Add fix for moveToForeground. Requires new permission for Android 10

README.md

@@ -81,6 +81,8 @@ cordova.plugins.backgroundMode.un('EVENT', function);
 ### Transit between application states
 Android allows to programmatically move from foreground to background or vice versa. 
 
+Note: starting with Android 10, you must request the "Draw on Top" permission from the user or the call to `moveToForeground` will silently fail. You can request it with `cordova.plugins.backgroundMode.requestForegroundPermission();`. This permission isn't necessary for `moveToBackground`
+
 ```js
 cordova.plugins.backgroundMode.moveToBackground();
 // or

plugin.xml

@@ -78,6 +78,7 @@
             <uses-permission android:name="android.permission.WAKE_LOCK" />
 			<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
             <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
+            <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
         </config-file>
 
         <source-file

src/android/BackgroundModeExt.java

@@ -34,6 +34,7 @@ import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.os.Build;
 import android.os.PowerManager;
+import android.provider.Settings;
 import android.view.View;
 
 import org.apache.cordova.CallbackContext;
@@ -109,6 +110,9 @@ public class BackgroundModeExt extends CordovaPlugin {
             case "foreground":
                 moveToForeground();
                 break;
+            case "requestTopPermissions":
+                requestTopPermissions();
+                break;
             case "tasklist":
                 excludeFromTaskList();
                 break;
@@ -249,6 +253,20 @@ public class BackgroundModeExt extends CordovaPlugin {
         callback.sendPluginResult(res);
     }
 
+     private void requestTopPermissions() {
+        if (SDK_INT >= M) {
+
+            Activity activity = cordova.getActivity();
+            if (Settings.canDrawOverlays(activity.getApplicationContext())) {
+                return;
+            }
+
+            String pkgName    = activity.getPackageName();
+            Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + pkgName));
+            activity.startActivity(intent);
+        }
+    }
+
     /**
      * Opens the system settings dialog where the user can tweak or turn off any
      * custom app start settings added by the manufacturer if available.

www/background-mode.js

@@ -252,6 +252,17 @@ exports.moveToForeground = function()
     }
 };
 
+/**
+ * Requests permission to "draw on top" which is necessary for the "moveToForeground" method in Android 10+
+ *
+ * @return [ Void ]
+ */
+exports.requestForegroundPermission = function() {
+    if (this._isAndroid) {
+        cordova.exec(null, null, 'BackgroundModeExt', 'requestTopPermissions', []);
+    }
+};
+
 /**
  * Exclude the app from the recent tasks list (Android only).
  *