add java android demo (#1454)

android/SherpaOnnxJavaDemo/app/src/main/AndroidManifest.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="com.k2fsa.sherpa.onnx">
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
+
+    <application
+        android:name=".Application"
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SherpaOnnxJavaDemo"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <service
+            android:name=".service.SpeechSherpaRecognitionService"
+            android:exported="false"/>
+    </application>
+
+</manifest>

android/SherpaOnnxJavaDemo/app/src/main/java/com/k2fsa/sherpa/onnx/AppViewModel.java

@@ -0,0 +1,18 @@
+package com.k2fsa.sherpa.onnx;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+public class AppViewModel extends ViewModel {
+    private final MutableLiveData<String> speechRecognitionResult = new MutableLiveData<>();
+
+    public LiveData<String> getSpeechRecognitionResult() {
+        return speechRecognitionResult;
+    }
+
+    public void setSpeechRecognitionResult(String result) {
+        speechRecognitionResult.postValue(result);
+    }
+
+}

android/SherpaOnnxJavaDemo/app/src/main/java/com/k2fsa/sherpa/onnx/Application.java

@@ -0,0 +1,39 @@
+package com.k2fsa.sherpa.onnx;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.lifecycle.ViewModelStore;
+import androidx.lifecycle.ViewModelStoreOwner;
+
+
+public class Application extends android.app.Application implements ViewModelStoreOwner {
+    public static Application sApplication;
+
+
+    private AppViewModel viewModel;
+    private ViewModelStore viewModelStore;
+
+    public static Application getInstance() {
+        return sApplication;
+    }
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        sApplication = this;
+        viewModelStore = new ViewModelStore();
+        viewModel = new ViewModelProvider(this).get(AppViewModel.class);
+    }
+
+    @NonNull
+    @Override
+    public ViewModelStore getViewModelStore() {
+        return viewModelStore;
+    }
+
+    public AppViewModel getViewModel() {
+        return viewModel;
+    }
+
+
+}

android/SherpaOnnxJavaDemo/app/src/main/java/com/k2fsa/sherpa/onnx/MainActivity.java

@@ -0,0 +1,52 @@
+package com.k2fsa.sherpa.onnx;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.content.ContextCompat;
+import androidx.lifecycle.ViewModelProvider;
+
+import android.Manifest;
+import android.content.Intent;
+import android.os.Bundle;
+import android.util.Log;
+import android.widget.TextView;
+
+import com.k2fsa.sherpa.onnx.service.SpeechSherpaRecognitionService;
+
+import pub.devrel.easypermissions.EasyPermissions;
+
+public class MainActivity extends AppCompatActivity {
+    private AppViewModel appViewModel;
+    private TextView tvText;
+    private static final int RC_AUDIO_PERM = 123;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        tvText = findViewById(R.id.text);
+        requestMicrophonePermission();
+    }
+
+
+    private void startSpeechService() {
+        Intent serviceIntent = new Intent(this, SpeechSherpaRecognitionService.class);
+        ContextCompat.startForegroundService(this, serviceIntent);
+        appViewModel = new ViewModelProvider(Application.getInstance()).get(AppViewModel.class);
+        appViewModel.getSpeechRecognitionResult().observe(this, this::handleSpeechRecognitionResult);
+    }
+
+    private void handleSpeechRecognitionResult(String result) {
+        tvText.setText(result);
+    }
+
+    private void requestMicrophonePermission() {
+        String[] perms = {Manifest.permission.RECORD_AUDIO};
+        if (EasyPermissions.hasPermissions(this, perms)) {
+            startSpeechService();
+        } else {
+            EasyPermissions.requestPermissions(MainActivity.this,
+                    "We need access to your microphone for voice recognition",
+                    RC_AUDIO_PERM, perms);
+        }
+    }
+}

android/SherpaOnnxJavaDemo/app/src/main/java/com/k2fsa/sherpa/onnx/OnlineRecognizer.java

