├── .gitignore ├── CONTRIBUTING.md ├── LICENSE ├── README.md ├── backup-codelab-done ├── .gitignore ├── app │ ├── .gitignore │ ├── build.gradle │ ├── proguard-rules.pro │ └── src │ │ └── main │ │ ├── AndroidManifest.xml │ │ ├── java │ │ └── com │ │ │ └── googlecodelabs │ │ │ └── example │ │ │ └── backupexample │ │ │ ├── LoggedInActivity.java │ │ │ ├── LoginActivity.java │ │ │ └── PrefUtils.java │ │ └── res │ │ ├── drawable │ │ ├── ic_info_black_24dp.xml │ │ ├── ic_launcher_background.xml │ │ ├── ic_notifications_black_24dp.xml │ │ └── ic_sync_black_24dp.xml │ │ ├── layout │ │ ├── activity_logged_in.xml │ │ └── activity_login.xml │ │ ├── mipmap-anydpi-v26 │ │ ├── ic_launcher.xml │ │ └── ic_launcher_round.xml │ │ ├── mipmap-hdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-mdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xhdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxhdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxxhdpi │ │ ├── ic_launcher.png │ │ ├── ic_launcher_foreground.png │ │ └── ic_launcher_round.png │ │ ├── values │ │ ├── colors.xml │ │ ├── dimens.xml │ │ ├── strings.xml │ │ └── styles.xml │ │ └── xml │ │ ├── backup_descriptor.xml │ │ ├── pref_data_sync.xml │ │ ├── pref_general.xml │ │ ├── pref_headers.xml │ │ └── pref_notification.xml ├── build.gradle ├── gradle.properties ├── gradle │ └── wrapper │ │ ├── gradle-wrapper.jar │ │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle └── backup-codelab-start ├── .gitignore ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── com │ │ └── googlecodelabs │ │ └── example │ │ └── backupexample │ │ ├── LoggedInActivity.java │ │ ├── LoginActivity.java │ │ └── PrefUtils.java │ └── res │ ├── drawable │ ├── ic_info_black_24dp.xml │ ├── ic_launcher_background.xml │ ├── ic_notifications_black_24dp.xml │ └── ic_sync_black_24dp.xml │ ├── layout │ ├── activity_logged_in.xml │ └── activity_login.xml │ ├── mipmap-anydpi-v26 │ ├── ic_launcher.xml │ └── ic_launcher_round.xml │ ├── mipmap-hdpi │ ├── ic_launcher.png │ ├── ic_launcher_foreground.png │ └── ic_launcher_round.png │ ├── mipmap-mdpi │ ├── ic_launcher.png │ ├── ic_launcher_foreground.png │ └── ic_launcher_round.png │ ├── mipmap-xhdpi │ ├── ic_launcher.png │ ├── ic_launcher_foreground.png │ └── ic_launcher_round.png │ ├── mipmap-xxhdpi │ ├── ic_launcher.png │ ├── ic_launcher_foreground.png │ └── ic_launcher_round.png │ ├── mipmap-xxxhdpi │ ├── ic_launcher.png │ ├── ic_launcher_foreground.png │ └── ic_launcher_round.png │ ├── values │ ├── colors.xml │ ├── dimens.xml │ ├── strings.xml │ └── styles.xml │ └── xml │ ├── pref_data_sync.xml │ ├── pref_general.xml │ ├── pref_headers.xml │ └── pref_notification.xml ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | .idea/ 2 | -------------------------------------------------------------------------------- /CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | # How to become a contributor and submit your own code 2 | 3 | ## Contributor License Agreements 4 | 5 | We'd love to accept your patches! Before we can take them, we 6 | have to jump a couple of legal hurdles. 7 | 8 | ### Before you contribute 9 | Before we can use your code, you must sign the 10 | [Google Individual Contributor License Agreement](https://cla.developers.google.com/about/google-individual) 11 | (CLA), which you can do online. The CLA is necessary mainly because you own the 12 | copyright to your changes, even after your contribution becomes part of our 13 | codebase, so we need your permission to use and distribute your code. We also 14 | need to be sure of various other things—for instance that you'll tell us if you 15 | know that your code infringes on other people's patents. You don't have to sign 16 | the CLA until after you've submitted your code for review and a member has 17 | approved it, but you must do it before we can put your code into our codebase. 18 | Before you start working on a larger contribution, you should get in touch with 19 | us first through the issue tracker with your idea so that we can help out and 20 | possibly guide you. Coordinating up front makes it much easier to avoid 21 | frustration later on. 22 | 23 | ### Code reviews 24 | All submissions, including submissions by project members, require review. We 25 | use Github pull requests for this purpose. 