Unable to load map_view on fullscreen on Flutter - google-maps

Question

I have an issue when I try to load a google map in fullscreen.
I have followed all the docs in pub.dartland.org for map_view :
in my AndroidManifest.xml I had :
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
Also added :
<meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="your_api_key"/>
<meta-data android:name="com.google.android.gms.version" android:value="#integer/google_play_services_version"/>
Of course with the apiKey changed, and also :
<activity android:name="com.apptreesoftware.mapview.MapActivity" android:theme="#style/Theme.AppCompat.Light.DarkActionBar"/>
I also add the kotlin dependencies in build.graddle.
So now I can see the staticUri map on the device, great, but when I tap on this map to get it in fullscreen, the app crash with this error :
D/AndroidRuntime( 4373): Shutting down VM
E/AndroidRuntime( 4373): FATAL EXCEPTION: main
E/AndroidRuntime( 4373): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.apptreesoftware.mapview.MapActivity}: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class fragment
E/AndroidRuntime( 4373): Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class fragment
E/AndroidRuntime( 4373): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
E/AndroidRuntime( 4373): Caused by: java.lang.RuntimeException: API key not found. Check that <meta-data android:name="com.google.android.geo.API_KEY" android:value="your API key"/> is in the <application> element of AndroidManifest.xml
I tried by adding :
<meta-data android:name="com.google.android.geo.API_KEY" android:value="xxxxxxxxxxxxxxx"/>
But same issue, maybe someone have an idea ?
EDIT :
Here is my AndroidManifest.xml :
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myapp">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<application
android:name="io.flutter.app.FlutterApplication"
android:label="my-app"
android:icon="#mipmap/ic_launcher">
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
android:theme="#style/LaunchTheme"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density"
android:hardwareAccelerated="true"
android:windowSoftInputMode="adjustResize">
<meta-data
android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
android:value="true" />
<meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="XXXXXXXXXXXXXX"/>
<!-- <meta-data android:name="com.google.android.geo.API_KEY" android:value="XXXXXXXXXXXXXXXX"/> -->
<meta-data android:name="com.google.android.gms.version" android:value="#integer/google_play_services_version"/>
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity android:name="com.apptreesoftware.mapview.MapActivity" android:theme="#style/Theme.AppCompat.Light.DarkActionBar"/>
</application>
</manifest>

Answer 1

Ok, you need to move the google maps meta-data outside your activity tag , like this:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myapp">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<application
android:name="io.flutter.app.FlutterApplication"
android:label="my-app"
android:icon="#mipmap/ic_launcher">
<meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="XXXXXXXXXXXXXX"/>
<meta-data android:name="com.google.android.gms.version" android:value="#integer/google_play_services_version"/>
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
android:theme="#style/LaunchTheme"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density"
android:hardwareAccelerated="true"
android:windowSoftInputMode="adjustResize">
<meta-data
android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
android:value="true" />
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity android:name="com.apptreesoftware.mapview.MapActivity" android:theme="#style/Theme.AppCompat.Light.DarkActionBar"/>
</application>
</manifest>
You can find more information here:
https://developer.android.com/guide/topics/manifest/meta-data-element
In summary, the metadata is related to the parent component, so in this case you need that metadata for all of the app, not just for one activity :).