@@ -0,0 +1,84 @@
+// Copyright 2022-2023 by zhaoming
+// Copyright 2024 Xiaomi Corporation
+
+package com.k2fsa.sherpa.onnx;
+
+import android.content.res.AssetManager;
+
+public class OnlineRecognizer {
+    static {
+        System.loadLibrary("sherpa-onnx-jni");
+    }
+
+    private long ptr = 0;
+
+    public OnlineRecognizer(OnlineRecognizerConfig config) {
+        ptr = newFromFile(config);
+    }
+
+    public OnlineRecognizer(AssetManager assetManager, OnlineRecognizerConfig config) {
+        ptr = newFromAsset(assetManager, config);
+    }
+
+    public void decode(OnlineStream s) {
+        decode(ptr, s.getPtr());
+    }
+
+    public boolean isReady(OnlineStream s) {
+        return isReady(ptr, s.getPtr());
+    }
+
+    public boolean isEndpoint(OnlineStream s) {
+        return isEndpoint(ptr, s.getPtr());
+    }
+
+    public void reset(OnlineStream s) {
+        reset(ptr, s.getPtr());
+    }
+
+    public OnlineStream createStream() {
+        long p = createStream(ptr, "");
+        return new OnlineStream(p);
+    }
+
+    @Override
+    protected void finalize() throws Throwable {
+        release();
+    }
+
+    // You'd better call it manually if it is not used anymore
+    public void release() {
+        if (this.ptr == 0) {
+            return;
+        }
+        delete(this.ptr);
+        this.ptr = 0;
+    }
+
+    public OnlineRecognizerResult getResult(OnlineStream s) {
+        Object[] arr = getResult(ptr, s.getPtr());
+        String text = (String) arr[0];
+        String[] tokens = (String[]) arr[1];
+        float[] timestamps = (float[]) arr[2];
+        return new OnlineRecognizerResult(text, tokens, timestamps);
+    }
+
+
+    private native void delete(long ptr);
+
+    private native long newFromFile(OnlineRecognizerConfig config);
+
+    private native long newFromAsset(AssetManager assetManager, OnlineRecognizerConfig config);
+
+    private native long createStream(long ptr, String hotwords);
+
+    private native void reset(long ptr, long streamPtr);
+
+    private native void decode(long ptr, long streamPtr);
+
+    private native boolean isEndpoint(long ptr, long streamPtr);
+
+    private native boolean isReady(long ptr, long streamPtr);
+
+    private native Object[] getResult(long ptr, long streamPtr);
+}

android/SherpaOnnxJavaDemo/app/src/main/java/com/k2fsa/sherpa/onnx/service/SpeechSherpaRecognitionService.java

