun newThread(r: Runnable): Thread { 26 | val thread = Thread(r, "thread #" + count.getAndIncrement()) 27 | thread.priority = Thread.MIN_PRIORITY 28 | return thread 29 | } 30 | } 31 | // needed because normal ThreadPoolExecutor always uses a single thread. 32 | executor = ScalingThreadPoolExecutor(minNumberOfThread, maxNumberOfThread, keepAliveTimeInSeconds.toLong(), TimeUnit.SECONDS, poolWorkQueue, threadFactory) 33 | executor.rejectedExecutionHandler = ForceQueuePolicy() 34 | poolWorkQueue.setThreadPoolExecutor(executor) 35 | } 36 | 37 | /** 38 | * runs the task and remembers it till it finishes. 39 | */ 40 | fun executeAsyncTask(task: AsyncTaskEx) { 41 | task.addOnFinishedListener(object : OnFinishedListener { 42 | override fun onFinished() { 43 | tasks.remove(task) 44 | task.removeOnFinishedListener(this) 45 | } 46 | }) 47 | tasks.add(task) 48 | task.executeOnExecutor(executor) 49 | } 50 | 51 | fun cancelAllTasks(alsoInterrupt: Boolean) { 52 | for (task in tasks) 53 | task.cancel(alsoInterrupt) 54 | tasks.clear() 55 | } 56 | 57 | companion object { 58 | // classes used for the threadPool were created because of an issue with customized parameters of 59 | // ThreadPoolExecutor: 60 | // https://github.com/kimchy/kimchy.github.com/blob/master/_posts/2008-11-23-juc-executorservice-gotcha.textile 61 | private const val TIME_TO_KEEP_ALIVE_IN_SECONDS = 10 62 | private const val CORE_POOL_SIZE = 1 63 | private val MAXIMUM_POOL_SIZE = max(CORE_POOL_SIZE, Runtime.getRuntime().availableProcessors() - 1) 64 | } 65 | } 66 | -------------------------------------------------------------------------------- /app/src/main/java/com/lb/asynctaskex/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package com.lb.asynctaskex 2 | 3 | import android.content.Intent 4 | import android.graphics.Bitmap 5 | import android.net.Uri 6 | import android.os.Bundle 7 | import android.view.LayoutInflater 8 | import android.view.Menu 9 | import android.view.MenuItem 10 | import android.view.ViewGroup 11 | import androidx.appcompat.app.AppCompatActivity 12 | import androidx.recyclerview.widget.RecyclerView 13 | import com.lb.async_task_ex.AsyncTaskEx 14 | import com.lb.async_task_ex.AsyncTaskThreadPool 15 | import com.lb.async_task_ex.AutoTaskManager 16 | import kotlinx.android.synthetic.main.activity_main.* 17 | import kotlinx.android.synthetic.main.list_item.view.* 18 | 19 | class MainActivity : AppCompatActivity() { 20 | private val pool = AsyncTaskThreadPool(1, 2) 21 | private val autoTaskManager = AutoTaskManager(this, null, pool, true) 22 | 23 | override fun onCreate(savedInstanceState: Bundle?) { 24 | super.onCreate(savedInstanceState) 25 | setContentView(R.layout.activity_main) 26 | val installedApplications = packageManager.getInstalledApplications(0) 27 | recyclerView.adapter = object : RecyclerView.Adapter() { 28 | override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder { 29 | return object : RecyclerView.ViewHolder(LayoutInflater.from(this@MainActivity).inflate(R.layout.list_item, parent, false)) {} 30 | } 31 | 32 | override fun getItemCount(): Int = installedApplications.size 33 | 34 | override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) { 35 | holder.itemView.imageView.setImageBitmap(null) 36 | val applicationInfo = installedApplications[position] 37 | holder.itemView.textView.text = applicationInfo.loadLabel(packageManager) as String 38 | autoTaskManager.addTaskAndCancelPreviousTask(holder.itemView, object : AsyncTaskEx() { 39 | override fun doInBackground(): Bitmap? { 40 | // val startTime = System.currentTimeMillis() 41 | //this function is usually very quick, but even on Pixel 4 it can take up to 54 ms, so we use background thread for it: 42 | val result = Utils.getAppIcon(this@MainActivity, applicationInfo) 