Add java demo

paddle/fluid/lite/CMakeLists.txt

@@ -98,7 +98,7 @@ add_custom_target(lite_compile_deps COMMAND echo 1)
 set(offline_lib_registry_file "${CMAKE_BINARY_DIR}/lite_libs.txt")
 file(WRITE ${offline_lib_registry_file} "") # clean
 
-set(__lite_cc_files "";"")
+set(__lite_cc_files "" ; "")
 set(__lite_cc_files "${CMAKE_BINARY_DIR}/lite_cc_files.txt")
 file(WRITE ${__lite_cc_files} "") # clean
 # cc_library with branch support.
@@ -272,6 +272,8 @@ if (LITE_WITH_LIGHT_WEIGHT_FRAMEWORK)
     #cc_library(inference_mobile_lib DEPS light_api_lite)
     # copy cpp mobile_light demo/lib
     add_custom_target(publish_inference_mobile_lib ${TARGET}
+            COMMAND mkdir -p "${INFER_LITE_PUBLISH_ROOT}/cxx/lib"
+            COMMAND mkdir -p "${INFER_LITE_PUBLISH_ROOT}/demo/cxx"
             COMMAND cp "${CMAKE_BINARY_DIR}/libpaddle_api_light_bundled.a" "${INFER_LITE_PUBLISH_ROOT}/cxx/lib"
             COMMAND cp -r "${CMAKE_SOURCE_DIR}/paddle/fluid/lite/demo/cxx/mobile_light" "${INFER_LITE_PUBLISH_ROOT}/demo/cxx"
             )
@@ -282,8 +284,30 @@ if (LITE_WITH_LIGHT_WEIGHT_FRAMEWORK)
         # copy java mobile_light demo/lib
         add_custom_target(publish_java_inference_mobile_lib ${TARGET}
                 COMMAND mkdir -p "${INFER_LITE_PUBLISH_ROOT}/java/so"
+                COMMAND mkdir -p "${INFER_LITE_PUBLISH_ROOT}/demo/java"
                 COMMAND cp "${CMAKE_BINARY_DIR}/paddle/fluid/lite/api/android/jni/libpaddle_lite_jni.so" "${INFER_LITE_PUBLISH_ROOT}/java/so"
                 COMMAND cp -r "${CMAKE_SOURCE_DIR}/paddle/fluid/lite/api/android/jni/src" "${INFER_LITE_PUBLISH_ROOT}/java"
+                COMMAND cp -r "${CMAKE_SOURCE_DIR}/paddle/fluid/lite/demo/java/android" "${INFER_LITE_PUBLISH_ROOT}/demo/java"
+                COMMAND cp -r "${CMAKE_BINARY_DIR}/third_party/install/inception_v4_simple"
+                    "${INFER_LITE_PUBLISH_ROOT}/demo/java/android/PaddlePredictor/app/src/main/assets"
+                COMMAND cp -r "${CMAKE_BINARY_DIR}/third_party/install/lite_naive_model"
+                    "${INFER_LITE_PUBLISH_ROOT}/demo/java/android/PaddlePredictor/app/src/main/assets"
+                COMMAND cp -r "${CMAKE_BINARY_DIR}/third_party/install/mobilenet_v1"
+                    "${INFER_LITE_PUBLISH_ROOT}/demo/java/android/PaddlePredictor/app/src/main/assets"
+                COMMAND cp -r "${CMAKE_BINARY_DIR}/third_party/install/mobilenet_v2_relu"
+                    "${INFER_LITE_PUBLISH_ROOT}/demo/java/android/PaddlePredictor/app/src/main/assets"
+                COMMAND cp -r "${CMAKE_BINARY_DIR}/third_party/install/resnet50"
+                    "${INFER_LITE_PUBLISH_ROOT}/demo/java/android/PaddlePredictor/app/src/main/assets"
+                COMMAND cp "${CMAKE_BINARY_DIR}/paddle/fluid/lite/api/android/jni/libpaddle_lite_jni.so"
+                    "${INFER_LITE_PUBLISH_ROOT}/demo/java/android/PaddlePredictor/app/src/main/jniLibs/arm7"
+                COMMAND cp "${CMAKE_BINARY_DIR}/paddle/fluid/lite/api/android/jni/libpaddle_lite_jni.so"
+                    "${INFER_LITE_PUBLISH_ROOT}/demo/java/android/PaddlePredictor/app/src/main/jniLibs/arm8"
+                COMMAND cp "${CMAKE_BINARY_DIR}/paddle/fluid/lite/api/android/jni/libpaddle_lite_jni.so"
+                    "${INFER_LITE_PUBLISH_ROOT}/demo/java/android/PaddlePredictor/app/src/main/jniLibs/arm64-v8a"
+                COMMAND cp "${CMAKE_BINARY_DIR}/paddle/fluid/lite/api/android/jni/libpaddle_lite_jni.so"
+                    "${INFER_LITE_PUBLISH_ROOT}/demo/java/android/PaddlePredictor/app/src/main/jniLibs/armeabi-v7a"
+                COMMAND cp "${CMAKE_BINARY_DIR}/paddle/fluid/lite/api/android/jni/libpaddle_lite_jni.so"
+                    "${INFER_LITE_PUBLISH_ROOT}/demo/java/android/PaddlePredictor/app/src/main/jniLibs/x86"
                 )
         add_dependencies(publish_java_inference_mobile_lib paddle_lite_jni)
         add_dependencies(publish_inference_lite publish_java_inference_mobile_lib)