26 | 27 | ### The small print 28 | Contributions made by corporations are covered by a different agreement than 29 | the one above, the 30 | [Software Grant and Corporate Contributor License Agreement](https://cla.developers.google.com/about/google-corporate). 31 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. Definitions. 8 | 9 | "License" shall mean the terms and conditions for use, reproduction, 10 | and distribution as defined by Sections 1 through 9 of this document. 11 | 12 | "Licensor" shall mean the copyright owner or entity authorized by 13 | the copyright owner that is granting the License. 14 | 15 | "Legal Entity" shall mean the union of the acting entity and all 16 | other entities that control, are controlled by, or are under common 17 | control with that entity. For the purposes of this definition, 18 | "control" means (i) the power, direct or indirect, to cause the 19 | direction or management of such entity, whether by contract or 20 | otherwise, or (ii) ownership of fifty percent (50%) or more of the 21 | outstanding shares, or (iii) beneficial ownership of such entity. 22 | 23 | "You" (or "Your") shall mean an individual or Legal Entity 24 | exercising permissions granted by this License. 25 | 26 | "Source" form shall mean the preferred form for making modifications, 27 | including but not limited to software source code, documentation 28 | source, and configuration files. 29 | 30 | "Object" form shall mean any form resulting from mechanical 31 | transformation or translation of a Source form, including but 32 | not limited to compiled object code, generated documentation, 33 | and conversions to other media types. 34 | 35 | "Work" shall mean the work of authorship, whether in Source or 36 | Object form, made available under the License, as indicated by a 37 | copyright notice that is included in or attached to the work 38 | (an example is provided in the Appendix below). 39 | 40 | "Derivative Works" shall mean any work, whether in Source or Object 41 | form, that is based on (or derived from) the Work and for which the 42 | editorial revisions, annotations, elaborations, or other modifications 43 | represent, as a whole, an original work of authorship. For the purposes 44 | of this License, Derivative Works shall not include works that remain 45 | separable from, or merely link (or bind by name) to the interfaces of, 46 | the Work and Derivative Works thereof. 47 | 48 | "Contribution" shall mean any work of authorship, including 49 | the original version of the Work and any modifications or additions 50 | to that Work or Derivative Works thereof, that is intentionally 51 | submitted to Licensor for inclusion in the Work by the copyright owner 52 | or by an individual or Legal Entity authorized to submit on behalf of 53 | the copyright owner. For the purposes of this definition, "submitted" 54 | means any form of electronic, verbal, or written communication sent 55 | to the Licensor or its representatives, including but not limited to 56 | communication on electronic mailing lists, source code control systems, 57 | and issue tracking systems that are managed by, or on behalf of, the 58 | Licensor for the purpose of discussing and improving the Work, but 59 | excluding communication that is conspicuously marked or otherwise 60 | designated in writing by the copyright owner as "Not a Contribution." 61 | 62 | "Contributor" shall mean Licensor and any individual or Legal Entity 63 | on behalf of whom a Contribution has been received by Licensor and 64 | subsequently incorporated within the Work. 65 | 66 | 2. Grant of Copyright License. Subject to the terms and conditions of 67 | this License, each Contributor hereby grants to You a perpetual, 68 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 69 | copyright license to reproduce, prepare Derivative Works of, 70 | publicly display, publicly perform, sublicense, and distribute the 71 | Work and such Derivative Works in Source or Object form. 72 | 73 | 3. Grant of Patent License. Subject to the terms and conditions of 74 | this License, each Contributor hereby grants to You a perpetual, 75 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 76 | (except as stated in this section) patent license to make, have made, 77 | use, offer to sell, sell, import, and otherwise transfer the Work, 78 | where such license applies only to those patent claims licensable 79 | by such Contributor that are necessarily infringed by their 80 | Contribution(s) alone or by combination of their Contribution(s) 81 | with the Work to which such Contribution(s) was submitted. If You 82 | institute patent litigation against any entity (including a 83 | cross-claim or counterclaim in a lawsuit) alleging that the Work 84 | or a Contribution incorporated within the Work constitutes direct 85 | or contributory patent infringement, then any patent licenses 86 | granted to You under this License for that Work shall terminate 87 | as of the date such litigation is filed. 