diff --git a/res/layout-land/adb_qrcode_scanner_fragment.xml b/res/layout-land/adb_qrcode_scanner_fragment.xml
index 6451551..a2c0110 100644
--- a/res/layout-land/adb_qrcode_scanner_fragment.xml
+++ b/res/layout-land/adb_qrcode_scanner_fragment.xml
@@ -45,7 +45,7 @@
                     android:id="@+id/preview_view"
                     android:layout_width="wrap_content"
                     android:layout_height="match_parent"/>
-                <com.android.settings.wifi.qrcode.QrDecorateView
+                <com.android.settingslib.qrcode.QrDecorateView
                     android:id="@+id/decorate_view"
                     android:layout_width="wrap_content"
                     android:layout_height="match_parent"/>
diff --git a/res/layout-land/wifi_dpp_qrcode_scanner_fragment.xml b/res/layout-land/wifi_dpp_qrcode_scanner_fragment.xml
index 7428749..11bb0ae 100644
--- a/res/layout-land/wifi_dpp_qrcode_scanner_fragment.xml
+++ b/res/layout-land/wifi_dpp_qrcode_scanner_fragment.xml
@@ -44,7 +44,7 @@
                     android:id="@+id/preview_view"
                     android:layout_width="wrap_content"
                     android:layout_height="match_parent"/>
-                <com.android.settings.wifi.qrcode.QrDecorateView
+                <com.android.settingslib.qrcode.QrDecorateView
                     android:id="@+id/decorate_view"
                     android:layout_width="wrap_content"
                     android:layout_height="match_parent"/>
diff --git a/res/layout/adb_qrcode_scanner_fragment.xml b/res/layout/adb_qrcode_scanner_fragment.xml
index 7823155..98c2122 100644
--- a/res/layout/adb_qrcode_scanner_fragment.xml
+++ b/res/layout/adb_qrcode_scanner_fragment.xml
@@ -45,7 +45,7 @@
                     android:id="@+id/preview_view"
                     android:layout_width="match_parent"
                     android:layout_height="@dimen/qrcode_preview_size"/>
-                <com.android.settings.wifi.qrcode.QrDecorateView
+                <com.android.settingslib.qrcode.QrDecorateView
                     android:id="@+id/decorate_view"
                     android:layout_width="match_parent"
                     android:layout_height="@dimen/qrcode_preview_size"/>
diff --git a/res/layout/wifi_dpp_qrcode_scanner_fragment.xml b/res/layout/wifi_dpp_qrcode_scanner_fragment.xml
index 380fc8a..dd96d7e 100644
--- a/res/layout/wifi_dpp_qrcode_scanner_fragment.xml
+++ b/res/layout/wifi_dpp_qrcode_scanner_fragment.xml
@@ -44,7 +44,7 @@
                     android:id="@+id/preview_view"
                     android:layout_width="match_parent"
                     android:layout_height="@dimen/qrcode_preview_size"/>
-                <com.android.settings.wifi.qrcode.QrDecorateView
+                <com.android.settingslib.qrcode.QrDecorateView
                     android:id="@+id/decorate_view"
                     android:layout_width="match_parent"
                     android:layout_height="@dimen/qrcode_preview_size"/>
diff --git a/src/com/android/settings/development/AdbQrcodeScannerFragment.java b/src/com/android/settings/development/AdbQrcodeScannerFragment.java
index d53f649..afbb8e4 100644
--- a/src/com/android/settings/development/AdbQrcodeScannerFragment.java
+++ b/src/com/android/settings/development/AdbQrcodeScannerFragment.java
@@ -48,8 +48,8 @@
 import com.android.settings.wifi.dpp.AdbQrCode;
 import com.android.settings.wifi.dpp.WifiDppQrCodeBaseFragment;
 import com.android.settings.wifi.dpp.WifiNetworkConfig;
-import com.android.settings.wifi.qrcode.QrCamera;
-import com.android.settings.wifi.qrcode.QrDecorateView;
+import com.android.settingslib.qrcode.QrCamera;
+import com.android.settingslib.qrcode.QrDecorateView;
 
 import com.google.android.setupdesign.util.ThemeHelper;
 
diff --git a/src/com/android/settings/wifi/dpp/WifiDppQrCodeScannerFragment.java b/src/com/android/settings/wifi/dpp/WifiDppQrCodeScannerFragment.java
index 528fbc3..f313f6b 100644
--- a/src/com/android/settings/wifi/dpp/WifiDppQrCodeScannerFragment.java
+++ b/src/com/android/settings/wifi/dpp/WifiDppQrCodeScannerFragment.java
@@ -56,8 +56,8 @@
 
