fix: add and use the secrets plugin in the snippets

snippets/app/build.gradle

@@ -1,5 +1,8 @@
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
+plugins {
+    id 'com.android.application'
+    id 'kotlin-android'
+    id 'com.google.android.libraries.mapsplatform.secrets-gradle-plugin'
+}
 
 android {
     compileSdk 33
@@ -52,3 +55,13 @@ dependencies {
     // [END maps_android_places_upgrade_snippet]
 }
 // [END maps_android_places_install_snippet]
+
+secrets {
+    // To add your Google Maps Platform API key to this project:
+    // 1. Create or open file secrets.properties in the root folder of the project, which will be
+    // read by secrets_gradle_plugin
+    // 2. Add this line, replacing YOUR_API_KEY with a key from a project with Places API enabled:
+    //        PLACES_API_KEY=YOUR_API_KEY
+    propertiesFileName = "secrets.properties"
+    defaultPropertiesFileName 'local.defaults.properties'
+}

snippets/app/src/main/java/com/google/places/GetStartedActivity.java

@@ -29,9 +29,9 @@ protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        final String apiKey = "You API key";
         // [START maps_places_get_started]
         // Initialize the SDK
+        final String apiKey = BuildConfig.PLACES_API_KEY;
         Places.initialize(getApplicationContext(), apiKey);
 
         // Create a new PlacesClient instance

snippets/app/src/main/java/com/google/places/PlaceAutocompleteActivity.java

@@ -56,9 +56,9 @@ protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        final String apiKey = "You API key";
         // [START maps_places_get_started]
         // Initialize the SDK
+        final String apiKey = BuildConfig.PLACES_API_KEY;
         Places.initialize(getApplicationContext(), apiKey);
 
         // Create a new PlacesClient instance

snippets/app/src/main/java/com/google/places/kotlin/GetStartedActivity.kt

@@ -17,6 +17,7 @@ package com.google.places.kotlin
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
 import com.google.android.libraries.places.api.Places
+import com.google.places.BuildConfig
 import com.google.places.R
 
 class GetStartedActivity : AppCompatActivity() {
@@ -25,9 +26,9 @@ class GetStartedActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
-        val apiKey = "Your API key"
         // [START maps_places_get_started]
         // Initialize the SDK
+        val apiKey = BuildConfig.PLACES_API_KEY
         Places.initialize(applicationContext, apiKey)
 
         // Create a new PlacesClient instance

snippets/app/src/main/java/com/google/places/kotlin/PlaceAutocompleteActivity.kt

@@ -35,6 +35,7 @@ import com.google.android.libraries.places.widget.Autocomplete
 import com.google.android.libraries.places.widget.AutocompleteSupportFragment
 import com.google.android.libraries.places.widget.listener.PlaceSelectionListener
 import com.google.android.libraries.places.widget.model.AutocompleteActivityMode
+import com.google.places.BuildConfig
 import com.google.places.R
 
 class PlaceAutocompleteActivity : AppCompatActivity() {
@@ -44,9 +45,9 @@ class PlaceAutocompleteActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
-        val apiKey = "Your API key"
         // [START maps_places_get_started]
         // Initialize the SDK
+        val apiKey = BuildConfig.PLACES_API_KEY
         Places.initialize(applicationContext, apiKey)
 
         // Create a new PlacesClient instance

snippets/app/src/main/java/com/google/places/kotlin/PlacePhotosActivity.kt

@@ -42,12 +42,12 @@ class PlacePhotosActivity : AppCompatActivity() {
                 val place = response.place
 
                 // Get the photo metadata.
-                val metada = place.photoMetadatas
-                if (metada == null || metada.isEmpty()) {
+                val metadata = place.photoMetadatas
+                if (metadata == null || metadata.isEmpty()) {
                     Log.w(TAG, "No photo metadata.")
                     return@addOnSuccessListener
                 }
-                val photoMetadata = metada.first()
+                val photoMetadata = metadata.first()
 
                 // Get the attribution text.
                 val attributions = photoMetadata?.attributions

snippets/build.gradle

@@ -11,6 +11,7 @@ buildscript {
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
+        classpath 'com.google.android.libraries.mapsplatform.secrets-gradle-plugin:secrets-gradle-plugin:2.0.1'
     }
 }
 

snippets/local.defaults.properties

@@ -0,0 +1 @@
+PLACES_API_KEY="DEFAULT_API_KEY"