Convert firestore quickstart to Kotlin

firestore/app/build.gradle

@@ -1,4 +1,7 @@
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+apply plugin: 'org.jetbrains.kotlin.android.extensions'
 
 android {
     testBuildType "release"
@@ -30,7 +33,14 @@ android {
     }
 }
 
+androidExtensions {
+    experimental = true
+}
+
 dependencies {
+    implementation project(':internal')
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.2.50"
+
     // Firestore
     implementation 'com.google.firebase:firebase-core:16.0.3'
     implementation 'com.google.firebase:firebase-firestore:17.1.0'

firestore/app/src/androidTest/java/com/google/firebase/example/fireeats/MainActivityTest.java

@@ -5,11 +5,14 @@
 import android.support.test.runner.AndroidJUnit4;
 import android.support.test.uiautomator.UiDevice;
 import android.support.test.uiautomator.UiObject;
-import android.support.test.uiautomator.UiSelector;
 import android.support.test.uiautomator.UiScrollable;
+import android.support.test.uiautomator.UiSelector;
 import android.test.suitebuilder.annotation.LargeTest;
 import android.view.accessibility.AccessibilityWindowInfo;
+
 import com.google.firebase.auth.FirebaseAuth;
+import com.google.firebase.example.fireeats.java.MainActivity;
+
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Rule;
@@ -55,7 +58,7 @@
         .clickAndWaitForNewWindow(TIMEOUT);
 
     // Click add review
-    getById("fab_show_rating_dialog").click();
+    getById("fabShowRatingDialog").click();
 
     //Write a review
     getById("restaurant_form_text").setText("\uD83D\uDE0E\uD83D\uDE00");
@@ -65,11 +68,11 @@
     getById("restaurant_form_button").clickAndWaitForNewWindow(TIMEOUT);
 
     // Assert that the review exists
-    UiScrollable ratingsList = new UiScrollable(getIdSelector("recycler_ratings"));
+    UiScrollable ratingsList = new UiScrollable(getIdSelector("recyclerRatings"));
     ratingsList.waitForExists(TIMEOUT);
     ratingsList.scrollToBeginning(100);
     Assert.assertTrue(
-        getById("recycler_ratings")
+        getById("recyclerRatings")
             .getChild(new UiSelector().text("\uD83D\uDE0E\uD83D\uDE00"))
             .waitForExists(TIMEOUT));
   }

firestore/app/src/main/AndroidManifest.xml

@@ -8,9 +8,11 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
         android:name="android.support.multidex.MultiDexApplication">
-        <activity
-            android:name=".MainActivity"
-            android:theme="@style/AppTheme.Activity">
+
+        <activity android:name=".EntryChoiceActivity"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme.EntryChoice">
+
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
@@ -19,7 +21,23 @@
         </activity>
 
         <activity
-            android:name=".RestaurantDetailActivity"
+            android:name=".java.MainActivity"
+            android:theme="@style/AppTheme.Activity">
+
+        </activity>
+
+        <activity
+            android:name=".java.RestaurantDetailActivity"
+            android:theme="@style/AppTheme.Activity" />
+
+        <activity
+            android:name=".kotlin.MainActivity"
+            android:theme="@style/AppTheme.Activity">
+
+        </activity>
+
+        <activity
+            android:name=".kotlin.RestaurantDetailActivity"
             android:theme="@style/AppTheme.Activity" />
     </application>
 

firestore/app/src/main/java/com/google/firebase/example/fireeats/EntryChoiceActivity.kt