paddle/fluid/lite/demo/java/README.md

+# Java Android Demo
+
+要编译和跑起 ./android 文件夹下的 Android demo 程序 PaddlePredictor，你需要准备：
+
+1. 一台能运行安卓程序的安卓手机
+2. 一台带有AndroidStudio的开发机
+
+## 如果你使用我们的 cmake 生成 demo 程序，
+
+可以直接把 `${INFER_LITE_PUBLISH_ROOT}/demo/java/android/PaddlePredictor`  载入你的AndroidStudio，
+运行，查看本文末尾的程序运行显示结果。
+
+## 手动编译（给测试人员需要更新 demo 模型或 .so 库可阅读）
+
+###编译：
+首先在PaddleLite的开发Docker镜像中，拉取最新PaddleLite代码，编译对应你手机架构的预测库，
+下面我们以arm8 架构举例。进入paddlelite 目录，运行以下cmake 和make 命令：
+
+```
+mkdir -p build.lite.android.arm8.gcc
+cd build.lite.android.arm8.gcc
+
+cmake .. \
+-DWITH_GPU=OFF \
+-DWITH_MKL=OFF \
+-DWITH_LITE=ON \
+-DLITE_WITH_JAVA=ON \
+-DLITE_WITH_CUDA=OFF \
+-DLITE_WITH_X86=OFF \
+-DLITE_WITH_ARM=ON \
+-DLITE_WITH_LIGHT_WEIGHT_FRAMEWORK=ON \
+-DWITH_TESTING=ON \
+-DARM_TARGET_OS=android -DARM_TARGET_ARCH_ABI=armv8 -DARM_TARGET_LANG=gcc
+
+make -j 4
+```
+
+Make完成后查看要存在`build.lite.android.arm8.gcc/paddle/fluid/lite/api/android/jni/libpaddle_lite_jni.so`
+这个文件。该文件为PaddleLite c++ 动态链接库。接下来Android Java 代码会load 这个库来跑c++ 代码
+
+### 把.so动态库拷贝进安卓demo程序：
+把本文件夹下 demo/PaddlePredictor 载入到AndroidStudio。把上一步提到的`libpaddle_lite_jni.so`
+拷贝进 `PaddlePredictor/app/src/main/jinLibs/所有架构文件夹下` 比如文件夹arm8里要包含该 .so文件：
+
+### 把demo使用到的模型文件拷贝进安卓程序：
+在 `build.lite.android.arm8.gcc/third_party/install` 文件夹下，把以下我们的模型文件夹拷贝进
+`PaddlePredictor/app/src/main/assets` 这个文件夹
+需要拷贝的模型文件：
+
+    inception_v4_simple
+    lite_naive_model
+    mobilenet_v1
+    mobilenet_v2_relu
+    resnet50
+
+## 运行 Android 程序结果
+以上准备工作完成，就可以开始Build ，安装，和跑安卓demo程序。当你运行PaddlePredictor 程序时，大概会等10秒，
+然后看到类似以下字样：
+
+    lite_naive_model output: 50.213173, -28.872887
+    expected: 50.2132, -28.8729
+
+    inception_v4_simple test:true
+    time: 2078 ms
+
+    resnet50 test:true
+    time: 2078 ms
+
+    mobilenet_v1 test:true
+    time: 2078 ms
+
+    mobilenet_v2 test:true
+    time: 2078 ms
+
+该 demo 程序跑我们的 5 个模型，第一个模型结果将真正的头两个数字输出，并在第二行附上期望的正确值。你应该要
+看到他们的误差小于0.001。后面四个模型如果你看到 test:true 字样，说明模型输出通过了我们在 demo 程序里对其输出
+的测试。time 代表该测试花费的时间。 