 import com.android.settings.R;
 import com.android.settings.overlay.FeatureFactory;
-import com.android.settings.wifi.qrcode.QrCamera;
-import com.android.settings.wifi.qrcode.QrDecorateView;
+import com.android.settingslib.qrcode.QrCamera;
+import com.android.settingslib.qrcode.QrDecorateView;
 import com.android.wifitrackerlib.WifiEntry;
 import com.android.wifitrackerlib.WifiPickerTracker;
 
diff --git a/src/com/android/settings/wifi/qrcode/QrCamera.java b/src/com/android/settings/wifi/qrcode/QrCamera.java
deleted file mode 100644
index d07c543..0000000
--- a/src/com/android/settings/wifi/qrcode/QrCamera.java
+++ /dev/null
@@ -1,482 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * 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.android.settings.wifi.qrcode;
-
-import android.content.Context;
-import android.content.res.Configuration;
-import android.graphics.Matrix;
-import android.graphics.Rect;
-import android.graphics.SurfaceTexture;
-import android.hardware.Camera;
-import android.hardware.Camera.CameraInfo;
-import android.hardware.Camera.Parameters;
-import android.os.AsyncTask;
-import android.os.Handler;
-import android.os.Message;
-import android.util.ArrayMap;
-import android.util.Log;
-import android.util.Size;
-import android.view.Surface;
-import android.view.WindowManager;
-
-import androidx.annotation.VisibleForTesting;
-
-import com.google.zxing.BarcodeFormat;
-import com.google.zxing.BinaryBitmap;
-import com.google.zxing.DecodeHintType;
-import com.google.zxing.MultiFormatReader;
-import com.google.zxing.ReaderException;
-import com.google.zxing.Result;
-import com.google.zxing.common.HybridBinarizer;
-
-import java.io.IOException;
-import java.lang.ref.WeakReference;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.Executors;
-import java.util.concurrent.Semaphore;
-
-/**
- * Manage the camera for the QR scanner and help the decoder to get the image inside the scanning
- * frame. Caller prepares a {@link SurfaceTexture} then call {@link #start(SurfaceTexture)} to
- * start QR Code scanning. The scanning result will return by ScannerCallback interface. Caller
- * can also call {@link #stop()} to halt QR Code scanning before the result returned.
- */
-public class QrCamera extends Handler {
-    private static final String TAG = "QrCamera";
-
-    private static final int MSG_AUTO_FOCUS = 1;
-
-    /**
-     * The max allowed difference between picture size ratio and preview size ratio.
-     * Uses to filter the picture sizes of similar preview size ratio, for example, if a preview
-     * size is 1920x1440, MAX_RATIO_DIFF 0.1 could allow picture size of 720x480 or 352x288 or
-     * 176x44 but not 1920x1080.
-     */
-    private static final double MAX_RATIO_DIFF = 0.1;
-
-    private static final long AUTOFOCUS_INTERVAL_MS = 1500L;
-
-    private static Map<DecodeHintType, List<BarcodeFormat>> HINTS = new ArrayMap<>();
-    private static List<BarcodeFormat> FORMATS = new ArrayList<>();
-
-    static {
-        FORMATS.add(BarcodeFormat.QR_CODE);
-        HINTS.put(DecodeHintType.POSSIBLE_FORMATS, FORMATS);
-    }
-
-    @VisibleForTesting
-    Camera mCamera;
-    private Size mPreviewSize;
-    private WeakReference<Context> mContext;
-    private ScannerCallback mScannerCallback;
-    private MultiFormatReader mReader;
-    private DecodingTask mDecodeTask;
-    private int mCameraOrientation;
-    @VisibleForTesting
-    Camera.Parameters mParameters;
-
-    public QrCamera(Context context, ScannerCallback callback) {
-        mContext =  new WeakReference<Context>(context);
-        mScannerCallback = callback;
-        mReader = new MultiFormatReader();
-        mReader.setHints(HINTS);
-    }
-
-    /**
-     * The function start camera preview and capture pictures to decode QR code continuously in a
-     * background task.
-     *
-     * @param surface The surface to be used for live preview.
-     */
-    public void start(SurfaceTexture surface) {
-        if (mDecodeTask == null) {
-            mDecodeTask = new DecodingTask(surface);
-            // Execute in the separate thread pool to prevent block other AsyncTask.
