Wikitude

Hello Wikitude Support !!
I have a problem with the live camera when I use your Sample and my application.
The live camera does not appear, I just have a black background but when I look at my image tracker this one works but I don't see what I'm looking at.
I have no errors in the code.
I joined you my project.

Thank you for your help

Best regards

Android Manifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="wikitude.wikitudedemo">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_GPS" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-feature android:name="android.hardware.camera" android:required="true" />
    <uses-feature android:name="android.hardware.location" android:required="true" />
    <uses-feature android:name="android.hardware.sensor.accelerometer" android:required="true" />
    <uses-feature android:name="android.hardware.sensor.compass" android:required="true" />
    <uses-feature android:glEsVersion="0x00020000" android:required="true" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        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>

  Gradle App

apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    defaultConfig {
        applicationId "wikitude.wikitudedemo"
        minSdkVersion 22
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation files('libs/wikitudesdk.aar')
    androidTestImplementation fileTree(include: ['*.pom'], dir: 'libs')
    testImplementation fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:24.2.1'
}

 Main

package wikitude.wikitudedemo;

import android.app.Activity;
import android.hardware.Camera;
import android.os.Bundle;
import java.io.IOException;
import com.wikitude.architect.ArchitectStartupConfiguration;
import com.wikitude.architect.WearableArchitectView;

public class MainActivity extends Activity {

    private WearableArchitectView architectView;

    @Override
    protected void onPostCreate(final Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        architectView.onPostCreate();

        try {
            architectView.load("index.html");
        }catch (IOException e){
            e.printStackTrace();
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        architectView = new WearableArchitectView(this);
        ArchitectStartupConfiguration configuration = new ArchitectStartupConfiguration();
        configuration.setLicenseKey("2F40U/M96j4r6kbDJxSZtmu21Ue39TjMImJJrSY/4PBmXpXXCHiWLVyJMeIouODKzgZopK6BdWnPlAybo3Y5ccKZoqv2yoaRSri+38e6ORkyhVqrvn5g5RDBFg79h2ykm31ZOvlNSH9ohwU9dgQgk7gXIVPeuG2jxpo1+VAESuRTYWx0ZWRfX6FAccwFGifIuaPv8Wv07BRiZlLI/ANcanfHUMcN2DqSpc+paOi7inK5bSeW7l8cCFQA+UONJn7xLJnNqP/u2CdhJO5wPcxygb/NAN+0z+hiJlahwqS6mGIwVB5BnUJS/0YYZYfSA2tshmnRSyP9kb/xsyVQl8bhFLE+Fs1PX59vBYa8bhMVpG7aJiFQLq1JU7KYndKp4MMKUDjKICIT094Px//CAbKB5jXBuh1GmGndzNm0VBZbgNiF3iIV0e83wyFaWg34W63aNNX2qGd0VWv8rakacVJjBjoBNFw0EDZQMaQqR1PFSS2jg1rApQ325bZMXFKJefYXu9/5D4reNsErQT9tMDCFq4jt7HaFPqYLH+YNTEOakG13VyNdI5lA2Fwmk9Glt9SDJucllIeaoZ2yCvhLkgIqMVQ6adYm4/GFzsYUi5ouvK84S6fW69ErgoyhxlCuktB1FY5/4V7R5xzznOrEUbTGLfFmE9TCTEIFcqQy1P7t2Bo=");
        architectView.onCreate(configuration);
        setContentView(architectView);
    }

    @Override
    protected void onResume(){
        super.onResume();
        architectView.onResume();
    }

    @Override
    protected void onPause(){
        super.onPause();
        architectView.onPause();
    }

    @Override
    protected void onDestroy(){
        super.onDestroy();
        architectView.onDestroy();
    }
}

 

Hi Eva

Sorry but I start in the development of Android so can you tell me where to activate the camera because I followed your tutorial but without good result
I tried to created a Layout but I have an errors

