Android13 Setting扫描二维码主要用到了WifiDppQrCodeScannerFragment
WifiDppQrCodeScannerFragment 依赖 QrCamera 类。
QrCamera 使用了 Camera1 的API。
开发了新类 ModernQrScanner ，采用了Camera2和更新了最新的Zxing包。
添加一个新的二维码扫描的处理类，放在com.android.settings.wifi.dpp 包下面。
package com.android.settings.wifi.dpp;
import android.Manifest;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.ImageFormat;
import android.graphics.Rect;
import android.graphics.SurfaceTexture;
import android.graphics.YuvImage;
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.CaptureResult;
import android.hardware.camera2.TotalCaptureResult;
import android.hardware.camera2.params.StreamConfigurationMap;
import android.media.Image;
import android.media.ImageReader;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.util.Log;
import android.util.Size;
import android.view.Surface;
import android.view.TextureView;
import androidx.annotation.NonNull;
import androidx.core.content.ContextCompat;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.PlanarYUVLuminanceSource;
import com.google.zxing.RGBLuminanceSource;
import com.google.zxing.ReaderException;
import com.google.zxing.Result;
import com.google.zxing.common.HybridBinarizer;
import java.io.ByteArrayOutputStream;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.EnumMap;
import java.util.EnumSet;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* 现代化QR码扫描工具类，基于Camera2 API
* 提供更好的兼容性、稳定性和识别率
*/
public class ModernQrScanner {
private static final String TAG = "ModernQrScanner";
// 相机相关
private CameraManager mCameraManager;
private CameraDevice mCameraDevice;
private CameraCaptureSession mCaptureSession;
private ImageReader mImageReader;
private Size mPreviewSize;
private String mCameraId;
// 线程管理
private HandlerThread mBackgroundThread;
private Handler mBackgroundHandler;
private volatile Handler mMainHandler;
// 同步控制
private final Semaphore mCameraOpenCloseLock = new Semaphore(1);
private final AtomicBoolean mIsScanning = new AtomicBoolean(false);
private final AtomicBoolean mIsCameraOpen = new AtomicBoolean(false);
// QR码解码
private MultiFormatReader mMultiFormatReader;
private static final Map<DecodeHintType, Object> DECODE_HINTS = new EnumMap<>(DecodeHintType.class);
// 配置参数
private static final int MAX_PREVIEW_WIDTH = 1920;
private static final int MAX_PREVIEW_HEIGHT = 1080;
private static final int MIN_PREVIEW_WIDTH = 640;
private static final int MIN_PREVIEW_HEIGHT = 480;
private static final long SCAN_INTERVAL_MS = 200;
// 回调接口
private volatile ScanCallback mScanCallback;
private Context mContext;
static {
// 配置ZXing解码参数
DECODE_HINTS.put(DecodeHintType.POSSIBLE_FORMATS, EnumSet.of(BarcodeFormat.QR_CODE, BarcodeFormat.DATA_MATRIX, BarcodeFormat.AZTEC, BarcodeFormat.PDF_417));
DECODE_HINTS.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
DECODE_HINTS.put(DecodeHintType.CHARACTER_SET, "UTF-8");
DECODE_HINTS.put(DecodeHintType.ALSO_INVERTED, Boolean.TRUE);
}
public interface ScanCallback {
/**
* 扫描成功回调
*
* @param result QR码内容
* @param format 条码格式
*/
void onScanSuccess(String result, BarcodeFormat format);
/**
* 扫描失败回调
*
* @param error 错误信息
*/
void onScanError(String error);
/**
* 相机状态回调
*
* @param isOpen 相机是否已开启
*/
void onCameraStateChanged(boolean isOpen);
/**
* 获取扫描区域
*
* @param previewSize 预览尺寸
* @return 扫描区域，null表示全屏扫描
*/
Rect getScanRect(Size previewSize);
void testGetScan(Bitmap bitmap);
}
public ModernQrScanner(@NonNull Context context) {
mContext = context.getApplicationContext();
mCameraManager = (CameraManager) mContext.getSystemService(Context.CAMERA_SERVICE);
mMainHandler = new Handler(Looper.getMainLooper());
initializeReader();
}
private void initializeReader() {
mMultiFormatReader = new MultiFormatReader();
mMultiFormatReader.setHints(DECODE_HINTS);
}
/**
* 开始扫描
*
* @param surface 预览Surface
* @param callback 扫描回调
*/
public void startScanning(@NonNull Surface surface, @NonNull ScanCallback callback) {
if (!checkCameraPermission()) {
callback.onScanError("Camera permission not granted");
return;
}
mScanCallback = callback;
startBackgroundThread();
try {
if (!mCameraOpenCloseLock.tryAcquire(2500, TimeUnit.MILLISECONDS)) {
callback.onScanError("Time out waiting to lock camera opening.");
return;
}
openCamera(surface);
} catch (InterruptedException e) {
callback.onScanError("Interrupted while trying to lock camera opening: " + e.getMessage());
}
}
public void startScanning(TextureView textureView, ScanCallback callback) {
if (!checkCameraPermission() && textureView != null) {
callback.onScanError("Camera permission not granted");
return;
}
mScanCallback = callback;
startBackgroundThread();
try {
if (!mCameraOpenCloseLock.tryAcquire(2500, TimeUnit.MILLISECONDS)) {
callback.onScanError("Time out waiting to lock camera opening.");
return;
}
if (textureView.isAvailable()) {
openCamera(new Surface(textureView.getSurfaceTexture()));
} else {
textureView.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
@Override
public void onSurfaceTextureAvailable(@NonNull SurfaceTexture surfaceTexture, int i, int i1) {
openCamera(new Surface(surfaceTexture));
}
@Override
public void onSurfaceTextureSizeChanged(@NonNull SurfaceTexture surfaceTexture, int i, int i1) {
}
@Override
public boolean onSurfaceTextureDestroyed(@NonNull SurfaceTexture surfaceTexture) {
closeCamera();