paddle/fluid/lite/demo/java/android/.gitignore

+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/.gitignore

+/build

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/proguard-rules.pro

+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/androidTest/java/com/baidu/paddle/lite/ExampleInstrumentedTest.java

+package com.baidu.paddle.lite;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.baidu.paddle.lite", appContext.getPackageName());
+    }
+}

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/AndroidManifest.xml

+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.baidu.paddle.lite">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/assets/README.txt

+After build PaddleLite in your build folder, copy following models in this directory:
+
+inception_v4_simple
+lite_naive_model
+mobilenet_v1
+mobilenet_v2_relu
+resnet50

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/java/com/baidu/paddle/lite/MainActivity.java

+package com.baidu.paddle.lite;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.widget.TextView;
+
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.Date;
+import java.util.ArrayList;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        String textOutput = "";
+        ArrayList<float[]> output;
+        output = runNaiveModel("lite_naive_model");
+        textOutput += "lite_naive_model output: " + output.get(0)[0] + ", " + output.get(1)[1] + "\n";
+        textOutput += "expected: 50.2132, -28.8729\n";
+
+        Date start = new Date();
+        output = runImageModel("inception_v4_simple");
+        Date end = new Date();
+        textOutput += "\ninception_v4_simple test: " + testInceptionV4Simple(output) + "\n";
+        textOutput += "time: " + (end.getTime() - start.getTime()) + " ms\n";
+
+        start = new Date();
+        output = runImageModel("resnet50");
+        end = new Date();
+        textOutput += "\nresnet50 test: " + testResnet50(output) + "\n";
+        textOutput += "time: " + (end.getTime() - start.getTime()) + " ms\n";
+
+        start = new Date();
+        output = runImageModel("mobilenet_v1");
+        end = new Date();
+        textOutput += "\nmobilenet_v1 test: " + testMobileNetV1(output) + "\n";
+        textOutput += "time: " + (end.getTime() - start.getTime()) + " ms\n";
+
+        start = new Date();
+        output = runImageModel("mobilenet_v2_relu");
+        end = new Date();
+        textOutput += "\nmobilenet_v2 test: " + testMobileNetV2Relu(output) + "\n";
+        textOutput += "time: " + (end.getTime() - start.getTime()) + " ms\n";
+
+        TextView textView = findViewById(R.id.text_view);
+        textView.setText(textOutput);
+    }
+
+    public String copyFromAssetsToCache(String modelPath) {
+        String newPath = getCacheDir() + "/" + modelPath;
+        // String newPath = "/sdcard/" + modelPath;
+        File desDir = new File(newPath);
+
+        try {
+            if (!desDir.exists()) {
+                desDir.mkdir();
+            }
+            for (String fileName : this.getAssets().list(modelPath)) {
+                InputStream stream = getAssets().open(modelPath + "/" + fileName);
+                OutputStream output = new BufferedOutputStream(new FileOutputStream(newPath + "/" + fileName));
+
+                byte data[] = new byte[1024];
+                int count;
+
+                while ((count = stream.read(data)) != -1) {
+                    output.write(data, 0, count);
+                }
+
+                output.flush();
+                output.close();
+                stream.close();
+            }
+
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+
+        return desDir.getPath();
+    }
+
+    public ArrayList<float[]> runModel(String modelName, int[] dims, float[] inputBuffer) {
+        String modelPath = copyFromAssetsToCache(modelName);
+
+        // Cxx Model
+        Place[] validPlaces = new Place[2];
+        validPlaces[0] = new Place(Place.TargetType.X86, Place.PrecisionType.FLOAT);
+        validPlaces[1] = new Place(Place.TargetType.ARM, Place.PrecisionType.FLOAT);
+        Place preferredPlace = validPlaces[1];
+
+        PaddlePredictor.loadCxxModel(modelPath, preferredPlace, validPlaces);
+        PaddlePredictor.setInput(0, dims, inputBuffer);
+        PaddlePredictor.run();
+        float[] cxxOutput = PaddlePredictor.getFloatOutput(0);
+
+        String optimizedModelPath = modelPath + ".opt";
