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Commit 4b0ab65c authored by Dave Mankoff's avatar Dave Mankoff
Browse files

Fix removing callbacks from KeyguardUpdateMonitor. 

Ensure that all access to mCallbacks is done via the handler
thread.

I also ran an auto-formatter on the code on this file, hence a
lot of random whitespace and new line changes.

Bug: 139051615
Test: atest SystemUITests
Change-Id: Ic12281aa6aedca2fe7c0e8399a09cce6ae3126fd
parent 68dd1b19

packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java

+113 −75
Original line number Diff line number Diff line
@@ -345,7 +345,8 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
                    Trace.endSection();

                    break;

                case MSG_FACE_UNLOCK_STATE_CHANGED:

                    Trace.beginSection("KeyguardUpdateMonitor#handler MSG_FACE_UNLOCK_STATE_CHANGED");

                    Trace.beginSection(

                            "KeyguardUpdateMonitor#handler MSG_FACE_UNLOCK_STATE_CHANGED");

                    handleFaceUnlockStateChanged(msg.arg1 != 0, msg.arg2);

                    Trace.endSection();

                    break;
@@ -459,6 +460,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void handleSimSubscriptionInfoChanged() {

        checkIsHandlerThread();

        if (DEBUG_SIM_STATES) {

            Log.v(TAG, "onSubscriptionInfoChanged()");

            List<SubscriptionInfo> sil = mSubscriptionManager.getActiveSubscriptionInfoList(false);
@@ -492,17 +494,17 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
                }

            }

        }

        for (int j = 0; j < mCallbacks.size(); j++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(j).get();

            if (cb != null) {

                cb.onRefreshCarrierInfo();

            }

        }

        callbacksRefreshCarrierInfo();

    }



    private void handleAirplaneModeChanged() {

        for (int j = 0; j < mCallbacks.size(); j++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(j).get();

        callbacksRefreshCarrierInfo();

    }



    private void callbacksRefreshCarrierInfo() {

        checkIsHandlerThread();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {

                cb.onRefreshCarrierInfo();

            }
@@ -528,7 +530,6 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    public void onTrustManagedChanged(boolean managed, int userId) {

        checkIsHandlerThread();

        mUserTrustIsManaged.put(userId, managed);



        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {
@@ -539,7 +540,6 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 


    /**

     * Updates KeyguardUpdateMonitor's internal state to know if keyguard is goingAway

     * @param goingAway

     */

    public void setKeyguardGoingAway(boolean goingAway) {

        mKeyguardGoingAway = goingAway;
@@ -548,7 +548,6 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 


    /**

     * Updates KeyguardUpdateMonitor's internal state to know if keyguard is occluded

     * @param occluded

     */

    public void setKeyguardOccluded(boolean occluded) {

        mKeyguardOccluded = occluded;
@@ -585,6 +584,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 


    @VisibleForTesting

    protected void onFingerprintAuthenticated(int userId) {

        checkIsHandlerThread();

        Trace.beginSection("KeyGuardUpdateMonitor#onFingerPrintAuthenticated");

        mUserFingerprintAuthenticated.put(userId, true);

        // Update/refresh trust state only if user can skip bouncer
@@ -610,6 +610,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void handleFingerprintAuthFailed() {

        checkIsHandlerThread();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {
@@ -621,6 +622,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void handleFingerprintAcquired(int acquireInfo) {

        checkIsHandlerThread();

        if (acquireInfo != FingerprintManager.FINGERPRINT_ACQUIRED_GOOD) {

            return;

        }
@@ -658,6 +660,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void handleFingerprintHelp(int msgId, String helpString) {

        checkIsHandlerThread();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {
@@ -676,6 +679,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    };



    private void handleFingerprintError(int msgId, String errString) {

        checkIsHandlerThread();

        if (msgId == FingerprintManager.FINGERPRINT_ERROR_CANCELED && mHandler.hasCallbacks(

                mCancelNotReceived)) {

            mHandler.removeCallbacks(mCancelNotReceived);
@@ -741,6 +745,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    @VisibleForTesting

    protected void onFaceAuthenticated(int userId) {

        Trace.beginSection("KeyGuardUpdateMonitor#onFaceAuthenticated");

        checkIsHandlerThread();

        mUserFaceAuthenticated.put(userId, true);

        // Update/refresh trust state only if user can skip bouncer

        if (getUserCanSkipBouncer(userId)) {
@@ -766,6 +771,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void handleFaceAuthFailed() {

        checkIsHandlerThread();

        setFaceRunningState(BIOMETRIC_STATE_STOPPED);

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();
@@ -778,6 +784,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void handleFaceAcquired(int acquireInfo) {

        checkIsHandlerThread();

        if (acquireInfo != FaceManager.FACE_ACQUIRED_GOOD) {

            return;