43 | // val endTime = System.currentTimeMillis() 44 | // Log.d("AppLog", "time:${endTime - startTime}") 45 | return result 46 | } 47 | 48 | override fun onPostExecute(result: Bitmap?) { 49 | super.onPostExecute(result) 50 | holder.itemView.imageView.setImageBitmap(result) 51 | } 52 | }).execute() 53 | } 54 | } 55 | } 56 | 57 | 58 | override fun onCreateOptionsMenu(menu: Menu): Boolean { 59 | menuInflater.inflate(R.menu.main, menu) 60 | return true 61 | } 62 | 63 | override fun onOptionsItemSelected(item: MenuItem): Boolean { 64 | var url: String? = null 65 | when (item.itemId) { 66 | R.id.menuItem_all_my_apps -> url = "https://play.google.com/store/apps/developer?id=AndroidDeveloperLB" 67 | R.id.menuItem_all_my_repositories -> url = "https://github.com/AndroidDeveloperLB" 68 | R.id.menuItem_current_repository_website -> url = "https://github.com/AndroidDeveloperLB/AsyncTaskEx" 69 | } 70 | if (url == null) 71 | return true 72 | val intent = Intent(Intent.ACTION_VIEW, Uri.parse(url)) 73 | @Suppress("DEPRECATION") 74 | intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY or Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) 75 | intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_MULTIPLE_TASK) 76 | startActivity(intent) 77 | return true 78 | } 79 | } 80 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Attempt to set APP_HOME 10 | # Resolve links: $0 may be a link 11 | PRG="$0" 12 | # Need this for relative symlinks. 13 | while [ -h "$PRG" ] ; do 14 | ls=`ls -ld "$PRG"` 15 | link=`expr "$ls" : '.*-> \(.*\)$'` 16 | if expr "$link" : '/.*' > /dev/null; then 17 | PRG="$link" 18 | else 19 | PRG=`dirname "$PRG"`"/$link" 20 | fi 21 | done 22 | SAVED="`pwd`" 23 | cd "`dirname \"$PRG\"`/" >/dev/null 24 | APP_HOME="`pwd -P`" 25 | cd "$SAVED" >/dev/null 26 | 27 | APP_NAME="Gradle" 28 | APP_BASE_NAME=`basename "$0"` 29 | 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 31 | DEFAULT_JVM_OPTS="" 32 | 33 | # Use the maximum available, or set MAX_FD != -1 to use that value. 34 | MAX_FD="maximum" 35 | 36 | warn () { 37 | echo "$*" 38 | } 39 | 40 | die () { 41 | echo 42 | echo "$*" 43 | echo 44 | exit 1 45 | } 46 | 47 | # OS specific support (must be 'true' or 'false'). 48 | cygwin=false 49 | msys=false 50 | darwin=false 51 | nonstop=false 52 | case "`uname`" in 53 | CYGWIN* ) 54 | cygwin=true 55 | ;; 56 | Darwin* ) 57 | darwin=true 58 | ;; 59 | MINGW* ) 60 | msys=true 61 | ;; 62 | NONSTOP* ) 63 | nonstop=true 64 | ;; 65 | esac 66 | 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 68 | 69 | # Determine the Java command to use to start the JVM. 70 | if [ -n "$JAVA_HOME" ] ; then 71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 72 | # IBM's JDK on AIX uses strange locations for the executables 73 | JAVACMD="$JAVA_HOME/jre/sh/java" 74 | else 75 | JAVACMD="$JAVA_HOME/bin/java" 76 | fi 77 | if [ ! -x "$JAVACMD" ] ; then 78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 79 | 80 | Please set the JAVA_HOME variable in your environment to match the 81 | location of your Java installation." 82 | fi 83 | else 84 | JAVACMD="java" 85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 86 | 87 | Please set the JAVA_HOME variable in your environment to match the 88 | location of your Java installation." 89 | fi 90 | 91 | # Increase the maximum file descriptors if we can. 