diff --git a/src/com/thundersoft/hz/selfportrait/detect/FaceDetect.java b/src/com/thundersoft/hz/selfportrait/detect/FaceDetect.java
index 90ccc59..a37ca09 100644
--- a/src/com/thundersoft/hz/selfportrait/detect/FaceDetect.java
+++ b/src/com/thundersoft/hz/selfportrait/detect/FaceDetect.java
@@ -42,7 +42,12 @@
      * initialize method,MUST called at first time.
      */
     public void initialize() {
-        mHandle = native_create();
+        try {
+            mHandle = native_create();
+        } catch (UnsatisfiedLinkError e) {
+            e.printStackTrace();
+            Log.e(TAG, "could not link native handle for ts_detected_face_jni library!");
+        }
     }
 
     public boolean isLibLoaded() {
@@ -54,7 +59,9 @@
      */
 
     public void uninitialize() {
-        native_destroy(mHandle);
+        if (mHandle != 0) {
+            native_destroy(mHandle);
+        }
     }
 
     /**
@@ -65,7 +72,18 @@
      * @return FaceInfo array if success, otherwise return null.
      */
     public FaceInfo[] dectectFeatures(Bitmap bmp) {
-        int count = native_detect(mHandle, bmp);
+        // check if the initialization failed
+        if (mHandle == 0) {
+            return null;
+        }
+
+        int count = 0;
+        try {
+            count = native_detect(mHandle, bmp);
+        } catch (UnsatisfiedLinkError e) {
+            e.printStackTrace();
+            Log.e(TAG, "could not link native handle for ts_detected_face_jni library!");
+        }
         if (count < 1) {
             return null;
         }