-            mDecodeTask.executeOnExecutor(Executors.newSingleThreadExecutor());
-        }
-    }
-
-    /**
-     * The function stop camera preview and background decode task. Caller call this function when
-     * the surface is being destroyed.
-     */
-    public void stop() {
-        removeMessages(MSG_AUTO_FOCUS);
-        if (mDecodeTask != null) {
-            mDecodeTask.cancel(true);
-            mDecodeTask = null;
-        }
-        if (mCamera != null) {
-            mCamera.stopPreview();
-            releaseCamera();
-        }
-    }
-
-    /** The scanner which includes this QrCamera class should implement this */
-    public interface ScannerCallback {
-
-        /**
-         * The function used to handle the decoding result of the QR code.
-         *
-         * @param result the result QR code after decoding.
-         */
-        void handleSuccessfulResult(String result);
-
-        /** Request the QR code scanner to handle the failure happened. */
-        void handleCameraFailure();
-
-        /**
-         * The function used to get the background View size.
-         *
-         * @return Includes the background view size.
-         */
-        Size getViewSize();
-
-        /**
-         * The function used to get the frame position inside the view
-         *
-         * @param previewSize Is the preview size set by camera
-         * @param cameraOrientation Is the orientation of current Camera
-         * @return The rectangle would like to crop from the camera preview shot.
-         */
-        Rect getFramePosition(Size previewSize, int cameraOrientation);
-
-        /**
-         * Sets the transform to associate with preview area.
-         *
-         * @param transform The transform to apply to the content of preview
-         */
-        void setTransform(Matrix transform);
-
-        /**
-         * Verify QR code is valid or not. The camera will stop scanning if this callback returns
-         * true.
-         *
-         * @param qrCode The result QR code after decoding.
-         * @return Returns true if qrCode hold valid information.
-         */
-        boolean isValid(String qrCode);
-    }
-
-    @VisibleForTesting
-    void setCameraParameter() {
-        mParameters = mCamera.getParameters();
-        mPreviewSize = getBestPreviewSize(mParameters);
-        mParameters.setPreviewSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());
-        Size pictureSize = getBestPictureSize(mParameters);
-        mParameters.setPictureSize(pictureSize.getWidth(), pictureSize.getHeight());
-
-        final List<String> supportedFlashModes = mParameters.getSupportedFlashModes();
-        if (supportedFlashModes != null &&
-                supportedFlashModes.contains(Parameters.FLASH_MODE_OFF)) {
-            mParameters.setFlashMode(Parameters.FLASH_MODE_OFF);
-        }
-
-        final List<String> supportedFocusModes = mParameters.getSupportedFocusModes();
-        if (supportedFocusModes.contains(Parameters.FOCUS_MODE_CONTINUOUS_PICTURE)) {
-            mParameters.setFocusMode(Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
-        } else if (supportedFocusModes.contains(Parameters.FOCUS_MODE_AUTO)) {
-            mParameters.setFocusMode(Parameters.FOCUS_MODE_AUTO);
-        }
-        mCamera.setParameters(mParameters);
-    }
-
-    private boolean startPreview() {
-        if (mContext.get() == null) {
-            return false;
-        }
-
-        final WindowManager winManager =
-                (WindowManager) mContext.get().getSystemService(Context.WINDOW_SERVICE);
-        final int rotation = winManager.getDefaultDisplay().getRotation();
-        int degrees = 0;
-        switch (rotation) {
-            case Surface.ROTATION_0:
-                degrees = 0;
-                break;
-            case Surface.ROTATION_90:
-                degrees = 90;
-                break;
-            case Surface.ROTATION_180:
-                degrees = 180;
-                break;
-            case Surface.ROTATION_270:
-                degrees = 270;
-                break;
-        }
-        final int rotateDegrees = (mCameraOrientation - degrees + 360) % 360;
-        mCamera.setDisplayOrientation(rotateDegrees);
-        mCamera.startPreview();
-        if (Parameters.FOCUS_MODE_AUTO.equals(mParameters.getFocusMode())) {
-            mCamera.autoFocus(/* Camera.AutoFocusCallback */ null);
-            sendMessageDelayed(obtainMessage(MSG_AUTO_FOCUS), AUTOFOCUS_INTERVAL_MS);
-        }
-        return true;
-    }
-
-    private class DecodingTask extends AsyncTask<Void, Void, String> {
-        private QrYuvLuminanceSource mImage;
-        private SurfaceTexture mSurface;
-
-        private DecodingTask(SurfaceTexture surface) {
-            mSurface = surface;
-        }
-
-        @Override
-        protected String doInBackground(Void... tmp) {
-            if (!initCamera(mSurface)) {
-                return null;
-            }
-
-            final Semaphore imageGot = new Semaphore(0);
-            while (true) {
-                // This loop will try to capture preview image continuously until a valid QR Code
-                // decoded. The caller can also call {@link #stop()} to interrupts scanning loop.