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 93 | MAX_FD_LIMIT=`ulimit -H -n` 94 | if [ $? -eq 0 ] ; then 95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 96 | MAX_FD="$MAX_FD_LIMIT" 97 | fi 98 | ulimit -n $MAX_FD 99 | if [ $? -ne 0 ] ; then 100 | warn "Could not set maximum file descriptor limit: $MAX_FD" 101 | fi 102 | else 103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 104 | fi 105 | fi 106 | 107 | # For Darwin, add options to specify how the application appears in the dock 108 | if $darwin; then 109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 110 | fi 111 | 112 | # For Cygwin, switch paths to Windows format before running java 113 | if $cygwin ; then 114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 116 | JAVACMD=`cygpath --unix "$JAVACMD"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Escape application args 158 | save () { 159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 160 | echo " " 161 | } 162 | APP_ARGS=$(save "$@") 163 | 164 | # Collect all arguments for the java command, following the shell quoting and substitution rules 165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 166 | 167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong 168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then 169 | cd "$(dirname "$0")" 170 | fi 171 | 172 | exec "$JAVACMD" "$@" 173 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 171 | -------------------------------------------------------------------------------- /app/src/main/java/com/lb/asynctaskex/Utils.kt: -------------------------------------------------------------------------------- 1 | package com.lb.asynctaskex 2 | 3 | import android.app.ActivityManager 4 | import android.content.Context 5 | import android.content.pm.ApplicationInfo 6 | import android.content.res.Resources 7 | import android.graphics.Bitmap 8 | import android.graphics.BitmapFactory 9 | import android.graphics.drawable.AdaptiveIconDrawable 10 | import android.graphics.drawable.BitmapDrawable 11 | import android.graphics.drawable.Drawable 12 | import android.os.Build 13 | import android.util.DisplayMetrics 14 | import android.util.TypedValue 15 | import androidx.appcompat.content.res.AppCompatResources 16 | import androidx.core.content.res.ResourcesCompat 17 | import androidx.core.graphics.drawable.toBitmap 18 | import kotlin.math.min 19 | import kotlin.math.roundToInt 20 | 21 | object Utils { 22 | private var appIconSize = 0 23 | 24 | @JvmStatic 25 | @JvmOverloads 26 | fun getAppIcon(context: Context, applicationInfo: ApplicationInfo, requestedImageSize: Int = 0): Bitmap? { 27 | val packageName = applicationInfo.packageName 28 | val iconResId = applicationInfo.icon 29 | val packageManager = context.packageManager 30 | while (true) { 31 | if (iconResId == 0) 32 | break 33 | val resources: Resources? 34 | try { 35 | resources = packageManager.getResourcesForApplication(applicationInfo) 36 | if (resources == null) 37 | break 38 | } catch (e: Exception) { 39 | break 40 | } 41 | val bitmapOptions: BitmapFactory.Options? 42 | try { 43 | bitmapOptions = getBitmapOptions(resources, iconResId) 44 | } catch (e: Exception) { 45 | break 46 | } 47 | if (bitmapOptions.outHeight <= 0 || bitmapOptions.outWidth <= 0) { 48 | try { 49 | val densityToUse = context.resources.displayMetrics.densityDpi.coerceAtLeast(if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) DisplayMetrics.DENSITY_XXXHIGH else DisplayMetrics.DENSITY_XXHIGH) 50 | val drawableForDensity = ResourcesCompat.getDrawableForDensity(resources, iconResId, densityToUse, null) 51 | val drawable: Drawable = drawableForDensity ?: (run { 52 | val otherContext = context.createPackageContext(packageName, 0) 53 | AppCompatResources.getDrawable(otherContext, iconResId) 54 | }) ?: break 55 | val result: Bitmap? 