feat: add example-expo app

example-expo/.gitignore

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+# Learn more https://docs.github.com/en/get-started/getting-started-with-git/ignoring-files
+
+# dependencies
+node_modules/
+
+# Expo
+.expo/
+dist/
+web-build/
+
+# Native
+*.orig.*
+*.jks
+*.p8
+*.p12
+*.key
+*.mobileprovision
+
+# Metro
+.metro-health-check*
+
+# debug
+npm-debug.*
+yarn-debug.*
+yarn-error.*
+
+# macOS
+.DS_Store
+*.pem
+
+# local env files
+.env*.local
+
+# typescript
+*.tsbuildinfo

example-expo/App.js

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+import React from 'react';
+import { StatusBar } from 'expo-status-bar';
+import { StyleSheet, Text, View } from 'react-native';
+
+export default function App() {
+  return (
+    <View style={styles.container}>
+      <Text>Open up App.js to start working on your app!</Text>
+      <StatusBar style="auto" />
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    backgroundColor: '#fff',
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+});

example-expo/android/.gitignore

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+# OSX
+#
+.DS_Store
+
+# Android/IntelliJ
+#
+build/
+.idea
+.gradle
+local.properties
+*.iml
+*.hprof
+.cxx/
+
+# Bundle artifacts
+*.jsbundle