E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: wikitude.wikitudedemo, PID: 7203
                  java.lang.RuntimeException: Unable to start activity ComponentInfo{wikitude.wikitudedemo/wikitude.wikitudedemo.MainActivity}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
                      at android.app.ActivityThread.access$800(ActivityThread.java:151)
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
                      at android.os.Handler.dispatchMessage(Handler.java:102)
                      at android.os.Looper.loop(Looper.java:135)
                      at android.app.ActivityThread.main(ActivityThread.java:5258)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at java.lang.reflect.Method.invoke(Method.java:372)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
                   Caused by: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
                      at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:302)
                      at android.app.Activity.requestWindowFeature(Activity.java:3605)
                      at wikitude.wikitudedemo.MainActivity.onCreate(MainActivity.java:47)
                      at android.app.Activity.performCreate(Activity.java:5994)
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) 
                      at android.app.ActivityThread.access$800(ActivityThread.java:151) 
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) 
                      at android.os.Handler.dispatchMessage(Handler.java:102) 
                      at android.os.Looper.loop(Looper.java:135) 
                      at android.app.ActivityThread.main(ActivityThread.java:5258) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at java.lang.reflect.Method.invoke(Method.java:372) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 

 New main

package wikitude.wikitudedemo;

import android.app.Activity;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.Window;
import android.view.WindowManager;

import java.io.IOException;
import com.wikitude.architect.ArchitectStartupConfiguration;
import com.wikitude.architect.WearableArchitectView;

public class MainActivity extends Activity implements SurfaceHolder.Callback {

    private WearableArchitectView architectView;

    private Camera camera;
    private SurfaceView surfaceCamera;
    private Boolean isPreview;

    @Override
    protected void onPostCreate(final Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        architectView.onPostCreate();

        try {
            architectView.load("index.html");
        }catch (IOException e){
            e.printStackTrace();
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        architectView = new WearableArchitectView(this);
        ArchitectStartupConfiguration configuration = new ArchitectStartupConfiguration();
        configuration.setLicenseKey("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");
        architectView.onCreate(configuration);
        setContentView(architectView);
        getWindow().setFormat(PixelFormat.TRANSLUCENT);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        isPreview = false;
        setContentView(R.layout.layout);
        surfaceCamera = (SurfaceView) findViewById(R.id.surfaceViewCamera);
        InitializeCamera();
    }

    @Override
    protected void onResume(){
        super.onResume();
        architectView.onResume();
        camera = Camera.open();
    }

    @Override
    protected void onPause(){
        super.onPause();
        architectView.onPause();
    }

    @Override
    protected void onDestroy(){
        super.onDestroy();
        architectView.onDestroy();
    }

    public void InitializeCamera() {
        surfaceCamera.getHolder().addCallback(this);
        surfaceCamera.getHolder().setType(
                SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        if (camera == null)
            camera = Camera.open();
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width,
                               int height) {
        if (isPreview) {
            camera.stopPreview();
        }
        Camera.Parameters parameters = camera.getParameters();
        parameters.setPreviewSize(width, height);
        camera.setParameters(parameters);

        try {
            camera.setPreviewDisplay(surfaceCamera.getHolder());
        } catch (IOException e) {
        }
        camera.startPreview();

        isPreview = true;
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        if (camera != null) {
            camera.stopPreview();
            isPreview = false;
            camera.release();
        }
    }
}

 

Thanks

 

So I checked and remade my soft, the camera is activated because this one works before I add the wikitude SDK in the same project
My Code

import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.ImageFormat;
import android.graphics.SurfaceTexture;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraCaptureSession;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CameraDevice;
import android.hardware.camera2.CameraManager;
import android.hardware.camera2.CameraMetadata;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.TotalCaptureResult;
import android.hardware.camera2.params.StreamConfigurationMap;
import android.media.Image;
import android.media.ImageReader;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.HandlerThread;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.util.Size;
import android.util.SparseIntArray;
import android.view.Surface;
import android.view.TextureView;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.inducesmile.androidcameraapi2.R;
import com.wikitude.architect.ArchitectStartupConfiguration;
import com.wikitude.architect.WearableArchitectView;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    private static final String TAG = "AndroidCameraApi";
    private Button takePictureButton;
    private TextureView textureView;
    private static final SparseIntArray ORIENTATIONS = new SparseIntArray();
    static {
        ORIENTATIONS.append(Surface.ROTATION_0, 90);
        ORIENTATIONS.append(Surface.ROTATION_90, 0);
        ORIENTATIONS.append(Surface.ROTATION_180, 270);
        ORIENTATIONS.append(Surface.ROTATION_270, 180);
    }
    private String cameraId;
    protected CameraDevice cameraDevice;
    protected CameraCaptureSession cameraCaptureSessions;
    protected CaptureRequest captureRequest;
    protected CaptureRequest.Builder captureRequestBuilder;
    private Size imageDimension;
    private ImageReader imageReader;
    private File file;
    private static final int REQUEST_CAMERA_PERMISSION = 200;
    private boolean mFlashSupported;
    private Handler mBackgroundHandler;
    private HandlerThread mBackgroundThread;
    private WearableArchitectView architectView;