+        if (!new File(optimizedModelPath).exists()) {
+            PaddlePredictor.saveOptimizedModel(optimizedModelPath);
+        }
+        PaddlePredictor.clear();
+
+        // Mobile Model
+        PaddlePredictor.loadMobileModel(optimizedModelPath);
+        PaddlePredictor.setInput(0, dims, inputBuffer);
+        PaddlePredictor.run();
+        float[] mobileOutput = PaddlePredictor.getFloatOutput(0);
+        PaddlePredictor.clear();
+
+        ArrayList<float[]> result = new ArrayList<>();
+        result.add(cxxOutput);
+        result.add(mobileOutput);
+        return result;
+    }
+
+
+    public ArrayList<float[]> runNaiveModel(String modelName) {
+        int[] dims = {100, 100};
+        float[] inputBuffer = new float[10000];
+        for (int i = 0; i < 10000; ++i) {
+            inputBuffer[i] = i;
+        }
+        return runModel(modelName, dims, inputBuffer);
+    }
+
+    /**
+     * Input size is 3 * 224 * 224
+     *
+     * @param modelName
+     * @return
+     */
+    public ArrayList<float[]> runImageModel(String modelName) {
+        int[] dims = {1, 3, 224, 224};
+        int item_size = 3 * 224 * 224;
+        float[] inputBuffer = new float[item_size];
+        for (int i = 0; i < item_size; ++i) {
+            inputBuffer[i] = 1;
+        }
+        return runModel(modelName, dims, inputBuffer);
+    }
+
+    public boolean equalsNear(float a, float b, float delta) {
+        return a >= b - delta && a <= b + delta;
+    }
+
+    public boolean expectedResult(float[] expected, ArrayList<float[]> result) {
+        if (result.size() != 2) {
+            return false;
+        }
+        if (expected.length != 20) {
+            return false;
+        }
+
+        float[] output = result.get(0);
+        float[] output1 = result.get(1);
+        if (output.length != output1.length || output.length != 1000) {
+            return false;
+        }
+        for (int i = 0; i < output.length; ++i) {
+            if (!equalsNear(output[i], output1[i], 1e-6f)) {
+                return false;
+            }
+        }
+        int step = 50;
+        for (int i = 0; i < expected.length; ++i) {
+            if (!equalsNear(output[i * step], expected[i], 1e-6f)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    public boolean testInceptionV4Simple(ArrayList<float[]> output) {
+        float[] expected = {0.0011684548f, 0.0010390386f, 0.0011301535f, 0.0010133048f,
+                0.0010259597f, 0.0010982729f, 0.00093195855f, 0.0009141837f,
+                0.00096620916f, 0.00089982944f, 0.0010064574f, 0.0010474789f,
+                0.0009782845f, 0.0009230255f, 0.0010548076f, 0.0010974824f,
+                0.0010612885f, 0.00089107914f, 0.0010112736f, 0.00097655767f};
+        return expectedResult(expected, output);
+    }
+
+    public boolean testResnet50(ArrayList<float[]> output) {
+        float[] expected = {0.00024139918f, 0.00020566184f, 0.00022418296f, 0.00041731037f,
+                0.0005366107f, 0.00016948722f, 0.00028638865f, 0.0009257241f,
+                0.00072681636f, 8.531815e-05f, 0.0002129998f, 0.0021168243f,
+                0.006387163f, 0.0037145028f, 0.0012812682f, 0.00045948103f,
+                0.00013535398f, 0.0002483765f, 0.00076759676f, 0.0002773295f};
+        return expectedResult(expected, output);
+    }
+
+    public boolean testMobileNetV1(ArrayList<float[]> output) {
+        float[] expected = {0.00019130898f, 9.467885e-05f, 0.00015971427f, 0.0003650665f,
+                0.00026431272f, 0.00060884043f, 0.0002107942f, 0.0015819625f,
+                0.0010323516f, 0.00010079765f, 0.00011006987f, 0.0017364529f,
+                0.0048292773f, 0.0013995157f, 0.0018453331f, 0.0002428986f,
+                0.00020211363f, 0.00013668182f, 0.0005855956f, 0.00025901722f};
+        return expectedResult(expected, output);
+    }
+
+    public boolean testMobileNetV2Relu(ArrayList<float[]> output) {
+        float[] expected = {0.00017082224f, 5.699624e-05f, 0.000260885f, 0.00016412718f,
+                0.00034818667f, 0.00015230637f, 0.00032959113f, 0.0014772735f,
+                0.0009059976f, 9.5378724e-05f, 5.386537e-05f, 0.0006427285f,
+                0.0070957416f, 0.0016094646f, 0.0018807327f, 0.00010506048f,
+                6.823785e-05f, 0.00012269315f, 0.0007806194f, 0.00022354358f};
+        return expectedResult(expected, output);
+    }
+
+}

