Update Android samples

build.gradle

@@ -30,7 +30,7 @@ static def androidCompileSdk() { return 31 }
 // 14 for Support Library, 16 for sqlite-android
 static def androidMinSdk() { return 21 }
 
-static def androidTargetSdk() { return 30 }
+static def androidTargetSdk() { return 31 }
 
 static def versionCode() { return 1 }
 

vtm-android-example/AndroidManifest.xml

@@ -20,7 +20,8 @@
         android:usesCleartextTraffic="true">
         <activity
             android:name=".Samples"
-            android:configChanges="keyboardHidden|orientation|screenSize">
+            android:configChanges="keyboardHidden|orientation|screenSize"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />

vtm-app/AndroidManifest.xml

@@ -23,6 +23,7 @@
         <activity
             android:name=".TileMap"
             android:configChanges="keyboardHidden|orientation|screenSize"
+            android:exported="true"
             android:launchMode="singleTask">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />