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Anko asynchronous tasks
Just a sample using Anko´s asynchronous api instead of AsyncTask.
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‎Anko_asynchronous_tasks/.gitignore‎

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# Built application files
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*.apk
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*.ap_
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# Files for the Dalvik VM
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*.dex
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# Java class files
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*.class
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# Generated files
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bin/
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gen/
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# Gradle files
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.gradle/
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build/
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/*/build/
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# Local configuration file (sdk path, etc)
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local.properties
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# Proguard folder generated by Eclipse
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proguard/
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# Log Files
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*.log

‎Anko_asynchronous_tasks/MyApplication.iml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<module external.linked.project.id="MyApplication" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$" external.system.id="GRADLE" external.system.module.group="" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
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<component name="FacetManager">
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<facet type="java-gradle" name="Java-Gradle">
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<configuration>
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<option name="BUILD_FOLDER_PATH" value="$MODULE_DIR$/build" />
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<option name="BUILDABLE" value="false" />
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</configuration>
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</facet>
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</component>
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<component name="NewModuleRootManager" inherit-compiler-output="true">
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<exclude-output />
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<content url="file://$MODULE_DIR$">
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<excludeFolder url="file://$MODULE_DIR$/.gradle" />
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</content>
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<orderEntry type="inheritedJdk" />
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<orderEntry type="sourceFolder" forTests="false" />
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</component>
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</module>

‎Anko_asynchronous_tasks/app/.gitignore‎

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/build

‎Anko_asynchronous_tasks/app/app.iml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<module external.linked.project.id=":app" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$/.." external.system.id="GRADLE" external.system.module.group="MyApplication" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
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<component name="FacetManager">
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<facet type="android-gradle" name="Android-Gradle">
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<configuration>
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<option name="GRADLE_PROJECT_PATH" value=":app" />
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</configuration>
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</facet>
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<facet type="android" name="Android">
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<configuration>
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<option name="SELECTED_BUILD_VARIANT" value="debug" />
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<option name="SELECTED_TEST_ARTIFACT" value="_android_test_" />
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<option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
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<option name="COMPILE_JAVA_TASK_NAME" value="compileDebugSources" />
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<option name="SOURCE_GEN_TASK_NAME" value="generateDebugSources" />
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<option name="ASSEMBLE_TEST_TASK_NAME" value="assembleDebugAndroidTest" />
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<option name="COMPILE_JAVA_TEST_TASK_NAME" value="compileDebugAndroidTestSources" />
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<option name="TEST_SOURCE_GEN_TASK_NAME" value="generateDebugAndroidTestSources" />
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<option name="ALLOW_USER_CONFIGURATION" value="false" />
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<option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
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<option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
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<option name="RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/src/main/res" />
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<option name="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
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</configuration>
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</facet>
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</component>
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<component name="NewModuleRootManager" inherit-compiler-output="false">
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<output url="file://$MODULE_DIR$/build/intermediates/classes/debug" />
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<output-test url="file://$MODULE_DIR$/build/intermediates/classes/androidTest/debug" />
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<exclude-output />
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<content url="file://$MODULE_DIR$">
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<sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/debug" isTestSource="false" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/debug" isTestSource="false" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/debug" isTestSource="false" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/debug" isTestSource="false" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/debug" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/build/generated/res/generated/debug" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/androidTest/debug" isTestSource="true" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/androidTest/debug" isTestSource="true" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/androidTest/debug" isTestSource="true" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/androidTest/debug" isTestSource="true" generated="true" />
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<sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/androidTest/debug" type="java-test-resource" />
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<sourceFolder url="file://$MODULE_DIR$/build/generated/res/generated/androidTest/debug" type="java-test-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/res" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/resources" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/assets" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/aidl" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/java" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/jni" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/debug/rs" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/res" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/assets" type="java-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/aidl" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/kotlin" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/jni" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/rs" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/res" type="java-test-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/resources" type="java-test-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/assets" type="java-test-resource" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/aidl" isTestSource="true" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/java" isTestSource="true" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/jni" isTestSource="true" />
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<sourceFolder url="file://$MODULE_DIR$/src/androidTest/rs" isTestSource="true" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/assets" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/bundles" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/classes" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/coverage-instrumented-classes" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/dependency-cache" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/dex" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/dex-cache" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/incremental" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/jacoco" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/javaResources" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/libs" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/lint" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/manifests" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/ndk" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/pre-dexed" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/proguard" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/res" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/rs" />
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<excludeFolder url="file://$MODULE_DIR$/build/intermediates/symbols" />
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<excludeFolder url="file://$MODULE_DIR$/build/outputs" />
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<excludeFolder url="file://$MODULE_DIR$/build/tmp" />
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</content>
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<orderEntry type="jdk" jdkName="Android API 22 Platform" jdkType="Android SDK" />
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<orderEntry type="sourceFolder" forTests="false" />
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<orderEntry type="library" exported="" name="gson-2.3.1" level="project" />
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<orderEntry type="library" exported="" name="okio-1.3.0" level="project" />
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<orderEntry type="library" exported="" name="kotlin-runtime-0.11.91.2" level="project" />
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<orderEntry type="library" exported="" name="support-v4-22.1.0" level="project" />
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<orderEntry type="library" exported="" name="support-annotations-22.1.0" level="project" />
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<orderEntry type="library" exported="" name="okhttp-2.3.0" level="project" />
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<orderEntry type="library" exported="" name="anko-0.6-15" level="project" />
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<orderEntry type="library" exported="" name="appcompat-v7-22.1.0" level="project" />
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<orderEntry type="library" exported="" name="kotlin-stdlib-0.11.91.2" level="project" />
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</component>
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</module>