return false;
}
@Override
public void onSurfaceTextureUpdated(@NonNull SurfaceTexture surfaceTexture) {
}
});
}
} catch (InterruptedException e) {
callback.onScanError("Interrupted while trying to lock camera opening: " + e.getMessage());
}
}
/**
* 停止扫描
*/
public void stopScanning() {
mIsScanning.set(false);
closeCamera();
stopBackgroundThread();
// if (mScanCallback != null && mMainHandler != null) {
// mMainHandler.post(() -> mScanCallback.onCameraStateChanged(false));
// }
}
private boolean checkCameraPermission() {
return ContextCompat.checkSelfPermission(mContext, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED;
}
private void startBackgroundThread() {
mBackgroundThread = new HandlerThread("CameraBackground");
mBackgroundThread.start();
mBackgroundHandler = new Handler(mBackgroundThread.getLooper());
}
private void stopBackgroundThread() {
if (mBackgroundThread != null) {
mBackgroundThread.quitSafely();
try {
mBackgroundThread.join();
mBackgroundThread = null;
mBackgroundHandler = null;
} catch (InterruptedException e) {
Log.e(TAG, "Error stopping background thread", e);
}
}
}
@SuppressLint("MissingPermission")
private void openCamera(@NonNull Surface surface) {
try {
// Log.e(TAG, " openCamera ");
setupCameraParameters();
setupImageReader();
mCameraManager.openCamera(mCameraId, new CameraDevice.StateCallback() {
@Override
public void onOpened(@NonNull CameraDevice camera) {
mCameraOpenCloseLock.release();
mCameraDevice = camera;
mIsCameraOpen.set(true);
createCameraPreviewSession(surface);
if (mScanCallback != null) {
mMainHandler.post(() -> mScanCallback.onCameraStateChanged(true));
}
}
@Override
public void onDisconnected(@NonNull CameraDevice camera) {
mCameraOpenCloseLock.release();
camera.close();
mCameraDevice = null;
mIsCameraOpen.set(false);
if (mScanCallback != null) {
mMainHandler.post(() -> mScanCallback.onCameraStateChanged(false));
}
}
@Override
public void onError(@NonNull CameraDevice camera, int error) {
mCameraOpenCloseLock.release();
camera.close();
mCameraDevice = null;
mIsCameraOpen.set(false);
if (mScanCallback != null) {
String errorMsg = "Camera error: " + error;
mMainHandler.post(() -> {
mScanCallback.onScanError(errorMsg);
mScanCallback.onCameraStateChanged(false);
});
}
}
}, mBackgroundHandler);
} catch (Exception e) {
Log.e(TAG, "Failed to open camera", e);
if (mScanCallback != null) {
mMainHandler.post(() -> mScanCallback.onScanError("Failed to open camera: " + e.getMessage()));
}
}
}
private void setupCameraParameters() throws CameraAccessException {
mCameraId = selectBestCamera();
if (mCameraId == null) {
throw new CameraAccessException(CameraAccessException.CAMERA_ERROR);
}
CameraCharacteristics characteristics = mCameraManager.getCameraCharacteristics(mCameraId);
StreamConfigurationMap map = characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
if (map == null) {
throw new CameraAccessException(CameraAccessException.CAMERA_ERROR);
}
// 选择最佳预览尺寸
Size[] outputSizes = map.getOutputSizes(ImageFormat.YUV_420_888);
mPreviewSize = chooseBestSize(outputSizes, MAX_PREVIEW_WIDTH, MAX_PREVIEW_HEIGHT);
Log.d(TAG, "Selected camera: " + mCameraId + ", preview size: " + mPreviewSize);
}
private String selectBestCamera() throws CameraAccessException {
String[] cameraIds = mCameraManager.getCameraIdList();
// 优先选择后置摄像头
for (String cameraId : cameraIds) {
CameraCharacteristics characteristics = mCameraManager.getCameraCharacteristics(cameraId);
Integer facing = characteristics.get(CameraCharacteristics.LENS_FACING);
if (facing != null && facing == CameraCharacteristics.LENS_FACING_BACK) {
// 检查是否支持自动对焦
int[] afModes = characteristics.get(CameraCharacteristics.CONTROL_AF_AVAILABLE_MODES);
if (afModes != null && afModes.length > 0) {
return cameraId;
}
}
}
// 如果没有后置摄像头，选择第一个可用的
return cameraIds.length > 0 ? cameraIds[0] : null;
}
private Size chooseBestSize(Size[] choices, int maxWidth, int maxHeight) {
List<Size> bigEnough = new ArrayList<>();
List<Size> notBigEnough = new ArrayList<>();
for (Size option : choices) {
if (option.getWidth() >= MIN_PREVIEW_WIDTH && option.getHeight() >= MIN_PREVIEW_HEIGHT) {
if (option.getWidth() <= maxWidth && option.getHeight() <= maxHeight) {
bigEnough.add(option);
} else {
notBigEnough.add(option);
}
}
}
// 选择满足条件的最大尺寸，或者最小的可用尺寸
if (bigEnough.size() > 0) {
return Collections.max(bigEnough, new CompareSizesByArea());
} else if (notBigEnough.size() > 0) {
return Collections.min(notBigEnough, new CompareSizesByArea());
} else {
Log.w(TAG, "Couldn't find any suitable preview size");
return choices[0];
}
}
private void setupImageReader() {
// mImageReader = ImageReader.newInstance(mPreviewSize.getWidth(), mPreviewSize.getHeight(), ImageFormat.YUV_420_888, 2);
mImageReader = ImageReader.newInstance(mPreviewSize.getWidth(), mPreviewSize.getHeight(), ImageFormat.JPEG, 3);
mImageReader.setOnImageAvailableListener(new ImageReader.OnImageAvailableListener() {
@Override
public void onImageAvailable(ImageReader reader) {
if (mIsScanning.get()) {
processImage(reader.acquireLatestImage());
}
}
}, mBackgroundHandler);
// Log.e(TAG, " setupImageReader =============== ok ");
}
private void createCameraPreviewSession(@NonNull Surface surface) {
try {
List<Surface> surfaces = Arrays.asList(surface, mImageReader.getSurface());
