1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings.biometrics.fingerprint; 18 19 import android.content.Context; 20 import android.hardware.biometrics.BiometricAuthenticator; 21 import android.hardware.fingerprint.FingerprintManager; 22 23 import androidx.annotation.Nullable; 24 import androidx.lifecycle.Lifecycle; 25 import androidx.lifecycle.LifecycleObserver; 26 import androidx.lifecycle.OnLifecycleEvent; 27 import androidx.preference.Preference; 28 import androidx.preference.PreferenceScreen; 29 30 import com.android.internal.annotations.VisibleForTesting; 31 import com.android.settings.R; 32 import com.android.settings.Utils; 33 import com.android.settings.biometrics.BiometricStatusPreferenceController; 34 import com.android.settings.biometrics.ParentalControlsUtils; 35 import com.android.settingslib.RestrictedLockUtils; 36 import com.android.settingslib.RestrictedPreference; 37 38 public class FingerprintStatusPreferenceController extends BiometricStatusPreferenceController 39 implements LifecycleObserver { 40 41 private static final String KEY_FINGERPRINT_SETTINGS = "fingerprint_settings"; 42 43 protected final FingerprintManager mFingerprintManager; 44 @VisibleForTesting 45 RestrictedPreference mPreference; 46 FingerprintStatusPreferenceController(Context context)47 public FingerprintStatusPreferenceController(Context context) { 48 this(context, KEY_FINGERPRINT_SETTINGS); 49 } 50 FingerprintStatusPreferenceController(Context context, String key)51 public FingerprintStatusPreferenceController(Context context, String key) { 52 this(context, key, null /* lifecycle */); 53 } 54 FingerprintStatusPreferenceController(Context context, Lifecycle lifecycle)55 public FingerprintStatusPreferenceController(Context context, Lifecycle lifecycle) { 56 this(context, KEY_FINGERPRINT_SETTINGS, lifecycle); 57 } 58 FingerprintStatusPreferenceController(Context context, String key, Lifecycle lifecycle)59 public FingerprintStatusPreferenceController(Context context, String key, Lifecycle lifecycle) { 60 super(context, key); 61 mFingerprintManager = Utils.getFingerprintManagerOrNull(context); 62 63 if (lifecycle != null) { 64 lifecycle.addObserver(this); 65 } 66 } 67 68 @OnLifecycleEvent(Lifecycle.Event.ON_RESUME) onResume()69 public void onResume() { 70 updateStateInternal(); 71 } 72 73 @Override displayPreference(PreferenceScreen screen)74 public void displayPreference(PreferenceScreen screen) { 75 super.displayPreference(screen); 76 mPreference = screen.findPreference(mPreferenceKey); 77 } 78 79 @Override isDeviceSupported()80 protected boolean isDeviceSupported() { 81 return !Utils.isMultipleBiometricsSupported(mContext) 82 && Utils.hasFingerprintHardware(mContext); 83 } 84 85 @Override hasEnrolledBiometrics()86 protected boolean hasEnrolledBiometrics() { 87 return mFingerprintManager.hasEnrolledFingerprints(getUserId()); 88 } 89 90 @Override updateState(Preference preference)91 public void updateState(Preference preference) { 92 super.updateState(preference); 93 updateStateInternal(); 94 } 95 updateStateInternal()96 private void updateStateInternal() { 97 updateStateInternal(ParentalControlsUtils.parentConsentRequired( 98 mContext, BiometricAuthenticator.TYPE_FINGERPRINT)); 99 } 100 101 @VisibleForTesting updateStateInternal(@ullable RestrictedLockUtils.EnforcedAdmin enforcedAdmin)102 void updateStateInternal(@Nullable RestrictedLockUtils.EnforcedAdmin enforcedAdmin) { 103 if (mPreference != null) { 104 mPreference.setDisabledByAdmin(enforcedAdmin); 105 } 106 } 107 108 @Override getSummaryTextEnrolled()109 protected String getSummaryTextEnrolled() { 110 final int numEnrolled = mFingerprintManager.getEnrolledFingerprints(getUserId()).size(); 111 return mContext.getResources().getQuantityString( 112 R.plurals.security_settings_fingerprint_preference_summary, 113 numEnrolled, numEnrolled); 114 } 115 116 @Override getSummaryTextNoneEnrolled()117 protected String getSummaryTextNoneEnrolled() { 118 return mContext.getString(R.string.security_settings_fingerprint_preference_summary_none); 119 } 120 121 @Override getSettingsClassName()122 protected String getSettingsClassName() { 123 return FingerprintSettings.class.getName(); 124 } 125 126 @Override getEnrollClassName()127 protected String getEnrollClassName() { 128 return FingerprintEnrollIntroduction.class.getName(); 129 } 130 131 } 132