MapActivity: set APIKey programmatically

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I currently use a MapActivity in my application. I use it with 2 API Keys. One for debugging, and one for "production"

I am fed up with changing these values in the xml layout:

 <view class="com.google.android.maps.MapView" 
        android:id="@+id/myGmap" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent"
        android:enabled="true"
        android:clickable="true"
        android:apiKey="@string/api_key_prod" />

I am fed up trying to change the apikey each time and replace prod by debug each time.

Is that possible to change this key within the onCreate() of my application.

Imagine that I have a boolean preference that look like: isDebug.

I may check thi preference on my phone and disable it by default on user application. and make something like:

 if (isDebug)
     myMap.setApiKey(R.string.api_key_debug)
 else
     myMap.setApiKey(R.string.api_key_prod)

Thank a lot for any help.

5 Answers

For extra security put your API key and secrets in the local.properties file and access it using BuildConfig as follows:

  1. In your top-level settings.gradle file, include the Gradle plugin portal, Google Maven repository, and Maven central repository under the pluginManagement block. The pluginManagement block must appear before any other statements in the script.

    pluginManagement {
        repositories {
            gradlePluginPortal()
            google()
            mavenCentral()
        }
    }
    
  2. In Android Studio, open your project-level build.gradle file and add the following code to the dependencies element under buildscript:

    plugins {
        // ...
        id 'com.google.android.libraries.mapsplatform.secrets-gradle-plugin' version '2.0.1' apply false
    }
    
  3. Open your module-level build.gradle file and add the following code to the plugins element.

    plugins {
        //  ...
        id 'com.google.android.libraries.mapsplatform.secrets-gradle-plugin'
    }
    
  4. Save the file and sync your project with Gradle.

  5. Open the local.properties in your project level directory, and then add the following code. Replace YOUR_API_KEY with your API key.

    MAPS_API_KEY=YOUR_API_KEY
    
  6. Save the file.

    • Access the key within AndroidManifest.xml file: In your AndroidManifest.xml file, go to com.google.android.geo.API_KEY and update the android:value attribute with MAPS_API_KEY as follows:

        <meta-data
            android:name="com.google.android.geo.API_KEY"
            android:value="${MAPS_API_KEY}" />
      
    • Access the key within Java/Kotlin code: Just use BuildConfig as follows:

        BuildConfig.MAPS_API_KEY
      

More can be found in docs.

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