-                mCamera.setOneShotPreviewCallback(
-                        (imageData, camera) -> {
-                            mImage = getFrameImage(imageData);
-                            imageGot.release();
-                        });
-                try {
-                    // Semaphore.acquire() blocking until permit is available, or the thread is
-                    // interrupted.
-                    imageGot.acquire();
-                    Result qrCode = null;
-                    try {
-                        qrCode =
-                                mReader.decodeWithState(
-                                        new BinaryBitmap(new HybridBinarizer(mImage)));
-                    } catch (ReaderException e) {
-                        // No logging since every time the reader cannot decode the
-                        // image, this ReaderException will be thrown.
-                    } finally {
-                        mReader.reset();
-                    }
-                    if (qrCode != null) {
-                        if (mScannerCallback.isValid(qrCode.getText())) {
-                            return qrCode.getText();
-                        }
-                    }
-                } catch (InterruptedException e) {
-                    Thread.currentThread().interrupt();
-                    return null;
-                }
-            }
-        }
-
-        @Override
-        protected void onPostExecute(String qrCode) {
-            if (qrCode != null) {
-                mScannerCallback.handleSuccessfulResult(qrCode);
-            }
-        }
-
-        private boolean initCamera(SurfaceTexture surface) {
-            final int numberOfCameras = Camera.getNumberOfCameras();
-            Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
-            try {
-                for (int i = 0; i < numberOfCameras; ++i) {
-                    Camera.getCameraInfo(i, cameraInfo);
-                    if (cameraInfo.facing == CameraInfo.CAMERA_FACING_BACK) {
-                        releaseCamera();
-                        mCamera = Camera.open(i);
-                        mCameraOrientation = cameraInfo.orientation;
-                        break;
-                    }
-                }
-                if (mCamera == null && numberOfCameras > 0) {
-                    Log.i(TAG, "Can't find back camera. Opening a different camera");
-                    Camera.getCameraInfo(0, cameraInfo);
-                    releaseCamera();
-                    mCamera = Camera.open(0);
-                    mCameraOrientation = cameraInfo.orientation;
-                }
-            } catch (RuntimeException e) {
-                Log.e(TAG, "Fail to open camera: " + e);
-                mCamera = null;
-                mScannerCallback.handleCameraFailure();
-                return false;
-            }
-
-            try {
-                if (mCamera == null) {
-                    throw new IOException("Cannot find available camera");
-                }
-                mCamera.setPreviewTexture(surface);
-                setCameraParameter();
-                setTransformationMatrix();
-                if (!startPreview()) {
-                    throw new IOException("Lost contex");
-                }
-            } catch (IOException ioe) {
-                Log.e(TAG, "Fail to startPreview camera: " + ioe);
-                mCamera = null;
-                mScannerCallback.handleCameraFailure();
-                return false;
-            }
-            return true;
-        }
-    }
-
-    private void releaseCamera() {
-        if (mCamera != null) {
-            mCamera.release();
-            mCamera = null;
-        }
-    }
-
-    /** Set transform matrix to crop and center the preview picture */
-    private void setTransformationMatrix() {
-        final boolean isPortrait = mContext.get().getResources().getConfiguration().orientation
-                == Configuration.ORIENTATION_PORTRAIT;
-
-        final int previewWidth = isPortrait ? mPreviewSize.getWidth() : mPreviewSize.getHeight();
-        final int previewHeight = isPortrait ? mPreviewSize.getHeight() : mPreviewSize.getWidth();
-        final float ratioPreview = (float) getRatio(previewWidth, previewHeight);
-
-        // Calculate transformation matrix.
-        float scaleX = 1.0f;
-        float scaleY = 1.0f;
-        if (previewWidth > previewHeight) {
-            scaleY = scaleX / ratioPreview;
-        } else {
-            scaleX = scaleY / ratioPreview;
-        }
-
-        // Set the transform matrix.