@@ -0,0 +1,22 @@
+package com.google.firebase.example.fireeats
+
+import android.content.Intent
+import com.firebase.example.internal.BaseEntryChoiceActivity
+import com.firebase.example.internal.Choice
+
+class EntryChoiceActivity : BaseEntryChoiceActivity() {
+
+    override fun getChoices(): List<Choice> {
+        return listOf(
+                Choice(
+                        "Java",
+                        "Run the Cloud Firestore quickstart written in Java.",
+                        Intent(this, com.google.firebase.example.fireeats.java.MainActivity::class.java)),
+                Choice(
+                        "Kotlin",
+                        "Run the Cloud Firestore quickstart written in Kotlin.",
+                        Intent(this, com.google.firebase.example.fireeats.kotlin.MainActivity::class.java))
+        )
+    }
+
+}

firestore/app/src/main/java/com/google/firebase/example/fireeats/FilterDialogFragment.java → firestore/app/src/main/java/com/google/firebase/example/fireeats/java/FilterDialogFragment.java

@@ -1,4 +1,4 @@
-package com.google.firebase.example.fireeats;
+package com.google.firebase.example.fireeats.java;
 
 import android.content.Context;
 import android.os.Bundle;
@@ -9,7 +9,8 @@
 import android.view.ViewGroup;
 import android.widget.Spinner;
 
-import com.google.firebase.example.fireeats.model.Restaurant;
+import com.google.firebase.example.fireeats.R;
+import com.google.firebase.example.fireeats.java.model.Restaurant;
 import com.google.firebase.firestore.Query;
 
 import butterknife.BindView;
@@ -31,16 +32,16 @@ interface FilterListener {
 
     private View mRootView;
 
-    @BindView(R.id.spinner_category)
+    @BindView(R.id.spinnerCategory)
     Spinner mCategorySpinner;
 
-    @BindView(R.id.spinner_city)
+    @BindView(R.id.spinnerCity)
     Spinner mCitySpinner;
 
-    @BindView(R.id.spinner_sort)
+    @BindView(R.id.spinnerSort)
     Spinner mSortSpinner;
 
-    @BindView(R.id.spinner_price)
+    @BindView(R.id.spinnerPrice)
     Spinner mPriceSpinner;
 
     private FilterListener mFilterListener;
@@ -73,7 +74,7 @@ public void onResume() {
                 ViewGroup.LayoutParams.WRAP_CONTENT);
     }
 
-    @OnClick(R.id.button_search)
+    @OnClick(R.id.buttonSearch)
     public void onSearchClicked() {
         if (mFilterListener != null) {
             mFilterListener.onFilter(getFilters());
@@ -82,7 +83,7 @@ public void onSearchClicked() {
         dismiss();
     }
 
-    @OnClick(R.id.button_cancel)
+    @OnClick(R.id.buttonCancel)
     public void onCancelClicked() {
         dismiss();
     }

firestore/app/src/main/java/com/google/firebase/example/fireeats/Filters.java → firestore/app/src/main/java/com/google/firebase/example/fireeats/java/Filters.java

@@ -1,10 +1,11 @@
-package com.google.firebase.example.fireeats;
+package com.google.firebase.example.fireeats.java;
 
 import android.content.Context;
 import android.text.TextUtils;
 
-import com.google.firebase.example.fireeats.model.Restaurant;
-import com.google.firebase.example.fireeats.util.RestaurantUtil;
+import com.google.firebase.example.fireeats.R;
+import com.google.firebase.example.fireeats.java.model.Restaurant;
+import com.google.firebase.example.fireeats.java.util.RestaurantUtil;
 import com.google.firebase.firestore.Query;
 
 /**

firestore/app/src/main/java/com/google/firebase/example/fireeats/MainActivity.java → firestore/app/src/main/java/com/google/firebase/example/fireeats/java/MainActivity.java

@@ -1,4 +1,4 @@
-package com.google.firebase.example.fireeats;
+package com.google.firebase.example.fireeats.java;
 
