diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 65623c7821ab301f3eec11dfb1c9ef8f6568289a..677bedf8fe1af78c73a362d388bdafdbbc8ff791 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -136,4 +136,4 @@ model_tests:
 build_android_demo:
   stage: build_android_demo
   script:
-    - pushd mace/examples/android/ && bash build.sh build && popd
+    - pushd mace/examples/android/ && bash build.sh static && bash build.sh dynamic && popd
diff --git a/mace/codegen/BUILD b/mace/codegen/BUILD
index 5122da1dac77fc5d28ba92930267a6d87b6eccad..8a24594c15662dcb04d1c10772000acc0488f835 100644
--- a/mace/codegen/BUILD
+++ b/mace/codegen/BUILD
@@ -50,7 +50,6 @@ cc_library(
     copts = ["-Werror", "-Wextra", "-Wno-missing-field-initializers"],
     deps = [
         "//mace/public",
-        "//mace/utils",
     ],
 )
 
diff --git a/mace/utils/status.cc b/mace/core/status.cc
similarity index 100%
rename from mace/utils/status.cc
rename to mace/core/status.cc
diff --git a/mace/examples/android/README.md b/mace/examples/android/README.md
index 5edfff76050c2e904ce1afa69a6518e81b281077..5d2154901a7bd7e270fa67ec5eeaa818459b8d9c 100644
--- a/mace/examples/android/README.md
+++ b/mace/examples/android/README.md
@@ -6,7 +6,16 @@ How to build
 
 ```sh
 cd mace/exampls/android
-./build.sh
+./build.sh dynamic
+# if libmace.a is needed, update `macelibrary/CMakeLists.txt` and run with `./build.sh static`.
+```
+
+Install
+---------------
+
+```sh
+# running after build step and in `mace/exampls/android` directory
+adb install ./app/build/outputs/apk/app/release/app-app-release.apk
 ```
 
 Pre-built APK
diff --git a/mace/examples/android/app/src/main/java/com/xiaomi/mace/demo/camera/CameraApiLessM.java b/mace/examples/android/app/src/main/java/com/xiaomi/mace/demo/camera/CameraApiLessM.java
index 648c0fcac4691bda5f722003c3a3ca47361af57c..6ecf0d10631087b6203a301c699b3ec85fdd6152 100644
--- a/mace/examples/android/app/src/main/java/com/xiaomi/mace/demo/camera/CameraApiLessM.java
+++ b/mace/examples/android/app/src/main/java/com/xiaomi/mace/demo/camera/CameraApiLessM.java
@@ -105,12 +105,11 @@ public class CameraApiLessM extends CameraEngage implements Camera.AutoFocusCall
         Camera.Parameters parameters = mCamera.getParameters();
         parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
         Camera.Size size = getOptimalSize(parameters.getSupportedPreviewSizes(), width, height);
-        mPreviewWidth = size.width;
-        mPreviewHeight = size.height;
+        mPreviewWidth = size.height;
+        mPreviewHeight = size.width;
         parameters.setPreviewSize(size.width, size.height);
-        parameters.setPictureSize(size.width, size.height);
         mCamera.setParameters(parameters);
-        mTextureView.setRatio(size.height, size.width);
+        mTextureView.setRatio(mPreviewWidth, mPreviewHeight);
     }
 
     private Camera.Size getOptimalSize(List<Camera.Size> sizes, int w, int h) {
diff --git a/mace/examples/android/build.sh b/mace/examples/android/build.sh
index 1cfb6129e104c61561a20532a586278232b1c467..4bbb177d406df158ad839c59ba122bf0c082df68 100755
--- a/mace/examples/android/build.sh
+++ b/mace/examples/android/build.sh
@@ -2,12 +2,47 @@
 
 set -e -u -o pipefail
 
+Usage() {
+  echo "Usage: ./build.sh [dynamic|static]"
+  echo "|==============|====================|"
+  echo "|   parameter  |  lib will linked   |"
+  echo "|==============|====================|"
+  echo "|   dynamic    |    libmace.so      |"
+  echo "|--------------|--------------------|"
+  echo "|   static     |    libmace.a       |"
+  echo "|--------------|--------------------|"
+}
+
+if [ $# -lt 1 ]; then
+  Usage
+  exit 1
+fi
+
+MACE_LINK_TYPE=$1
+
 pushd ../../../
 
 TARGET_ABI=arm64-v8a
-LIBRARY_DIR=mace/examples/android/macelibrary/src/main/cpp/
+ANDROID_DEMO_DIR=mace/examples/android/
+LIBRARY_DIR=$ANDROID_DEMO_DIR/macelibrary/src/main/cpp/
 INCLUDE_DIR=$LIBRARY_DIR/include/mace/public/
 LIBMACE_DIR=$LIBRARY_DIR/lib/$TARGET_ABI/
+LIBGNUSTL_SHARED_SO=libgnustl_shared.so
+LIBCPP_SHARED_SO=libc++_shared.so
+
+JNILIBS_DIR=$ANDROID_DEMO_DIR/macelibrary/src/main/jniLibs/$TARGET_ABI
+rm -rf $JNILIBS_DIR
+
+if [ $MACE_LINK_TYPE == "dynamic" ]; then
+  BAZEL_LIBMACE_TARGET=mace/libmace:libmace.so
+  BAZEL_GEN_LIBMACE_PATH=bazel-bin/mace/libmace/libmace.so
+elif [ $MACE_LINK_TYPE == "static" ]; then
+  BAZEL_LIBMACE_TARGET=mace/libmace:libmace_static
+  BAZEL_GEN_LIBMACE_PATH=bazel-genfiles/mace/libmace/libmace.a
+else
+  Usage
+  exit 1
+fi
 
 rm -rf $LIBRARY_DIR/include/
 mkdir -p $INCLUDE_DIR
@@ -21,14 +56,25 @@ python tools/converter.py convert --config=mace/examples/android/mobilenet.yml -
 cp -rf builds/mobilenet/include/mace/public/*.h $INCLUDE_DIR
 cp -rf builds/mobilenet/model $LIBRARY_DIR
 
