├── .github └── ISSUE_TEMPLATE ├── .gitignore ├── CONTRIBUTING.md ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── ic_launcher-playstore.png │ ├── java │ └── com │ │ └── example │ │ └── android │ │ └── unscramble │ │ ├── MainActivity.kt │ │ └── ui │ │ └── game │ │ ├── GameFragment.kt │ │ ├── GameViewModel.kt │ │ └── ListofWords.kt │ └── res │ ├── drawable │ ├── ic_error.xml │ ├── ic_launcher_background.xml │ └── ic_launcher_foreground.xml │ ├── layout │ ├── game_fragment.xml │ └── main_activity.xml │ ├── mipmap-anydpi-v26 │ ├── ic_launcher.xml │ └── ic_launcher_round.xml │ ├── mipmap-hdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-mdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xxhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xxxhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── values-night │ ├── styles.xml │ └── themes.xml │ └── values │ ├── colors.xml │ ├── dimens.xml │ ├── strings.xml │ ├── styles.xml │ └── themes.xml ├── build.gradle ├── code-of-conduct.md ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.github/ISSUE_TEMPLATE: -------------------------------------------------------------------------------- 1 | --- 2 | name: Android Basics Unit 3 issue 3 | about: Report problems with the Android Basics Unit 3 codelabs 4 | title: 'Android Basics Unit 3 issue:' 5 | labels: '' 6 | assignees: '' 7 | 8 | --- 9 | 10 | **URL of codelab** 11 | 12 | 13 | **In which task and step of the codelab can this issue be found?** 14 | 15 | 16 | **Describe the problem** 17 | 18 | 19 | 20 | 21 | **Steps to reproduce?** 22 | 1. Go to... 23 | 2. Click on... 24 | 3. See error... 25 | 26 | **Versions** 27 | _Android Studio version:_ 28 | _API version of the emulator:_ 29 | 30 | 31 | **Additional information** 32 | _Include screenshots if they would be useful in clarifying the problem._ 33 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | */.gitignore 2 | .gradle 3 | .DS_Store 4 | 5 | # built application files 6 | *.apk 7 | *.ap_ 8 | 9 | # files for the dex VM 10 | *.dex 11 | 12 | # Java class files 13 | *.class 14 | 15 | # generated files 16 | bin/ 17 | out/ 18 | gen/ 19 | 20 | # Libraries used by the app 21 | /libs 22 | 23 | # Build stuff (auto-generated by android update project ...) 24 | build.xml 25 | ant.properties 26 | local.properties 27 | project.properties 28 | 29 | # Eclipse project files 30 | .classpath 31 | .project 32 | 33 | # idea project files 34 | .idea/ 35 | .idea/.name 36 | *.iml 37 | *.ipr 38 | *.iws 39 | 40 | # Gradle-based build 41 | build/ 42 | -------------------------------------------------------------------------------- /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 sample apps and patches! Before we can take them, we 6 | have to jump a couple of legal hurdles. 7 | 8 | Please fill out either the individual or corporate Contributor License Agreement 9 | (CLA). 10 | 11 | * If you are an individual writing original source code and you're sure you 12 | own the intellectual property, then you'll need to sign an [individual CLA] 13 | (https://developers.google.com/open-source/cla/individual). 14 | * If you work for a company that wants to allow you to contribute your work, 15 | then you'll need to sign a [corporate CLA] 16 | (https://developers.google.com/open-source/cla/corporate). 17 | 18 | Follow either of the two links above to access the appropriate CLA and 19 | instructions for how to sign and return it. Once we receive it, we'll be able to 20 | accept your pull requests. 21 | 22 | ## Contributing A Patch 23 | 24 | 1. Submit an issue describing your proposed change to the repo in question. 25 | 1. The repo owner will respond to your issue promptly. 26 | 1. If your proposed change is accepted, and you haven't already done so, sign a 27 | Contributor License Agreement (see details above). 28 | 1. Fork the desired repo, develop and test your code changes. 29 | 1. Ensure that your code adheres to the existing style in the sample to which 30 | you are contributing. Refer to the 31 | [Google Cloud Platform Samples Style Guide] 32 | (https://github.com/GoogleCloudPlatform/Template/wiki/style.html) for the 33 | recommended coding standards for this organization. 34 | 1. Ensure that your code has an appropriate set of unit tests which all pass. 35 | 1. Submit a pull request. 36 | 37 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | 2 | Apache License 3 | Version 2.0, January 2004 4 | http://www.apache.org/licenses/ 5 | 6 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 7 | 8 | 1. Definitions. 9 | 10 | "License" shall mean the terms and conditions for use, reproduction, 11 | and distribution as defined by Sections 1 through 9 of this document. 12 | 13 | "Licensor" shall mean the copyright owner or entity authorized by 14 | the copyright owner that is granting the License. 