-        final Matrix matrix = new Matrix();
-        matrix.setScale(scaleX, scaleY);
-        mScannerCallback.setTransform(matrix);
-    }
-
-    private QrYuvLuminanceSource getFrameImage(byte[] imageData) {
-        final Rect frame = mScannerCallback.getFramePosition(mPreviewSize, mCameraOrientation);
-        final QrYuvLuminanceSource image = new QrYuvLuminanceSource(imageData,
-                mPreviewSize.getWidth(), mPreviewSize.getHeight());
-        return (QrYuvLuminanceSource)
-                image.crop(frame.left, frame.top, frame.width(), frame.height());
-    }
-
-    @Override
-    public void handleMessage(Message msg) {
-        switch (msg.what) {
-            case MSG_AUTO_FOCUS:
-                // Calling autoFocus(null) will only trigger the camera to focus once. In order
-                // to make the camera continuously auto focus during scanning, need to periodically
-                // trigger it.
-                mCamera.autoFocus(/* Camera.AutoFocusCallback */ null);
-                sendMessageDelayed(obtainMessage(MSG_AUTO_FOCUS), AUTOFOCUS_INTERVAL_MS);
-                break;
-            default:
-                Log.d(TAG, "Unexpected Message: " + msg.what);
-        }
-    }
-
-    /** Get best preview size from the list of camera supported preview sizes. Compares the
-     * preview size and aspect ratio to choose the best one. */
-    private Size getBestPreviewSize(Camera.Parameters parameters) {
-        final double minRatioDiffPercent = 0.1;
-        final Size windowSize = mScannerCallback.getViewSize();
-        final double winRatio = getRatio(windowSize.getWidth(), windowSize.getHeight());
-        double bestChoiceRatio = 0;
-        Size bestChoice = new Size(0, 0);
-        for (Camera.Size size : parameters.getSupportedPreviewSizes()) {
-            double ratio = getRatio(size.width, size.height);
-            if (size.height * size.width > bestChoice.getWidth() * bestChoice.getHeight()
-                    && (Math.abs(bestChoiceRatio - winRatio) / winRatio > minRatioDiffPercent
-                    || Math.abs(ratio - winRatio) / winRatio <= minRatioDiffPercent)) {
-                bestChoice = new Size(size.width, size.height);
-                bestChoiceRatio = getRatio(size.width, size.height);
-            }
-        }
-        return bestChoice;
-    }
-
-    /** Get best picture size from the list of camera supported picture sizes. Compares the
-     *  picture size and aspect ratio to choose the best one. */
-    private Size getBestPictureSize(Camera.Parameters parameters) {
-        final Camera.Size previewSize = parameters.getPreviewSize();
-        final double previewRatio = getRatio(previewSize.width, previewSize.height);
-        List<Size> bestChoices = new ArrayList<>();
-        final List<Size> similarChoices = new ArrayList<>();
-
-        // Filter by ratio
-        for (Camera.Size size : parameters.getSupportedPictureSizes()) {
-            double ratio = getRatio(size.width, size.height);
-            if (ratio == previewRatio) {
-                bestChoices.add(new Size(size.width, size.height));
-            } else if (Math.abs(ratio - previewRatio) < MAX_RATIO_DIFF) {
-                similarChoices.add(new Size(size.width, size.height));
-            }
-        }
-
-        if (bestChoices.size() == 0 && similarChoices.size() == 0) {
-            Log.d(TAG, "No proper picture size, return default picture size");
-            Camera.Size defaultPictureSize = parameters.getPictureSize();
-            return new Size(defaultPictureSize.width, defaultPictureSize.height);
-        }
-
-        if (bestChoices.size() == 0) {
-            bestChoices = similarChoices;
-        }
-
-        // Get the best by area
-        int bestAreaDifference = Integer.MAX_VALUE;
-        Size bestChoice = null;
-        final int previewArea = previewSize.width * previewSize.height;
-        for (Size size : bestChoices) {
-            int areaDifference = Math.abs(size.getWidth() * size.getHeight() - previewArea);
-            if (areaDifference < bestAreaDifference) {
-                bestAreaDifference = areaDifference;
-                bestChoice = size;
-            }
-        }
-        return bestChoice;
-    }
-
-    private double getRatio(double x, double y) {
-        return (x < y) ? x / y : y / x;
-    }
-
-    @VisibleForTesting
-    protected void decodeImage(BinaryBitmap image) {
-        Result qrCode = null;
-
-        try {
-            qrCode = mReader.decodeWithState(image);
-        } catch (ReaderException e) {
-        } finally {
-            mReader.reset();
-        }
-
-        if (qrCode != null) {
-            mScannerCallback.handleSuccessfulResult(qrCode.getText());
-        }
-    }
-
-    /**
-     * After {@link #start(SurfaceTexture)}, DecodingTask runs continuously to capture images and
-     * decode QR code. DecodingTask become null After {@link #stop()}.