56 | result = convertAppIconDrawableToBitmap(context, drawable) 57 | return result 58 | } catch (ignored: Exception) { 59 | } 60 | break 61 | } 62 | val appIconSize = if (requestedImageSize <= 0) getAppIconSize(context) else min(requestedImageSize, getAppIconSize(context)) 63 | prepareBitmapOptionsForSampling(bitmapOptions, appIconSize, appIconSize) 64 | val result = BitmapFactory.decodeResource(resources, iconResId, bitmapOptions) 65 | if (result != null) 66 | return result 67 | break 68 | } 69 | try { 70 | val icon = packageManager.getApplicationIcon(packageName) 71 | return convertAppIconDrawableToBitmap(context, icon) 72 | } catch (ignored: Exception) { 73 | } 74 | return null 75 | } 76 | 77 | @JvmStatic 78 | fun getBitmapOptions(res: Resources, resId: Int): BitmapFactory.Options { 79 | val bitmapOptions = BitmapFactory.Options() 80 | bitmapOptions.inJustDecodeBounds = true 81 | BitmapFactory.decodeResource(res, resId, bitmapOptions) 82 | return bitmapOptions 83 | } 84 | 85 | @JvmStatic 86 | fun convertAppIconDrawableToBitmap(context: Context, drawable: Drawable): Bitmap { 87 | if (drawable is BitmapDrawable) 88 | return drawable.bitmap 89 | val appIconSize = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && drawable is AdaptiveIconDrawable) 90 | convertDpToPixels(context, 108f).toInt() 91 | else getAppIconSize(context) 92 | return drawable.toBitmap(appIconSize, appIconSize, Bitmap.Config.ARGB_8888) 93 | } 94 | 95 | @JvmStatic 96 | fun convertDpToPixels(context: Context, dp: Float): Float { 97 | return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, context.resources.displayMetrics) 98 | } 99 | 100 | @JvmStatic 101 | fun getAppIconSize(context: Context): Int { 102 | if (appIconSize > 0) 103 | return appIconSize 104 | val activityManager = context.getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager 105 | //https://console.firebase.google.com/u/0/project/app-manager-cdf2c/crashlytics/app/android:com.lb.app_manager/issues/d5c98cf94a3d87148b915413f2583657?time=last-seven-days&sessionId=5D4B95C60017000214A7E2D1546BCD11_DNE_0_v2 106 | //TODO maybe after API 6 it's not needed to use try-catch 107 | appIconSize = try { 108 | activityManager.launcherLargeIconSize 109 | } catch (e: Exception) { 110 | convertDpToPixels(context, 48f).toInt() 111 | } 112 | return appIconSize 113 | } 114 | 115 | @JvmStatic 116 | fun prepareBitmapOptionsForSampling(bitmapOptions: BitmapFactory.Options, reqWidth: Int, reqHeight: Int) { 117 | bitmapOptions.inTargetDensity = 1 118 | bitmapOptions.inJustDecodeBounds = false 119 | if (reqHeight <= 0 && reqWidth <= 0) 120 | return 121 | bitmapOptions.inDensity = 1 122 | var sampleSize = 1 123 | bitmapOptions.inSampleSize = 1 124 | val height = bitmapOptions.outHeight 125 | val width = bitmapOptions.outWidth 126 | var preferHeight = false 127 | bitmapOptions.inDensity = 1 128 | bitmapOptions.inTargetDensity = 1 129 | if (height <= reqHeight && width <= reqWidth) 130 | return 131 | if (height > reqHeight || width > reqWidth) 132 | if (width > height && reqHeight >= 1) { 133 | preferHeight = true 134 | sampleSize = (height.toFloat() / reqHeight.toFloat()).roundToInt() 135 | } else if (reqWidth >= 1) { 136 | sampleSize = (width.toFloat() / reqWidth.toFloat()).roundToInt() 137 | preferHeight = false 138 | } 139 | // as much as possible, use google's way to downsample: 140 | while (bitmapOptions.inSampleSize * 2 <= sampleSize) 141 | bitmapOptions.inSampleSize *= 2 142 | // if google's way to downsample isn't enough, do some more : 143 | if (bitmapOptions.inSampleSize != sampleSize) { 144 | // downsample by bitmapOptions.inSampleSize/originalSampleSize . 145 | bitmapOptions.inTargetDensity = bitmapOptions.inSampleSize 146 | bitmapOptions.inDensity = sampleSize 147 | } else if (sampleSize == 1) { 148 | bitmapOptions.inTargetDensity = if (preferHeight) reqHeight else reqWidth 149 | bitmapOptions.inDensity = if (preferHeight) height else width 150 | } 151 | } 152 | } 153 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /library/src/main/java/com/lb/async_task_ex/AsyncTaskEx.