mCameraDevice.createCaptureSession(surfaces, new CameraCaptureSession.StateCallback() {
@Override
public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) {
if (mCameraDevice == null) {
return;
}
mCaptureSession = cameraCaptureSession;
startRepeatingRequest(surface);
}
@Override
public void onConfigureFailed(@NonNull CameraCaptureSession cameraCaptureSession) {
if (mScanCallback != null) {
mMainHandler.post(() -> mScanCallback.onScanError("Failed to configure camera"));
}
}
}, mBackgroundHandler);
} catch (CameraAccessException e) {
Log.e(TAG, "Failed to create camera preview session", e);
if (mScanCallback != null) {
mMainHandler.post(() -> mScanCallback.onScanError("Failed to create preview session: " + e.getMessage()));
}
}
}
private void startRepeatingRequest(Surface surface) {
try {
CaptureRequest.Builder requestBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
requestBuilder.addTarget(mImageReader.getSurface());
requestBuilder.addTarget(surface);
// 设置自动对焦模式
requestBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
// 设置自动曝光模式
requestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON);
// 设置自动白平衡
requestBuilder.set(CaptureRequest.CONTROL_AWB_MODE, CaptureRequest.CONTROL_AWB_MODE_AUTO);
// 设置场景模式为条码扫描（如果支持）
requestBuilder.set(CaptureRequest.CONTROL_SCENE_MODE, CaptureRequest.CONTROL_SCENE_MODE_BARCODE);
mCaptureSession.setRepeatingRequest(requestBuilder.build(), new CameraCaptureSession.CaptureCallback() {
@Override
public void onCaptureCompleted(@NonNull CameraCaptureSession session, @NonNull CaptureRequest request, @NonNull TotalCaptureResult result) {
// 开始扫描
mIsScanning.set(true);
}
}, mBackgroundHandler);
} catch (CameraAccessException e) {
Log.e(TAG, "Failed to start repeating request", e);
if (mScanCallback != null) {
mMainHandler.post(() -> mScanCallback.onScanError("Failed to start camera preview: " + e.getMessage()));
}
}
}
private volatile boolean inAction = false;
private void processImage(Image image) {
// Log.e(TAG, "processImage ... ");
if (image == null || !mIsScanning.get()) {
if (image != null) {
image.close();
}
return;
}
try {
// 转换Image到byte数组
Image.Plane[] planes = image.getPlanes();
ByteBuffer byteBuffer = planes[0].getBuffer();
byte[] bytes = new byte[byteBuffer.remaining()];
byteBuffer.get(bytes);
Bitmap bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
int[] pixels = new int[bitmap.getWidth() * bitmap.getHeight()];
bitmap.getPixels(pixels, 0, bitmap.getWidth(), 0, 0,
bitmap.getWidth(), bitmap.getHeight());
RGBLuminanceSource source = new RGBLuminanceSource(
bitmap.getWidth(), bitmap.getHeight(), pixels);
BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(source));
if (mScanCallback != null && !inAction) {
inAction = true;
mScanCallback.testGetScan(bitmap);
inAction = false;
}
Result result = mMultiFormatReader.decode(binaryBitmap);
if (result != null) {
mIsScanning.set(false); // 停止扫描
if (mScanCallback != null) {
final String text = result.getText();
final BarcodeFormat format = result.getBarcodeFormat();
mMainHandler.post(() -> mScanCallback.onScanSuccess(text, format));
}
}
} catch (ReaderException e) {
Log.e(TAG, "Error processing image", e);
// 解码失败，继续扫描
e.printStackTrace();
} catch (Exception e) {
Log.e(TAG, "Error processing image", e);
e.printStackTrace();
} finally {
mMultiFormatReader.reset();
image.close();
// inAction = false;
// 添加扫描间隔，避免过度消耗CPU
if (mIsScanning.get() && mBackgroundHandler != null) {
mBackgroundHandler.postDelayed(() -> {
// 延迟后继续扫描
}, SCAN_INTERVAL_MS);
}
}
}
private void closeCamera() {
try {
mCameraOpenCloseLock.acquire();
if (mCaptureSession != null) {
mCaptureSession.close();
mCaptureSession = null;
}
if (mCameraDevice != null) {
mCameraDevice.close();
mCameraDevice = null;
}
if (mImageReader != null) {
mImageReader.close();
mImageReader = null;
}
mIsCameraOpen.set(false);
} catch (InterruptedException e) {
Log.e(TAG, "Interrupted while trying to lock camera closing", e);
} finally {
mCameraOpenCloseLock.release();
}
}
/**
* 检查相机是否已开启
*/
public boolean isCameraOpen() {
return mIsCameraOpen.get();
}
/**
* 检查是否正在扫描
*/
public boolean isScanning() {
return mIsScanning.get();
}
/**
* 手动触发对焦
*/
public void triggerFocus() {
if (mCaptureSession != null && mCameraDevice != null) {
try {
CaptureRequest.Builder requestBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
requestBuilder.addTarget(mImageReader.getSurface());
requestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);
mCaptureSession.capture(requestBuilder.build(), null, mBackgroundHandler);
} catch (CameraAccessException e) {
Log.e(TAG, "Failed to trigger focus", e);
}
}
}
/**
* 重新开始扫描
*/
public void resumeScanning() {
mIsScanning.set(true);
}
/**
* 暂停扫描
*/
public void pauseScanning() {
mIsScanning.set(false);
}
/**
* 尺寸比较器
*/
private static class CompareSizesByArea implements Comparator<Size> {
@Override
public int compare(Size lhs, Size rhs) {
return Long.signum((long) lhs.getWidth() * lhs.getHeight() - (long) rhs.getWidth() * rhs.getHeight());
}
}
/**
* 资源清理
*/
public void release() {
stopScanning();
mScanCallback = null;
mContext = null;
}
}WifiDppQrCodeScannerFragment 做了修改适配了新的扫描类 ModernQrScanner。
/*
* 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.dpp;
import static android.net.wifi.WifiInfo.sanitizeSsid;