88 | 89 | 4. Redistribution. You may reproduce and distribute copies of the 90 | Work or Derivative Works thereof in any medium, with or without 91 | modifications, and in Source or Object form, provided that You 92 | meet the following conditions: 93 | 94 | (a) You must give any other recipients of the Work or 95 | Derivative Works a copy of this License; and 96 | 97 | (b) You must cause any modified files to carry prominent notices 98 | stating that You changed the files; and 99 | 100 | (c) You must retain, in the Source form of any Derivative Works 101 | that You distribute, all copyright, patent, trademark, and 102 | attribution notices from the Source form of the Work, 103 | excluding those notices that do not pertain to any part of 104 | the Derivative Works; and 105 | 106 | (d) If the Work includes a "NOTICE" text file as part of its 107 | distribution, then any Derivative Works that You distribute must 108 | include a readable copy of the attribution notices contained 109 | within such NOTICE file, excluding those notices that do not 110 | pertain to any part of the Derivative Works, in at least one 111 | of the following places: within a NOTICE text file distributed 112 | as part of the Derivative Works; within the Source form or 113 | documentation, if provided along with the Derivative Works; or, 114 | within a display generated by the Derivative Works, if and 115 | wherever such third-party notices normally appear. The contents 116 | of the NOTICE file are for informational purposes only and 117 | do not modify the License. You may add Your own attribution 118 | notices within Derivative Works that You distribute, alongside 119 | or as an addendum to the NOTICE text from the Work, provided 120 | that such additional attribution notices cannot be construed 121 | as modifying the License. 122 | 123 | You may add Your own copyright statement to Your modifications and 124 | may provide additional or different license terms and conditions 125 | for use, reproduction, or distribution of Your modifications, or 126 | for any such Derivative Works as a whole, provided Your use, 127 | reproduction, and distribution of the Work otherwise complies with 128 | the conditions stated in this License. 129 | 130 | 5. Submission of Contributions. Unless You explicitly state otherwise, 131 | any Contribution intentionally submitted for inclusion in the Work 132 | by You to the Licensor shall be under the terms and conditions of 133 | this License, without any additional terms or conditions. 134 | Notwithstanding the above, nothing herein shall supersede or modify 135 | the terms of any separate license agreement you may have executed 136 | with Licensor regarding such Contributions. 137 | 138 | 6. Trademarks. This License does not grant permission to use the trade 139 | names, trademarks, service marks, or product names of the Licensor, 140 | except as required for reasonable and customary use in describing the 141 | origin of the Work and reproducing the content of the NOTICE file. 142 | 143 | 7. Disclaimer of Warranty. Unless required by applicable law or 144 | agreed to in writing, Licensor provides the Work (and each 145 | Contributor provides its Contributions) on an "AS IS" BASIS, 146 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 147 | implied, including, without limitation, any warranties or conditions 148 | of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A 149 | PARTICULAR PURPOSE. You are solely responsible for determining the 150 | appropriateness of using or redistributing the Work and assume any 151 | risks associated with Your exercise of permissions under this License. 