Fix bug 7338736. Only starting FUL if the screen is on

package com.android.internal.policy.impl.keyguard;

import android.content.Context;

import android.os.PowerManager;

import android.telephony.TelephonyManager;

import android.util.AttributeSet;

import android.util.Log;

public class KeyguardFaceUnlockView extends LinearLayout implements KeyguardSecurityView {

    private static final String TAG = "KeyguardFaceUnlockView";

    private static final String TAG = "FULKeyguardFaceUnlockView";

    private static final boolean DEBUG = false;

    private KeyguardSecurityCallback mKeyguardSecurityCallback;

    private LockPatternUtils mLockPatternUtils;

            final boolean backupIsTimedOut = (

                    monitor.getFailedUnlockAttempts() >=

                    LockPatternUtils.FAILED_ATTEMPTS_BEFORE_TIMEOUT);

            // TODO: These max attempts checks are also checked in KeyguardSecurityModel so they

            // might not be necessary here anymore.

            PowerManager powerManager = (PowerManager) mContext.getSystemService(

                    Context.POWER_SERVICE);

            // TODO: Some of these conditions are handled in KeyguardSecurityModel and may not be

            // necessary here.

            if (monitor.getPhoneState() != TelephonyManager.CALL_STATE_RINGING

                    && !monitor.getMaxBiometricUnlockAttemptsReached()

                    && !backupIsTimedOut) {

                    && !backupIsTimedOut

                    && powerManager.isScreenOn()) {

                mBiometricUnlock.start();

            } else {

                mBiometricUnlock.stopAndShowBackup();