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      1 /*
      2  * Copyright (C) 2015 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.fingerprint;
     18 
     19 import android.app.admin.DevicePolicyManager;
     20 import android.content.ActivityNotFoundException;
     21 import android.content.Intent;
     22 import android.hardware.fingerprint.FingerprintManager;
     23 import android.os.Bundle;
     24 import android.os.UserHandle;
     25 import android.os.UserManager;
     26 import android.util.Log;
     27 import android.view.View;
     28 import android.widget.Button;
     29 import android.widget.TextView;
     30 
     31 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
     32 import com.android.settings.R;
     33 import com.android.settings.Utils;
     34 import com.android.settings.password.ChooseLockGeneric;
     35 import com.android.settings.password.ChooseLockSettingsHelper;
     36 import com.android.settingslib.HelpUtils;
     37 import com.android.settingslib.RestrictedLockUtils;
     38 import com.android.setupwizardlib.span.LinkSpan;
     39 
     40 /**
     41  * Onboarding activity for fingerprint enrollment.
     42  */
     43 public class FingerprintEnrollIntroduction extends FingerprintEnrollBase
     44         implements View.OnClickListener, LinkSpan.OnClickListener {
     45 
     46     private static final String TAG = "FingerprintIntro";
     47 
     48     protected static final int CHOOSE_LOCK_GENERIC_REQUEST = 1;
     49     protected static final int FINGERPRINT_FIND_SENSOR_REQUEST = 2;
     50     protected static final int LEARN_MORE_REQUEST = 3;
     51 
     52     private UserManager mUserManager;
     53     private boolean mHasPassword;
     54     private boolean mFingerprintUnlockDisabledByAdmin;
     55     private TextView mErrorText;
     56 
     57     @Override
     58     protected void onCreate(Bundle savedInstanceState) {
     59         super.onCreate(savedInstanceState);
     60         mFingerprintUnlockDisabledByAdmin = RestrictedLockUtils.checkIfKeyguardFeaturesDisabled(
     61                 this, DevicePolicyManager.KEYGUARD_DISABLE_FINGERPRINT, mUserId) != null;
     62 
     63         setContentView(R.layout.fingerprint_enroll_introduction);
     64         if (mFingerprintUnlockDisabledByAdmin) {
     65             setHeaderText(R.string
     66                     .security_settings_fingerprint_enroll_introduction_title_unlock_disabled);
     67         } else {
     68             setHeaderText(R.string.security_settings_fingerprint_enroll_introduction_title);
     69         }
     70 
     71         Button cancelButton = (Button) findViewById(R.id.fingerprint_cancel_button);
     72         cancelButton.setOnClickListener(this);
     73 
     74         mErrorText = (TextView) findViewById(R.id.error_text);
     75 
     76         mUserManager = UserManager.get(this);
     77         updatePasswordQuality();
     78     }
     79 
     80     @Override
     81     protected void onResume() {
     82         super.onResume();
     83 
     84         final FingerprintManager fingerprintManager = Utils.getFingerprintManagerOrNull(this);
     85         int errorMsg = 0;
     86         if (fingerprintManager != null) {
     87             final int max = getResources().getInteger(
     88                     com.android.internal.R.integer.config_fingerprintMaxTemplatesPerUser);
     89             final int numEnrolledFingerprints =
     90                     fingerprintManager.getEnrolledFingerprints(mUserId).size();
     91             if (numEnrolledFingerprints >= max) {
     92                 errorMsg = R.string.fingerprint_intro_error_max;
     93             }
     94         } else {
     95             errorMsg = R.string.fingerprint_intro_error_unknown;
     96         }
     97         if (errorMsg == 0) {
     98             mErrorText.setText(null);
     99             getNextButton().setVisibility(View.VISIBLE);
    100         } else {
    101             mErrorText.setText(errorMsg);
    102             getNextButton().setVisibility(View.GONE);
    103         }
    104     }
    105 
    106     private void updatePasswordQuality() {
    107         final int passwordQuality = new ChooseLockSettingsHelper(this).utils()
    108                 .getActivePasswordQuality(mUserManager.getCredentialOwnerProfile(mUserId));
    109         mHasPassword = passwordQuality != DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
    110     }
    111 
    112     @Override
    113     protected Button getNextButton() {
    114         return (Button) findViewById(R.id.fingerprint_next_button);
    115     }
    116 
    117     @Override
    118     protected void onNextButtonClick() {
    119         if (!mHasPassword) {
    120             // No fingerprints registered, launch into enrollment wizard.
