Externalizing the DJI Key from the code.

README.md

@@ -48,12 +48,9 @@ Note that if you are using QGroundControl on the same device as RosettaDrone, th
 
 3. Sign up for the DJI Developer Program at https://developer.dji.com/mobile-sdk/ and create an Application key. The package name should be sq.rogue.rosettadrone.
 
-4. Create a new file called keys.xml in the /values folder, and insert the following:
+4. Create a new file `~/.gradle/gradle.properties` if you don't have one yet, and add the following line to it:
     ```
-    <?xml version="1.0" encoding="utf-8"?>
-    <resources>
-        <string name="dji_key">INSERT KEY HERE</string>
-    </resources>
+    DJI_API_KEY_ROSETTA_DRONE=INSERT KEY HERE
     ```
 
 5. Run **Build->Make Project**

app/build.gradle

@@ -10,6 +10,7 @@ android {
         versionName "1.2.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         multiDexEnabled true
+        manifestPlaceholders = [DJIApiKey: project.properties['DJI_API_KEY_ROSETTA_DRONE']]
     }
 
     buildTypes {

app/src/main/AndroidManifest.xml

@@ -52,7 +52,7 @@
         <uses-library android:name="com.android.future.usb.accessory"/>
         <meta-data
             android:name="com.dji.sdk.API_KEY"
-            android:value="@string/dji_key"/>
+            android:value="${DJIApiKey}"/>
 
         <service android:name="dji.sdk.sdkmanager.DJIGlobalService">
         </service>