‎Anko_asynchronous_tasks/app/build.gradle‎

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apply plugin: 'com.android.application'
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apply plugin: 'kotlin-android'
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android {
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compileSdkVersion 22
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buildToolsVersion "22.0.1"
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defaultConfig {
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applicationId "com.irontec.kotlintest"
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minSdkVersion 16
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targetSdkVersion 22
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versionCode 1
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versionName "1.0"
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}
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buildTypes {
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release {
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minifyEnabled false
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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}
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}
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sourceSets {
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main.java.srcDirs += 'src/main/kotlin'
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}
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}
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dependencies {
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compile fileTree(dir: 'libs', include: ['*.jar'])
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compile 'com.android.support:appcompat-v7:22.1.0'
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compile 'com.google.code.gson:gson:2.3.1'
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compile 'com.squareup.okhttp:okhttp:2.3.0'
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compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
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compile "org.jetbrains.anko:anko:$anko_version"
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}
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buildscript {
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ext.kotlin_version = '0.11.91.2'
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ext.anko_version = '0.6-15'
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repositories {
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mavenCentral()
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}
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dependencies {
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classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
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}
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}
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repositories {
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mavenCentral()
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}

‎Anko_asynchronous_tasks/app/proguard-rules.pro‎

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# Add project specific ProGuard rules here.
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# By default, the flags in this file are appended to flags specified
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# in /Users/axier/Library/Android/sdk/tools/proguard/proguard-android.txt
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# You can edit the include path and order by changing the proguardFiles
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# directive in build.gradle.
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#
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# For more details, see
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# http://developer.android.com/guide/developing/tools/proguard.html
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# Add any project specific keep options here:
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# If your project uses WebView with JS, uncomment the following
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# and specify the fully qualified class name to the JavaScript interface
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# class:
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#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
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# public *;
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#}

‎Anko_asynchronous_tasks/app/src/main/AndroidManifest.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.irontec.kotlintest" >
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<uses-permission android:name="android.permission.INTERNET"/>
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<application
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android:allowBackup="true"
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android:icon="@mipmap/ic_launcher"
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android:label="@string/app_name"
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android:theme="@style/AppTheme" >
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<activity
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android:name=".MainActivity"
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android:label="@string/app_name" >
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎Anko_asynchronous_tasks/app/src/main/java/com/irontec/kotlintest/MainActivity.kt‎