import android.graphics.Bitmap;
import android.app.Activity;
import android.app.settings.SettingsEnums;
import android.content.Context;
import android.content.Intent;
import android.graphics.Matrix;
import android.graphics.Rect;
import android.graphics.SurfaceTexture;
import android.net.wifi.EasyConnectStatusCallback;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.Message;
import android.os.Process;
import android.os.SimpleClock;
import android.os.SystemClock;
import android.text.TextUtils;
import android.util.EventLog;
import android.util.Log;
import android.util.Size;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.TextureView;
import android.view.TextureView.SurfaceTextureListener;
import android.view.View;
import android.view.ViewGroup;
import android.view.accessibility.AccessibilityEvent;
import android.widget.TextView;
import android.content.pm.ActivityInfo;
import com.google.zxing.BarcodeFormat;
import androidx.annotation.StringRes;
import androidx.annotation.UiThread;
import androidx.annotation.VisibleForTesting;
import androidx.lifecycle.ViewModelProviders;
import com.android.settings.R;
import com.android.settings.overlay.FeatureFactory;
import com.android.settingslib.qrcode.QrCamera;
import com.android.settingslib.qrcode.QrDecorateView;
import com.android.settingslib.wifi.WifiPermissionChecker;
import com.android.wifitrackerlib.WifiEntry;
import com.android.wifitrackerlib.WifiPickerTracker;
import android.view.Surface;
import java.time.Clock;
import java.time.ZoneOffset;
import java.util.List;
public class WifiDppQrCodeScannerFragment extends WifiDppQrCodeBaseFragment implements
SurfaceTextureListener,
QrCamera.ScannerCallback,
WifiManager.ActionListener {
private static final String TAG = "WifiDppQrCodeScanner";
/**
* Message sent to hide error message
*/
private static final int MESSAGE_HIDE_ERROR_MESSAGE = 1;
/**
* Message sent to show error message
*/
private static final int MESSAGE_SHOW_ERROR_MESSAGE = 2;
/**
* Message sent to manipulate Wi-Fi DPP QR code
*/
private static final int MESSAGE_SCAN_WIFI_DPP_SUCCESS = 3;
/**
* Message sent to manipulate ZXing Wi-Fi QR code
*/
private static final int MESSAGE_SCAN_ZXING_WIFI_FORMAT_SUCCESS = 4;
private static final long SHOW_ERROR_MESSAGE_INTERVAL = 10000;
private static final long SHOW_SUCCESS_SQUARE_INTERVAL = 1000;
// Key for Bundle usage
private static final String KEY_IS_CONFIGURATOR_MODE = "key_is_configurator_mode";
private static final String KEY_LATEST_ERROR_CODE = "key_latest_error_code";
public static final String KEY_WIFI_CONFIGURATION = "key_wifi_configuration";
private static final int ARG_RESTART_CAMERA = 1;
// Max age of tracked WifiEntries.
private static final long MAX_SCAN_AGE_MILLIS = 15_000;
// Interval between initiating WifiPickerTracker scans.
private static final long SCAN_INTERVAL_MILLIS = 10_000;
// private QrCamera mCamera;
private TextureView mTextureView;
private QrDecorateView mDecorateView;
private ModernQrScanner mCamera;
private TextView mErrorMessage;
/**
* true if the fragment working for configurator, false enrollee
*/
private boolean mIsConfiguratorMode;
/**
* The SSID of the Wi-Fi network which the user specify to enroll
*/
private String mSsid;
/**
* QR code data scanned by camera
*/
private WifiQrCode mWifiQrCode;
/**
* The WifiConfiguration connecting for enrollee usage
*/
private WifiConfiguration mEnrolleeWifiConfiguration;
private int mLatestStatusCode = WifiDppUtils.EASY_CONNECT_EVENT_FAILURE_NONE;
private WifiPickerTracker mWifiPickerTracker;
private HandlerThread mWorkerThread;
private WifiPermissionChecker mWifiPermissionChecker;
private final Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_HIDE_ERROR_MESSAGE:
mErrorMessage.setVisibility(View.INVISIBLE);
break;
case MESSAGE_SHOW_ERROR_MESSAGE:
final String errorMessage = (String) msg.obj;
mErrorMessage.setVisibility(View.VISIBLE);
mErrorMessage.setText(errorMessage);
mErrorMessage.sendAccessibilityEvent(
AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
// Cancel any pending messages to hide error view and requeue the message so
// user has time to see error
removeMessages(MESSAGE_HIDE_ERROR_MESSAGE);
sendEmptyMessageDelayed(MESSAGE_HIDE_ERROR_MESSAGE,
SHOW_ERROR_MESSAGE_INTERVAL);
if (msg.arg1 == ARG_RESTART_CAMERA) {
setProgressBarShown(false);
mDecorateView.setFocused(false);
restartCamera();
}
break;
case MESSAGE_SCAN_WIFI_DPP_SUCCESS:
if (mScanWifiDppSuccessListener == null) {
// mScanWifiDppSuccessListener may be null after onDetach(), do nothing here
return;
}
mScanWifiDppSuccessListener.onScanWifiDppSuccess((WifiQrCode) msg.obj);
if (!mIsConfiguratorMode) {
setProgressBarShown(true);
startWifiDppEnrolleeInitiator((WifiQrCode) msg.obj);
updateEnrolleeSummary();
mSummary.sendAccessibilityEvent(
AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
}
notifyUserForQrCodeRecognition();
break;
case MESSAGE_SCAN_ZXING_WIFI_FORMAT_SUCCESS:
final Context context = getContext();
if (context == null) {
// Context may be null if the message is received after the Activity has
// been destroyed
Log.d(TAG, "Scan success but context is null");
return;
}
// We may get 2 WifiConfiguration if the QR code has no password in it,
// one for open network and one for enhanced open network.