 import android.arch.lifecycle.ViewModelProviders;
 import android.content.DialogInterface;
@@ -26,12 +26,13 @@
 import com.google.android.gms.tasks.OnCompleteListener;
 import com.google.android.gms.tasks.Task;
 import com.google.firebase.auth.FirebaseAuth;
-import com.google.firebase.example.fireeats.adapter.RestaurantAdapter;
-import com.google.firebase.example.fireeats.model.Rating;
-import com.google.firebase.example.fireeats.model.Restaurant;
-import com.google.firebase.example.fireeats.util.RatingUtil;
-import com.google.firebase.example.fireeats.util.RestaurantUtil;
-import com.google.firebase.example.fireeats.viewmodel.MainActivityViewModel;
+import com.google.firebase.example.fireeats.R;
+import com.google.firebase.example.fireeats.java.adapter.RestaurantAdapter;
+import com.google.firebase.example.fireeats.java.model.Rating;
+import com.google.firebase.example.fireeats.java.model.Restaurant;
+import com.google.firebase.example.fireeats.java.util.RatingUtil;
+import com.google.firebase.example.fireeats.java.util.RestaurantUtil;
+import com.google.firebase.example.fireeats.java.viewmodel.MainActivityViewModel;
 import com.google.firebase.firestore.DocumentReference;
 import com.google.firebase.firestore.DocumentSnapshot;
 import com.google.firebase.firestore.FirebaseFirestore;
@@ -59,16 +60,16 @@ public class MainActivity extends AppCompatActivity implements
     @BindView(R.id.toolbar)
     Toolbar mToolbar;
 
-    @BindView(R.id.text_current_search)
+    @BindView(R.id.textCurrentSearch)
     TextView mCurrentSearchView;
 
-    @BindView(R.id.text_current_sort_by)
+    @BindView(R.id.textCurrentSortBy)
     TextView mCurrentSortByView;
 
-    @BindView(R.id.recycler_restaurants)
+    @BindView(R.id.recyclerRestaurants)
     RecyclerView mRestaurantsRecycler;
 
-    @BindView(R.id.view_empty)
+    @BindView(R.id.viewEmpty)
     ViewGroup mEmptyView;
 
     private FirebaseFirestore mFirestore;
@@ -197,13 +198,13 @@ protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         }
     }
 
-    @OnClick(R.id.filter_bar)
+    @OnClick(R.id.filterBar)
     public void onFilterClicked() {
         // Show the dialog containing filter options
         mFilterDialog.show(getSupportFragmentManager(), FilterDialogFragment.TAG);
     }
 
-    @OnClick(R.id.button_clear_filter)
+    @OnClick(R.id.buttonClearFilter)
     public void onClearFilterClicked() {
         mFilterDialog.resetFilters();
 

firestore/app/src/main/java/com/google/firebase/example/fireeats/RatingDialogFragment.java → firestore/app/src/main/java/com/google/firebase/example/fireeats/java/RatingDialogFragment.java

@@ -1,4 +1,4 @@
-package com.google.firebase.example.fireeats;
+package com.google.firebase.example.fireeats.java;
 
 import android.content.Context;
 import android.os.Bundle;
@@ -10,7 +10,8 @@
 import android.widget.EditText;
 
 import com.google.firebase.auth.FirebaseAuth;
-import com.google.firebase.example.fireeats.model.Rating;
+import com.google.firebase.example.fireeats.R;
+import com.google.firebase.example.fireeats.java.model.Rating;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
@@ -24,10 +25,10 @@ public class RatingDialogFragment extends DialogFragment {
 
     public static final String TAG = "RatingDialog";
 
-    @BindView(R.id.restaurant_form_rating)
+    @BindView(R.id.restaurantFormRating)
     MaterialRatingBar mRatingBar;
 
-    @BindView(R.id.restaurant_form_text)
+    @BindView(R.id.restaurantFormText)
     EditText mRatingText;
 
     interface RatingListener {
@@ -67,7 +68,7 @@ public void onResume() {
 
     }
 
-    @OnClick(R.id.restaurant_form_button)
+    @OnClick(R.id.restaurantFormButton)
     public void onSubmitClicked(View view) {
         Rating rating = new Rating(
                 FirebaseAuth.getInstance().getCurrentUser(),
@@ -81,7 +82,7 @@ public void onSubmitClicked(View view) {
         dismiss();
     }
 
