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Add Android without Jetpack Compose
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‎apps/android_pythonnative_2/.gitignore‎

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*.iml
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.gradle
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/local.properties
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/.idea/caches
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/.idea/libraries
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/.idea/modules.xml
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/.idea/workspace.xml
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/.idea/navEditor.xml
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/.idea/assetWizardSettings.xml
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.DS_Store
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/build
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/captures
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.externalNativeBuild
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.cxx
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local.properties

‎apps/android_pythonnative_2/app/.gitignore‎

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/build

‎apps/android_pythonnative_2/app/build.gradle‎

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plugins {
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id 'com.android.application'
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id 'org.jetbrains.kotlin.android'
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id 'com.chaquo.python'
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}
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android {
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namespace 'com.pythonnative.pythonnative'
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compileSdk 33
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defaultConfig {
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applicationId "com.pythonnative.pythonnative"
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minSdk 24
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targetSdk 33
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versionCode 1
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versionName "1.0"
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testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
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ndk {
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abiFilters "armeabi-v7a", "arm64-v8a", "x86", "x86_64"
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}
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python {
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pip {
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install "matplotlib"
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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-optimize.txt'), 'proguard-rules.pro'
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}
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}
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compileOptions {
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sourceCompatibility JavaVersion.VERSION_1_8
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targetCompatibility JavaVersion.VERSION_1_8
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}
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kotlinOptions {
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jvmTarget = '1.8'
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}
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buildFeatures {
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viewBinding true
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}
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}
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dependencies {
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implementation 'androidx.core:core-ktx:1.8.0'
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implementation 'androidx.appcompat:appcompat:1.4.1'
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implementation 'com.google.android.material:material:1.5.0'
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implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
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implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.6.1'
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implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.1'
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implementation 'androidx.navigation:navigation-fragment-ktx:2.5.2'
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implementation 'androidx.navigation:navigation-ui-ktx:2.5.2'
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testImplementation 'junit:junit:4.13.2'
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androidTestImplementation 'androidx.test.ext:junit:1.1.5'
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androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
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}

‎apps/android_pythonnative_2/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

‎apps/android_pythonnative_2/app/src/androidTest/java/com/pythonnative/pythonnative/ExampleInstrumentedTest.kt‎

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package com.pythonnative.pythonnative
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import androidx.test.platform.app.InstrumentationRegistry
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import androidx.test.ext.junit.runners.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.getInstrumentation().targetContext
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assertEquals("com.pythonnative.pythonnative", appContext.packageName)
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}
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}

‎apps/android_pythonnative_2/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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xmlns:tools="http://schemas.android.com/tools">
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<application
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android:allowBackup="true"
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android:dataExtractionRules="@xml/data_extraction_rules"
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android:fullBackupContent="@xml/backup_rules"
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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/Theme.Pythonnative"
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tools:targetApi="31">
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<activity
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android:name=".MainActivity"
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android:exported="true"
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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>

‎apps/android_pythonnative_2/app/src/main/java/com/pythonnative/pythonnative/MainActivity.kt‎

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package com.pythonnative.pythonnative
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import android.os.Bundle
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import com.google.android.material.bottomnavigation.BottomNavigationView
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import androidx.appcompat.app.AppCompatActivity
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import androidx.navigation.findNavController
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import androidx.navigation.ui.AppBarConfiguration
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import androidx.navigation.ui.setupActionBarWithNavController
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import androidx.navigation.ui.setupWithNavController
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import com.pythonnative.pythonnative.databinding.ActivityMainBinding
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class MainActivity : AppCompatActivity() {
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private lateinit var binding: ActivityMainBinding
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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binding = ActivityMainBinding.inflate(layoutInflater)
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setContentView(binding.root)
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val navView: BottomNavigationView = binding.navView
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val navController = findNavController(R.id.nav_host_fragment_activity_main)
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// Passing each menu ID as a set of Ids because each
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// menu should be considered as top level destinations.
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val appBarConfiguration = AppBarConfiguration(
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setOf(
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R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications
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)
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)
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setupActionBarWithNavController(navController, appBarConfiguration)
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navView.setupWithNavController(navController)
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}
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}

