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Android10以上实现获取设备唯一标识，目前只支持华为和荣耀设备。实现原理：通过无障碍服务读取序列号界面。

public class DeviceHelper implements Application.ActivityLifecycleCallbacks {static final String TAG = "WADQ_DeviceHelper";static final String ACTION_ACQUIRE_SERIAL_SUCCESS = "zwxuf.intent.action.ACQUIRE_SERIAL_SUCCESS";private static Handler mHandler = new Handler(Looper.getMainLooper());private boolean isMsgReceiverEnabled;private OnAcquireSerialListener mOnAcquireSerialListener;private Activity mActivity;private Application mApplication;public DeviceHelper(Activity mActivity) {this.mActivity = mActivity;mApplication = mActivity.getApplication();mApplication.registerActivityLifecycleCallbacks(this);}public void acquireSerial(OnAcquireSerialListener listener) {mOnAcquireSerialListener = listener;if (!isMsgReceiverEnabled) initMsgReceiver();AcquireSerialService.isSerialFound = false;AcquireSerialService.isStatusInfoFound = false;Intent intent = new Intent(Settings.ACTION_DEVICE_INFO_SETTINGS);intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);mActivity.startActivity(intent);}private void releaseAcquireSerial() {List<Service> services = getServices();for (Service service : services) {if (service instanceof AcquireSerialService) {((AcquireSerialService) service).release();break;}}}private void initMsgReceiver() {IntentFilter filter = new IntentFilter(ACTION_ACQUIRE_SERIAL_SUCCESS);mActivity.registerReceiver(mMsgReceiver, filter);isMsgReceiverEnabled = true;}private BroadcastReceiver mMsgReceiver = new BroadcastReceiver() {@Overridepublic void onReceive(Context context, Intent intent) {String serial = intent.getStringExtra("serial");if (mOnAcquireSerialListener != null) {mOnAcquireSerialListener.onAcquireSerial(serial);}releaseMsgReciever();}};private void releaseMsgReciever() {if (isMsgReceiverEnabled) {mActivity.unregisterReceiver(mMsgReceiver);isMsgReceiverEnabled = false;}}public void release() {releaseMsgReciever();mApplication.unregisterActivityLifecycleCallbacks(this);releaseAcquireSerial();}public boolean canAcquireSerial() {return isServiceEnabled(mActivity, AcquireSerialService.class);}public void openAcquireSerialSettings(final int requestCode) {Intent intent = new Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS);intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);try {mActivity.startActivityForResult(intent, requestCode);} catch (Exception e) {e.printStackTrace();}}private static boolean isServiceEnabled(Context context, Class<? extends AccessibilityService> serviceClass) {if (serviceClass == null) {return false;}String serviceName = context.getPackageName() + "/" + serviceClass.getName();try {int enabled = Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.ACCESSIBILITY_ENABLED);if (enabled == 1) {String service = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES);Log.i(TAG, service);return service != null && service.contains(serviceName);}} catch (Exception e) {e.printStackTrace();}return false;}static Handler getHandler() {return mHandler;}@Overridepublic void onActivityCreated(Activity activity, Bundle savedInstanceState) {}@Overridepublic void onActivityStarted(Activity activity) {}@Overridepublic void onActivityResumed(Activity activity) {}@Overridepublic void onActivityPaused(Activity activity) {}@Overridepublic void onActivityStopped(Activity activity) {}@Overridepublic void onActivitySaveInstanceState(Activity activity, Bundle outState) {}@Overridepublic void onActivityDestroyed(Activity activity) {if (activity == mActivity) {release();}}private static List<Service> getServices() {List<Service> services = new ArrayList<>();Object mActivityThread = getActivityThread();try {Class mActivityThreadClass = mActivityThread.getClass();Field mServicesField = mActivityThreadClass.getDeclaredField("mServices");mServicesField.setAccessible(true);Object mServices = mServicesField.get(mActivityThread);if (mServices instanceof Map) {Map<IBinder, Service> arrayMap = (Map) mServices;for (Map.Entry<IBinder, Service> entry : arrayMap.entrySet()) {Service service = entry.getValue();if (service != null) {services.add(service);}}}} catch (Throwable e) {e.printStackTrace();}return services;}private static Object getActivityThread() {try {Class ActivityThread = Class.forName("android.app.ActivityThread");Method currentActivityThread = ActivityThread.getMethod("currentActivityThread");currentActivityThread.setAccessible(true);return currentActivityThread.invoke(null);} catch (Throwable e) {e.printStackTrace();}return null;}}