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package com.irontec.kotlintest
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import android.app.Activity
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import android.os.AsyncTask
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import android.os.Bundle
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import android.support.v7.app.AppCompatActivity
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import android.util.Log
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import android.view.Menu
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import android.view.MenuItem
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import android.widget.TextView
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import com.google.gson.Gson
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import com.google.gson.GsonBuilder
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import com.irontec.kotlintest.deserializers.WeatherDeserializer
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import com.irontec.kotlintest.models.WeatherObject
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import com.irontec.kotlintest.networking.NetworkClient
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import org.json.JSONObject
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import java.io.BufferedInputStream
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import java.io.BufferedReader
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import java.io.InputStreamReader
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import java.net.HttpURLConnection
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import java.net.URL
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import org.jetbrains.anko.*
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public class MainActivity : AppCompatActivity() {
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override fun onCreate(savedInstanceState: Bundle?) {
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super<AppCompatActivity>.onCreate(savedInstanceState)
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verticalLayout {
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padding = dip(5)
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val mTextView = textView {
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textSize = 12f
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}.layoutParams(width = matchParent, height = dip(300))
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button("Retrieve Weather") {
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textSize = 14f
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onClick {
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// Declare a background asynchronous task, no need for an AsyncTask anymore
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async {
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// Heavy duty work made on the background
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val networkClient = NetworkClient()
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val stream = BufferedInputStream(
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networkClient.get("https://raw.githubusercontent.com/irontec/android-kotlin-samples/master/common-data/bilbao.json"))
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val bufferedReader = BufferedReader(InputStreamReader(stream));
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val stringBuilder = StringBuilder();
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bufferedReader.forEachLine { stringBuilder.append(it) }
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val gsonBuilder = GsonBuilder().serializeNulls();
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gsonBuilder.registerTypeAdapter(javaClass<WeatherObject>(), WeatherDeserializer());
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val gson = gsonBuilder.create();
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val weather = gson.fromJson(stringBuilder.toString(), javaClass<WeatherObject>()) as WeatherObject
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uiThread {
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// Just set the TextView text on the UI-Thread
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mTextView.setText(weather.toString())
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}
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}
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}
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}.layoutParams(width = matchParent, height = wrapContent)
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}
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}
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override fun onCreateOptionsMenu(menu: Menu): Boolean {
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getMenuInflater().inflate(R.menu.menu_main, menu)
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return true
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}
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override fun onOptionsItemSelected(item: MenuItem): Boolean {
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val id = item.getItemId()
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if (id == R.id.action_settings) {
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return true
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}
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return super.onOptionsItemSelected(item)
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}
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}

‎Anko_asynchronous_tasks/app/src/main/java/com/irontec/kotlintest/deserializers/WeatherDeserializer.kt‎

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package com.irontec.kotlintest.deserializers
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import com.google.gson.JsonDeserializationContext
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import com.google.gson.JsonDeserializer
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import com.google.gson.JsonElement
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import com.google.gson.JsonObject
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import com.irontec.kotlintest.models.WeatherObject
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import com.irontec.kotlintest.models.WindObject
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import java.lang.reflect.Type
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/**
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* Created by axier on 24/4/15.
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*/
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open class WeatherDeserializer : JsonDeserializer<WeatherObject> {
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override fun deserialize(json: JsonElement?, typeOfT: Type?, context: JsonDeserializationContext?): WeatherObject? {
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val jsonObj = json as JsonObject
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val wheather = WeatherObject()
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val wind = WindObject()
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val jsonWeatherArray = jsonObj.getAsJsonArray("weather").get(0)
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val jsonMainObj = jsonObj.getAsJsonObject("main")
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val jsonWindObj = jsonObj.getAsJsonObject("wind")
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wheather.main = jsonWeatherArray.getAsJsonObject().get("main").getAsString()
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wheather.description = jsonWeatherArray.getAsJsonObject().get("description").getAsString()
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wheather.temp = jsonMainObj.get("temp").getAsFloat()
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wheather.temp_Max = jsonMainObj.get("temp_max").getAsFloat()
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wheather.temp_Min = jsonMainObj.get("temp_min").getAsFloat()
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wheather.humidity = jsonMainObj.get("humidity").getAsInt()
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wind.speed = jsonWindObj.get("speed").getAsFloat()
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wind.deg = jsonWindObj.get("deg").getAsFloat()
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wheather.wind = wind
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return wheather
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}
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}

‎Anko_asynchronous_tasks/app/src/main/java/com/irontec/kotlintest/models/WeatherObject.kt‎

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package com.irontec.kotlintest.models
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/**
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* Created by axier on 24/4/15.
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*/
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public class WeatherObject {
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public var main: String = ""
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public var description: String = ""
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public var temp: Float = 0.0f
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public var temp_Max: Float = 0.0f
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public var temp_Min: Float = 0.0f
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public var humidity: Int = 0
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public var wind: WindObject? = null
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init {
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println(this.toString())
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}
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override fun toString() =
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"Main ${main}, description ${description}, temp ${temp}, temp_Max ${temp_Max}," +
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", temp_Min ${temp_Min}, humidity ${humidity}, wind ${wind.toString()}"
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}

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