152 | 153 | 8. Limitation of Liability. In no event and under no legal theory, 154 | whether in tort (including negligence), contract, or otherwise, 155 | unless required by applicable law (such as deliberate and grossly 156 | negligent acts) or agreed to in writing, shall any Contributor be 157 | liable to You for damages, including any direct, indirect, special, 158 | incidental, or consequential damages of any character arising as a 159 | result of this License or out of the use or inability to use the 160 | Work (including but not limited to damages for loss of goodwill, 161 | work stoppage, computer failure or malfunction, or any and all 162 | other commercial damages or losses), even if such Contributor 163 | has been advised of the possibility of such damages. 164 | 165 | 9. Accepting Warranty or Additional Liability. While redistributing 166 | the Work or Derivative Works thereof, You may choose to offer, 167 | and charge a fee for, acceptance of support, warranty, indemnity, 168 | or other liability obligations and/or rights consistent with this 169 | License. However, in accepting such obligations, You may act only 170 | on Your own behalf and on Your sole responsibility, not on behalf 171 | of any other Contributor, and only if You agree to indemnify, 172 | defend, and hold each Contributor harmless for any liability 173 | incurred by, or claims asserted against, such Contributor by reason 174 | of your accepting any such warranty or additional liability. 175 | 176 | END OF TERMS AND CONDITIONS 177 | 178 | APPENDIX: How to apply the Apache License to your work. 179 | 180 | To apply the Apache License to your work, attach the following 181 | boilerplate notice, with the fields enclosed by brackets "{}" 182 | replaced with your own identifying information. (Don't include 183 | the brackets!) The text should be enclosed in the appropriate 184 | comment syntax for the file format. We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Auto Backup for Android Codelab 2 | 3 | This folder contains the source code for the Auto Backup codelab 4 | 5 | ### License 6 | 7 | ``` 8 | Copyright 2017 Google, Inc. 9 | 10 | Licensed to the Apache Software Foundation (ASF) under one or more contributor 11 | license agreements. See the NOTICE file distributed with this work for 12 | additional information regarding copyright ownership. The ASF licenses this 13 | file to you under the Apache License, Version 2.0 (the "License"); you may not 14 | use this file except in compliance with the License. You may obtain a copy of 15 | the License at 16 | 17 | http://www.apache.org/licenses/LICENSE-2.0 18 | 19 | Unless required by applicable law or agreed to in writing, software 20 | distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 21 | WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 22 | License for the specific language governing permissions and limitations under 23 | the License. 24 | ``` 25 | -------------------------------------------------------------------------------- /backup-codelab-done/.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/workspace.xml 5 | /.idea/libraries 6 | .DS_Store 7 | /build 8 | /captures 9 | .externalNativeBuild 10 | -------------------------------------------------------------------------------- /backup-codelab-done/app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /backup-codelab-done/app/build.gradle: -------------------------------------------------------------------------------- 1 | // Copyright 2017 Google Inc. 2 | // 3 | // Licensed under the Apache License, Version 2.0 (the "License"); 4 | // you may not use this file except in compliance with the License. 5 | // You may obtain a copy of the License at 6 | // 7 | // http://www.apache.org/licenses/LICENSE-2.0 8 | // 9 | // Unless required by applicable law or agreed to in writing, software 10 | // distributed under the License is distributed on an "AS IS" BASIS, 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | // See the License for the specific language governing permissions and 13 | // limitations under the License. 