        }
@@ -821,6 +828,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void handleFaceHelp(int msgId, String helpString) {

        checkIsHandlerThread();

        if (DEBUG_FACE) Log.d(TAG, "Face help received: " + helpString);

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();
@@ -840,6 +848,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    };



    private void handleFaceError(int msgId, String errString) {

        checkIsHandlerThread();

        if (DEBUG_FACE) Log.d(TAG, "Face error received: " + errString);

        if (msgId == FaceManager.FACE_ERROR_CANCELED && mHandler.hasCallbacks(mCancelNotReceived)) {

            mHandler.removeCallbacks(mCancelNotReceived);
@@ -894,6 +903,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void notifyFaceRunningStateChanged() {

        checkIsHandlerThread();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {
@@ -1013,6 +1023,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void dispatchErrorMessage(CharSequence message) {

        checkIsHandlerThread();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {
@@ -1092,7 +1103,8 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
                }

                if (DEBUG_SIM_STATES) {

                    Log.v(TAG, "action " + action

                        + " state: " + intent.getStringExtra(IccCardConstants.INTENT_KEY_ICC_STATE)

                            + " state: " + intent.getStringExtra(

                            IccCardConstants.INTENT_KEY_ICC_STATE)

                            + " slotId: " + args.slotId + " subid: " + args.subId);

                }

                mHandler.obtainMessage(MSG_SIM_STATE_CHANGE, args.subId, args.slotId, args.simState)
@@ -1138,7 +1150,9 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
                mHandler.sendMessage(mHandler.obtainMessage(MSG_USER_INFO_CHANGED,

                        intent.getIntExtra(Intent.EXTRA_USER_HANDLE, getSendingUserId()), 0));

            } else if (ACTION_FACE_UNLOCK_STARTED.equals(action)) {

                Trace.beginSection("KeyguardUpdateMonitor.mBroadcastAllReceiver#onReceive ACTION_FACE_UNLOCK_STARTED");

                Trace.beginSection(

                        "KeyguardUpdateMonitor.mBroadcastAllReceiver#onReceive "

                                + "ACTION_FACE_UNLOCK_STARTED");

                mHandler.sendMessage(mHandler.obtainMessage(MSG_FACE_UNLOCK_STATE_CHANGED, 1,

                        getSendingUserId()));

                Trace.endSection();
@@ -1319,6 +1333,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
        public final int plugged;

        public final int health;

        public final int maxChargingWattage;



        public BatteryStatus(int status, int level, int plugged, int health,

                int maxChargingWattage) {

            this.status = status;
@@ -1330,6 +1345,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 


        /**

         * Determine whether the device is plugged in (USB, power, or wireless).

         *

         * @return true if the device is plugged in.

         */

        public boolean isPluggedIn() {
@@ -1340,6 +1356,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 


        /**

         * Determine whether the device is plugged in (USB, power).

         *

         * @return true if the device is plugged in wired (as opposed to wireless)

         */

        public boolean isPluggedInWired() {
@@ -1351,6 +1368,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
         * Whether or not the device is charged. Note that some devices never return 100% for

         * battery level, so this allows either battery level or status to determine if the

         * battery is charged.

         *

         * @return true if the device is charged

         */

        public boolean isCharged() {
@@ -1359,6 +1377,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 


        /**

         * Whether battery is low and needs to be charged.

         *

         * @return true if battery is low

         */

        public boolean isBatteryLow() {
@@ -1414,9 +1433,9 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 


    protected void handleStartedWakingUp() {

        Trace.beginSection("KeyguardUpdateMonitor#handleStartedWakingUp");

        checkIsHandlerThread();

        updateBiometricListeningState();

        final int count = mCallbacks.size();

        for (int i = 0; i < count; i++) {

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {

                cb.onStartedWakingUp();
@@ -1426,9 +1445,9 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    protected void handleStartedGoingToSleep(int arg1) {

        checkIsHandlerThread();

        clearBiometricRecognized();

        final int count = mCallbacks.size();

        for (int i = 0; i < count; i++) {

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {

                cb.onStartedGoingToSleep(arg1);
@@ -1439,9 +1458,9 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    protected void handleFinishedGoingToSleep(int arg1) {

        checkIsHandlerThread();

        mGoingToSleep = false;

        final int count = mCallbacks.size();

        for (int i = 0; i < count; i++) {

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {

                cb.onFinishedGoingToSleep(arg1);
@@ -1451,8 +1470,8 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void handleScreenTurnedOn() {

        final int count = mCallbacks.size();

        for (int i = 0; i < count; i++) {

        checkIsHandlerThread();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {

                cb.onScreenTurnedOn();
@@ -1461,11 +1480,11 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void handleScreenTurnedOff() {

        checkIsHandlerThread();