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/java/com/baidu/paddle/lite/PaddlePredictor.java

+/* Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License. */
+
+package com.baidu.paddle.lite;
+
+/** Java Native Interface (JNI) class for Paddle Lite APIs */
+public class PaddlePredictor {
+
+    /** name of C++ JNI lib */
+    private final static String JNI_LIB_NAME = "paddle_lite_jni";
+
+    /* load the C++ JNI lib */
+    static {
+        System.loadLibrary(JNI_LIB_NAME);
+    }
+
+    /**
+     * Loads mobile cxx model, which is the model before optimizing passes. The cxx
+     * model allow users to manage hardware place resources. Caller uses a place at
+     * Java to control Target, DataLayout, Precision, and Device ID. More details
+     * about the four fields see our Paddle-Mobile document.
+     *
+     *
+     * @param modelPath      modelPath model file path
+     * @param preferredPlace preferred place to run Cxx Model
+     * @param validPlaces    n * 4 int array, valid places to run Cxx Model
+     * @return true if load successfully
+     */
+    public static native boolean loadCxxModel(String modelPath, Place preferredPlace, Place[] validPlaces);
+
+    /**
+     * Loads mobile lite model, which is the model after optimizing passes.
+     *
+     * @param modelPath model file path
+     * @return true if load successfully
+     */
+    public static native boolean loadMobileModel(String modelPath);
+
+    /**
+     * Saves optimized model, which is the model can be used by
+     * {@link loadMobileModel}
+     *
+     * @param modelPath model file path
+     * @return true if save successfully
+     */
+    public static native boolean saveOptimizedModel(String modelPath);
+
+    /**
+     * Clears the current loaded model.
+     *
+     * @return true if a loaded model has been cleared.
+     */
+    public static native boolean clear();
+
+    /**
+     * Set input data on offset-th column of feed data
+     *
+     * @param offset the offset-th column of feed data will be set
+     * @param buf    the input data
+     * @param dims   dimension format of the input image
+     * @return true if set successfully
+     */
+    public static native boolean setInput(int offset, int[] dims, float[] buf);
+
+    /**
+     * Set input data on offset-th column of feed data
+     *
+     * @param offset the offset-th column of feed data will be set
+     * @param buf    the input data
+     * @param dims   dimension format of the input image
+     * @return true if set successfully
+     */
+    public static native boolean setInput(int offset, int[] dims, byte[] buf);
+
+    /**
+     * Run the predict model
+     *
+     * @return true if run successfully
+     */
+    public static native boolean run();
+
+    /**
+     * Get offset-th column of output data as float
+     *
+     * @param offset the offset-th column of output data will be returned
+     * @return model predict output
+     */
+    public static native float[] getFloatOutput(int offset);
+
+    /**
+     * Get offset-th column of output data as byte (int8 in C++ side)
+     *
+     * @param offset the offset-th column of output data will be returned
+     * @return model predict output
+     */
+    public static native byte[] getByteOutput(int offset);
+
+    /**
+     * Fetches a Tensor's value as Float data
+     *
+     * @param name Tensor's name
+     * @return values of the Tensor
+     */
+    public static native float[] fetchFloat(String name);
+
+    /**
+     * Fetches a Tensor's value as byte data (int8 at C++ side)
+     *
+     * @param name Tensor's name
+     * @return values of the Tensor
+     */
+    public static native byte[] fetchByte(String name);
+
+    /**
+     * Main function for test
+     */
+    public static void main(String[] args) {
+        System.out.println("Load native library successfully");
+    }
+}

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/java/com/baidu/paddle/lite/Place.java

