diff --git a/app/src/main/java/com/xypower/mpapp/BridgeProvider.java b/app/src/main/java/com/xypower/mpapp/BridgeProvider.java
index 51e8bc5c..0011cc22 100644
--- a/app/src/main/java/com/xypower/mpapp/BridgeProvider.java
+++ b/app/src/main/java/com/xypower/mpapp/BridgeProvider.java
@@ -212,7 +212,14 @@ public class BridgeProvider extends ContentProvider {
 
     private int genKeys(Uri uri, ContentValues values) {
         int index = values.containsKey("index") ? values.getAsInteger("index").intValue() : 0;
+        String resultFile = values.containsKey("resultFile") ? values.getAsString("resultFile") : null;
         boolean res = MicroPhotoService.genKeys(index);
+
+        if (!TextUtils.isEmpty(resultFile)) {
+            FilesUtils.ensureParentDirectoryExisted(resultFile);
+            FilesUtils.writeTextFile(resultFile, res ? "1" : "0");
+        }
+
         return res ? 1 : 0;
     }