diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..14a6ad6b
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "jni/NDKBitmap"]
+	path = jni/NDKBitmap
+	url = https://github.com/ctiao/NativeBitmapFactory.git
diff --git a/jni/NDKBitmap b/jni/NDKBitmap
new file mode 160000
index 00000000..0a84a73f
--- /dev/null
+++ b/jni/NDKBitmap
@@ -0,0 +1 @@
+Subproject commit 0a84a73f597ee1ef99598ec63954e5f16f172b83