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ampty app with kotlin and c++ support
1 parent a008511 commit 844a17d

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.gitignore

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*.iml
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.gradle
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/local.properties
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/.idea/workspace.xml
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/.idea/libraries
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.DS_Store
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/build
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/captures
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.externalNativeBuild

app/.gitignore

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/build

app/CMakeLists.txt

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# For more information about using CMake with Android Studio, read the
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# documentation: https://d.android.com/studio/projects/add-native-code.html
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# Sets the minimum version of CMake required to build the native library.
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cmake_minimum_required(VERSION 3.4.1)
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# Creates and names a library, sets it as either STATIC
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# or SHARED, and provides the relative paths to its source code.
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# You can define multiple libraries, and CMake builds them for you.
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# Gradle automatically packages shared libraries with your APK.
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add_library( # Sets the name of the library.
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native-lib
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# Sets the library as a shared library.
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SHARED
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# Provides a relative path to your source file(s).
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src/main/cpp/native-lib.cpp )
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# Searches for a specified prebuilt library and stores the path as a
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# variable. Because CMake includes system libraries in the search path by
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# default, you only need to specify the name of the public NDK library
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# you want to add. CMake verifies that the library exists before
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# completing its build.
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find_library( # Sets the name of the path variable.
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log-lib
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# Specifies the name of the NDK library that
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# you want CMake to locate.
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log )
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# Specifies libraries CMake should link to your target library. You
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# can link multiple libraries, such as libraries you define in this
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# build script, prebuilt third-party libraries, or system libraries.
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target_link_libraries( # Specifies the target library.
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native-lib
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# Links the target library to the log library
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# included in the NDK.
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${log-lib} )

app/build.gradle

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apply plugin: 'com.android.application'
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apply plugin: 'kotlin-android'
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apply plugin: 'kotlin-android-extensions'
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android {
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compileSdkVersion 26
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defaultConfig {
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applicationId "com.jbloit.androidlinkaudio"
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minSdkVersion 19
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targetSdkVersion 26
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versionCode 1
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versionName "1.0"
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testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
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externalNativeBuild {
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cmake {
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cppFlags "-fexceptions"
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}
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}
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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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externalNativeBuild {
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cmake {
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path "CMakeLists.txt"
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}
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}
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}
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dependencies {
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implementation fileTree(dir: 'libs', include: ['*.jar'])
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implementation"org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
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implementation 'com.android.support:appcompat-v7:26.1.0'
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implementation 'com.android.support.constraint:constraint-layout:1.1.0'
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testImplementation 'junit:junit:4.12'
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androidTestImplementation 'com.android.support.test:runner:1.0.2'
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androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
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}

app/proguard-rules.pro

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# Add project specific ProGuard rules here.
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# You can control the set of applied configuration files using the
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# proguardFiles setting 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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# 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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#}
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# Uncomment this to preserve the line number information for
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# debugging stack traces.
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#-keepattributes SourceFile,LineNumberTable
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# If you keep the line number information, uncomment this to
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# hide the original source file name.
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#-renamesourcefileattribute SourceFile
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package com.jbloit.androidlinkaudio
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import android.support.test.InstrumentationRegistry
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import android.support.test.runner.AndroidJUnit4
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import org.junit.Test
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import org.junit.runner.RunWith
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import org.junit.Assert.*
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/**
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* Instrumented test, which will execute on an Android device.
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*
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* See [testing documentation](http://d.android.com/tools/testing).
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*/
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@RunWith(AndroidJUnit4::class)
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class ExampleInstrumentedTest {
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@Test
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fun useAppContext() {
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// Context of the app under test.
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val appContext = InstrumentationRegistry.getTargetContext()
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assertEquals("com.jbloit.androidlinkaudio", appContext.packageName)
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}
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}

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.jbloit.androidlinkaudio">
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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:roundIcon="@mipmap/ic_launcher_round"
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android:supportsRtl="true"
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android:theme="@style/AppTheme">
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<activity android:name=".MainActivity">
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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>

app/src/main/cpp/native-lib.cpp

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#include <jni.h>
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#include <string>
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extern "C"
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JNIEXPORT jstring
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JNICALL
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Java_com_jbloit_androidlinkaudio_MainActivity_stringFromJNI(
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JNIEnv *env,
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jobject /* this */) {
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std::string hello = "Hello from C++";
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return env->NewStringUTF(hello.c_str());
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}
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package com.jbloit.androidlinkaudio
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import android.support.v7.app.AppCompatActivity
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import android.os.Bundle
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import kotlinx.android.synthetic.main.activity_main.*
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class MainActivity : AppCompatActivity() {
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_main)
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// Example of a call to a native method
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sample_text.text = stringFromJNI()
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}
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/**
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* A native method that is implemented by the 'native-lib' native library,
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* which is packaged with this application.
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*/
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external fun stringFromJNI(): String
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companion object {
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// Used to load the 'native-lib' library on application startup.
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init {
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System.loadLibrary("native-lib")
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}
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}
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}
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<vector xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:aapt="http://schemas.android.com/aapt"
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android:width="108dp"
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android:height="108dp"
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android:viewportHeight="108"
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android:viewportWidth="108">
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<path
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android:fillType="evenOdd"
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android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
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android:strokeColor="#00000000"
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android:strokeWidth="1">
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<aapt:attr name="android:fillColor">
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<gradient
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android:endX="78.5885"
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android:endY="90.9159"
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android:startX="48.7653"
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android:startY="61.0927"
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android:type="linear">
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<item
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android:color="#44000000"
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android:offset="0.0" />
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<item
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android:color="#00000000"
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android:offset="1.0" />
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</gradient>
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</aapt:attr>
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</path>
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<path
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android:fillColor="#FFFFFF"
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android:fillType="nonZero"
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android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
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android:strokeColor="#00000000"
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android:strokeWidth="1" />
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</vector>

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