14 | 15 | apply plugin: 'com.android.application' 16 | 17 | android { 18 | compileSdkVersion 29 19 | buildToolsVersion '29.0.2' 20 | defaultConfig { 21 | applicationId "com.googlecodelabs.example.backupexample" 22 | minSdkVersion 17 23 | targetSdkVersion 29 24 | versionCode 1 25 | versionName "1.0" 26 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 27 | } 28 | buildTypes { 29 | release { 30 | minifyEnabled false 31 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 32 | } 33 | } 34 | } 35 | 36 | dependencies { 37 | implementation fileTree(dir: 'libs', include: ['*.jar']) 38 | implementation 'androidx.appcompat:appcompat:1.1.0' 39 | implementation 'com.google.android.material:material:1.0.0' 40 | implementation 'androidx.legacy:legacy-support-v4:1.0.0' 41 | } 42 | -------------------------------------------------------------------------------- /backup-codelab-done/app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /backup-codelab-done/app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 20 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | -------------------------------------------------------------------------------- /backup-codelab-done/app/src/main/java/com/googlecodelabs/example/backupexample/LoggedInActivity.java: -------------------------------------------------------------------------------- 1 | // Copyright 2017 Google Inc. 2 | // 3 | // Licensed under the Apache License, Version 2.0 (the "License"); 4 | // you may not use this file except in compliance with the License. 5 | // You may obtain a copy of the License at 6 | // 7 | // http://www.apache.org/licenses/LICENSE-2.0 8 | // 9 | // Unless required by applicable law or agreed to in writing, software 10 | // distributed under the License is distributed on an "AS IS" BASIS, 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | // See the License for the specific language governing permissions and 13 | // limitations under the License. 14 | 15 | package com.googlecodelabs.example.backupexample; 16 | 17 | import android.content.Intent; 18 | import android.os.Bundle; 19 | import androidx.annotation.Nullable; 20 | import androidx.appcompat.app.AppCompatActivity; 21 | import android.view.View; 22 | import android.widget.Button; 23 | import android.widget.TextView; 24 | 25 | public class LoggedInActivity extends AppCompatActivity { 26 | @Override 27 | protected void onCreate(@Nullable Bundle savedInstanceState) { 28 | super.onCreate(savedInstanceState); 29 | 30 | // You do not need to edit this activity 31 | 32 | setContentView(R.layout.activity_logged_in); 33 | 34 | TextView prefsDetails = findViewById(R.id.prefs_details); 35 | prefsDetails.setText(PrefUtils.getDebugText(this)); 36 | 37 | Button logout = findViewById(R.id.logout); 38 | logout.setOnClickListener(new View.OnClickListener() { 39 | @Override 40 | public void onClick(View view) { 41 | PrefUtils.logout(LoggedInActivity.this); 42 | Intent intent = new Intent(LoggedInActivity.this, LoginActivity.class); 43 | startActivity(intent); 44 | finish(); 45 | } 46 | }); 47 | 48 | // You do not need to edit this activity 49 | } 50 | } 51 | -------------------------------------------------------------------------------- /backup-codelab-done/app/src/main/java/com/googlecodelabs/example/backupexample/LoginActivity.java: -------------------------------------------------------------------------------- 1 | // Copyright 2017 Google Inc. 2 | // 3 | // Licensed under the Apache License, Version 2.0 (the "License"); 4 | // you may not use this file except in compliance with the License. 5 | // You may obtain a copy of the License at 6 | // 7 | // http://www.apache.org/licenses/LICENSE-2.0 8 | // 9 | // Unless required by applicable law or agreed to in writing, software 10 | // distributed under the License is distributed on an "AS IS" BASIS, 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | // See the License for the specific language governing permissions and 13 | // limitations under the License. 14 | 15 | package com.googlecodelabs.example.backupexample; 16 | 17 | import android.animation.Animator; 18 | import android.animation.AnimatorListenerAdapter; 19 | import android.annotation.TargetApi; 20 | import android.content.Intent; 21 | import android.os.AsyncTask; 22 | import android.os.Build; 23 | import android.os.Bundle; 24 | import androidx.annotation.Nullable; 25 | import androidx.appcompat.app.AppCompatActivity; 26 | import android.view.KeyEvent; 27 | import android.view.View; 28 | import android.view.View.OnClickListener; 29 | import android.view.inputmethod.EditorInfo; 30 | import android.widget.AutoCompleteTextView; 31 | import android.widget.Button; 32 | import android.widget.EditText; 33 | import android.widget.TextView; 34 | 35 | /** 36 | * A login screen that offers login via email/password. 37 | */ 38 | public class LoginActivity extends AppCompatActivity { 39 | 40 | /** 41 | * A dummy authentication store containing known user names and passwords. 