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‎.gitignore

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.idea
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*.iml
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.gradle
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/local.properties
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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

‎app/.gitignore

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/build

‎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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}
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android {
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namespace 'com.breens.searchableexposeddropdownmenujetpackcompose'
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compileSdk 32
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defaultConfig {
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applicationId "com.breens.searchableexposeddropdownmenujetpackcompose"
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minSdk 21
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targetSdk 32
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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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vectorDrawables {
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useSupportLibrary true
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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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compose true
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}
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composeOptions {
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kotlinCompilerExtensionVersion '1.1.1'
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}
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packagingOptions {
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resources {
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excludes += '/META-INF/{AL2.0,LGPL2.1}'
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}
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}
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}
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dependencies {
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implementation 'androidx.core:core-ktx:1.7.0'
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implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
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implementation 'androidx.activity:activity-compose:1.3.1'
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implementation "androidx.compose.ui:ui:$compose_ui_version"
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implementation "androidx.compose.ui:ui-tooling-preview:$compose_ui_version"
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implementation 'androidx.compose.material:material:1.1.1'
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testImplementation 'junit:junit:4.13.2'
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androidTestImplementation 'androidx.test.ext:junit:1.1.3'
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androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
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androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_ui_version"
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debugImplementation "androidx.compose.ui:ui-tooling:$compose_ui_version"
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debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_ui_version"
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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

‎app/src/androidTest/java/com/breens/searchableexposeddropdownmenujetpackcompose/ExampleInstrumentedTest.kt

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package com.breens.searchableexposeddropdownmenujetpackcompose
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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(
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"com.breens.searchableexposeddropdownmenujetpackcompose",
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appContext.packageName
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)
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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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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.SearchableExposedDropDownMenuJetpackCompose"
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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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android:theme="@style/Theme.SearchableExposedDropDownMenuJetpackCompose">
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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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<meta-data
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android:name="android.app.lib_name"
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android:value="" />
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</activity>
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</application>
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</manifest>

‎app/src/main/java/com/breens/searchableexposeddropdownmenujetpackcompose/MainActivity.kt

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package com.breens.searchableexposeddropdownmenujetpackcompose
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import android.os.Bundle
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import androidx.activity.ComponentActivity
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import androidx.activity.compose.setContent
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import androidx.compose.foundation.layout.Arrangement
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import androidx.compose.foundation.layout.Box
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import androidx.compose.foundation.layout.Column
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import androidx.compose.foundation.layout.fillMaxSize
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import androidx.compose.foundation.layout.fillMaxWidth
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import androidx.compose.foundation.layout.width
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import androidx.compose.material.Card
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import androidx.compose.material.DropdownMenuItem
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import androidx.compose.material.Icon
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import androidx.compose.material.IconToggleButton
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import androidx.compose.material.OutlinedTextField
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import androidx.compose.material.Text
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import androidx.compose.material.icons.Icons
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import androidx.compose.material.icons.outlined.KeyboardArrowDown
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import androidx.compose.material.icons.outlined.KeyboardArrowUp
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.getValue
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import androidx.compose.runtime.mutableStateOf
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import androidx.compose.runtime.remember
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import androidx.compose.runtime.saveable.rememberSaveable
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import androidx.compose.runtime.setValue
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import androidx.compose.ui.Alignment
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.tooling.preview.Preview
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import androidx.compose.ui.unit.dp
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import com.breens.searchableexposeddropdownmenujetpackcompose.ui.theme.SearchableExposedDropDownMenuJetpackComposeTheme
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class MainActivity : ComponentActivity() {
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContent {
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SearchableExposedDropDownMenuJetpackComposeTheme {
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Box(Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
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SearchableExpandedDropDownMenu()
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}
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}
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}
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}
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}
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@Composable
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@Preview(showSystemUi = true)
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fun SearchableExpandedDropDownMenu() {
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var selectedOptionText by rememberSaveable { mutableStateOf("") }
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var searchedOption by rememberSaveable { mutableStateOf("") }
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var expanded by remember { mutableStateOf(false) }
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val sports =
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mutableListOf("Basketball", "Rugby", "Football", "MMA", "Motorsport", "Snooker", "Tennis")
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var filteredSports = mutableListOf<String>()
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Column(Modifier.fillMaxWidth(), horizontalAlignment = Alignment.CenterHorizontally) {
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OutlinedTextField(
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value = selectedOptionText,
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onValueChange = { selectedOptionText = it },
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label = { Text(text = "Select Option") },
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trailingIcon = {
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IconToggleButton(checked = expanded, onCheckedChange = { expanded = it }) {
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if (expanded) Icon(
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imageVector = Icons.Outlined.KeyboardArrowUp,
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contentDescription = null
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) else Icon(
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imageVector = Icons.Outlined.KeyboardArrowDown,
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contentDescription = null
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)
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}
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}
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)
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if (expanded) {
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Card(modifier = Modifier.width(280.dp)) {
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Column(verticalArrangement = Arrangement.spacedBy(8.dp)) {
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OutlinedTextField(
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value = searchedOption,
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onValueChange = { selectedSport ->
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searchedOption = selectedSport
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filteredSports = sports.filter { it.contains(searchedOption, ignoreCase = true) } as MutableList<String>
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}
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)
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if (filteredSports.isNotEmpty()) {
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Column(verticalArrangement = Arrangement.spacedBy(8.dp)) {
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filteredSports.forEach { selectionOption ->
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DropdownMenuItem(
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onClick = {
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selectedOptionText = selectionOption
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expanded = false
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}
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) {
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Text(text = selectionOption)
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}
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}
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}
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} else {
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Column(verticalArrangement = Arrangement.spacedBy(8.dp)) {
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sports.forEach { selectionOption ->
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DropdownMenuItem(
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onClick = {
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selectedOptionText = selectionOption
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expanded = false
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}
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) {
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Text(text = selectionOption)
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}
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}
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}
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}
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}
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}
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}
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}
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}