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2008 The Android Open Source Project 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | package com.lb.async_task_ex 17 | 18 | import android.os.* 19 | import java.io.File 20 | import java.io.FileFilter 21 | import java.util.* 22 | import java.util.concurrent.* 23 | import java.util.concurrent.atomic.AtomicBoolean 24 | import java.util.concurrent.atomic.AtomicInteger 25 | import java.util.regex.Pattern 26 | import kotlin.math.max 27 | 28 | /** 29 | * same as [AsyncTask] but doesn't have a limit on the number of tasks,plus it uses threads as many as the

30 | * number of cores , minus 1 (or a single thread if it's a single core device) 31 | */ 32 | abstract class AsyncTaskEx { 33 | private val future: FutureTask 34 | private val cancelled = AtomicBoolean() 35 | private val taskInvoked = AtomicBoolean() 36 | private val onFinishedListeners = HashSet() 37 | /** 38 | * Returns the current status of this task. 39 | * 40 | * @return The current status. 41 | */ 42 | @Volatile 43 | var status = Status.PENDING 44 | private set 45 | /** 46 | * Returns true if this task was cancelled before it completed normally. If you are calling [.cancel] on the task, 47 | * the value returned by this method should be checked periodically from [.doInBackground] to end the task as soon as possible. 48 | * 49 | * @return true if task was cancelled before it completed 50 | * @see .cancel 51 | */ 52 | val isCancelled: Boolean 53 | get() = cancelled.get() 54 | 55 | /** 56 | * Creates a new asynchronous task. This constructor must be invoked on the UI thread. 57 | */ 58 | init { 59 | val worker = object : WorkerRunnable() { 60 | override fun call(): Result? { 61 | taskInvoked.set(true) 62 | Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND) 63 | return postResult(doInBackground()) 64 | } 65 | } 66 | future = object : FutureTask(worker) { 67 | override fun done() { 68 | try { 69 | postResultIfNotInvoked(get()) 70 | } catch (e: InterruptedException) { 71 | android.util.Log.w(LOG_TAG, e) 72 | } catch (e: ExecutionException) { 73 | throw RuntimeException("An error occured while executing doInBackground()", e.cause) 74 | } catch (e: CancellationException) { 75 | postResultIfNotInvoked(null) 76 | } 77 | } 78 | } 79 | } 80 | 81 | private fun postResultIfNotInvoked(result: Result?) { 82 | val wasTaskInvoked = taskInvoked.get() 83 | if (!wasTaskInvoked) 84 | postResult(result) 85 | } 86 | 87 | private fun postResult(result: Result?): Result? { 88 | val message = sHandler.obtainMessage(MESSAGE_POST_RESULT, AsyncTaskExResult(this, result)) 89 | message.sendToTarget() 90 | return result 91 | } 92 | 93 | /** 94 | * Override this method to perform a computation on a background thread. The specified parameters are the parameters 95 | * passed to [.execute] by the caller of this task. This method can call [.publishProgress] to publish 96 | * updates on the UI thread. 97 | * 98 | * @return A result, defined by the subclass of this task. 99 | * @see .onPreExecute 100 | * @see .onPostExecute 101 | * 102 | * @see .publishProgress 103 | */ 104 | abstract fun doInBackground(): Result 105 | 106 | /** 107 | * Runs on the UI thread before [.doInBackground]. 108 | * 109 | * @see .onPostExecute 110 | * 111 | * @see .doInBackground 112 | */ 113 | protected open fun onPreExecute() {} 114 | 115 | /** 116 | * 117 | * 118 | * Runs on the UI thread after [.doInBackground]. The specified result is the value returned by [.doInBackground]. 119 | * 120 | * 121 | * 122 | * This method won't be invoked if the task was cancelled. 123 | * 124 | * 125 | * @param result The result of the operation computed by [.doInBackground]. 