-bazel build --config android --config optimization mace/libmace:libmace_static --define neon=true --define openmp=true --define opencl=true --cpu=$TARGET_ABI
+bazel build --config android --config optimization $BAZEL_LIBMACE_TARGET --define neon=true --define openmp=true --define opencl=true --cpu=$TARGET_ABI
 cp -rf mace/public/*.h $INCLUDE_DIR
-cp -rf bazel-genfiles/mace/libmace/libmace.a $LIBMACE_DIR
+cp -rf $BAZEL_GEN_LIBMACE_PATH $LIBMACE_DIR
 
-popd
+if [ $MACE_LINK_TYPE == "dynamic" ]; then
+  mkdir -p $JNILIBS_DIR
+  cp -rf $BAZEL_GEN_LIBMACE_PATH $JNILIBS_DIR
 
-if [ $# -eq 1 ] && [ $1 == "build" ]; then
-    ./gradlew build
-else
-    ./gradlew installAppRelease
+  if [[ "" != `$ANDROID_NDK_HOME/ndk-depends $BAZEL_GEN_LIBMACE_PATH | grep $LIBGNUSTL_SHARED_SO` ]]; then
+    cp -rf $ANDROID_NDK_HOME/sources/cxx-stl/gnu-libstdc++/4.9/libs/$TARGET_ABI/$LIBGNUSTL_SHARED_SO $JNILIBS_DIR
+  fi
+
+  if [[ "" != `$ANDROID_NDK_HOME/ndk-depends $BAZEL_GEN_LIBMACE_PATH | grep $LIBCPP_SHARED_SO` ]]; then
+    cp -rf $ANDROID_NDK_HOME/sources/cxx-stl/llvm-libc++/libs/$TARGET_ABI/$LIBCPP_SHARED_SO $JNILIBS_DIR
+  fi
 fi
+
+popd
+
+# Build demo
+./gradlew clean
+./gradlew build
diff --git a/mace/examples/android/macelibrary/CMakeLists.txt b/mace/examples/android/macelibrary/CMakeLists.txt
index fbdb60c55f94a5c83882f2e525b525ef51a21018..d91f77371381b1881cb96fbc5bfd5a2e56178f2f 100644
--- a/mace/examples/android/macelibrary/CMakeLists.txt
+++ b/mace/examples/android/macelibrary/CMakeLists.txt
@@ -14,9 +14,10 @@ cmake_minimum_required(VERSION 3.4.1)
 
 include_directories(${CMAKE_SOURCE_DIR}/)
 include_directories(${CMAKE_SOURCE_DIR}/src/main/cpp/include)
-set(mace_lib ${CMAKE_SOURCE_DIR}/src/main/cpp/lib/arm64-v8a/libmace.a)
+file(GLOB LIBMACE "${CMAKE_SOURCE_DIR}/src/main/cpp/lib/arm64-v8a/*")
+set(mace_lib ${LIBMACE})
 set(mobilenet_lib ${CMAKE_SOURCE_DIR}/src/main/cpp/model/arm64-v8a/mobilenet.a)
-add_library (mace_lib STATIC IMPORTED)
+add_library (mace_lib SHARED IMPORTED)
 set_target_properties(mace_lib PROPERTIES IMPORTED_LOCATION ${mace_lib})
 add_library (mobilenet_lib STATIC IMPORTED)
 set_target_properties(mobilenet_lib PROPERTIES IMPORTED_LOCATION ${mobilenet_lib})
@@ -49,8 +50,8 @@ find_library( # Sets the name of the path variable.
 
 target_link_libraries( # Specifies the target library.
                        mace_mobile_jni
-                       mace_lib
                        mobilenet_lib
+                       mace_lib
                        # Links the target library to the log library
                        # included in the NDK.
-                       ${log-lib} )
\ No newline at end of file
+                       ${log-lib} )
diff --git a/mace/libmace/mace_version_script.lds b/mace/libmace/mace_version_script.lds
index 424cef31b2ed2def8b00acfe29eee6ceeb1a4b53..04e88455f67c209c0e6c7d70cce12167a81fbad5 100644
--- a/mace/libmace/mace_version_script.lds
+++ b/mace/libmace/mace_version_script.lds
@@ -10,6 +10,7 @@ mace {
 
     # api for static library of models
     *mace*logging*LogMessage*;
+    *mace*MaceStatus*;
     *mace*NetDef*;
     *mace*MemoryType*;
     *mace*DataType*;
diff --git a/mace/utils/BUILD b/mace/utils/BUILD
index 6d6feb1a52736368198b11700de9493f65af44a6..283efa490e0a54ed48df9a61a289e5b67bf503f8 100644
--- a/mace/utils/BUILD
+++ b/mace/utils/BUILD
@@ -13,7 +13,6 @@ cc_library(
     name = "utils",
     srcs = [
         "logging.cc",
-        "status.cc",
         "string_util.cc",
     ],
     hdrs = glob([