-     *
-     * Uses this method in test case to prevent power consumption problem.
-     */
-    public boolean isDecodeTaskAlive() {
-        return mDecodeTask != null;
-    }
-}
diff --git a/src/com/android/settings/wifi/qrcode/QrDecorateView.java b/src/com/android/settings/wifi/qrcode/QrDecorateView.java
deleted file mode 100644
index 5df0cd0..0000000
--- a/src/com/android/settings/wifi/qrcode/QrDecorateView.java
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * 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.android.settings.wifi.qrcode;
-
-import android.content.Context;
-import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.Paint;
-import android.graphics.PorterDuff;
-import android.graphics.PorterDuffXfermode;
-import android.graphics.RectF;
-import android.util.AttributeSet;
-import android.util.TypedValue;
-import android.view.View;
-
-import com.android.settings.R;
-
-/**
- * Draws the lines at the corner of the inner frame.
- */
-public class QrDecorateView extends View {
-    private static final float CORNER_STROKE_WIDTH = 4f;    // 4dp
-    private static final float CORNER_LINE_LENGTH = 264f;   // 264dp
-    private static final float CORNER_RADIUS = 16f;         // 16dp
-
-    final private int mCornerColor;
-    final private int mFocusedCornerColor;
-    final private int mBackgroundColor;
-
-    final private Paint mStrokePaint;
-    final private Paint mTransparentPaint;
-    final private Paint mBackgroundPaint;
-
-    final private float mRadius;
-    final private float mInnerRidus;
-
-    private Bitmap mMaskBitmap;
-    private Canvas mMaskCanvas;
-
-    private RectF mOuterFrame;
-    private RectF mInnerFrame;
-
-    private boolean mFocused;
-
-    public QrDecorateView(Context context) {
-        this(context, null);
-    }
-
-    public QrDecorateView(Context context, AttributeSet attrs) {
-        this(context, attrs, 0);
-    }
-
-    public QrDecorateView(Context context, AttributeSet attrs, int defStyleAttr) {
-        this(context, attrs, defStyleAttr, 0);
-    }
-
-    public QrDecorateView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
-        super(context, attrs, defStyleAttr, defStyleRes);
-
-        mFocused = false;
-        mRadius = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, CORNER_RADIUS,
-                getResources().getDisplayMetrics());
-        // Inner radius needs to minus stroke width for keeping the width of border consistent.
-        mInnerRidus = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
-                CORNER_RADIUS - CORNER_STROKE_WIDTH, getResources().getDisplayMetrics());
-
-        mCornerColor = context.getResources().getColor(R.color.qr_corner_line_color);
-        mFocusedCornerColor = context.getResources().getColor(R.color.qr_focused_corner_line_color);
-        mBackgroundColor = context.getResources().getColor(R.color.qr_background_color);
-
-        mStrokePaint = new Paint();
-        mStrokePaint.setAntiAlias(true);
-
-        mTransparentPaint = new Paint();
-        mTransparentPaint.setAntiAlias(true);
-        mTransparentPaint.setColor(getResources().getColor(android.R.color.transparent));
-        mTransparentPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
-
-        mBackgroundPaint = new Paint();
-        mBackgroundPaint.setColor(mBackgroundColor);
-    }
-
-    @Override
-    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
-        super.onLayout(changed, left, top, right, bottom);
-
-        if(mMaskBitmap == null) {
-            mMaskBitmap = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888);
-            mMaskCanvas = new Canvas(mMaskBitmap);
-        }
-
-        calculateFramePos();
-    }
-
-    @Override
-    protected void onDraw(Canvas canvas) {
-        // Set frame line color.
-        mStrokePaint.setColor(mFocused ? mFocusedCornerColor : mCornerColor);
-        // Draw background color.
-        mMaskCanvas.drawColor(mBackgroundColor);
-        // Draw outer corner.
-        mMaskCanvas.drawRoundRect(mOuterFrame, mRadius, mRadius, mStrokePaint);
-        // Draw inner transparent corner.