@@ -0,0 +1,250 @@
+package com.k2fsa.sherpa.onnx.service;
+
+import android.Manifest;
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.app.Service;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.res.AssetManager;
+import android.media.AudioFormat;
+import android.media.AudioRecord;
+import android.media.MediaRecorder;
+import android.os.Build;
+import android.os.IBinder;
+import android.text.TextUtils;
+import android.util.Log;
+
+import androidx.core.app.ActivityCompat;
+import androidx.core.app.NotificationCompat;
+
+
+import com.k2fsa.sherpa.onnx.AppViewModel;
+import com.k2fsa.sherpa.onnx.Application;
+
+import com.k2fsa.sherpa.onnx.OnlineModelConfig;
+import com.k2fsa.sherpa.onnx.OnlineRecognizer;
+
+import com.k2fsa.sherpa.onnx.OnlineRecognizerConfig;
+import com.k2fsa.sherpa.onnx.OnlineStream;
+import com.k2fsa.sherpa.onnx.OnlineTransducerModelConfig;
+import com.k2fsa.sherpa.onnx.R;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import java.util.Objects;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+
+public class SpeechSherpaRecognitionService extends Service {
+
+    private AppViewModel appViewModel;
+    private OnlineRecognizer recognizer;
+    private final int sampleRateInHz = 16000;
+
+    private Thread recordingThread;
+    private boolean isRecording = false;
+    private int audioSource = MediaRecorder.AudioSource.MIC;
+    private int channelConfig = AudioFormat.CHANNEL_IN_MONO;
+    private int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
+    private AudioRecord audioRecord;
+    private int idx = 0;
+    private String lastText = "";
+    private ExecutorService executor;
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        startForegroundService();
+        // 获取 ViewModel
+        appViewModel = Application.getInstance().getViewModel();
+        int numBytes = AudioRecord.getMinBufferSize(sampleRateInHz, channelConfig, audioFormat);
+
+        audioRecord = new AudioRecord(
+                audioSource,
+                sampleRateInHz,
+                channelConfig,
+                audioFormat,
+                numBytes * 2 // a sample has two bytes as we are using 16-bit PCM
+        );
+        executor = Executors.newSingleThreadExecutor();
+        executor.execute(this::initializeSherpa);
+    }
+
+
+    private void initializeSherpa() {
+        Log.d("Current Directory", System.getProperty("user.dir"));
+        String modelDir = "sherpa-onnx-streaming-zipformer-zh-14M-2023-02-23";
+        initializeSherpaDir(modelDir, modelDir);
+        OnlineTransducerModelConfig onlineTransducerModelConfig = OnlineTransducerModelConfig.builder()
+                .setEncoder(modelDir + "/encoder-epoch-99-avg-1.int8.onnx")
+                .setDecoder(modelDir + "/decoder-epoch-99-avg-1.onnx")
+                .setJoiner(modelDir + "/joiner-epoch-99-avg-1.int8.onnx")
+                .build();
+
+        OnlineModelConfig onlineModelConfig = OnlineModelConfig.builder()
+                .setTransducer(onlineTransducerModelConfig)
+                .setTokens(modelDir + "/tokens.txt")
+                .setModelType("zipformer")
+                .build();
+        OnlineRecognizerConfig config = OnlineRecognizerConfig.builder()
+                .setOnlineModelConfig(onlineModelConfig)
+                .build();
+        recognizer = new OnlineRecognizer(getAssets(), config);
+
+        audioRecord.startRecording();
+        startRecognition();
+    }
+
+    private void startRecognition() {
+        isRecording = true;
+        recordingThread = new Thread(this::processSamples);
+        recordingThread.start();
+    }
+
+    private void processSamples() {
+        OnlineStream stream = recognizer.createStream();
+        double interval = 0.1;
+        int bufferSize = (int) (interval * sampleRateInHz);
+        short[] buffer = new short[bufferSize];
+
+        while (isRecording) {
+            int ret = audioRecord != null ? audioRecord.read(buffer, 0, buffer.length) : -1;
+            if (ret > 0) {
+                float[] samples = new float[ret];
+                for (int i = 0; i < ret; i++) {
+                    samples[i] = buffer[i] / 32768.0f;
+                }
+                stream.acceptWaveform(samples, sampleRateInHz);
+                while (recognizer.isReady(stream)) {
+                    recognizer.decode(stream);
+                }
+
+                boolean isEndpoint = recognizer.isEndpoint(stream);
+                String text = recognizer.getResult(stream).getText();
+                if (isEndpoint) {
+                    float[] tailPaddings = new float[(int) (0.8 * sampleRateInHz)];
+                    stream.acceptWaveform(tailPaddings, sampleRateInHz);
+                    while (recognizer.isReady(stream)) {
+                        recognizer.decode(stream);
+                    }
+                    text = recognizer.getResult(stream).getText();
+                }
+
+                String textToDisplay = lastText;
+
+                if (!TextUtils.isEmpty(text)) {
+                    textToDisplay = TextUtils.isEmpty(text) ? idx + ": " + text : lastText + "\n" + idx + ": " + text;
+                }
+
+                if (isEndpoint) {
+                    recognizer.reset(stream);
+                    if (!TextUtils.isEmpty(text)) {
+                        lastText = lastText + "\n" + idx + ": " + text;
+                        textToDisplay = lastText;
+                        idx += 1;
+                    }
+                    appViewModel.setSpeechRecognitionResult(textToDisplay);
+                }
+            }
+
+        }
+        stream.release();
+
+    }
+
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+
+        return START_STICKY;
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        audioRecord.stop();
+        audioRecord.release();
+        executor.shutdown();
+        stopForeground(true);
+    }
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+
+
+    private void startForegroundService() {
+        String channelId = createNotificationChannel();
+
+        Notification notification = new NotificationCompat.Builder(this, channelId)
+                .setContentTitle("Foreground Service")
+                .setContentText("Running in the foreground")
+                .setSmallIcon(R.drawable.ic_bg_mic_24)
+                .build();
+
+        startForeground(1, notification);
+    }
+
+    // 创建通知渠道 (针对 Android 8.0 及以上版本)
+    private String createNotificationChannel() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            String channelId = "speech_channel";
+            String channelName = "Speech Channel";
+            NotificationChannel channel = new NotificationChannel(channelId, channelName, NotificationManager.IMPORTANCE_LOW);
+            NotificationManager manager = getSystemService(NotificationManager.class);
+            if (manager != null) {
+                manager.createNotificationChannel(channel);
+            }
+            return channelId;
+        } else {
+            return "";
+        }
+    }
+
+    private void initializeSherpaDir(String assetDir, String internalDir) {
+        AssetManager assetManager = getAssets();
+        File outDir = new File(getFilesDir(), internalDir);
+
+        if (!outDir.exists()) {
+            outDir.mkdirs();
+        }
+
+        try {
+            String[] assets = assetManager.list(assetDir);
+            if (assets != null) {
+                for (String asset : assets) {
+                    String assetPath = assetDir.isEmpty() ? asset : assetDir + "/" + asset;
+                    File outFile = new File(outDir, asset);
+                    if (Objects.requireNonNull(assetManager.list(assetPath)).length > 0) {
+                        outFile.mkdirs();
+                        initializeSherpaDir(assetPath, internalDir + "/" + asset); // 递归复制子目录
+                    } else {
+                        InputStream in = assetManager.open(assetPath);
+                        OutputStream out = new FileOutputStream(outFile);
+
+                        byte[] buffer = new byte[1024];
+                        int read;
+                        while ((read = in.read(buffer)) != -1) {
+                            out.write(buffer, 0, read);
+                        }
+
+                        in.close();
+                        out.flush();
+                        out.close();
+                    }
+                }
+            }
+        } catch (IOException e) {
+            Log.e("ModelCopy", "Failed to copy assets", e);
+        }
+    }
+}