126 | * @see .onPreExecute 127 | * 128 | * @see .doInBackground 129 | * 130 | * @see .onCancelled 131 | */ 132 | open fun onPostExecute(result: Result?) {} 133 | 134 | /** 135 | * 136 | * 137 | * Runs on the UI thread after [.cancel] is invoked and [.doInBackground] has finished. 138 | * 139 | * 140 | * 141 | * The default implementation simply invokes [.onCancelled] and ignores the result. If you write your own implementation, do not call `super.onCancelled(result)`. 142 | * 143 | * 144 | * @param result The result, if any, computed in [.doInBackground], can be null 145 | * @see .cancel 146 | * @see .isCancelled 147 | */ 148 | @Suppress("MemberVisibilityCanBePrivate") 149 | protected fun onCancelled(@Suppress("UNUSED_PARAMETER") result: Result?) { 150 | onCancelled() 151 | } 152 | 153 | /** 154 | * 155 | * 156 | * Applications should preferably override [.onCancelled]. This method is invoked by the default implementation of [.onCancelled]. 157 | * 158 | * 159 | * 160 | * Runs on the UI thread after [.cancel] is invoked and [.doInBackground] has finished. 161 | * 162 | * 163 | * @see .onCancelled 164 | * @see .cancel 165 | * @see .isCancelled 166 | */ 167 | protected open fun onCancelled() {} 168 | 169 | /** 170 | * 171 | * 172 | * Attempts to cancel execution of this task. This attempt will fail if the task has already completed, already been cancelled, 173 | * or could not be cancelled for some other reason. If successful, and this task has not started when cancel is called, 174 | * this task should never run. If the task has already started, then the mayInterruptIfRunning parameter determines whether the thread 175 | * executing this task should be interrupted in an attempt to stop the task. 176 | * 177 | * 178 | * 179 | * Calling this method will result in [.onCancelled] being invoked on the UI thread after [.doInBackground] returns. 180 | * Calling this method guarantees that [.onPostExecute] is never invoked. After invoking this method, you should check the value 181 | * returned by [.isCancelled] periodically from [.doInBackground] to finish the task as early as possible. 182 | * 183 | * 184 | * @param mayInterruptIfRunning true if the thread executing this task should be interrupted; otherwise, in-progress tasks 185 | * are allowed to complete. 186 | * @return false if the task could not be cancelled, typically because it has already completed normally; true otherwise 187 | * @see .isCancelled 188 | * @see .onCancelled 189 | */ 190 | fun cancel(mayInterruptIfRunning: Boolean): Boolean { 191 | cancelled.set(true) 192 | return future.cancel(mayInterruptIfRunning) 193 | } 194 | 195 | /** 196 | * Waits if necessary for the computation to complete, and then retrieves its result. 197 | * 198 | * @return The computed result. 199 | * @throws CancellationException If the computation was cancelled. 200 | * @throws ExecutionException If the computation threw an exception. 201 | * @throws InterruptedException If the current thread was interrupted while waiting. 202 | */ 203 | @Throws(InterruptedException::class, ExecutionException::class) 204 | fun get(): Result { 205 | return future.get() 206 | } 207 | 208 | /** 209 | * Waits if necessary for at most the given time for the computation to complete, and then retrieves its result. 210 | * 211 | * @param timeout Time to wait before cancelling the operation. 212 | * @param unit The time unit for the timeout. 213 | * @return The computed result. 214 | * @throws CancellationException If the computation was cancelled. 215 | * @throws ExecutionException If the computation threw an exception. 216 | * @throws InterruptedException If the current thread was interrupted while waiting. 