+/* Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License. */
+
+package com.baidu.paddle.lite;
+
+/**
+ * Place specifies the execution context of a Kernel or input/output for a
+ * kernel. It is used to make the analysis of the MIR more clear and accurate.
+ */
+public class Place {
+    public enum TargetType {
+        UNKNOWN(0), HOST(1), X86(2), CUDA(3), ARM(4), OpenCL(5), Any(6);
+
+        public final int value;
+
+        private TargetType(int value) {
+            this.value = value;
+        }
+    }
+
+    public enum PrecisionType {
+        UNKNOWN(0), FLOAT(1), INT8(2), INT32(3), ANY(4);
+
+        public final int value;
+
+        private PrecisionType(int value) {
+            this.value = value;
+        }
+    }
+
+    public enum DataLayoutType {
+        UNKNOWN(0), NCHW(1), ANY(2);
+
+        public final int value;
+
+        private DataLayoutType(int value) {
+            this.value = value;
+        }
+    }
+
+    public TargetType target;
+    public PrecisionType precision;
+    public DataLayoutType layout;
+    public int device;
+
+    public Place() {
+        target = TargetType.UNKNOWN;
+        precision = PrecisionType.UNKNOWN;
+        layout = DataLayoutType.UNKNOWN;
+        device = 0;
+    }
+
+    public Place(TargetType target) {
+        this(target, PrecisionType.FLOAT);
+    }
+
+    public Place(TargetType target, PrecisionType precision) {
+        this(target, precision, DataLayoutType.NCHW);
+    }
+
+    public Place(TargetType target, PrecisionType precision, DataLayoutType layout) {
+        this(target, precision, layout, 0);
+    }
+
+    public Place(TargetType target, PrecisionType precision, DataLayoutType layout, int device) {
+        this.target = target;
+        this.precision = precision;
+        this.layout = layout;
+        this.device = device;
+    }
+
+    public boolean isValid() {
+        return target != TargetType.UNKNOWN && precision != PrecisionType.UNKNOWN && layout != DataLayoutType.UNKNOWN;
+    }
+
+    public int getTargetInt() {
+        return target.value;
+    }
+
+    public int getPrecisionInt() {
+        return precision.value;
+    }
+
+    public int getDataLayoutInt() {
+        return layout.value;
+    }
+
+    public int getDevice() {
+        return device;
+    }
+
+}

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/res/drawable-v24/ic_launcher_foreground.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillType="evenOdd"
+        android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="78.5885"
+                android:endY="90.9159"
+                android:startX="48.7653"
+                android:startY="61.0927"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/res/drawable/ic_launcher_background.xml

+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#008577"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/res/layout/activity_main.xml

+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <TextView
+        android:id="@+id/text_view"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</android.support.constraint.ConstraintLayout>
\ No newline at end of file

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/res/values/colors.xml

+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#008577</color>
+    <color name="colorPrimaryDark">#00574B</color>
+    <color name="colorAccent">#D81B60</color>
+</resources>

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/res/values/strings.xml

+<resources>
+    <string name="app_name">PaddlePredictor</string>
+</resources>

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/main/res/values/styles.xml

+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+
+</resources>

paddle/fluid/lite/demo/java/android/PaddlePredictor/app/src/test/java/com/baidu/paddle/lite/ExampleUnitTest.java

+package com.baidu.paddle.lite;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file

paddle/fluid/lite/demo/java/android/PaddlePredictor/gradle.properties

+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx1536m
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true

paddle/fluid/lite/demo/java/android/PaddlePredictor/gradle/wrapper/gradle-wrapper.properties

+#Wed Jun 26 10:57:21 CST 2019
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip

paddle/fluid/lite/demo/java/android/PaddlePredictor/gradlew

+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"

paddle/fluid/lite/demo/java/android/PaddlePredictor/gradlew.bat

+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

paddle/fluid/lite/demo/java/android/PaddlePredictor/local.properties

+## This file must *NOT* be checked into Version Control Systems,
+# as it contains information specific to your local configuration.
+#
+# Location of the SDK. This is only used by Gradle.
+# For customization when using a Version Control System, please read the
+# header note.
+#Wed Jun 26 10:57:21 CST 2019
+ndk.dir=/Users/zhenghuihuang/Library/Android/sdk/ndk-bundle
+sdk.dir=/Users/zhenghuihuang/Library/Android/sdk

paddle/fluid/lite/demo/java/android/PaddlePredictor/settings.gradle

+include ':app'