-        mMaskCanvas.drawRoundRect(mInnerFrame, mInnerRidus, mInnerRidus, mTransparentPaint);
-
-        canvas.drawBitmap(mMaskBitmap, 0, 0, mBackgroundPaint);
-        super.onDraw(canvas);
-    }
-
-    private void calculateFramePos() {
-        final int centralX = getWidth() / 2;
-        final int centralY = getHeight() / 2;
-        final float cornerLineLength = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
-                CORNER_LINE_LENGTH, getResources().getDisplayMetrics()) / 2;
-        final float strokeWidth = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
-                CORNER_STROKE_WIDTH, getResources().getDisplayMetrics());
-
-        mOuterFrame = new RectF(centralX - cornerLineLength, centralY - cornerLineLength,
-                centralX + cornerLineLength, centralY + cornerLineLength);
-        mInnerFrame = new RectF(mOuterFrame.left + strokeWidth, mOuterFrame.top + strokeWidth,
-                mOuterFrame.right - strokeWidth, mOuterFrame.bottom - strokeWidth);
-    }
-
-    // Draws green lines if focused. Otherwise, draws white lines.
-    public void setFocused(boolean focused) {
-        mFocused = focused;
-        invalidate();
-    }
-}
diff --git a/src/com/android/settings/wifi/qrcode/QrYuvLuminanceSource.java b/src/com/android/settings/wifi/qrcode/QrYuvLuminanceSource.java
deleted file mode 100644
index 874a758..0000000
--- a/src/com/android/settings/wifi/qrcode/QrYuvLuminanceSource.java
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * 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.android.settings.wifi.qrcode;
-
-import com.google.zxing.LuminanceSource;
-
-/**
- * This helper class implements crop method to crop preview picture.
- */
-public class QrYuvLuminanceSource extends LuminanceSource {
-
-    private byte[] mYuvData;
-    private int mWidth;
-    private int mHeight;
-
-    public QrYuvLuminanceSource(byte[] yuvData, int width, int height) {
-        super(width, height);
-
-        mWidth = width;
-        mHeight = height;
-        mYuvData = yuvData;
-    }
-
-    @Override
-    public boolean isCropSupported() {
-        return true;
-    }
-
-    @Override
-    public LuminanceSource crop(int left, int top, int crop_width, int crop_height) {
-        final byte[] newImage = new byte[crop_width * crop_height];
-        int inputOffset = top * mWidth + left;
-
-        if (left + crop_width > mWidth || top + crop_height > mHeight) {
-            throw new IllegalArgumentException("cropped rectangle does not fit within image data.");
-        }
-
-        for (int y = 0; y < crop_height; y++) {
-            System.arraycopy(mYuvData, inputOffset, newImage, y * crop_width, crop_width);
-            inputOffset += mWidth;
-        }
-        return new QrYuvLuminanceSource(newImage, crop_width, crop_height);
-    }
-
-    @Override
-    public byte[] getRow(int y, byte[] row) {
-        if (y < 0 || y >= mHeight) {
-            throw new IllegalArgumentException("Requested row is outside the image: " + y);
-        }
-        if (row == null || row.length < mWidth) {
-            row = new byte[mWidth];
-        }
-        System.arraycopy(mYuvData, y * mWidth, row, 0, mWidth);
-        return row;
-    }
-
-    @Override
-    public byte[] getMatrix() {
-        return mYuvData;
-    }
-}
diff --git a/tests/robotests/src/com/android/settings/wifi/qrcode/QrCameraTest.java b/tests/robotests/src/com/android/settings/wifi/qrcode/QrCameraTest.java
deleted file mode 100644
index 3ad846d..0000000
--- a/tests/robotests/src/com/android/settings/wifi/qrcode/QrCameraTest.java
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * 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.android.settings.wifi.qrcode;
-
-import static com.google.common.truth.Truth.assertThat;
-
-import static org.mockito.ArgumentMatchers.anyInt;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
-
-import android.content.Context;
-import android.graphics.Bitmap;
-import android.graphics.Matrix;
-import android.graphics.Rect;
-import android.graphics.SurfaceTexture;
-import android.hardware.Camera;
-import android.hardware.Camera.Parameters;
-import android.hardware.Camera.Size;
-
-import com.android.settingslib.qrcode.QrCodeGenerator;
-
-import com.google.zxing.BinaryBitmap;
-import com.google.zxing.LuminanceSource;
-import com.google.zxing.RGBLuminanceSource;
-import com.google.zxing.WriterException;
-import com.google.zxing.common.HybridBinarizer;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.Mock;