        mLockIconPressed = false;

        mHardwareFingerprintUnavailableRetryCount = 0;

        mHardwareFaceUnavailableRetryCount = 0;

        final int count = mCallbacks.size();

        for (int i = 0; i < count; i++) {

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {

                cb.onScreenTurnedOff();
@@ -1474,9 +1493,9 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void handleDreamingStateChanged(int dreamStart) {

        final int count = mCallbacks.size();

        checkIsHandlerThread();

        mIsDreaming = dreamStart == 1;

        for (int i = 0; i < count; i++) {

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {

                cb.onDreamingStateChanged(mIsDreaming);
@@ -1486,6 +1505,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void handleUserInfoChanged(int userId) {

        checkIsHandlerThread();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {
@@ -1495,6 +1515,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    private void handleUserUnlocked() {

        checkIsHandlerThread();

        mNeedsSlowUnlockTransition = resolveNeedsSlowUnlockTransition();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();
@@ -1559,6 +1580,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
                            mHandler.sendMessage(mHandler.obtainMessage(MSG_USER_SWITCHING,

                                    newUserId, 0, reply));

                        }



                        @Override

                        public void onUserSwitchComplete(int newUserId) throws RemoteException {

                            mHandler.sendMessage(mHandler.obtainMessage(MSG_USER_SWITCH_COMPLETE,
@@ -1644,6 +1666,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 


    /**

     * Called whenever passive authentication is requested or aborted by a sensor.

     *

     * @param active If the interrupt started or ended.

     */

    public void onAuthInterruptDetected(boolean active) {
@@ -1891,7 +1914,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
        checkIsHandlerThread();

        if (hasLockscreenWallpaper != mHasLockscreenWallpaper) {

            mHasLockscreenWallpaper = hasLockscreenWallpaper;

            for (int i = mCallbacks.size() - 1; i >= 0; i--) {

            for (int i = 0; i < mCallbacks.size(); i++) {

                KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

                if (cb != null) {

                    cb.onHasLockscreenWallpaperChanged(hasLockscreenWallpaper);
@@ -1911,8 +1934,9 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     * Handle {@link #MSG_DPM_STATE_CHANGED}

     */

    private void handleDevicePolicyManagerStateChanged() {

        checkIsHandlerThread();

        updateFingerprintListeningState();

        for (int i = mCallbacks.size() - 1; i >= 0; i--) {

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {

                cb.onDevicePolicyManagerStateChanged();
@@ -1924,6 +1948,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     * Handle {@link #MSG_USER_SWITCHING}

     */

    private void handleUserSwitching(int userId, IRemoteCallback reply) {

        checkIsHandlerThread();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {
@@ -1940,6 +1965,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     * Handle {@link #MSG_USER_SWITCH_COMPLETE}

     */

    private void handleUserSwitchComplete(int userId) {

        checkIsHandlerThread();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {
@@ -1962,6 +1988,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     * Handle {@link #MSG_BOOT_COMPLETED}

     */

    private void handleBootCompleted() {

        checkIsHandlerThread();

        if (mBootCompleted) return;

        mBootCompleted = true;

        for (int i = 0; i < mCallbacks.size(); i++) {
@@ -1984,6 +2011,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     * Handle {@link #MSG_DEVICE_PROVISIONED}

     */

    private void handleDeviceProvisioned() {

        checkIsHandlerThread();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {
@@ -2001,6 +2029,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     * Handle {@link #MSG_PHONE_STATE_CHANGED}

     */

    private void handlePhoneStateChanged(String newState) {

        checkIsHandlerThread();

        if (DEBUG) Log.d(TAG, "handlePhoneStateChanged(" + newState + ")");

        if (TelephonyManager.EXTRA_STATE_IDLE.equals(newState)) {

            mPhoneState = TelephonyManager.CALL_STATE_IDLE;
@@ -2021,6 +2050,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     * Handle {@link #MSG_RINGER_MODE_CHANGED}

     */

    private void handleRingerModeChange(int mode) {

        checkIsHandlerThread();

        if (DEBUG) Log.d(TAG, "handleRingerModeChange(" + mode + ")");

        mRingMode = mode;

        for (int i = 0; i < mCallbacks.size(); i++) {
@@ -2035,6 +2065,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     * Handle {@link #MSG_TIME_UPDATE}

     */

    private void handleTimeUpdate() {

        checkIsHandlerThread();

        if (DEBUG) Log.d(TAG, "handleTimeUpdate");

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();
@@ -2048,6 +2079,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     * Handle (@line #MSG_TIMEZONE_UPDATE}

     */

    private void handleTimeZoneUpdate(String timeZone) {

        checkIsHandlerThread();

        if (DEBUG) Log.d(TAG, "handleTimeZoneUpdate");

