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.content.Intent;
20 import android.hardware.fingerprint.FingerprintManager;
21 import android.os.Bundle;
22 import android.os.UserHandle;
23 
24 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
25 import com.android.settings.ChooseLockSettingsHelper;
26 import com.android.settings.R;
27 import com.android.settings.Utils;
28 import com.android.settings.fingerprint.FingerprintEnrollSidecar.Listener;
29 
30 /**
31  * Activity explaining the fingerprint sensor location for fingerprint enrollment.
32  */
33 public class FingerprintEnrollFindSensor extends FingerprintEnrollBase {
34 
35     private static final int CONFIRM_REQUEST = 1;
36     private static final int ENROLLING = 2;
37     public static final String EXTRA_KEY_LAUNCHED_CONFIRM = "launched_confirm_lock";
38 
39     private FingerprintFindSensorAnimation mAnimation;
40     private boolean mLaunchedConfirmLock;
41     private FingerprintEnrollSidecar mSidecar;
42     private boolean mNextClicked;
43 
44     @Override
onCreate(Bundle savedInstanceState)45     protected void onCreate(Bundle savedInstanceState) {
46         super.onCreate(savedInstanceState);
47         setContentView(getContentView());
48         setHeaderText(R.string.security_settings_fingerprint_enroll_find_sensor_title);
49         if (savedInstanceState != null) {
50             mLaunchedConfirmLock = savedInstanceState.getBoolean(EXTRA_KEY_LAUNCHED_CONFIRM);
51             mToken = savedInstanceState.getByteArray(
52                     ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN);
53         }
54         if (mToken == null && !mLaunchedConfirmLock) {
55             launchConfirmLock();
56         } else if (mToken != null) {
57             startLookingForFingerprint(); // already confirmed, so start looking for fingerprint
58         }
59         mAnimation = (FingerprintFindSensorAnimation) findViewById(
60                 R.id.fingerprint_sensor_location_animation);
61     }
62 
getContentView()63     protected int getContentView() {
64         return R.layout.fingerprint_enroll_find_sensor;
65     }
66 
67     @Override
onStart()68     protected void onStart() {
69         super.onStart();
70         mAnimation.startAnimation();
71     }
72 
startLookingForFingerprint()73     private void startLookingForFingerprint() {
74         mSidecar = (FingerprintEnrollSidecar) getFragmentManager().findFragmentByTag(
75                 FingerprintEnrollEnrolling.TAG_SIDECAR);
76         if (mSidecar == null) {
77             mSidecar = new FingerprintEnrollSidecar();
78             getFragmentManager().beginTransaction()
79                     .add(mSidecar, FingerprintEnrollEnrolling.TAG_SIDECAR).commit();
80         }
81         mSidecar.setListener(new Listener() {
82             @Override
83             public void onEnrollmentProgressChange(int steps, int remaining) {
84                 mNextClicked = true;
85                 proceedToEnrolling(true /* cancelEnrollment */);
86             }
87 
88             @Override
89             public void onEnrollmentHelp(CharSequence helpString) {
90             }
91 
92             @Override
93             public void onEnrollmentError(int errMsgId, CharSequence errString) {
94                 if (mNextClicked && errMsgId == FingerprintManager.FINGERPRINT_ERROR_CANCELED) {
95                     mNextClicked = false;
96                     proceedToEnrolling(false /* cancelEnrollment */);
97                 }
98             }
99         });
100     }
101 
102     @Override
onStop()103     protected void onStop() {
104         super.onStop();
105         mAnimation.pauseAnimation();
106     }
107 
108     @Override
onDestroy()109     protected void onDestroy() {
110         super.onDestroy();
111         mAnimation.stopAnimation();
112     }
113 
114     @Override
onSaveInstanceState(Bundle outState)115     public void onSaveInstanceState(Bundle outState) {
116         super.onSaveInstanceState(outState);
117         outState.putBoolean(EXTRA_KEY_LAUNCHED_CONFIRM, mLaunchedConfirmLock);
118         outState.putByteArray(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN, mToken);
119     }
120 
121     @Override
onNextButtonClick()122     protected void onNextButtonClick() {
123         mNextClicked = true;
124         proceedToEnrolling(true /* cancelEnrollment */);
125     }
126 
proceedToEnrolling(boolean cancelEnrollment)127     private void proceedToEnrolling(boolean cancelEnrollment) {
128         if (mSidecar != null) {
129             if (cancelEnrollment) {
130                 if (mSidecar.cancelEnrollment()) {
131                     // Enrollment cancel requested. When the cancellation is successful,
132                     // onEnrollmentError will be called with FINGERPRINT_ERROR_CANCELED, calling
133                     // this again.
134                     return;
135                 }
136             }
137             getFragmentManager().beginTransaction().remove(mSidecar).commitAllowingStateLoss();
138             mSidecar = null;
139             startActivityForResult(getEnrollingIntent(), ENROLLING);
140         }
141     }
142 
143     @Override
onActivityResult(int requestCode, int resultCode, Intent data)144     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
145         if (requestCode == CONFIRM_REQUEST) {
146             if (resultCode == RESULT_OK) {
147                 mToken = data.getByteArrayExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN);
148                 overridePendingTransition(R.anim.suw_slide_next_in, R.anim.suw_slide_next_out);
149                 getIntent().putExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN, mToken);
150                 startLookingForFingerprint();
151             } else {
152                 finish();
153             }
154         } else if (requestCode == ENROLLING) {
155             if (resultCode == RESULT_FINISHED) {
156                 setResult(RESULT_FINISHED);
157                 finish();
158             } else if (resultCode == RESULT_SKIP) {
159                 setResult(RESULT_SKIP);
160                 finish();
161             } else if (resultCode == RESULT_TIMEOUT) {
162                 setResult(RESULT_TIMEOUT);
163                 finish();
164             } else {
165                 FingerprintManager fpm = Utils.getFingerprintManagerOrNull(this);
166                 int enrolled = fpm.getEnrolledFingerprints().size();
167                 int max = getResources().getInteger(
168                         com.android.internal.R.integer.config_fingerprintMaxTemplatesPerUser);
169                 if (enrolled >= max) {
170                     finish();
171                 } else {
172                     // We came back from enrolling but it wasn't completed, start again.
173                     startLookingForFingerprint();
174                 }
175             }
176         } else {
177             super.onActivityResult(requestCode, resultCode, data);
178         }
179     }
180 
launchConfirmLock()181     private void launchConfirmLock() {
182         long challenge = Utils.getFingerprintManagerOrNull(this).preEnroll();
183         ChooseLockSettingsHelper helper = new ChooseLockSettingsHelper(this);
184         boolean launchedConfirmationActivity = false;
185         if (mUserId == UserHandle.USER_NULL) {
186             launchedConfirmationActivity = helper.launchConfirmationActivity(CONFIRM_REQUEST,
187                 getString(R.string.security_settings_fingerprint_preference_title),
188                 null, null, challenge);
189         } else {
190             launchedConfirmationActivity = helper.launchConfirmationActivity(CONFIRM_REQUEST,
191                     getString(R.string.security_settings_fingerprint_preference_title),
192                     null, null, challenge, mUserId);
193         }
194         if (!launchedConfirmationActivity) {
195             // This shouldn't happen, as we should only end up at this step if a lock thingy is
196             // already set.
197             finish();
198         } else {
199             mLaunchedConfirmLock = true;
200         }
201     }
202 
203     @Override
getMetricsCategory()204     public int getMetricsCategory() {
205         return MetricsEvent.FINGERPRINT_FIND_SENSOR;
206     }
207 }
208