android/SherpaOnnxJavaDemo/app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,30 @@
+<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:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                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="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

android/SherpaOnnxJavaDemo/app/src/main/res/drawable/ic_bg_mic_24.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#000000"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M12,14c1.66,0 2.99,-1.34 2.99,-3L15,5c0,-1.66 -1.34,-3 -3,-3S9,3.34 9,5v6c0,1.66 1.34,3 3,3zM17.3,11c0,3 -2.54,5.1 -5.3,5.1S6.7,14 6.7,11L5,11c0,3.41 2.72,6.23 6,6.72L11,21h2v-3.28c3.28,-0.48 6,-3.3 6,-6.72h-1.7z"/>
+</vector>

android/SherpaOnnxJavaDemo/app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,170 @@
+<?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="#3DDC84"
+        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>

android/SherpaOnnxJavaDemo/app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.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"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

android/SherpaOnnxJavaDemo/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?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>

android/SherpaOnnxJavaDemo/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?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>

android/SherpaOnnxJavaDemo/app/src/main/res/values-night/themes.xml

@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SherpaOnnxJavaDemo" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>

android/SherpaOnnxJavaDemo/app/src/main/res/values/colors.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>

android/SherpaOnnxJavaDemo/app/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SherpaOnnxJavaDemo</string>
+</resources>

android/SherpaOnnxJavaDemo/app/src/main/res/values/themes.xml

@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SherpaOnnxJavaDemo" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>

android/SherpaOnnxJavaDemo/app/src/main/res/xml/backup_rules.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older that API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>

android/SherpaOnnxJavaDemo/app/src/main/res/xml/data_extraction_rules.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>