‎app/src/main/java/com/breens/searchableexposeddropdownmenujetpackcompose/ui/theme/Color.kt

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package com.breens.searchableexposeddropdownmenujetpackcompose.ui.theme
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import androidx.compose.ui.graphics.Color
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val Purple200 = Color(0xFFBB86FC)
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val Purple500 = Color(0xFF6200EE)
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val Purple700 = Color(0xFF3700B3)
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val Teal200 = Color(0xFF03DAC5)

‎app/src/main/java/com/breens/searchableexposeddropdownmenujetpackcompose/ui/theme/Shape.kt

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package com.breens.searchableexposeddropdownmenujetpackcompose.ui.theme
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import androidx.compose.foundation.shape.RoundedCornerShape
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import androidx.compose.material.Shapes
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import androidx.compose.ui.unit.dp
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val Shapes = Shapes(
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small = RoundedCornerShape(4.dp),
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medium = RoundedCornerShape(4.dp),
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large = RoundedCornerShape(0.dp)
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)

‎app/src/main/java/com/breens/searchableexposeddropdownmenujetpackcompose/ui/theme/Theme.kt

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package com.breens.searchableexposeddropdownmenujetpackcompose.ui.theme
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import androidx.compose.foundation.isSystemInDarkTheme
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import androidx.compose.material.MaterialTheme
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import androidx.compose.material.darkColors
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import androidx.compose.material.lightColors
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import androidx.compose.runtime.Composable
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private val DarkColorPalette = darkColors(
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primary = Purple200,
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primaryVariant = Purple700,
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secondary = Teal200
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)
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private val LightColorPalette = lightColors(
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primary = Purple500,
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primaryVariant = Purple700,
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secondary = Teal200
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/* Other default colors to override
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background = Color.White,
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surface = Color.White,
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onPrimary = Color.White,
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onSecondary = Color.Black,
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onBackground = Color.Black,
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onSurface = Color.Black,
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*/
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)
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@Composable
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fun SearchableExposedDropDownMenuJetpackComposeTheme(
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darkTheme: Boolean = isSystemInDarkTheme(),
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content: @Composable () -> Unit
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) {
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val colors = if (darkTheme) {
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DarkColorPalette
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} else {
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LightColorPalette
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}
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MaterialTheme(
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colors = colors,
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typography = Typography,
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shapes = Shapes,
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content = content
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)
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}

‎app/src/main/java/com/breens/searchableexposeddropdownmenujetpackcompose/ui/theme/Type.kt

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package com.breens.searchableexposeddropdownmenujetpackcompose.ui.theme
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import androidx.compose.material.Typography
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import androidx.compose.ui.text.TextStyle
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import androidx.compose.ui.text.font.FontFamily
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import androidx.compose.ui.text.font.FontWeight
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import androidx.compose.ui.unit.sp
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// Set of Material typography styles to start with
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val Typography = Typography(
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body1 = TextStyle(
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fontFamily = FontFamily.Default,
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fontWeight = FontWeight.Normal,
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fontSize = 16.sp
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)
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/* Other default text styles to override
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button = TextStyle(
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fontFamily = FontFamily.Default,
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fontWeight = FontWeight.W500,
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fontSize = 14.sp
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),
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caption = TextStyle(
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fontFamily = FontFamily.Default,
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fontWeight = FontWeight.Normal,
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fontSize = 12.sp
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)
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*/
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)

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