    @Override
    protected void onPostCreate(final Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        architectView.onPostCreate();
        try {
            architectView.load("index.html");
        }catch (IOException e){
            e.printStackTrace();
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textureView = (TextureView) findViewById(R.id.texture);
        assert textureView != null;
        textureView.setSurfaceTextureListener(textureListener);
        takePictureButton = (Button) findViewById(R.id.btn_takepicture);
        assert takePictureButton != null;
        takePictureButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                takePicture();
            }
        });
        architectView = new WearableArchitectView(this);
        ArchitectStartupConfiguration configuration = new ArchitectStartupConfiguration();
        configuration.setLicenseKey("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");
        architectView.onCreate(configuration);
        setContentView(architectView);
    }
    TextureView.SurfaceTextureListener textureListener = new TextureView.SurfaceTextureListener() {
        @Override
        public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
            //open your camera here
            openCamera();
        }
        @Override
        public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
            // Transform you image captured size according to the surface width and height
        }
        @Override
        public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
            return false;
        }
        @Override
        public void onSurfaceTextureUpdated(SurfaceTexture surface) {
        }
    };
    private final CameraDevice.StateCallback stateCallback = new CameraDevice.StateCallback() {
        @Override
        public void onOpened(CameraDevice camera) {
            //This is called when the camera is open
            Log.e(TAG, "onOpened");
            cameraDevice = camera;
            createCameraPreview();
        }
        @Override
        public void onDisconnected(CameraDevice camera) {
            cameraDevice.close();
        }
        @Override
        public void onError(CameraDevice camera, int error) {
            cameraDevice.close();
            cameraDevice = null;
        }
    };
    final CameraCaptureSession.CaptureCallback captureCallbackListener = new CameraCaptureSession.CaptureCallback() {
        @Override
        public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request, TotalCaptureResult result) {
            super.onCaptureCompleted(session, request, result);
            Toast.makeText(MainActivity.this, "Saved:" + file, Toast.LENGTH_SHORT).show();
            createCameraPreview();
        }
    };
    protected void startBackgroundThread() {
        mBackgroundThread = new HandlerThread("Camera Background");
        mBackgroundThread.start();
        mBackgroundHandler = new Handler(mBackgroundThread.getLooper());
    }
    protected void stopBackgroundThread() {
        mBackgroundThread.quitSafely();
        try {
            mBackgroundThread.join();
            mBackgroundThread = null;
            mBackgroundHandler = null;
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
    protected void takePicture() {
        if(null == cameraDevice) {
            Log.e(TAG, "cameraDevice is null");
            return;
        }
        CameraManager manager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
        try {
            CameraCharacteristics characteristics = manager.getCameraCharacteristics(cameraDevice.getId());
            Size[] jpegSizes = null;
            if (characteristics != null) {
                jpegSizes = characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP).getOutputSizes(ImageFormat.JPEG);
            }
            int width = 640;
            int height = 480;
            if (jpegSizes != null && 0 < jpegSizes.length) {
                width = jpegSizes[0].getWidth();
                height = jpegSizes[0].getHeight();
            }
            ImageReader reader = ImageReader.newInstance(width, height, ImageFormat.JPEG, 1);
            List<Surface> outputSurfaces = new ArrayList<Surface>(2);
            outputSurfaces.add(reader.getSurface());
            outputSurfaces.add(new Surface(textureView.getSurfaceTexture()));
            final CaptureRequest.Builder captureBuilder = cameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
            captureBuilder.addTarget(reader.getSurface());
            captureBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.CONTROL_MODE_AUTO);
            // Orientation
            int rotation = getWindowManager().getDefaultDisplay().getRotation();
            captureBuilder.set(CaptureRequest.JPEG_ORIENTATION, ORIENTATIONS.get(rotation));
            final File file = new File(Environment.getExternalStorageDirectory()+"/pic.jpg");
            ImageReader.OnImageAvailableListener readerListener = new ImageReader.OnImageAvailableListener() {
                @Override
                public void onImageAvailable(ImageReader reader) {
                    Image image = null;
                    try {
                        image = reader.acquireLatestImage();
                        ByteBuffer buffer = image.getPlanes()[0].getBuffer();
                        byte[] bytes = new byte[buffer.capacity()];
                        buffer.get(bytes);
                        save(bytes);
                    } catch (FileNotFoundException e) {
                        e.printStackTrace();
                    } catch (IOException e) {
                        e.printStackTrace();
                    } finally {
                        if (image != null) {
