google/accompanist#1162 sample project. Click Screen2 in drawer

.gitignore

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+*.iml
+.gradle
+gradle.properties
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+/.idea/misc.xml
+/.idea/modules.xml
+/.idea/gradle.xml
+/.idea/jarRepositories.xml
+/.idea/navEditor.xml
+/.idea/shelf
+/app/schemas/**/**
+.DS_Store
+**/build/**
+/captures
+**/**/*.apk
+/app/production
+/fastlane/report.xml
+/firebase_app_distribution
+/.idea/deploymentTargetDropDown.xml
+/bundletool_temp/bundletool.jar
+/app/jacoco.exec

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+    id 'kotlin-parcelize'
+    id 'com.google.devtools.ksp' version '1.7.0-1.0.6'
+}
+
+android {
+    compileSdk 32
+
+    defaultConfig {
+        applicationId "com.example.sample1162"
+        minSdk 23
+        targetSdk 32
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        vectorDrawables {
+            useSupportLibrary true
+        }
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_11
+        targetCompatibility JavaVersion.VERSION_11
+    }
+    kotlinOptions {
+        jvmTarget = '11'
+        //freeCompilerArgs += "-opt-in=kotlin.RequiresOptIn"
+    }
+    buildFeatures {
+        compose true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion "1.2.0"
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
+    }
+
+    applicationVariants.all { variant ->
+        kotlin.sourceSets {
+            getByName(variant.name) {
+                kotlin.srcDir("build/generated/ksp/${variant.name}/kotlin")
+            }
+        }
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.core:core-ktx:1.7.0'
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation 'com.google.android.material:material:1.6.1'
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
+    implementation 'androidx.activity:activity-compose:1.3.1'
+    implementation "androidx.compose.material:material:$compose_version"
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
+    implementation "io.github.raamcosta.compose-destinations:animations-core:1.6.13-beta"
+    implementation 'com.google.devtools.ksp:symbol-processing-api:1.7.0-1.0.6'
+    ksp 'io.github.raamcosta.compose-destinations:ksp:1.6.13-beta'
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/example/sample1162/ExampleInstrumentedTest.kt

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+package com.example.sample1162
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.example.sample1162", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:tools="http://schemas.android.com/tools"
+  package="com.example.sample1162">
+
+  <application
+    android:allowBackup="true"
+    android:dataExtractionRules="@xml/data_extraction_rules"
+    android:fullBackupContent="@xml/backup_rules"
+    android:icon="@mipmap/ic_launcher"
+    android:label="@string/app_name"
+    android:roundIcon="@mipmap/ic_launcher_round"
+    android:supportsRtl="true"
+    android:theme="@style/Theme.Sample1162"
+    tools:targetApi="31">
+    <activity
+      android:name=".MainActivity"
+      android:exported="true"
+      android:label="@string/app_name"
+      android:theme="@style/Theme.Sample1162">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN" />
+
+        <category android:name="android.intent.category.LAUNCHER" />
+      </intent-filter>
+    </activity>
+  </application>
+
+</manifest>

app/src/main/java/com/example/sample1162/AppScreenViewModel.kt

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+package com.example.sample1162
+
+import android.os.Parcelable
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.stateIn
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import kotlinx.parcelize.Parcelize
+import java.util.*
+
+
+open class OEffect {
+    val id: Long = UUID.randomUUID().mostSignificantBits
+
+    override fun toString(): String {
+        return this.javaClass.name.replaceBeforeLast('$',"").substring(1)
+    }
+}
+
+class AppScreenViewModel : ViewModel() {
+
+    private val _state = MutableStateFlow(State())
+    val state = _state.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), _state.value)
+
+    @Parcelize
+    data class State(
+        val effects: List<Effect> = emptyList(),
+    ) : Parcelable
+
+    @Parcelize
+    sealed class Effect: OEffect(), Parcelable {
+        data class Navigate(val route: String) : Effect()
+    }
+
+    sealed class Event {
+        data class DrawerItemClicked(val route: String) : Event()
+        data class EffectHandled(val effect: Effect) : Event()
+    }
+
+    fun event(event: Event) {
+
+        when (event) {
+            is Event.DrawerItemClicked -> onDrawerItemClicked(event.route)
+            is Event.EffectHandled -> onEffectHandled(event.effect.id)
+        }
+    }
+
+    private fun onEffectHandled(id: Long) {
+        _state.update {
+            val effects = it.effects.filterNot { effect -> effect.id == id }
+            it.copy(effects = effects)
+        }
+    }
+
+    private fun onDrawerItemClicked(route: String) = viewModelScope.launch {
+        _state.update { it.copy(effects = it.effects + Effect.Navigate(route = route)) }
+    }
+}