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();
@@ -2063,6 +2095,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     * Handle {@link #MSG_BATTERY_UPDATE}

     */

    private void handleBatteryUpdate(BatteryStatus status) {

        checkIsHandlerThread();

        if (DEBUG) Log.d(TAG, "handleBatteryUpdate");

        final boolean batteryUpdateInteresting = isBatteryUpdateInteresting(mBatteryStatus, status);

        mBatteryStatus = status;
@@ -2081,12 +2114,13 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     */

    @VisibleForTesting

    void updateTelephonyCapable(boolean capable) {

        checkIsHandlerThread();

        if (capable == mTelephonyCapable) {

            return;

        }

        mTelephonyCapable = capable;

        for (WeakReference<KeyguardUpdateMonitorCallback> ref : mCallbacks) {

            KeyguardUpdateMonitorCallback cb = ref.get();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {

                cb.onTelephonyCapable(mTelephonyCapable);

            }
@@ -2169,12 +2203,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 


        mServiceStates.put(subId, serviceState);



        for (int j = 0; j < mCallbacks.size(); j++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(j).get();

            if (cb != null) {

                cb.onRefreshCarrierInfo();

            }

        }

        callbacksRefreshCarrierInfo();

    }



    public boolean isKeyguardVisible() {
@@ -2226,9 +2255,11 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 


    /**

     * Handle {@link #MSG_KEYGUARD_BOUNCER_CHANGED}

     *

     * @see #sendKeyguardBouncerChanged(boolean)

     */

    private void handleKeyguardBouncerChanged(int bouncer) {

        checkIsHandlerThread();

        if (DEBUG) Log.d(TAG, "handleKeyguardBouncerChanged(" + bouncer + ")");

        boolean isBouncer = (bouncer == 1);

        mBouncer = isBouncer;
@@ -2254,6 +2285,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     * Handle {@link #MSG_REPORT_EMERGENCY_CALL_ACTION}

     */

    private void handleReportEmergencyCallAction() {

        checkIsHandlerThread();

        for (int i = 0; i < mCallbacks.size(); i++) {

            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

            if (cb != null) {
@@ -2293,31 +2325,34 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
     */

    public void removeCallback(KeyguardUpdateMonitorCallback callback) {

        checkIsHandlerThread();

        if (DEBUG) Log.v(TAG, "*** unregister callback for " + callback);

        for (int i = mCallbacks.size() - 1; i >= 0; i--) {

            if (mCallbacks.get(i).get() == callback) {

                mCallbacks.remove(i);

            }

        if (DEBUG) {

            Log.v(TAG, "*** unregister callback for " + callback);

        }



        mCallbacks.removeIf(el -> el.get() == callback);

    }



    /**

     * Register to receive notifications about general keyguard information

     * (see {@link InfoCallback}.

     *

     * @param callback The callback to register

     */

    public void registerCallback(KeyguardUpdateMonitorCallback callback) {

        checkIsHandlerThread();

        if (DEBUG) Log.v(TAG, "*** register callback for " + callback);

        // Prevent adding duplicate callbacks



        for (int i = 0; i < mCallbacks.size(); i++) {

            if (mCallbacks.get(i).get() == callback) {

                if (DEBUG) Log.e(TAG, "Object tried to add another callback",

                if (DEBUG) {

                    Log.e(TAG, "Object tried to add another callback",

                            new Exception("Called by"));

                }

                return;

            }

        }

        mCallbacks.add(new WeakReference<KeyguardUpdateMonitorCallback>(callback));

        mCallbacks.add(new WeakReference<>(callback));

        removeCallback(null); // remove unused references

        sendUpdates(callback);

    }
@@ -2412,6 +2447,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
    }



    public void clearBiometricRecognized() {

        checkIsHandlerThread();

        mUserFingerprintAuthenticated.clear();

        mUserFaceAuthenticated.clear();

        mTrustManager.clearAllBiometricRecognized(BiometricSourceType.FINGERPRINT);
@@ -2432,6 +2468,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 


    /**

     * If any SIM cards are currently secure.

     *

     * @see #isSimPinSecure(State)

     */

    public boolean isSimPinSecure() {
@@ -2564,7 +2601,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 


    /**

     * Find the next SubscriptionId for a SIM in the given state, favoring lower slot numbers first.

     * @param state

     *

     * @return subid or {@link SubscriptionManager#INVALID_SUBSCRIPTION_ID} if none found

     */

    public int getNextSubIdForState(State state) {
@@ -2604,6 +2641,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener { 
        boolean logoutEnabled = mDevicePolicyManager.isLogoutEnabled();

        if (mLogoutEnabled != logoutEnabled) {

            mLogoutEnabled = logoutEnabled;



            for (int i = 0; i < mCallbacks.size(); i++) {

                KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();

                if (cb != null) {