-    @OnClick(R.id.restaurant_form_cancel)
+    @OnClick(R.id.restaurantFormCancel)
     public void onCancelClicked(View view) {
         dismiss();
     }

firestore/app/src/main/java/com/google/firebase/example/fireeats/RestaurantDetailActivity.java → firestore/app/src/main/java/com/google/firebase/example/fireeats/java/RestaurantDetailActivity.java

@@ -1,4 +1,4 @@
-package com.google.firebase.example.fireeats;
+package com.google.firebase.example.fireeats.java;
 
 import android.content.Context;
 import android.os.Bundle;
@@ -18,10 +18,11 @@
 import com.google.android.gms.tasks.OnFailureListener;
 import com.google.android.gms.tasks.OnSuccessListener;
 import com.google.android.gms.tasks.Task;
-import com.google.firebase.example.fireeats.adapter.RatingAdapter;
-import com.google.firebase.example.fireeats.model.Rating;
-import com.google.firebase.example.fireeats.model.Restaurant;
-import com.google.firebase.example.fireeats.util.RestaurantUtil;
+import com.google.firebase.example.fireeats.R;
+import com.google.firebase.example.fireeats.java.adapter.RatingAdapter;
+import com.google.firebase.example.fireeats.java.model.Rating;
+import com.google.firebase.example.fireeats.java.model.Restaurant;
+import com.google.firebase.example.fireeats.java.util.RestaurantUtil;
 import com.google.firebase.firestore.DocumentReference;
 import com.google.firebase.firestore.DocumentSnapshot;
 import com.google.firebase.firestore.EventListener;
@@ -43,31 +44,31 @@ public class RestaurantDetailActivity extends AppCompatActivity
 
     public static final String KEY_RESTAURANT_ID = "key_restaurant_id";
 
-    @BindView(R.id.restaurant_image)
+    @BindView(R.id.restaurantImage)
     ImageView mImageView;
 
-    @BindView(R.id.restaurant_name)
+    @BindView(R.id.restaurantName)
     TextView mNameView;
 
-    @BindView(R.id.restaurant_rating)
+    @BindView(R.id.restaurantRating)
     MaterialRatingBar mRatingIndicator;
 
-    @BindView(R.id.restaurant_num_ratings)
+    @BindView(R.id.restaurantNumRatings)
     TextView mNumRatingsView;
 
-    @BindView(R.id.restaurant_city)
+    @BindView(R.id.restaurantCity)
     TextView mCityView;
 
-    @BindView(R.id.restaurant_category)
+    @BindView(R.id.restaurantCategory)
     TextView mCategoryView;
 
-    @BindView(R.id.restaurant_price)
+    @BindView(R.id.restaurantPrice)
     TextView mPriceView;
 
-    @BindView(R.id.view_empty_ratings)
+    @BindView(R.id.viewEmptyRatings)
     ViewGroup mEmptyView;
 
-    @BindView(R.id.recycler_ratings)
+    @BindView(R.id.recyclerRatings)
     RecyclerView mRatingsRecycler;
 
     private RatingDialogFragment mRatingDialog;
@@ -174,12 +175,12 @@ private void onRestaurantLoaded(Restaurant restaurant) {
                 .into(mImageView);
     }
 
-    @OnClick(R.id.restaurant_button_back)
+    @OnClick(R.id.restaurantButtonBack)
     public void onBackArrowClicked(View view) {
         onBackPressed();
     }
 
-    @OnClick(R.id.fab_show_rating_dialog)
+    @OnClick(R.id.fabShowRatingDialog)
     public void onAddRatingClicked(View view) {
         mRatingDialog.show(getSupportFragmentManager(), RatingDialogFragment.TAG);
     }

firestore/app/src/main/java/com/google/firebase/example/fireeats/adapter/FirestoreAdapter.java → firestore/app/src/main/java/com/google/firebase/example/fireeats/java/adapter/FirestoreAdapter.java

@@ -1,4 +1,4 @@
-package com.google.firebase.example.fireeats.adapter;
+package com.google.firebase.example.fireeats.java.adapter;
 
 import android.support.v7.widget.RecyclerView;
 import android.util.Log;