    121             launchChooseLock();
    122         } else {
    123             // Lock thingy is already set up, launch directly into find sensor step from wizard.
    124             launchFindSensor(null);
    125         }
    126     }
    127 
    128     private void launchChooseLock() {
    129         Intent intent = getChooseLockIntent();
    130         long challenge = Utils.getFingerprintManagerOrNull(this).preEnroll();
    131         intent.putExtra(ChooseLockGeneric.ChooseLockGenericFragment.MINIMUM_QUALITY_KEY,
    132                 DevicePolicyManager.PASSWORD_QUALITY_SOMETHING);
    133         intent.putExtra(ChooseLockGeneric.ChooseLockGenericFragment.HIDE_DISABLED_PREFS, true);
    134         intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_HAS_CHALLENGE, true);
    135         intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE, challenge);
    136         intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_FOR_FINGERPRINT, true);
    137         if (mUserId != UserHandle.USER_NULL) {
    138             intent.putExtra(Intent.EXTRA_USER_ID, mUserId);
    139         }
    140         startActivityForResult(intent, CHOOSE_LOCK_GENERIC_REQUEST);
    141     }
    142 
    143     private void launchFindSensor(byte[] token) {
    144         Intent intent = getFindSensorIntent();
    145         if (token != null) {
    146             intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN, token);
    147         }
    148         if (mUserId != UserHandle.USER_NULL) {
    149             intent.putExtra(Intent.EXTRA_USER_ID, mUserId);
    150         }
    151         startActivityForResult(intent, FINGERPRINT_FIND_SENSOR_REQUEST);
    152     }
    153 
    154     protected Intent getChooseLockIntent() {
    155         return new Intent(this, ChooseLockGeneric.class);
    156     }
    157 
    158     protected Intent getFindSensorIntent() {
    159         return new Intent(this, FingerprintEnrollFindSensor.class);
    160     }
    161 
    162     @Override
    163     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    164         final boolean isResultFinished = resultCode == RESULT_FINISHED;
    165         if (requestCode == FINGERPRINT_FIND_SENSOR_REQUEST) {
    166             if (isResultFinished || resultCode == RESULT_SKIP) {
    167                 final int result = isResultFinished ? RESULT_OK : RESULT_SKIP;
    168                 setResult(result, data);
    169                 finish();
    170                 return;
    171             }
    172         } else if (requestCode == CHOOSE_LOCK_GENERIC_REQUEST) {
    173             if (isResultFinished) {
    174                 updatePasswordQuality();
    175                 byte[] token = data.getByteArrayExtra(
    176                         ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN);
    177                 launchFindSensor(token);
    178                 return;
    179             }
    180         } else if (requestCode == LEARN_MORE_REQUEST) {
    181             overridePendingTransition(R.anim.suw_slide_back_in, R.anim.suw_slide_back_out);
    182         }
    183         super.onActivityResult(requestCode, resultCode, data);
    184     }
    185 
    186     @Override
    187     public void onClick(View v) {
    188         if (v.getId() == R.id.fingerprint_cancel_button) {
    189             onCancelButtonClick();
    190         } else {
    191             super.onClick(v);
    192         }
    193     }
    194 
    195     @Override
    196     public int getMetricsCategory() {
    197         return MetricsEvent.FINGERPRINT_ENROLL_INTRO;
    198     }
    199 
    200     protected void onCancelButtonClick() {
    201         finish();
    202     }
    203 
    204     @Override
    205     protected void initViews() {
    206         super.initViews();
    207 
    208         TextView description = (TextView) findViewById(R.id.description_text);
    209         if (mFingerprintUnlockDisabledByAdmin) {
    210             description.setText(R.string
    211                     .security_settings_fingerprint_enroll_introduction_message_unlock_disabled);
    212         }
    213     }
    214 
    215     @Override
    216     public void onClick(LinkSpan span) {
    217         if ("url".equals(span.getId())) {
    218             String url = getString(R.string.help_url_fingerprint);
    219             Intent intent = HelpUtils.getHelpIntent(this, url, getClass().getName());
    220             if (intent == null) {
    221                 Log.w(TAG, "Null help intent.");
    222                 return;
    223             }
    224             try {
    225                 // This needs to be startActivityForResult even though we do not care about the
    226                 // actual result because the help app needs to know about who invoked it.
    227                 startActivityForResult(intent, LEARN_MORE_REQUEST);
    228             } catch (ActivityNotFoundException e) {
    229                 Log.w(TAG, "Activity was not found for intent, " + e);
    230             }
    231         }
    232     }
    233 }
    234