217 | * @throws TimeoutException If the wait timed out. 218 | */ 219 | @Throws(InterruptedException::class, ExecutionException::class, TimeoutException::class) 220 | operator fun get(timeout: Long, unit: TimeUnit): Result { 221 | return future.get(timeout, unit) 222 | } 223 | 224 | /** 225 | * Executes the task with the specified parameters. The task returns itself (this) so that the caller can keep a 226 | * reference to it. 227 | * 228 | * 229 | * Note: this function schedules the task on a queue for a single background thread or pool of threads depending on the platform version. When first introduced, CustomAsyncTasks were executed serially on a single background thread. Starting with [android.os.Build.VERSION_CODES.DONUT], this was changed to a pool of threads allowing multiple tasks to operate in parallel. Starting [android.os.Build.VERSION_CODES.HONEYCOMB], tasks are back to being executed on a single thread to avoid common application errors caused by parallel execution. If you truly want parallel execution, you can use the [.executeOnExecutor] version of this method with [.THREAD_POOL_EXECUTOR]; however, see commentary there for warnings on its use. 230 | * 231 | * 232 | * This method must be invoked on the UI thread. 233 | * 234 | * @return This instance of CustomAsyncTask. 235 | * @throws IllegalStateException If [.getStatus] returns either [AsyncTaskEx.Status.RUNNING] or [AsyncTaskEx.Status.FINISHED]. 236 | * @see .executeOnExecutor 237 | * @see .execute 238 | */ 239 | fun execute(): AsyncTaskEx { 240 | return executeOnExecutor(sDefaultExecutor) 241 | } 242 | 243 | /** 244 | * Executes the task with the specified parameters. The task returns itself (this) so that the caller can keep a 245 | * reference to it. 246 | * 247 | * 248 | * This method is typically used with [.THREAD_POOL_EXECUTOR] to allow multiple tasks to run in parallel on a pool of threads managed by CustomAsyncTask, however you can also use your own [Executor] for custom behavior. 249 | * 250 | * 251 | * *Warning:* Allowing multiple tasks to run in parallel from a thread pool is generally *not* what one wants, because the order of their 252 | * operation is not defined. For example, if these tasks are used to modify any state in common (such as writing a file due to a button click), there 253 | * are no guarantees on the order of the modifications. Without careful work it is possible in rare cases for the newer version of the data to be over-written 254 | * by an older one, leading to obscure data loss and stability issues. Such changes are best executed in serial; to guarantee such work is serialized regardless 255 | * of platform version you can use this function with. 256 | * 257 | * 258 | * This method must be invoked on the UI thread. 259 | * 260 | * @param exec The executor to use. [.THREAD_POOL_EXECUTOR] is available as a convenient process-wide thread 261 | * pool for tasks that are loosely coupled. 262 | * @return This instance of CustomAsyncTask. 263 | * @throws IllegalStateException If [.getStatus] returns either [AsyncTaskEx.Status.RUNNING] or [AsyncTaskEx.Status.FINISHED]. 264 | * @see .execute 265 | */ 266 | fun executeOnExecutor(exec: Executor): AsyncTaskEx { 267 | if (status != Status.PENDING) 268 | when (status) { 269 | Status.RUNNING -> throw IllegalStateException("Cannot execute task:" + " the task is already running.") 270 | Status.FINISHED -> throw IllegalStateException("Cannot execute task:" + " the task has already been executed " + "(a task can be executed only once)") 271 | else -> { 272 | } 273 | } 274 | status = Status.RUNNING 275 | onPreExecute() 276 | exec.execute(future) 277 | return this 278 | } 279 | 280 | @Suppress("UNCHECKED_CAST") 281 | private fun finish(result: Any?) { 282 | if (isCancelled) 283 | onCancelled(result as Result?) 284 | else 285 | onPostExecute(result as Result?) 