Simple Google Maps example

Here is one simplest possible example of google maps.

First start new "Empty Views Activity" like I already explained here

In "\GoogleMapsTestSandBox\app\build.gradle.kts" I have added "com.google.android.gms:play-services-maps:19.2.0", so my dependencies looks like

dependencies {
    implementation(libs.androidx.core.ktx)
    implementation(libs.androidx.appcompat)
    implementation(libs.material)
    implementation(libs.androidx.activity)
    implementation(libs.androidx.constraintlayout)
    testImplementation(libs.junit)
    androidTestImplementation(libs.androidx.junit)
    androidTestImplementation(libs.androidx.espresso.core)

    implementation("com.google.android.gms:play-services-maps:19.2.0")
}

Since I don't want to make google maps key public, I will add "secrets" file. To do it, first I wil add id("com.google.android.libraries.mapsplatform.secrets-gradle-plugin") version "2.0.1" plugin in gradle "\GoogleMapsTestSandBox\app\build.gradle.kts":

plugins {
    alias(libs.plugins.android.application)
    alias(libs.plugins.kotlin.android)
    id("com.google.android.libraries.mapsplatform.secrets-gradle-plugin") version "2.0.1"
}

Before I sync my gradle, I need to add two files local.defaults.properties and secrets.properties.

local.defaults.properties:

MAPS_API_KEY=DEFAULT_API_KEY

secrets.properties:

sdk.dir=C\:\\Users\\smilosev\\AppData\\Local\\Android\\Sdk
MAPS_API_KEY=myMapsApiKey;

Now in "\GoogleMapsTestSandBox\app\src\main\AndroidManifest.xml" add:

<meta-data
	android:name="com.google.android.geo.API_KEY"
	android:value="${MAPS_API_KEY}" />

Since in this example I just want to display google maps my "\GoogleMapsTestSandBox\app\src\main\res\layout\activity_main.xml" will look like:

<fragment
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/map"
    android:name="com.google.android.gms.maps.SupportMapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

For this, simplest example my "\GoogleMapsTestSandBox\app\src\main\java\com\milosev\googlemapstestsandbox\MainActivity.kt" will look like:

package com.milosev.googlemapstestsandbox

import android.os.Bundle
import androidx.activity.enableEdgeToEdge
import androidx.appcompat.app.AppCompatActivity

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(R.layout.activity_main)
    }
}

Example download from here.