42 | */ 43 | private static final String[] DUMMY_CREDENTIALS = new String[]{ 44 | "foo@example.com:hello", "bar@example.com:world" 45 | }; 46 | 47 | /** 48 | * Keep track of the login task to ensure we can cancel it if requested. 49 | */ 50 | private UserLoginTask mAuthTask = null; 51 | 52 | // UI references. 53 | private AutoCompleteTextView mEmailView; 54 | private EditText mPasswordView; 55 | private View mProgressView; 56 | private View mLoginFormView; 57 | 58 | @Override 59 | protected void onCreate(Bundle savedInstanceState) { 60 | super.onCreate(savedInstanceState); 61 | setContentView(R.layout.activity_login); 62 | // Set up the login form. 63 | mEmailView = findViewById(R.id.email); 64 | 65 | mPasswordView = findViewById(R.id.password); 66 | mPasswordView.setOnEditorActionListener(new TextView.OnEditorActionListener() { 67 | @Override 68 | public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) { 69 | if (id == EditorInfo.IME_ACTION_DONE || id == EditorInfo.IME_NULL) { 70 | attemptLogin(); 71 | return true; 72 | } 73 | return false; 74 | } 75 | }); 76 | 77 | Button mEmailSignInButton = findViewById(R.id.email_sign_in_button); 78 | mEmailSignInButton.setOnClickListener(new OnClickListener() { 79 | @Override 80 | public void onClick(View view) { 81 | attemptLogin(); 82 | } 83 | }); 84 | mLoginFormView = findViewById(R.id.login_form); 85 | mProgressView = findViewById(R.id.login_progress); 86 | 87 | 88 | if (!PrefUtils.needsLogin(this)) { 89 | startActivity(new Intent(this, LoggedInActivity.class)); 90 | finish(); 91 | } 92 | 93 | overlayDebug((TextView) findViewById(R.id.overlay)); 94 | 95 | //******************* Implement Login Hinting ***************** 96 | String accountHint = PrefUtils.getLoginHint(this); 97 | if (accountHint != null) { 98 | mEmailView.setHint(accountHint); 99 | } 100 | //******************* End implement Login Hinting ************* 101 | } 102 | 103 | private void overlayDebug(@Nullable TextView overlay) { 104 | if (overlay == null) { 105 | return; 106 | } 107 | overlay.setText(PrefUtils.getDebugText(this)); 108 | } 109 | 110 | 111 | /** 112 | * Attempts to sign in or register the account specified by the login form. 113 | * If there are form errors (invalid email, missing fields, etc.), the 114 | * errors are presented and no actual login attempt is made. 115 | */ 116 | private void attemptLogin() { 117 | if (mAuthTask != null) { 118 | return; 119 | } 120 | 121 | // Reset errors. 122 | mEmailView.setError(null); 123 | mPasswordView.setError(null); 124 | 125 | // Store values at the time of the login attempt. 126 | String email = mEmailView.getText().toString(); 127 | String password = mPasswordView.getText().toString(); 128 | 129 | // Show a progress spinner, and kick off a background task to 130 | // perform the user login attempt. 131 | showProgress(true); 132 | mAuthTask = new UserLoginTask(email, password); 133 | mAuthTask.execute((Void) null); 134 | } 135 | 136 | /** 137 | * Shows the progress UI and hides the login form. 138 | */ 139 | @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2) 140 | private void showProgress(final boolean show) { 141 | // On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow 142 | // for very easy animations. If available, use these APIs to fade-in 143 | // the progress spinner. 144 | if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) { 145 | int shortAnimTime = getResources().getInteger(android.R.integer.config_shortAnimTime); 146 | 147 | mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE); 148 | mLoginFormView.animate().setDuration(shortAnimTime).alpha( 149 | show ? 0 : 1).setListener(new AnimatorListenerAdapter() { 150 | @Override 151 | public void onAnimationEnd(Animator animation) { 152 | mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE); 153 | } 154 | }); 155 | 156 | mProgressView.setVisibility(show ? View.VISIBLE : View.GONE); 157 | mProgressView.animate().setDuration(shortAnimTime).alpha( 158 | show ? 1 : 0).setListener(new AnimatorListenerAdapter() { 159 | @Override 160 | public void onAnimationEnd(Animator animation) { 161 | mProgressView.setVisibility(show ? View.VISIBLE : View.GONE); 162 | } 163 | }); 164 | } else { 165 | // The ViewPropertyAnimator APIs are not available, so simply show 166 | // and hide the relevant UI components. 