                            image.close();
                        }
                    }
                }
                private void save(byte[] bytes) throws IOException {
                    OutputStream output = null;
                    try {
                        output = new FileOutputStream(file);
                        output.write(bytes);
                    } finally {
                        if (null != output) {
                            output.close();
                        }
                    }
                }
            };
            reader.setOnImageAvailableListener(readerListener, mBackgroundHandler);
            final CameraCaptureSession.CaptureCallback captureListener = new CameraCaptureSession.CaptureCallback() {
                @Override
                public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request, TotalCaptureResult result) {
                    super.onCaptureCompleted(session, request, result);
                    Toast.makeText(MainActivity.this, "Saved:" + file, Toast.LENGTH_SHORT).show();
                    createCameraPreview();
                }
            };
            cameraDevice.createCaptureSession(outputSurfaces, new CameraCaptureSession.StateCallback() {
                @Override
                public void onConfigured(CameraCaptureSession session) {
                    try {
                        session.capture(captureBuilder.build(), captureListener, mBackgroundHandler);
                    } catch (CameraAccessException e) {
                        e.printStackTrace();
                    }
                }
                @Override
                public void onConfigureFailed(CameraCaptureSession session) {
                }
            }, mBackgroundHandler);
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
    }
    protected void createCameraPreview() {
        try {
            SurfaceTexture texture = textureView.getSurfaceTexture();
            assert texture != null;
            texture.setDefaultBufferSize(imageDimension.getWidth(), imageDimension.getHeight());
            Surface surface = new Surface(texture);
            captureRequestBuilder = cameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
            captureRequestBuilder.addTarget(surface);
            cameraDevice.createCaptureSession(Arrays.asList(surface), new CameraCaptureSession.StateCallback(){
                @Override
                public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) {
                    //The camera is already closed
                    if (null == cameraDevice) {
                        return;
                    }
                    // When the session is ready, we start displaying the preview.
                    cameraCaptureSessions = cameraCaptureSession;
                    updatePreview();
                }
                @Override
                public void onConfigureFailed(@NonNull CameraCaptureSession cameraCaptureSession) {
                    Toast.makeText(MainActivity.this, "Configuration change", Toast.LENGTH_SHORT).show();
                }
            }, null);
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
    }
    private void openCamera() {
        CameraManager manager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
        Log.e(TAG, "is camera open");
        try {
            cameraId = manager.getCameraIdList()[0];
            CameraCharacteristics characteristics = manager.getCameraCharacteristics(cameraId);
            StreamConfigurationMap map = characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
            assert map != null;
            imageDimension = map.getOutputSizes(SurfaceTexture.class)[0];
            // Add permission for camera and let user grant the permission
            if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
                ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUEST_CAMERA_PERMISSION);
                return;
            }
            manager.openCamera(cameraId, stateCallback, null);
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
        Log.e(TAG, "openCamera X");
    }
    protected void updatePreview() {
        if(null == cameraDevice) {
            Log.e(TAG, "updatePreview error, return");
        }
        captureRequestBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.CONTROL_MODE_AUTO);
        try {
            cameraCaptureSessions.setRepeatingRequest(captureRequestBuilder.build(), null, mBackgroundHandler);
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
    }
    private void closeCamera() {
        if (null != cameraDevice) {
            cameraDevice.close();
            cameraDevice = null;
        }
        if (null != imageReader) {
            imageReader.close();
            imageReader = null;
        }
    }
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        if (requestCode == REQUEST_CAMERA_PERMISSION) {
            if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
                // close the app
                Toast.makeText(MainActivity.this, "Sorry!!!, you can't use this app without granting permission", Toast.LENGTH_LONG).show();
                finish();
            }
        }
    }
    @Override
    protected void onResume() {
        super.onResume();
        architectView.onResume();
        Log.e(TAG, "onResume");
        startBackgroundThread();
        if (textureView.isAvailable()) {
            openCamera();
        } else {
            textureView.setSurfaceTextureListener(textureListener);
        }
    }
    @Override
    protected void onPause() {
        Log.e(TAG, "onPause");
        closeCamera();
        stopBackgroundThread();
        super.onPause();
        architectView.onPause();
    }
}