example-expo/android/app/build.gradle

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+apply plugin: "com.android.application"
+apply plugin: "org.jetbrains.kotlin.android"
+apply plugin: "com.facebook.react"
+
+def projectRoot = rootDir.getAbsoluteFile().getParentFile().getAbsolutePath()
+
+static def versionToNumber(major, minor, patch) {
+  return patch * 100 + minor * 10000 + major * 1000000
+}
+
+def getRNVersion() {
+  def version = providers.exec {
+    workingDir(projectDir)
+    commandLine("node", "-e", "console.log(require('react-native/package.json').version);")
+  }.standardOutput.asText.get().trim()
+
+  def coreVersion = version.split("-")[0]
+  def (major, minor, patch) = coreVersion.tokenize('.').collect { it.toInteger() }
+
+  return versionToNumber(
+      major,
+      minor,
+      patch
+  )
+}
+def rnVersion = getRNVersion()
+
+/**
+ * This is the configuration block to customize your React Native Android app.
+ * By default you don't need to apply any configuration, just uncomment the lines you need.
+ */
+react {
+    entryFile = file(["node", "-e", "require('expo/scripts/resolveAppEntry')", projectRoot, "android", "absolute"].execute(null, rootDir).text.trim())
+    reactNativeDir = new File(["node", "--print", "require.resolve('react-native/package.json')"].execute(null, rootDir).text.trim()).getParentFile().getAbsoluteFile()
+    hermesCommand = new File(["node", "--print", "require.resolve('react-native/package.json')"].execute(null, rootDir).text.trim()).getParentFile().getAbsolutePath() + "/sdks/hermesc/%OS-BIN%/hermesc"
+    codegenDir = new File(["node", "--print", "require.resolve('@react-native/codegen/package.json', { paths: [require.resolve('react-native/package.json')] })"].execute(null, rootDir).text.trim()).getParentFile().getAbsoluteFile()
+
+    // Use Expo CLI to bundle the app, this ensures the Metro config
+    // works correctly with Expo projects.
+    cliFile = new File(["node", "--print", "require.resolve('@expo/cli', { paths: [require.resolve('expo/package.json')] })"].execute(null, rootDir).text.trim())
+    bundleCommand = "export:embed"
+
+    /* Folders */
+    //   The root of your project, i.e. where "package.json" lives. Default is '..'
+    // root = file("../")
+    //   The folder where the react-native NPM package is. Default is ../node_modules/react-native
+    // reactNativeDir = file("../node_modules/react-native")
+    //   The folder where the react-native Codegen package is. Default is ../node_modules/@react-native/codegen
+    // codegenDir = file("../node_modules/@react-native/codegen")
+
+    /* Variants */
+    //   The list of variants to that are debuggable. For those we're going to
+    //   skip the bundling of the JS bundle and the assets. By default is just 'debug'.
+    //   If you add flavors like lite, prod, etc. you'll have to list your debuggableVariants.
+    // debuggableVariants = ["liteDebug", "prodDebug"]
+
+    /* Bundling */
+    //   A list containing the node command and its flags. Default is just 'node'.
+    // nodeExecutableAndArgs = ["node"]
+
+    //
+    //   The path to the CLI configuration file. Default is empty.
+    // bundleConfig = file(../rn-cli.config.js)
+    //
+    //   The name of the generated asset file containing your JS bundle
+    // bundleAssetName = "MyApplication.android.bundle"
+    //
+    //   The entry file for bundle generation. Default is 'index.android.js' or 'index.js'
+    // entryFile = file("../js/MyApplication.android.js")
+    //
+    //   A list of extra flags to pass to the 'bundle' commands.
+    //   See https://github.com/react-native-community/cli/blob/main/docs/commands.md#bundle
+    // extraPackagerArgs = []
+
+    /* Hermes Commands */
+    //   The hermes compiler command to run. By default it is 'hermesc'
+    // hermesCommand = "$rootDir/my-custom-hermesc/bin/hermesc"
+    //
+    //   The list of flags to pass to the Hermes compiler. By default is "-O", "-output-source-map"
+    // hermesFlags = ["-O", "-output-source-map"]
+
+    if (rnVersion >= versionToNumber(0, 75, 0)) {
+        /* Autolinking */
+        autolinkLibrariesWithApp()
+    }
+}
+
+/**
+ * Set this to true to Run Proguard on Release builds to minify the Java bytecode.
+ */
+def enableProguardInReleaseBuilds = (findProperty('android.enableProguardInReleaseBuilds') ?: false).toBoolean()
+
+/**
+ * The preferred build flavor of JavaScriptCore (JSC)
+ *
+ * For example, to use the international variant, you can use:
+ * `def jscFlavor = 'org.webkit:android-jsc-intl:+'`
+ *
+ * The international variant includes ICU i18n library and necessary data
+ * allowing to use e.g. `Date.toLocaleString` and `String.localeCompare` that
+ * give correct results when using with locales other than en-US. Note that
+ * this variant is about 6MiB larger per architecture than default.
+ */
+def jscFlavor = 'org.webkit:android-jsc:+'
+
+android {
+    ndkVersion rootProject.ext.ndkVersion
+
+    buildToolsVersion rootProject.ext.buildToolsVersion
+    compileSdk rootProject.ext.compileSdkVersion
+
+    namespace 'pl.jakubgrzywacz.exampleexpo'
+    defaultConfig {
+        applicationId 'pl.jakubgrzywacz.exampleexpo'
+        minSdkVersion rootProject.ext.minSdkVersion
+        targetSdkVersion rootProject.ext.targetSdkVersion
+        versionCode 1
+        versionName "1.0.0"
+    }
+    signingConfigs {
+        debug {
+            storeFile file('debug.keystore')
+            storePassword 'android'
+            keyAlias 'androiddebugkey'
+            keyPassword 'android'
+        }
+    }
+    buildTypes {
+        debug {
+            signingConfig signingConfigs.debug
+        }
+        release {
+            // Caution! In production, you need to generate your own keystore file.
+            // see https://reactnative.dev/docs/signed-apk-android.
+            signingConfig signingConfigs.debug
+            shrinkResources (findProperty('android.enableShrinkResourcesInReleaseBuilds')?.toBoolean() ?: false)
+            minifyEnabled enableProguardInReleaseBuilds
+            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
+            crunchPngs (findProperty('android.enablePngCrunchInReleaseBuilds')?.toBoolean() ?: true)
+        }
+    }
+    packagingOptions {
+        jniLibs {
+            useLegacyPackaging (findProperty('expo.useLegacyPackaging')?.toBoolean() ?: false)
+        }
+    }
+}
+
+// Apply static values from `gradle.properties` to the `android.packagingOptions`
+// Accepts values in comma delimited lists, example:
+// android.packagingOptions.pickFirsts=/LICENSE,**/picasa.ini
+["pickFirsts", "excludes", "merges", "doNotStrip"].each { prop ->
+    // Split option: 'foo,bar' -> ['foo', 'bar']
+    def options = (findProperty("android.packagingOptions.$prop") ?: "").split(",");
+    // Trim all elements in place.
+    for (i in 0..<options.size()) options[i] = options[i].trim();
+    // `[] - ""` is essentially `[""].filter(Boolean)` removing all empty strings.
+    options -= ""
+
+    if (options.length > 0) {
+        println "android.packagingOptions.$prop += $options ($options.length)"
+        // Ex: android.packagingOptions.pickFirsts += '**/SCCS/**'
+        options.each {
+            android.packagingOptions[prop] += it
+        }
+    }
+}
+
+dependencies {
+    // The version of react-native is set by the React Native Gradle Plugin
+    implementation("com.facebook.react:react-android")
+
+    def isGifEnabled = (findProperty('expo.gif.enabled') ?: "") == "true";
+    def isWebpEnabled = (findProperty('expo.webp.enabled') ?: "") == "true";
+    def isWebpAnimatedEnabled = (findProperty('expo.webp.animated') ?: "") == "true";
+
+    if (isGifEnabled) {
+        // For animated gif support
+        implementation("com.facebook.fresco:animated-gif:${reactAndroidLibs.versions.fresco.get()}")
+    }
+
+    if (isWebpEnabled) {
+        // For webp support
+        implementation("com.facebook.fresco:webpsupport:${reactAndroidLibs.versions.fresco.get()}")
+        if (isWebpAnimatedEnabled) {
+            // Animated webp support
+            implementation("com.facebook.fresco:animated-webp:${reactAndroidLibs.versions.fresco.get()}")
+        }
+    }
+
+    if (hermesEnabled.toBoolean()) {
+        implementation("com.facebook.react:hermes-android")
+    } else {
+        implementation jscFlavor
+    }
+}
+
+if (rnVersion < versionToNumber(0, 75, 0)) {
+    apply from: new File(["node", "--print", "require.resolve('@react-native-community/cli-platform-android/package.json', { paths: [require.resolve('react-native/package.json')] })"].execute(null, rootDir).text.trim(), "../native_modules.gradle");
+    applyNativeModulesAppBuildGradle(project)
+}