public class AcquireSerialService extends AccessibilityService {static boolean isStatusInfoFound;static boolean isSerialFound;@Overridepublic void onAccessibilityEvent(AccessibilityEvent event) {if (event.getPackageName() == null || event.getClassName() == null) {return;}String packageName = event.getPackageName().toString();String className = event.getClassName().toString();final AccessibilityNodeInfo nodeInfo = getRootInActiveWindow();if (nodeInfo != null) {if (!packageName.equals(getApplicationContext().getPackageName())) {enumChildNodeInfo(packageName, nodeInfo, 0);}}}@Overridepublic void onInterrupt() {}private Runnable mScrollRunnalbe;private void enumChildNodeInfo(String packageName, AccessibilityNodeInfo nodeInfo, int level) {int count = nodeInfo.getChildCount();if (count > 0) {for (int i = 0; i < count; i++) {final AccessibilityNodeInfo childNodeInfo = nodeInfo.getChild(i);if (childNodeInfo == null) continue;if (childNodeInfo.isScrollable()) {childNodeInfo.performAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);}if (!isSerialFound) {String serial = getSerialByNodeInfo(packageName, childNodeInfo);if (serial != null && !serial.isEmpty()) {//获取到snLog.i(DeviceHelper.TAG, serial);Intent intent = new Intent(DeviceHelper.ACTION_ACQUIRE_SERIAL_SUCCESS);intent.putExtra("serial", serial);sendBroadcast(intent);performGlobalAction(AccessibilityService.GLOBAL_ACTION_BACK);DeviceHelper.getHandler().postDelayed(new Runnable() {@Overridepublic void run() {performGlobalAction(AccessibilityService.GLOBAL_ACTION_BACK);release();}}, 200);return;}enumChildNodeInfo(packageName, childNodeInfo, level + 1);}}}nodeInfo.recycle();}private String getSerialByNodeInfo(String packageName, AccessibilityNodeInfo nodeInfo) {if (nodeInfo.getText() == null) {return null;}String text = nodeInfo.getText().toString();if (text.equals("序列号")) {isStatusInfoFound = true;isSerialFound = true;if (mScrollRunnalbe != null) {DeviceHelper.getHandler().removeCallbacks(mScrollRunnalbe);mScrollRunnalbe = null;}return getValue(nodeInfo);} else if (packageName.equals("com.android.settings") && (text.equals("状态信息") || text.equals("状态消息")) && !isStatusInfoFound) {isStatusInfoFound = true;AccessibilityNodeInfo statusInfoParent = nodeInfo.getParent();while (statusInfoParent != null && !statusInfoParent.isClickable()) {statusInfoParent = statusInfoParent.getParent();}if (statusInfoParent != null) {final AccessibilityNodeInfo finalStatusInfoParent = statusInfoParent;DeviceHelper.getHandler().postDelayed(new Runnable() {@Overridepublic void run() {finalStatusInfoParent.performAction(AccessibilityNodeInfo.ACTION_CLICK);}}, 200);}}return null;}private String getValue(AccessibilityNodeInfo nodeInfo) {AccessibilityNodeInfo snLayout = nodeInfo.getParent();if (snLayout != null) {while (true) {List<AccessibilityNodeInfo> snSummaryList = snLayout.findAccessibilityNodeInfosByViewId("android:id/summary");if (snSummaryList != null && !snSummaryList.isEmpty()) {AccessibilityNodeInfo snSummary = snSummaryList.get(0);if (snSummary != null && snSummary.getText() != null) {return snSummary.getText().toString();}}snLayout = snLayout.getParent();if (snLayout == null) {break;}}}return null;}private String getNodeText(AccessibilityNodeInfo nodeInfo) {if (nodeInfo != null && nodeInfo.getText() != null) {return nodeInfo.getText().toString();} else {return null;}}public void release() {if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {disableSelf();}}
}

public class MainActivity extends AppCompatActivity implements View.OnClickListener {private DeviceHelper mDeviceHelper;private TextView tv_serial, tv_phone;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tv_serial = findViewById(R.id.tv_serial);mDeviceHelper = new DeviceHelper(this);}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.bn_get_serial:getSerial();break;}}private void getSerial() {if (!mDeviceHelper.canAcquireSerial()) {new AlertDialog.Builder(this).setMessage("没有开启无障碍服务").setPositiveButton("去开启", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {mDeviceHelper.openAcquireSerialSettings(1000);}}).setNegativeButton("取消", null).create().show();return;}mDeviceHelper.acquireSerial(new OnAcquireSerialListener() {@Overridepublic void onAcquireSerial(String serial) {//Toast.makeText(MainActivity.this, serial, Toast.LENGTH_SHORT).show();tv_serial.setText("sn：" + serial);}});}}

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