167 | mProgressView.setVisibility(show ? View.VISIBLE : View.GONE); 168 | mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE); 169 | } 170 | } 171 | 172 | /** 173 | * Represents an asynchronous login/registration task used to authenticate 174 | * the user. 175 | */ 176 | public class UserLoginTask extends AsyncTask { 177 | 178 | private final String mEmail; 179 | private final String mPassword; 180 | 181 | UserLoginTask(String email, String password) { 182 | mEmail = email; 183 | mPassword = password; 184 | } 185 | 186 | @Override 187 | protected Boolean doInBackground(Void... params) { 188 | // TODO: attempt authentication against a network service. 189 | 190 | try { 191 | // Simulate network access. 192 | Thread.sleep(2000); 193 | } catch (InterruptedException e) { 194 | return false; 195 | } 196 | 197 | for (String credential : DUMMY_CREDENTIALS) { 198 | String[] pieces = credential.split(":"); 199 | if (pieces[0].equals(mEmail)) { 200 | // Account exists, return true if the password matches. 201 | if (pieces[1].equals(mPassword)) { 202 | // TODO: register the new account here and get back an authKey 203 | return true; 204 | } 205 | } 206 | } 207 | return false; 208 | } 209 | 210 | @Override 211 | protected void onPostExecute(final Boolean success) { 212 | mAuthTask = null; 213 | showProgress(false); 214 | 215 | if (success) { 216 | finishLogin(mEmail, mPassword); 217 | } else { 218 | mPasswordView.setError(getString(R.string.error_incorrect_password)); 219 | mPasswordView.requestFocus(); 220 | } 221 | } 222 | 223 | @Override 224 | protected void onCancelled() { 225 | mAuthTask = null; 226 | showProgress(false); 227 | } 228 | } 229 | 230 | private void finishLogin(String email, String password) { 231 | // For the sake of this example, we assume that the authKey is the password 232 | // Note: You should always ensure that usernames/passwords should be excluded 233 | // from backup for security. 234 | PrefUtils.setLoginAccount(LoginActivity.this, email, password); 235 | startActivity(new Intent(this, LoggedInActivity.class)); 236 | finish(); 237 | } 238 | } 239 | 240 | -------------------------------------------------------------------------------- /backup-codelab-done/app/src/main/java/com/googlecodelabs/example/backupexample/PrefUtils.java: -------------------------------------------------------------------------------- 1 | // Copyright 2017 Google Inc. 2 | // 3 | // Licensed under the Apache License, Version 2.0 (the "License"); 4 | // you may not use this file except in compliance with the License. 5 | // You may obtain a copy of the License at 6 | // 7 | // http://www.apache.org/licenses/LICENSE-2.0 8 | // 9 | // Unless required by applicable law or agreed to in writing, software 10 | // distributed under the License is distributed on an "AS IS" BASIS, 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | // See the License for the specific language governing permissions and 13 | // limitations under the License. 14 | 15 | package com.googlecodelabs.example.backupexample; 16 | 17 | import android.content.Context; 18 | import android.content.SharedPreferences; 19 | import androidx.annotation.NonNull; 20 | import androidx.annotation.Nullable; 21 | import android.text.Html; 22 | import android.text.Spanned; 23 | 24 | /** 25 | * Class for storing and accessing SharedPreferences 26 | */ 27 | class PrefUtils { 28 | 29 | /** 30 | * We store the login details such as the actual email address 31 | * used for logging into our app in this preferences file. 32 | * 33 | * Since this has the actual details, we exclude it from backup. 34 | */ 35 | private static final String PREF_LOGIN_DETAILS = 36 | "com.googlecodelabs.example.backupexample.PREF_LOGIN_DETAILS"; 37 | 38 | /** 39 | * This shared preferences file contains information that should be backed up. 40 | * Rather than actual email address, it contains a hints and other data that can 41 | * be helpful for end users after a backup 42 | */ 43 | private static final String PREF_APP_INFO = 44 | "com.googlecodelabs.example.backupexample.PREF_APP_INFO"; 45 | 46 | private static final String ACCOUNT_NAME = "ACCOUNT_NAME"; 47 | private static final String ACCOUNT_AUTH_KEY = "ACCOUNT_AUTH_KEY"; 48 | private static final String ACCOUNT_NAME_HINT = "ACCOUNT_NAME_HINT"; 49 | 50 | /* Class known for its static methods*/ 51 | private PrefUtils() { 52 | } 53 | 54 | /** 55 | * Whether the App should show the login screen 56 | * We store this in a shared preference that is excluded from 57 | * backup. 