final WifiManager wifiManager =
context.getSystemService(WifiManager.class);
final WifiNetworkConfig qrCodeWifiNetworkConfig =
(WifiNetworkConfig) msg.obj;
final List<WifiConfiguration> qrCodeWifiConfigurations =
qrCodeWifiNetworkConfig.getWifiConfigurations();
// Adds all Wi-Fi networks in QR code to the set of configured networks and
// connects to it if it's reachable.
boolean hasHiddenOrReachableWifiNetwork = false;
for (WifiConfiguration qrCodeWifiConfiguration : qrCodeWifiConfigurations) {
final int id = wifiManager.addNetwork(qrCodeWifiConfiguration);
if (id == -1) {
continue;
}
if (!canConnectWifi(qrCodeWifiConfiguration.SSID)) return;
wifiManager.enableNetwork(id, /* attemptConnect */ false);
// WifiTracker only contains a hidden SSID Wi-Fi network if it's saved.
// We can't check if a hidden SSID Wi-Fi network is reachable in advance.
if (qrCodeWifiConfiguration.hiddenSSID ||
isReachableWifiNetwork(qrCodeWifiConfiguration)) {
hasHiddenOrReachableWifiNetwork = true;
mEnrolleeWifiConfiguration = qrCodeWifiConfiguration;
wifiManager.connect(id,
/* listener */ WifiDppQrCodeScannerFragment.this);
}
}
if (!hasHiddenOrReachableWifiNetwork) {
showErrorMessageAndRestartCamera(
R.string.wifi_dpp_check_connection_try_again);
return;
}
mMetricsFeatureProvider.action(
mMetricsFeatureProvider.getAttribution(getActivity()),
SettingsEnums.ACTION_SETTINGS_ENROLL_WIFI_QR_CODE,
SettingsEnums.SETTINGS_WIFI_DPP_ENROLLEE,
/* key */ null,
/* value */ Integer.MIN_VALUE);
notifyUserForQrCodeRecognition();
break;
default:
}
}
};
@UiThread
private void notifyUserForQrCodeRecognition() {
if (mCamera != null) {
mCamera.stopScanning();
}
mDecorateView.setFocused(true);
mErrorMessage.setVisibility(View.INVISIBLE);
WifiDppUtils.triggerVibrationForQrCodeRecognition(getContext());
}
private boolean isReachableWifiNetwork(WifiConfiguration wifiConfiguration) {
final List<WifiEntry> wifiEntries = mWifiPickerTracker.getWifiEntries();
final WifiEntry connectedWifiEntry = mWifiPickerTracker.getConnectedWifiEntry();
if (connectedWifiEntry != null) {
// Add connected WifiEntry to prevent fail toast to users when it's connected.
wifiEntries.add(connectedWifiEntry);
}
for (WifiEntry wifiEntry : wifiEntries) {
if (!TextUtils.equals(sanitizeSsid(wifiEntry.getSsid()), sanitizeSsid(wifiConfiguration.SSID))) {
continue;
}
final int security =
WifiDppUtils.getSecurityTypeFromWifiConfiguration(wifiConfiguration);
if (security == wifiEntry.getSecurity()) {
return true;
}
// Default security type of PSK/SAE transition mode WifiEntry is SECURITY_PSK and
// there is no way to know if a WifiEntry is of transition mode. Give it a chance.
if (security == WifiEntry.SECURITY_SAE
&& wifiEntry.getSecurity() == WifiEntry.SECURITY_PSK) {
return true;
}
}
return false;
}
@VisibleForTesting
boolean canConnectWifi(String ssid) {
final List<WifiEntry> wifiEntries = mWifiPickerTracker.getWifiEntries();
for (WifiEntry wifiEntry : wifiEntries) {
if (!TextUtils.equals(wifiEntry.getSsid(), sanitizeSsid(ssid))) continue;
if (!wifiEntry.canConnect()) {
Log.w(TAG, "Wi-Fi is not allowed to connect by your organization. SSID:" + ssid);
showErrorMessageAndRestartCamera(R.string.not_allowed_by_ent);
return false;
}
}
return true;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState != null) {
mIsConfiguratorMode = savedInstanceState.getBoolean(KEY_IS_CONFIGURATOR_MODE);
mLatestStatusCode = savedInstanceState.getInt(KEY_LATEST_ERROR_CODE);
mEnrolleeWifiConfiguration = savedInstanceState.getParcelable(KEY_WIFI_CONFIGURATION);
}
final WifiDppInitiatorViewModel model =
ViewModelProviders.of(this).get(WifiDppInitiatorViewModel.class);
model.getEnrolleeSuccessNetworkId().observe(this, networkId -> {
// After configuration change, observe callback will be triggered,
// do nothing for this case if a handshake does not end
if (model.isWifiDppHandshaking()) {
return;
}
new EasyConnectEnrolleeStatusCallback().onEnrolleeSuccess(networkId.intValue());
});
model.getStatusCode().observe(this, statusCode -> {
// After configuration change, observe callback will be triggered,
// do nothing for this case if a handshake does not end
if (model.isWifiDppHandshaking()) {
return;
}
int code = statusCode.intValue();
Log.d(TAG, "Easy connect enrollee callback onFailure " + code);
new EasyConnectEnrolleeStatusCallback().onFailure(code);
});
}
@Override
public void onPause() {
try{
if (mCamera != null) {
mCamera.stopScanning();
}
} catch (Exception e) {
e.printStackTrace();
}
super.onPause();
}
@Override
public void onResume() {
super.onResume();
if (!isWifiDppHandshaking()) {
restartCamera();
}
}
@Override
public int getMetricsCategory() {
if (mIsConfiguratorMode) {
return SettingsEnums.SETTINGS_WIFI_DPP_CONFIGURATOR;
} else {
return SettingsEnums.SETTINGS_WIFI_DPP_ENROLLEE;
}
}
// Container Activity must implement this interface
public interface OnScanWifiDppSuccessListener {
void onScanWifiDppSuccess(WifiQrCode wifiQrCode);
}
private OnScanWifiDppSuccessListener mScanWifiDppSuccessListener;
/**
* Configurator container activity of the fragment should create instance with this constructor.