286 | for (listener in onFinishedListeners) 287 | listener.onFinished() 288 | status = Status.FINISHED 289 | } 290 | 291 | fun addOnFinishedListener(onFinishedListener: OnFinishedListener) { 292 | this.onFinishedListeners.add(onFinishedListener) 293 | } 294 | 295 | fun removeOnFinishedListener(onFinishedListener: OnFinishedListener) { 296 | this.onFinishedListeners.remove(onFinishedListener) 297 | } 298 | 299 | /** 300 | * Indicates the current status of the task. Each status will be set only once during the lifetime of a task. 301 | */ 302 | enum class Status { 303 | /** 304 | * Indicates that the task has not been executed yet. 305 | */ 306 | PENDING, 307 | /** 308 | * Indicates that the task is running. 309 | */ 310 | RUNNING, 311 | /** 312 | * Indicates that [AsyncTaskEx.onPostExecute] has finished. 313 | */ 314 | FINISHED 315 | } 316 | 317 | interface OnFinishedListener { 318 | fun onFinished() 319 | } 320 | 321 | private class InternalHandler(mainLooper: Looper) : Handler(mainLooper) { 322 | override fun handleMessage(msg: Message) { 323 | val result = msg.obj as AsyncTaskExResult<*> 324 | when (msg.what) { 325 | MESSAGE_POST_RESULT -> 326 | // There is only one result 327 | result.task.finish(result.data) 328 | } 329 | } 330 | } 331 | 332 | private abstract class WorkerRunnable : Callable 333 | private class AsyncTaskExResult 334 | internal constructor(internal val task: AsyncTaskEx<*>, val data: Data?) 335 | 336 | companion object { 337 | private const val LOG_TAG = "CustomAsyncTask" 338 | private const val CORE_POOL_SIZE = 2 339 | private const val KEEP_ALIVE = 1 340 | private val sThreadFactory = object : ThreadFactory { 341 | private val count = AtomicInteger(1) 342 | override fun newThread(r: Runnable): Thread { 343 | return Thread(r, "CustomAsyncTask #" + count.getAndIncrement()) 344 | } 345 | } 346 | private val sPoolWorkQueue = LinkedBlockingQueue() 347 | 348 | /** 349 | * An [Executor] that executes tasks one at a time in serial order. This serialization is global to a 350 | * particular process. 351 | */ 352 | // public static final Executor SERIAL_EXECUTOR =new SerialExecutor(); 353 | private const val MESSAGE_POST_RESULT = 0x1 354 | private val sHandler = InternalHandler(Looper.getMainLooper()) 355 | /** 356 | * return the number of cores of the device. 357 | * based on : http://stackoverflow.com/a/10377934/878126 358 | */ 359 | private var coresCount: Int = 0 360 | get() { 361 | Runtime.getRuntime().availableProcessors() 362 | if (field > 0) 363 | return field 364 | class CpuFilter : FileFilter { 365 | override fun accept(pathname: File): Boolean { 366 | return Pattern.matches("cpu[0-9]+", pathname.name) 367 | } 368 | } 369 | try { 370 | val dir = File("/sys/devices/system/cpu/") 371 | val files = dir.listFiles(CpuFilter()) 372 | if (files != null) { 373 | field = files.size 374 | return field 375 | } 376 | } catch (ignored: Exception) { 377 | } 378 | field = max(1, Runtime.getRuntime().availableProcessors()) 379 | return field 380 | } 381 | private val MAXIMUM_POOL_SIZE = max(CORE_POOL_SIZE, coresCount - 1) 382 | /** 383 | * An [Executor] that can be used to execute tasks in parallel. 384 | */ 385 | private val THREAD_POOL_EXECUTOR: Executor = ThreadPoolExecutor(CORE_POOL_SIZE, MAXIMUM_POOL_SIZE, KEEP_ALIVE.toLong(), TimeUnit.SECONDS, sPoolWorkQueue, sThreadFactory) 386 | private val sDefaultExecutor = THREAD_POOL_EXECUTOR 387 | 388 | /** 389 | * Convenience version of [.execute] for use with a simple Runnable object. See [.execute] for more information on the order of execution. 390 | * 391 | * @see .execute 392 | * @see .executeOnExecutor 393 | */ 394 | fun execute(runnable: Runnable) { 395 | sDefaultExecutor.execute(runnable) 396 | } 397 | } 398 | } 399 | --------------------------------------------------------------------------------