Added empty activity to be able to connect a debugger before the wallpaper is started.

Author: schlimme-gegend

core/src/processing/android/PWallpaper.java

@@ -119,12 +119,16 @@ public Engine onCreateEngine() {
   @Override
   public void onDestroy() {
     super.onDestroy();
-    if (engine != null) engine.onDestroy();
+
+    if (engine != null){
+      //engine.sketch = null;
+      engine.onDestroy();
+    }
   }
 
 
   public class WallpaperEngine extends Engine implements ServiceEngine {
-    private PApplet sketch;
+    PApplet sketch;
     private float xOffset, xOffsetStep;
     private float yOffset, yOffsetStep;
     private int xPixelOffset, yPixelOffset;

studio/apps/wallpaper/src/main/AndroidManifest.xml

@@ -10,5 +10,11 @@
             <meta-data android:name="android.service.wallpaper" android:resource="@xml/wallpaper"/>
         </service>
         <activity android:name="processing.android.PermissionRequestor"/>
+        <activity android:name=".DebuggerEntryPointActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
     </application>
 </manifest>

studio/apps/wallpaper/src/main/java/wallpaper/DebuggerEntryPointActivity.java

@@ -0,0 +1,12 @@
+package wallpaper;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+
+public class DebuggerEntryPointActivity extends Activity {
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+}