-import org.robolectric.RobolectricTestRunner;
-import org.robolectric.RuntimeEnvironment;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.TimeUnit;
-
-@RunWith(RobolectricTestRunner.class)
-public class QrCameraTest {
-
-    @Mock
-    private SurfaceTexture mSurfaceTexture;
-
-    private QrCamera mCamera;
-    private Context mContext;
-
-    private String mQrCode;
-    CountDownLatch mCallbackSignal;
-    private boolean mCameraCallbacked;
-
-    private class ScannerTestCallback implements QrCamera.ScannerCallback {
-        @Override
-        public android.util.Size getViewSize() {
-            return new android.util.Size(0, 0);
-        }
-
-        @Override
-        public Rect getFramePosition(android.util.Size previewSize, int cameraOrientation) {
-            return new Rect(0,0,0,0);
-        }
-
-        @Override
-        public void handleSuccessfulResult(String qrCode) {
-            mQrCode = qrCode;
-        }
-
-        @Override
-        public void handleCameraFailure() {
-            mCameraCallbacked = true;
-            mCallbackSignal.countDown();
-        }
-
-        @Override
-        public void setTransform(Matrix transform) {
-            // Do nothing
-        }
-
-        @Override
-        public boolean isValid(String qrCode) {
-            return true;
-        }
-    }
-
-    private ScannerTestCallback mScannerCallback;
-
-    @Before
-    public void setUp() {
-        mContext = RuntimeEnvironment.application;
-        mScannerCallback = new ScannerTestCallback();
-        mCamera = new QrCamera(mContext, mScannerCallback);
-        mSurfaceTexture = mock(SurfaceTexture.class);
-        mQrCode = "";
-        mCameraCallbacked = false;
-        mCallbackSignal = null;
-    }
-
-    @Test
-    public void testCamera_Init_Callback() throws InterruptedException {
-        mCallbackSignal = new CountDownLatch(1);
-        mCamera.start(mSurfaceTexture);
-        mCallbackSignal.await(5000, TimeUnit.MILLISECONDS);
-        assertThat(mCameraCallbacked).isTrue();
-    }
-
-    @Test
-    public void testDecode_PictureCaptured_QrCodeCorrectValue() {
-        final String googleUrl = "http://www.google.com";
-
-        try {
-            final Bitmap bmp = QrCodeGenerator.encodeQrCode(googleUrl, 320);
-            final int[] intArray = new int[bmp.getWidth() * bmp.getHeight()];
-            bmp.getPixels(intArray, 0, bmp.getWidth(), 0, 0, bmp.getWidth(), bmp.getHeight());
-            LuminanceSource source = new RGBLuminanceSource(bmp.getWidth(), bmp.getHeight(),
-                    intArray);
-            final BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
-            mCamera.decodeImage(bitmap);
-            bmp.recycle();
-        } catch (WriterException e) {
-        }
-
-        assertThat(mQrCode).isEqualTo(googleUrl);
-    }
-
-    @Test
-    public void testDecode_unicodePictureCaptured_QrCodeCorrectValue() {
-        final String unicodeTest = "中文測試";
-
-        try {
-            final Bitmap bmp = QrCodeGenerator.encodeQrCode(unicodeTest, 320);
-            final int[] intArray = new int[bmp.getWidth() * bmp.getHeight()];
-            bmp.getPixels(intArray, 0, bmp.getWidth(), 0, 0, bmp.getWidth(), bmp.getHeight());
-            LuminanceSource source = new RGBLuminanceSource(bmp.getWidth(), bmp.getHeight(),
-                    intArray);
-            final BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
-            mCamera.decodeImage(bitmap);
-            bmp.recycle();
-        } catch (WriterException e) {
-        }
-
-        assertThat(mQrCode).isEqualTo(unicodeTest);
-    }
-
-    @Test
-    public void setCameraParameter_shouldSetParameters() {
-        mCamera.mCamera = mock(Camera.class);
-        Parameters parameters = mock(Camera.Parameters.class);
-        Size size = mCamera.mCamera.new Size(1920, 1440);
-        List<Camera.Size> sizes = new ArrayList<>(Arrays.asList(size));
-        when(parameters.getPreviewSize()).thenReturn(size);
-        when(parameters.getSupportedPreviewSizes()).thenReturn(sizes);
-        when(parameters.getSupportedPictureSizes()).thenReturn(sizes);
-        when(mCamera.mCamera.getParameters()).thenReturn(parameters);
-
-        mCamera.setCameraParameter();
-
-        verify(mCamera.mParameters).setPreviewSize(anyInt(), anyInt());
-        verify(mCamera.mParameters).setPictureSize(anyInt(), anyInt());
-        verify(mCamera.mCamera).setParameters(mCamera.mParameters);
-    }
-}