*/
public WifiDppQrCodeScannerFragment() {
super();
mIsConfiguratorMode = true;
}
public WifiDppQrCodeScannerFragment(WifiPickerTracker wifiPickerTracker,
WifiPermissionChecker wifiPermissionChecker) {
super();
mIsConfiguratorMode = true;
mWifiPickerTracker = wifiPickerTracker;
mWifiPermissionChecker = wifiPermissionChecker;
}
/**
* Enrollee container activity of the fragment should create instance with this constructor and
* specify the SSID string of the WI-Fi network to be provisioned.
*/
WifiDppQrCodeScannerFragment(String ssid) {
super();
mIsConfiguratorMode = false;
mSsid = ssid;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
mWorkerThread = new HandlerThread(
TAG + "{" + Integer.toHexString(System.identityHashCode(this)) + "}",
Process.THREAD_PRIORITY_BACKGROUND);
mWorkerThread.start();
final Clock elapsedRealtimeClock = new SimpleClock(ZoneOffset.UTC) {
@Override
public long millis() {
return SystemClock.elapsedRealtime();
}
};
final Context context = getContext();
mWifiPickerTracker = FeatureFactory.getFactory(context)
.getWifiTrackerLibProvider()
.createWifiPickerTracker(getSettingsLifecycle(), context,
new Handler(Looper.getMainLooper()),
mWorkerThread.getThreadHandler(),
elapsedRealtimeClock,
MAX_SCAN_AGE_MILLIS,
SCAN_INTERVAL_MILLIS,
null /* listener */);
// setTitle for TalkBack
if (mIsConfiguratorMode) {
getActivity().setTitle(R.string.wifi_dpp_add_device_to_network);
} else {
getActivity().setTitle(R.string.wifi_dpp_scan_qr_code);
}
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
mScanWifiDppSuccessListener = (OnScanWifiDppSuccessListener) context;
}
@Override
public void onDetach() {
mScanWifiDppSuccessListener = null;
super.onDetach();
}
@Override
public void onDestroyView() {
mWorkerThread.quit();
super.onDestroyView();
}
@Override
public final View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.wifi_dpp_qrcode_scanner_fragment, container,
/* attachToRoot */ false);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mSummary = view.findViewById(R.id.sud_layout_subtitle);
mTextureView = view.findViewById(R.id.preview_view);
mTextureView.setSurfaceTextureListener(this);
mDecorateView = view.findViewById(R.id.decorate_view);
setProgressBarShown(isWifiDppHandshaking());
if (mIsConfiguratorMode) {
setHeaderTitle(R.string.wifi_dpp_add_device_to_network);
WifiNetworkConfig wifiNetworkConfig = ((WifiNetworkConfig.Retriever) getActivity())
.getWifiNetworkConfig();
if (!WifiNetworkConfig.isValidConfig(wifiNetworkConfig)) {
throw new IllegalStateException("Invalid Wi-Fi network for configuring");
}
mSummary.setText(getString(R.string.wifi_dpp_center_qr_code,
wifiNetworkConfig.getSsid()));
} else {
setHeaderTitle(R.string.wifi_dpp_scan_qr_code);
updateEnrolleeSummary();
}
mErrorMessage = view.findViewById(R.id.error_message);
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
menu.removeItem(Menu.FIRST);
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
initCamera(surface);
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
// Do nothing
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
destroyCamera();
return true;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
// Do nothing
}
@Override
public Size getViewSize() {
return new Size(mTextureView.getWidth(), mTextureView.getHeight());
}
@Override
public Rect getFramePosition(Size previewSize, int cameraOrientation) {
return new Rect(0, 0, previewSize.getHeight(), previewSize.getHeight());
}
@Override
public void setTransform(Matrix transform) {
mTextureView.setTransform(transform);
}
@Override
public boolean isValid(String qrCode) {
try {
mWifiQrCode = new WifiQrCode(qrCode);
} catch (IllegalArgumentException e) {
showErrorMessage(R.string.wifi_dpp_qr_code_is_not_valid_format);
return false;
}
// It's impossible to provision other device with ZXing Wi-Fi Network config format
final String scheme = mWifiQrCode.getScheme();
if (mIsConfiguratorMode && WifiQrCode.SCHEME_ZXING_WIFI_NETWORK_CONFIG.equals(scheme)) {
showErrorMessage(R.string.wifi_dpp_qr_code_is_not_valid_format);
return false;
}
return true;
}
/**
* This method is only called when QrCamera.ScannerCallback.isValid returns true;
*/
@Override
public void handleSuccessfulResult(String qrCode) {
switch (mWifiQrCode.getScheme()) {
case WifiQrCode.SCHEME_DPP:
handleWifiDpp();
break;
case WifiQrCode.SCHEME_ZXING_WIFI_NETWORK_CONFIG:
handleZxingWifiFormat();
break;
default:
// continue below
}
}
private void handleWifiDpp() {
Message message = mHandler.obtainMessage(MESSAGE_SCAN_WIFI_DPP_SUCCESS);
message.obj = new WifiQrCode(mWifiQrCode.getQrCode());
mHandler.sendMessageDelayed(message, SHOW_SUCCESS_SQUARE_INTERVAL);
}
private void handleZxingWifiFormat() {
Message message = mHandler.obtainMessage(MESSAGE_SCAN_ZXING_WIFI_FORMAT_SUCCESS);
message.obj = new WifiQrCode(mWifiQrCode.getQrCode()).getWifiNetworkConfig();
mHandler.sendMessageDelayed(message, SHOW_SUCCESS_SQUARE_INTERVAL);
}
@Override
public void handleCameraFailure() {
destroyCamera();
}
private void initCamera(SurfaceTexture surface) {
// Check if the camera has already created.