58 | * 59 | * @param context Context for fetching SharedPreferences 60 | * @return boolean indicating whether we should show the login screen 61 | */ 62 | static boolean needsLogin(Context context) { 63 | SharedPreferences preferences = 64 | context.getSharedPreferences(PREF_LOGIN_DETAILS, Context.MODE_PRIVATE); 65 | return preferences.getString(ACCOUNT_AUTH_KEY, null) == null || 66 | preferences.getString(ACCOUNT_NAME, null) == null; 67 | } 68 | 69 | /** 70 | * Set the Login Account name once the login is successful. 71 | * 72 | * Here we also set an account name hint for the user to remember which account they 73 | * used once the app has been restored. 74 | * 75 | * @param context Context used for SharedPreferences 76 | * @param accountName The username/acountName to be set 77 | * @param authKey The authKey to be used for login 78 | */ 79 | static void setLoginAccount(@NonNull Context context, String accountName, String authKey) { 80 | context.getSharedPreferences(PREF_LOGIN_DETAILS, Context.MODE_PRIVATE) 81 | .edit() 82 | .putString(ACCOUNT_NAME, accountName) 83 | .putString(ACCOUNT_AUTH_KEY, authKey) 84 | .apply(); 85 | context.getSharedPreferences(PREF_APP_INFO, Context.MODE_PRIVATE) 86 | .edit() 87 | .putString(ACCOUNT_NAME_HINT, createHint(accountName)) 88 | .apply(); 89 | } 90 | 91 | static void logout(@NonNull Context context) { 92 | context.getSharedPreferences(PREF_LOGIN_DETAILS, Context.MODE_PRIVATE) 93 | .edit() 94 | .remove(ACCOUNT_NAME) 95 | .remove(ACCOUNT_AUTH_KEY) 96 | .apply(); 97 | } 98 | 99 | private static String createHint(String accountName) { 100 | int idx = accountName.indexOf("@"); 101 | String namePart = accountName; 102 | String rem = ""; 103 | if (idx > -1) { 104 | namePart = accountName.substring(0, idx); 105 | rem = accountName.substring(idx); 106 | } 107 | 108 | return namePart.substring(0, 2) + "****" + rem; 109 | } 110 | 111 | @Nullable 112 | static String getLoginAccount(@NonNull Context context) { 113 | return context.getSharedPreferences(PREF_LOGIN_DETAILS, Context.MODE_PRIVATE) 114 | .getString(ACCOUNT_NAME, null); 115 | } 116 | 117 | static String getLoginAuthKey(Context context) { 118 | return context.getSharedPreferences(PREF_LOGIN_DETAILS, Context.MODE_PRIVATE) 119 | .getString(ACCOUNT_AUTH_KEY, null); 120 | } 121 | 122 | static String getLoginHint(Context context) { 123 | return context.getSharedPreferences(PREF_APP_INFO, Context.MODE_PRIVATE) 124 | .getString(ACCOUNT_NAME_HINT, null); 125 | } 126 | 127 | static Spanned getDebugText(@NonNull Context context) { 128 | StringBuilder sb = new StringBuilder(); 129 | sb.append("SHARED PREFS DEBUG:
"); 130 | sb.append(ACCOUNT_NAME_HINT); 131 | sb.append(": "); 132 | sb.append(PrefUtils.getLoginHint(context)); 133 | sb.append("
\n"); 134 | 135 | sb.append(ACCOUNT_NAME); 136 | sb.append(": "); 137 | sb.append(PrefUtils.getLoginAccount(context)); 138 | sb.append("
\n"); 139 | 140 | sb.append(ACCOUNT_AUTH_KEY); 141 | sb.append(": "); 142 | sb.append(PrefUtils.getLoginAuthKey(context)); 143 | sb.append("
\n"); 144 | return Html.fromHtml(sb.toString()); 145 | } 146 | } 147 | -------------------------------------------------------------------------------- /backup-codelab-done/app/src/main/res/drawable/ic_info_black_24dp.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 22 | 25 | 26 | -------------------------------------------------------------------------------- /backup-codelab-done/app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 22 | 27 | 32 | 37 | 42 | 47 | 52 | 57 | 62 | 67 | 72 | 77 | 82 | 87 | 92 | 97 | 102 | 107 | 112 | 117 | 122 | 127 | 128 | 129 | -------------------------------------------------------------------------------- /backup-codelab-done/app/src/main/res/drawable/ic_notifications_black_24dp.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 22 | 25 | 26 | -------------------------------------------------------------------------------- /backup-codelab-done/app/src/main/res/drawable/ic_sync_black_24dp.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 22 | 25 | -------------------------------------------------------------------------------- /backup-codelab-done/app/src/main/res/layout/activity_logged_in.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 22 | 23 | 31 | 32 | 40 | 41 |