2 * Copyright (C) 2015 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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
17 package com.android.settings.fingerprint;
19 import android.annotation.Nullable;
20 import android.app.Activity;
21 import android.content.Intent;
22 import android.hardware.fingerprint.FingerprintManager;
23 import android.os.Bundle;
24 import android.os.CancellationSignal;
25 import android.os.Handler;
26 import android.os.UserHandle;
28 import com.android.internal.logging.MetricsProto.MetricsEvent;
29 import com.android.settings.ChooseLockSettingsHelper;
30 import com.android.settings.Utils;
31 import com.android.settings.core.InstrumentedFragment;
34 * Sidecar fragment to handle the state around fingerprint enrollment.
36 public class FingerprintEnrollSidecar extends InstrumentedFragment {
38 private int mEnrollmentSteps = -1;
39 private int mEnrollmentRemaining = 0;
40 private Listener mListener;
41 private boolean mEnrolling;
42 private CancellationSignal mEnrollmentCancel;
43 private Handler mHandler = new Handler();
44 private byte[] mToken;
45 private boolean mDone;
47 private FingerprintManager mFingerprintManager;
50 public void onCreate(@Nullable Bundle savedInstanceState) {
51 super.onCreate(savedInstanceState);
52 setRetainInstance(true);
56 public void onAttach(Activity activity) {
57 super.onAttach(activity);
58 mFingerprintManager = Utils.getFingerprintManagerOrNull(activity);
59 mToken = activity.getIntent().getByteArrayExtra(
60 ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN);
61 mUserId = activity.getIntent().getIntExtra(Intent.EXTRA_USER_ID, UserHandle.USER_NULL);
65 public void onStart() {
73 public void onStop() {
75 if (!getActivity().isChangingConfigurations()) {
80 private void startEnrollment() {
81 mHandler.removeCallbacks(mTimeoutRunnable);
82 mEnrollmentSteps = -1;
83 mEnrollmentCancel = new CancellationSignal();
84 if (mUserId != UserHandle.USER_NULL) {
85 mFingerprintManager.setActiveUser(mUserId);
87 mFingerprintManager.enroll(mToken, mEnrollmentCancel,
88 0 /* flags */, mUserId, mEnrollmentCallback);
92 boolean cancelEnrollment() {
93 mHandler.removeCallbacks(mTimeoutRunnable);
95 mEnrollmentCancel.cancel();
97 mEnrollmentSteps = -1;
103 public void setListener(Listener listener) {
104 mListener = listener;
107 public int getEnrollmentSteps() {
108 return mEnrollmentSteps;
111 public int getEnrollmentRemaining() {
112 return mEnrollmentRemaining;
115 public boolean isDone() {
119 private FingerprintManager.EnrollmentCallback mEnrollmentCallback
120 = new FingerprintManager.EnrollmentCallback() {
123 public void onEnrollmentProgress(int remaining) {
124 if (mEnrollmentSteps == -1) {
125 mEnrollmentSteps = remaining;
127 mEnrollmentRemaining = remaining;
128 mDone = remaining == 0;
129 if (mListener != null) {
130 mListener.onEnrollmentProgressChange(mEnrollmentSteps, remaining);
135 public void onEnrollmentHelp(int helpMsgId, CharSequence helpString) {
136 if (mListener != null) {
137 mListener.onEnrollmentHelp(helpString);
142 public void onEnrollmentError(int errMsgId, CharSequence errString) {
143 if (mListener != null) {
144 mListener.onEnrollmentError(errMsgId, errString);
150 private final Runnable mTimeoutRunnable = new Runnable() {
158 public int getMetricsCategory() {
159 return MetricsEvent.FINGERPRINT_ENROLL_SIDECAR;
162 public interface Listener {
163 void onEnrollmentHelp(CharSequence helpString);
164 void onEnrollmentError(int errMsgId, CharSequence errString);
165 void onEnrollmentProgressChange(int steps, int remaining);
168 public boolean isEnrolling() {