android: show sync progress at notification, prevent app to sleep, temp fix of hanging after closing from recent apps

app/src/main/java/mw/gri/android/MainActivity.java

@@ -1,7 +1,7 @@
 package mw.gri.android;
 
-import android.content.Intent;
 import android.os.Bundle;
+import android.os.Process;
 import android.system.ErrnoException;
 import android.system.Os;
 import com.google.androidgamesdk.GameActivity;
@@ -9,7 +9,7 @@ import com.google.androidgamesdk.GameActivity;
 public class MainActivity extends GameActivity {
 
     static {
-        System.loadLibrary("grim_android");
+        System.loadLibrary("grim");
     }
 
     @Override
@@ -20,9 +20,29 @@ public class MainActivity extends GameActivity {
             throw new RuntimeException(e);
         }
         super.onCreate(savedInstanceState);
+        BackgroundService.start(getApplicationContext());
+    }
+
+    @Override
+    protected void onDestroy() {
+        if (!mManualExit) {
+            BackgroundService.stop(getApplicationContext());
+            // Temporary fix to prevent app hanging when closed from recent apps
+            Process.killProcess(Process.myPid());
+        }
+        super.onDestroy();
     }
 
     public int[] getDisplayCutouts() {
         return Utils.getDisplayCutouts(this);
     }
+
+    private boolean mManualExit = false;
+
+    // Called from native code
+    public void onExit() {
+        mManualExit = true;
+        BackgroundService.stop(getApplicationContext());
+        finish();
+    }
 }