example-expo/android/app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /usr/local/Cellar/android-sdk/24.3.3/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# react-native-reanimated
+-keep class com.swmansion.reanimated.** { *; }
+-keep class com.facebook.react.turbomodule.** { *; }
+
+# Add any project specific keep options here:

example-expo/android/app/src/debug/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
+
+    <application android:usesCleartextTraffic="true" tools:targetApi="28" tools:ignore="GoogleAppIndexingWarning" tools:replace="android:usesCleartextTraffic" />
+</manifest>

example-expo/android/app/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+  <uses-permission android:name="android.permission.INTERNET"/>
+  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+  <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
+  <uses-permission android:name="android.permission.VIBRATE"/>
+  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+  <queries>
+    <intent>
+      <action android:name="android.intent.action.VIEW"/>
+      <category android:name="android.intent.category.BROWSABLE"/>
+      <data android:scheme="https"/>
+    </intent>
+  </queries>
+  <application android:name=".MainApplication" android:label="@string/app_name" android:icon="@mipmap/ic_launcher" android:roundIcon="@mipmap/ic_launcher_round" android:allowBackup="true" android:theme="@style/AppTheme" android:localeConfig="@xml/locales_config">
+    <meta-data android:name="expo.modules.updates.ENABLED" android:value="false"/>
+    <meta-data android:name="expo.modules.updates.EXPO_UPDATES_CHECK_ON_LAUNCH" android:value="ALWAYS"/>
+    <meta-data android:name="expo.modules.updates.EXPO_UPDATES_LAUNCH_WAIT_MS" android:value="0"/>
+    <activity android:name=".MainActivity" android:configChanges="keyboard|keyboardHidden|orientation|screenSize|screenLayout|uiMode" android:launchMode="singleTask" android:windowSoftInputMode="adjustResize" android:theme="@style/Theme.App.SplashScreen" android:exported="true" android:screenOrientation="portrait">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN"/>
+        <category android:name="android.intent.category.LAUNCHER"/>
+      </intent-filter>
+      <intent-filter>
+        <action android:name="android.intent.action.VIEW"/>
+        <category android:name="android.intent.category.DEFAULT"/>
+        <category android:name="android.intent.category.BROWSABLE"/>
+        <data android:scheme="pl.jakubgrzywacz.exampleexpo"/>
+      </intent-filter>
+    </activity>
+    <activity android:name="com.facebook.react.devsupport.DevSettingsActivity" android:exported="false"/>
+  </application>
+</manifest>

example-expo/android/app/src/main/java/pl/jakubgrzywacz/exampleexpo/MainActivity.kt

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+package pl.jakubgrzywacz.exampleexpo
+
+import android.os.Build
+import android.os.Bundle
+
+import com.facebook.react.ReactActivity
+import com.facebook.react.ReactActivityDelegate
+import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint.fabricEnabled
+import com.facebook.react.defaults.DefaultReactActivityDelegate
+
+import expo.modules.ReactActivityDelegateWrapper
+
+class MainActivity : ReactActivity() {
+  override fun onCreate(savedInstanceState: Bundle?) {
+    // Set the theme to AppTheme BEFORE onCreate to support
+    // coloring the background, status bar, and navigation bar.
+    // This is required for expo-splash-screen.
+    setTheme(R.style.AppTheme);
+    super.onCreate(null)
+  }
+
+  /**
+   * Returns the name of the main component registered from JavaScript. This is used to schedule
+   * rendering of the component.
+   */
+  override fun getMainComponentName(): String = "main"
+
+  /**
+   * Returns the instance of the [ReactActivityDelegate]. We use [DefaultReactActivityDelegate]
+   * which allows you to enable New Architecture with a single boolean flags [fabricEnabled]
+   */
+  override fun createReactActivityDelegate(): ReactActivityDelegate {
+    return ReactActivityDelegateWrapper(
+          this,
+          BuildConfig.IS_NEW_ARCHITECTURE_ENABLED,
+          object : DefaultReactActivityDelegate(
+              this,
+              mainComponentName,
+              fabricEnabled
+          ){})
+  }
+
+  /**
+    * Align the back button behavior with Android S
+    * where moving root activities to background instead of finishing activities.
+    * @see <a href="https://developer.android.com/reference/android/app/Activity#onBackPressed()">onBackPressed</a>
+    */
+  override fun invokeDefaultOnBackPressed() {
+      if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.R) {
+          if (!moveTaskToBack(false)) {
+              // For non-root activities, use the default implementation to finish them.
+              super.invokeDefaultOnBackPressed()
+          }
+          return
+      }
+
+      // Use the default back button implementation on Android S
+      // because it's doing more than [Activity.moveTaskToBack] in fact.
+      super.invokeDefaultOnBackPressed()
+  }
+}