if (mCamera == null) {
mCamera = new ModernQrScanner(getContext());
if (isWifiDppHandshaking()) {
if (mDecorateView != null) {
mDecorateView.setFocused(true);
}
} else {
mCamera.startScanning(new Surface(surface), scanListener);
}
}
}
private void destroyCamera() {
if (mCamera != null) {
mCamera.stopScanning();
mCamera.release();
mCamera = null;
}
}
private void showErrorMessage(@StringRes int messageResId) {
final Message message = mHandler.obtainMessage(MESSAGE_SHOW_ERROR_MESSAGE,
getString(messageResId));
message.sendToTarget();
}
@VisibleForTesting
void showErrorMessageAndRestartCamera(@StringRes int messageResId) {
final Message message = mHandler.obtainMessage(MESSAGE_SHOW_ERROR_MESSAGE,
getString(messageResId));
message.arg1 = ARG_RESTART_CAMERA;
message.sendToTarget();
}
@Override
public void onSaveInstanceState(Bundle outState) {
outState.putBoolean(KEY_IS_CONFIGURATOR_MODE, mIsConfiguratorMode);
outState.putInt(KEY_LATEST_ERROR_CODE, mLatestStatusCode);
outState.putParcelable(KEY_WIFI_CONFIGURATION, mEnrolleeWifiConfiguration);
super.onSaveInstanceState(outState);
}
private class EasyConnectEnrolleeStatusCallback extends EasyConnectStatusCallback {
@Override
public void onEnrolleeSuccess(int newNetworkId) {
// Connect to the new network.
final WifiManager wifiManager = getContext().getSystemService(WifiManager.class);
final List<WifiConfiguration> wifiConfigs =
wifiManager.getPrivilegedConfiguredNetworks();
for (WifiConfiguration wifiConfig : wifiConfigs) {
if (wifiConfig.networkId == newNetworkId) {
mLatestStatusCode = WifiDppUtils.EASY_CONNECT_EVENT_SUCCESS;
mEnrolleeWifiConfiguration = wifiConfig;
if (!canConnectWifi(wifiConfig.SSID)) return;
wifiManager.connect(wifiConfig, WifiDppQrCodeScannerFragment.this);
return;
}
}
Log.e(TAG, "Invalid networkId " + newNetworkId);
mLatestStatusCode = EasyConnectStatusCallback.EASY_CONNECT_EVENT_FAILURE_GENERIC;
updateEnrolleeSummary();
showErrorMessageAndRestartCamera(R.string.wifi_dpp_check_connection_try_again);
}
@Override
public void onConfiguratorSuccess(int code) {
// Do nothing
}
@Override
public void onFailure(int code) {
Log.d(TAG, "EasyConnectEnrolleeStatusCallback.onFailure " + code);
int errorMessageResId;
switch (code) {
case EasyConnectStatusCallback.EASY_CONNECT_EVENT_FAILURE_INVALID_URI:
errorMessageResId = R.string.wifi_dpp_qr_code_is_not_valid_format;
break;
case EasyConnectStatusCallback.EASY_CONNECT_EVENT_FAILURE_AUTHENTICATION:
errorMessageResId = R.string.wifi_dpp_failure_authentication_or_configuration;
break;
case EasyConnectStatusCallback.EASY_CONNECT_EVENT_FAILURE_NOT_COMPATIBLE:
errorMessageResId = R.string.wifi_dpp_failure_not_compatible;
break;
case EasyConnectStatusCallback.EASY_CONNECT_EVENT_FAILURE_CONFIGURATION:
errorMessageResId = R.string.wifi_dpp_failure_authentication_or_configuration;
break;
case EasyConnectStatusCallback.EASY_CONNECT_EVENT_FAILURE_BUSY:
if (code == mLatestStatusCode) {
throw (new IllegalStateException("stopEasyConnectSession and try again for"
+ "EASY_CONNECT_EVENT_FAILURE_BUSY but still failed"));
}
mLatestStatusCode = code;
final WifiManager wifiManager =
getContext().getSystemService(WifiManager.class);
wifiManager.stopEasyConnectSession();
startWifiDppEnrolleeInitiator(mWifiQrCode);
return;
case EasyConnectStatusCallback.EASY_CONNECT_EVENT_FAILURE_TIMEOUT:
errorMessageResId = R.string.wifi_dpp_failure_timeout;
break;
case EasyConnectStatusCallback.EASY_CONNECT_EVENT_FAILURE_GENERIC:
errorMessageResId = R.string.wifi_dpp_failure_generic;
break;
case EasyConnectStatusCallback.EASY_CONNECT_EVENT_FAILURE_NOT_SUPPORTED:
throw (new IllegalStateException("EASY_CONNECT_EVENT_FAILURE_NOT_SUPPORTED" +
" should be a configurator only error"));
case EasyConnectStatusCallback.EASY_CONNECT_EVENT_FAILURE_INVALID_NETWORK:
throw (new IllegalStateException("EASY_CONNECT_EVENT_FAILURE_INVALID_NETWORK" +
" should be a configurator only error"));
default:
throw (new IllegalStateException("Unexpected Wi-Fi DPP error"));
}
mLatestStatusCode = code;
updateEnrolleeSummary();
showErrorMessageAndRestartCamera(errorMessageResId);
}
@Override
public void onProgress(int code) {
// Do nothing
}
}
private void startWifiDppEnrolleeInitiator(WifiQrCode wifiQrCode) {
final WifiDppInitiatorViewModel model =
