diff --git a/library/src/main/java/com/github/gzuliyujiang/oaid/DeviceID.java b/library/src/main/java/com/github/gzuliyujiang/oaid/DeviceID.java
index 508c547..1ec5f26 100644
--- a/library/src/main/java/com/github/gzuliyujiang/oaid/DeviceID.java
+++ b/library/src/main/java/com/github/gzuliyujiang/oaid/DeviceID.java
@@ -125,6 +125,9 @@ public void onOAIDGetComplete(String result) {
                 Holder.INSTANCE.clientId = result;
                 Holder.INSTANCE.oaid = result;
                 OAIDLog.print("Client id is OAID/AAID: " + result);
+                if (callback != null) {
+                    callback.onComplete(result, null);
+                }
             }
 
             @Override
diff --git a/library/src/main/java/com/github/gzuliyujiang/oaid/impl/MeizuImpl.java b/library/src/main/java/com/github/gzuliyujiang/oaid/impl/MeizuImpl.java
index c273f4b..686dfe8 100644
--- a/library/src/main/java/com/github/gzuliyujiang/oaid/impl/MeizuImpl.java
+++ b/library/src/main/java/com/github/gzuliyujiang/oaid/impl/MeizuImpl.java
@@ -12,6 +12,7 @@
  */
 package com.github.gzuliyujiang.oaid.impl;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.pm.ProviderInfo;
 import android.database.Cursor;
@@ -58,6 +59,7 @@ public void doGet(final IGetter getter) {
         try (Cursor cursor = context.getContentResolver().query(uri, null, null,
                 new String[]{"oaid"}, null)) {
             Objects.requireNonNull(cursor).moveToFirst();
+            @SuppressLint("Range")
             String oaid = cursor.getString(cursor.getColumnIndex("value"));
             if (oaid == null || oaid.length() == 0) {
                 throw new OAIDException("OAID query failed");