add kotlin example

Author: dratwas

example/kotlin/.gitignore

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

example/kotlin/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>kotlin</name>
+	<comment>Project kotlin created by Buildship.</comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
+	</natures>
+</projectDescription>

example/kotlin/.settings/org.eclipse.buildship.core.prefs

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+connection.project.dir=
+eclipse.preferences.version=1

example/kotlin/app/.gitignore

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+/build

example/kotlin/app/build.gradle

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+apply plugin: 'com.android.application'
+
+apply plugin: 'kotlin-android'
+
+apply plugin: 'kotlin-android-extensions'
+
+project.ext.react = [
+        entryFile: "example/index.js"
+]
+
+apply from: "../../../node_modules/react-native/react.gradle"
+
+android {
+    compileSdkVersion rootProject.ext.compileSdkVersion
+
+    sourceSets {
+        main.java.srcDirs += 'build/generated/rncli/src/main/java'
+    }
+
+    defaultConfig {
+        applicationId "com.callstack.kotlinexample"
+        minSdkVersion rootProject.ext.minSdkVersion
+        targetSdkVersion rootProject.ext.targetSdkVersion
+        versionCode 1
+        versionName "1.0"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation "com.facebook.react:react-native:+"
+    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlinVersion"
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation 'androidx.appcompat:appcompat:1.1.0-beta01'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta2'
+    implementation 'org.webkit:android-jsc:+'
+}
+
+apply from: file("../../../node_modules/@react-native-community/cli-platform-android/native_modules.gradle");
+applyNativeModulesAppBuildGradle(project, "../..")

example/kotlin/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

example/kotlin/app/src/androidTest/java/com/callstack/kotlinexample/ExampleInstrumentedTest.kt

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+package com.callstack.kotlinexample
+
+import android.support.test.InstrumentationRegistry
+import android.support.test.runner.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.getTargetContext()
+        assertEquals("com.callstack.kotlinexample", appContext.packageName)
+    }
+}

example/kotlin/app/src/debug/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">
+    <application android:usesCleartextTraffic="true" tools:targetApi="28" />
+</manifest>

example/kotlin/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"
+          package="com.callstack.kotlinexample">
+
+
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
+
+    <application
+            android:name=".MainApplication"
+            android:allowBackup="true"
+            android:icon="@mipmap/ic_launcher"
+            android:label="@string/app_name"
+            android:roundIcon="@mipmap/ic_launcher_round"
+            android:supportsRtl="true"
+            android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+        <activity android:name=".ReactNativeFragmentActivity"/>
+        <activity android:name="com.facebook.react.devsupport.DevSettingsActivity"/>
+        <activity android:name="com.callstack.reactnativebrownfield.ReactNativeActivity"/>
+    </application>
+
+</manifest>

example/kotlin/app/src/main/java/com/callstack/kotlinexample/MainActivity.kt

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+package com.callstack.kotlinexample
+
+import android.content.Intent
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import com.callstack.reactnativebrownfield.ReactNativeActivity
+import android.view.View
+
+
+class MainActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        supportActionBar!!.hide()
+    }
+
+    fun startReactNative(view: View) {
+        val intent = ReactNativeActivity.createReactActivityIntent(
+            this,
+            "ReactNative"
+        )
+        startActivity(intent)
+    }
+
+    fun startReactNativeFragment(view: View) {
+        val intent = Intent(this, ReactNativeFragmentActivity::class.java)
+        startActivity(intent)
+    }
+}