ViewModelProviders.of(this).get(WifiDppInitiatorViewModel.class);
model.startEasyConnectAsEnrolleeInitiator(wifiQrCode.getQrCode());
}
@Override
public void onSuccess() {
final Intent resultIntent = new Intent();
resultIntent.putExtra(KEY_WIFI_CONFIGURATION, mEnrolleeWifiConfiguration);
final Activity hostActivity = getActivity();
if (hostActivity == null) return;
if (mWifiPermissionChecker == null) {
mWifiPermissionChecker = new WifiPermissionChecker(hostActivity);
}
if (!mWifiPermissionChecker.canAccessWifiState()) {
Log.w(TAG, "Calling package does not have ACCESS_WIFI_STATE permission for result.");
EventLog.writeEvent(0x534e4554, "187176859",
mWifiPermissionChecker.getLaunchedPackage(), "no ACCESS_WIFI_STATE permission");
hostActivity.finish();
return;
}
if (!mWifiPermissionChecker.canAccessFineLocation()) {
Log.w(TAG, "Calling package does not have ACCESS_FINE_LOCATION permission for result.");
EventLog.writeEvent(0x534e4554, "187176859",
mWifiPermissionChecker.getLaunchedPackage(),
"no ACCESS_FINE_LOCATION permission");
hostActivity.finish();
return;
}
hostActivity.setResult(Activity.RESULT_OK, resultIntent);
hostActivity.finish();
}
@Override
public void onFailure(int reason) {
Log.d(TAG, "Wi-Fi connect onFailure reason - " + reason);
showErrorMessageAndRestartCamera(R.string.wifi_dpp_check_connection_try_again);
}
// Check is Easy Connect handshaking or not
private boolean isWifiDppHandshaking() {
final WifiDppInitiatorViewModel model =
ViewModelProviders.of(this).get(WifiDppInitiatorViewModel.class);
return model.isWifiDppHandshaking();
}
/**
* To resume camera decoding task after handshake fail or Wi-Fi connection fail.
*/
private void restartCamera() {
if (mCamera == null) {
Log.d(TAG, "mCamera is not available for restarting camera");
return;
}
if (mCamera.isScanning()) {
mCamera.stopScanning();
}
mCamera.release();
mCamera = null;
final SurfaceTexture surfaceTexture = mTextureView.getSurfaceTexture();
if (surfaceTexture == null) {
throw new IllegalStateException("SurfaceTexture is not ready for restarting camera");
}
mCamera = new ModernQrScanner(getContext());
mCamera.startScanning(mTextureView, scanListener);
}
private ModernQrScanner.ScanCallback scanListener = new ModernQrScanner.ScanCallback() {
@Override
public void onScanSuccess(String result, BarcodeFormat format) {
if (isValid(result)) {
handleSuccessfulResult(result);
} else {
mCamera.resumeScanning();
}
}
@Override
public void onScanError(String error) {
}
@Override
public void onCameraStateChanged(boolean isOpen) {
}
@Override
public Rect getScanRect(Size previewSize) {
return null;
}
@Override
public void testGetScan(Bitmap bitmap) {
}
};
private void updateEnrolleeSummary() {
if (isWifiDppHandshaking()) {
mSummary.setText(R.string.wifi_dpp_connecting);
} else {
String description;
if (TextUtils.isEmpty(mSsid)) {
description = getString(R.string.wifi_dpp_scan_qr_code_join_unknown_network, mSsid);
} else {
description = getString(R.string.wifi_dpp_scan_qr_code_join_network, mSsid);
}
mSummary.setText(description);
}
}
@VisibleForTesting
protected boolean isDecodeTaskAlive() {
return mCamera != null && mCamera.isScanning();
}
@Override
protected boolean isFooterAvailable() {
return false;
}
}下载最新的Zxing包。放到Setting下的 libs文件夹。
添加Android.bp 对Zxing的引用。
java_import {
name: "zxing-core3.5.3",
jars: ["libs/zxing_core_3.5.3.jar"],
}修改引用包
static_libs: [
"androidx-constraintlayout_constraintlayout",
"androidx.slice_slice-builders",
"androidx.slice_slice-core",
"androidx.slice_slice-view",
"androidx.core_core",
"androidx.appcompat_appcompat",
"androidx.cardview_cardview",
"androidx.preference_preference",
"androidx.recyclerview_recyclerview",
"androidx.window_window",
"com.google.android.material_material",
"setupcompat",
"setupdesign",
"androidx.lifecycle_lifecycle-runtime",
"androidx.lifecycle_lifecycle-extensions",
"guava",
"jsr305",
"net-utils-framework-common",
"settings-contextual-card-protos-lite",
"settings-log-bridge-protos-lite",
"settings-telephony-protos-lite",
"contextualcards",
"settings-logtags",
"statslog-settings",
// "zxing-core-1.7", 这里进行了引用修改
"zxing-core3.5.3",
"android.hardware.dumpstate-V1.0-java",
"android.hardware.dumpstate-V1.1-java",
"lottie",
"WifiTrackerLib",
"SettingsLibActivityEmbedding",
],