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; 18 19 import android.annotation.Nullable; 20 import android.content.Intent; 21 import android.os.UserHandle; 22 import android.view.View; 23 24 import com.android.settings.password.ChooseLockSettingsHelper; 25 26 /** 27 * Abstract base activity which handles the actual enrolling for biometrics. 28 */ 29 public abstract class BiometricsEnrollEnrolling extends BiometricEnrollBase 30 implements BiometricEnrollSidecar.Listener { 31 32 private static final String TAG_SIDECAR = "sidecar"; 33 34 @Nullable 35 protected BiometricEnrollSidecar mSidecar; 36 37 /** 38 * @return the intent for the finish activity 39 */ getFinishIntent()40 protected abstract Intent getFinishIntent(); 41 42 /** 43 * @return an instance of the biometric enroll sidecar 44 */ getSidecar()45 protected abstract BiometricEnrollSidecar getSidecar(); 46 47 /** 48 * @return true if enrollment should start automatically. 49 */ shouldStartAutomatically()50 protected abstract boolean shouldStartAutomatically(); 51 52 @Override onStart()53 protected void onStart() { 54 super.onStart(); 55 if (shouldStartAutomatically()) { 56 startEnrollment(); 57 } 58 } 59 60 @Override onStop()61 protected void onStop() { 62 if (mSidecar != null) { 63 mSidecar.setListener(null); 64 } 65 if (!isChangingConfigurations()) { 66 if (mSidecar != null) { 67 mSidecar.cancelEnrollment(); 68 getSupportFragmentManager() 69 .beginTransaction().remove(mSidecar).commitAllowingStateLoss(); 70 } 71 } 72 73 super.onStop(); 74 } 75 76 @Override onBackPressed()77 public void onBackPressed() { 78 cancelEnrollment(); 79 super.onBackPressed(); 80 } 81 onSkipButtonClick(View view)82 protected void onSkipButtonClick(View view) { 83 cancelEnrollment(); 84 setResult(RESULT_SKIP); 85 finish(); 86 } 87 cancelEnrollment()88 public void cancelEnrollment() { 89 if (mSidecar != null) { 90 mSidecar.setListener(null); 91 mSidecar.cancelEnrollment(); 92 getSupportFragmentManager() 93 .beginTransaction().remove(mSidecar).commitAllowingStateLoss(); 94 mSidecar = null; 95 } 96 } 97 startEnrollment()98 public void startEnrollment() { 99 mSidecar = (BiometricEnrollSidecar) getSupportFragmentManager() 100 .findFragmentByTag(TAG_SIDECAR); 101 if (mSidecar == null) { 102 mSidecar = getSidecar(); 103 getSupportFragmentManager().beginTransaction().add(mSidecar, TAG_SIDECAR) 104 .commitAllowingStateLoss(); 105 } 106 mSidecar.setListener(this); 107 } 108 launchFinish(byte[] token)109 protected void launchFinish(byte[] token) { 110 Intent intent = getFinishIntent(); 111 intent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT 112 | Intent.FLAG_ACTIVITY_CLEAR_TOP 113 | Intent.FLAG_ACTIVITY_SINGLE_TOP); 114 intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN, token); 115 intent.putExtra(BiometricEnrollBase.EXTRA_KEY_SENSOR_ID, mSensorId); 116 intent.putExtra(BiometricEnrollBase.EXTRA_KEY_CHALLENGE, mChallenge); 117 intent.putExtra(EXTRA_FROM_SETTINGS_SUMMARY, mFromSettingsSummary); 118 if (mUserId != UserHandle.USER_NULL) { 119 intent.putExtra(Intent.EXTRA_USER_ID, mUserId); 120 } 121 startActivity(intent); 122 finish(); 123 } 124 125 } 126