‎apps/android_pythonnative_2/app/src/main/java/com/pythonnative/pythonnative/ui/dashboard/DashboardFragment.kt‎

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package com.pythonnative.pythonnative.ui.dashboard
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import android.os.Bundle
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import android.view.LayoutInflater
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import android.view.View
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import android.view.ViewGroup
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import android.widget.TextView
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import androidx.fragment.app.Fragment
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import androidx.lifecycle.ViewModelProvider
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import com.pythonnative.pythonnative.databinding.FragmentDashboardBinding
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class DashboardFragment : Fragment() {
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private var _binding: FragmentDashboardBinding? = null
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// This property is only valid between onCreateView and
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// onDestroyView.
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private val binding get() = _binding!!
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override fun onCreateView(
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inflater: LayoutInflater,
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container: ViewGroup?,
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savedInstanceState: Bundle?
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): View {
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val dashboardViewModel =
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ViewModelProvider(this).get(DashboardViewModel::class.java)
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_binding = FragmentDashboardBinding.inflate(inflater, container, false)
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val root: View = binding.root
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val textView: TextView = binding.textDashboard
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dashboardViewModel.text.observe(viewLifecycleOwner) {
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textView.text = it
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}
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return root
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}
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override fun onDestroyView() {
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super.onDestroyView()
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_binding = null
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}
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}

‎apps/android_pythonnative_2/app/src/main/java/com/pythonnative/pythonnative/ui/dashboard/DashboardViewModel.kt‎

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package com.pythonnative.pythonnative.ui.dashboard
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import androidx.lifecycle.LiveData
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import androidx.lifecycle.MutableLiveData
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import androidx.lifecycle.ViewModel
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class DashboardViewModel : ViewModel() {
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private val _text = MutableLiveData<String>().apply {
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value = "This is dashboard Fragment"
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}
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val text: LiveData<String> = _text
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}

‎apps/android_pythonnative_2/app/src/main/java/com/pythonnative/pythonnative/ui/home/HomeFragment.kt‎

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package com.pythonnative.pythonnative.ui.home
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import android.graphics.BitmapFactory
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import android.os.Bundle
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import android.view.LayoutInflater
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import android.view.View
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import android.view.ViewGroup
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import android.widget.TextView
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import androidx.fragment.app.Fragment
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import androidx.lifecycle.ViewModelProvider
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import androidx.lifecycle.lifecycleScope
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import com.pythonnative.pythonnative.databinding.FragmentHomeBinding
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import com.chaquo.python.PyException
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import com.chaquo.python.Python
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import com.chaquo.python.android.AndroidPlatform
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.launch
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import kotlinx.coroutines.withContext
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class HomeFragment : Fragment() {
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private var _binding: FragmentHomeBinding? = null
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// This property is only valid between onCreateView and
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// onDestroyView.
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private val binding get() = _binding!!
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override fun onCreateView(
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inflater: LayoutInflater,
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container: ViewGroup?,
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savedInstanceState: Bundle?
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): View {
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_binding = FragmentHomeBinding.inflate(inflater, container, false)
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// Initialize Chaquopy
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if (!Python.isStarted()) {
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Python.start(AndroidPlatform(requireContext()))
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}
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val py = Python.getInstance()
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val plotModule = py.getModule("plot")
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// Variables to keep the user's input
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val xInput = "1 2 3 4 5"
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val yInput = "1 4 9 16 25"
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lifecycleScope.launch {
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try {
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val bytes = plotModule.callAttr(
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"plot",
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xInput,
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yInput
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).toJava(ByteArray::class.java)
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withContext(Dispatchers.IO) {
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val bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.size)
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binding.imageHome.setImageBitmap(bitmap)
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}
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} catch (e: PyException) {
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binding.textHome.text = e.message
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}
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}
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return binding.root
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}
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override fun onDestroyView() {
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super.onDestroyView()
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_binding = null
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}
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}

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