15 | 16 | "Legal Entity" shall mean the union of the acting entity and all 17 | other entities that control, are controlled by, or are under common 18 | control with that entity. For the purposes of this definition, 19 | "control" means (i) the power, direct or indirect, to cause the 20 | direction or management of such entity, whether by contract or 21 | otherwise, or (ii) ownership of fifty percent (50%) or more of the 22 | outstanding shares, or (iii) beneficial ownership of such entity. 23 | 24 | "You" (or "Your") shall mean an individual or Legal Entity 25 | exercising permissions granted by this License. 26 | 27 | "Source" form shall mean the preferred form for making modifications, 28 | including but not limited to software source code, documentation 29 | source, and configuration files. 30 | 31 | "Object" form shall mean any form resulting from mechanical 32 | transformation or translation of a Source form, including but 33 | not limited to compiled object code, generated documentation, 34 | and conversions to other media types. 35 | 36 | "Work" shall mean the work of authorship, whether in Source or 37 | Object form, made available under the License, as indicated by a 38 | copyright notice that is included in or attached to the work 39 | (an example is provided in the Appendix below). 40 | 41 | "Derivative Works" shall mean any work, whether in Source or Object 42 | form, that is based on (or derived from) the Work and for which the 43 | editorial revisions, annotations, elaborations, or other modifications 44 | represent, as a whole, an original work of authorship. For the purposes 45 | of this License, Derivative Works shall not include works that remain 46 | separable from, or merely link (or bind by name) to the interfaces of, 47 | the Work and Derivative Works thereof. 48 | 49 | "Contribution" shall mean any work of authorship, including 50 | the original version of the Work and any modifications or additions 51 | to that Work or Derivative Works thereof, that is intentionally 52 | submitted to Licensor for inclusion in the Work by the copyright owner 53 | or by an individual or Legal Entity authorized to submit on behalf of 54 | the copyright owner. For the purposes of this definition, "submitted" 55 | means any form of electronic, verbal, or written communication sent 56 | to the Licensor or its representatives, including but not limited to 57 | communication on electronic mailing lists, source code control systems, 58 | and issue tracking systems that are managed by, or on behalf of, the 59 | Licensor for the purpose of discussing and improving the Work, but 60 | excluding communication that is conspicuously marked or otherwise 61 | designated in writing by the copyright owner as "Not a Contribution." 62 | 63 | "Contributor" shall mean Licensor and any individual or Legal Entity 64 | on behalf of whom a Contribution has been received by Licensor and 65 | subsequently incorporated within the Work. 66 | 67 | 2. Grant of Copyright License. Subject to the terms and conditions of 68 | this License, each Contributor hereby grants to You a perpetual, 69 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 70 | copyright license to reproduce, prepare Derivative Works of, 71 | publicly display, publicly perform, sublicense, and distribute the 72 | Work and such Derivative Works in Source or Object form. 73 | 74 | 3. Grant of Patent License. Subject to the terms and conditions of 75 | this License, each Contributor hereby grants to You a perpetual, 76 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 77 | (except as stated in this section) patent license to make, have made, 78 | use, offer to sell, sell, import, and otherwise transfer the Work, 79 | where such license applies only to those patent claims licensable 80 | by such Contributor that are necessarily infringed by their 81 | Contribution(s) alone or by combination of their Contribution(s) 82 | with the Work to which such Contribution(s) was submitted. If You 83 | institute patent litigation against any entity (including a 84 | cross-claim or counterclaim in a lawsuit) alleging that the Work 85 | or a Contribution incorporated within the Work constitutes direct 86 | or contributory patent infringement, then any patent licenses 87 | granted to You under this License for that Work shall terminate 88 | as of the date such litigation is filed. 89 | 90 | 4. Redistribution. You may reproduce and distribute copies of the 91 | Work or Derivative Works thereof in any medium, with or without 92 | modifications, and in Source or Object form, provided that You 93 | meet the following conditions: 94 | 95 | (a) You must give any other recipients of the Work or 96 | Derivative Works a copy of this License; and 97 | 98 | (b) You must cause any modified files to carry prominent notices 99 | stating that You changed the files; and 100 | 101 | (c) You must retain, in the Source form of any Derivative Works 102 | that You distribute, all copyright, patent, trademark, and 103 | attribution notices from the Source form of the Work, 104 | excluding those notices that do not pertain to any part of 105 | the Derivative Works; and 106 | 107 | (d) If the Work includes a "NOTICE" text file as part of its 108 | distribution, then any Derivative Works that You distribute must 109 | include a readable copy of the attribution notices contained 110 | within such NOTICE file, excluding those notices that do not 111 | pertain to any part of the Derivative Works, in at least one 112 | of the following places: within a NOTICE text file distributed 113 | as part of the Derivative Works; within the Source form or 114 | documentation, if provided along with the Derivative Works; or, 115 | within a display generated by the Derivative Works, if and 116 | wherever such third-party notices normally appear. The contents 117 | of the NOTICE file are for informational purposes only and 118 | do not modify the License. You may add Your own attribution 119 | notices within Derivative Works that You distribute, alongside 120 | or as an addendum to the NOTICE text from the Work, provided 121 | that such additional attribution notices cannot be construed 122 | as modifying the License. 123 | 124 | You may add Your own copyright statement to Your modifications and 125 | may provide additional or different license terms and conditions 126 | for use, reproduction, or distribution of Your modifications, or 127 | for any such Derivative Works as a whole, provided Your use, 128 | reproduction, and distribution of the Work otherwise complies with 129 | the conditions stated in this License. 130 | 131 | 5. Submission of Contributions. Unless You explicitly state otherwise, 132 | any Contribution intentionally submitted for inclusion in the Work 133 | by You to the Licensor shall be under the terms and conditions of 134 | this License, without any additional terms or conditions. 135 | Notwithstanding the above, nothing herein shall supersede or modify 136 | the terms of any separate license agreement you may have executed 137 | with Licensor regarding such Contributions. 138 | 139 | 6. Trademarks. This License does not grant permission to use the trade 140 | names, trademarks, service marks, or product names of the Licensor, 141 | except as required for reasonable and customary use in describing the 142 | origin of the Work and reproducing the content of the NOTICE file. 143 | 144 | 7. Disclaimer of Warranty. Unless required by applicable law or 145 | agreed to in writing, Licensor provides the Work (and each 146 | Contributor provides its Contributions) on an "AS IS" BASIS, 147 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 148 | implied, including, without limitation, any warranties or conditions 149 | of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A 150 | PARTICULAR PURPOSE. You are solely responsible for determining the 151 | appropriateness of using or redistributing the Work and assume any 152 | risks associated with Your exercise of permissions under this License. 153 | 154 | 8. Limitation of Liability. In no event and under no legal theory, 155 | whether in tort (including negligence), contract, or otherwise, 156 | unless required by applicable law (such as deliberate and grossly 157 | negligent acts) or agreed to in writing, shall any Contributor be 158 | liable to You for damages, including any direct, indirect, special, 159 | incidental, or consequential damages of any character arising as a 160 | result of this License or out of the use or inability to use the 161 | Work (including but not limited to damages for loss of goodwill, 162 | work stoppage, computer failure or malfunction, or any and all 163 | other commercial damages or losses), even if such Contributor 164 | has been advised of the possibility of such damages. 165 | 166 | 9. Accepting Warranty or Additional Liability. While redistributing 167 | the Work or Derivative Works thereof, You may choose to offer, 168 | and charge a fee for, acceptance of support, warranty, indemnity, 169 | or other liability obligations and/or rights consistent with this 170 | License. However, in accepting such obligations, You may act only 171 | on Your own behalf and on Your sole responsibility, not on behalf 172 | of any other Contributor, and only if You agree to indemnify, 173 | defend, and hold each Contributor harmless for any liability 174 | incurred by, or claims asserted against, such Contributor by reason 175 | of your accepting any such warranty or additional liability. 176 | 177 | END OF TERMS AND CONDITIONS 178 | 179 | APPENDIX: How to apply the Apache License to your work. 180 | 181 | To apply the Apache License to your work, attach the following 182 | boilerplate notice, with the fields enclosed by brackets "[]" 183 | replaced with your own identifying information. (Don't include 184 | the brackets!) The text should be enclosed in the appropriate 185 | comment syntax for the file format. We also recommend that a 186 | file or class name and description of purpose be included on the 187 | same "printed page" as the copyright notice for easier 188 | identification within third-party archives. 189 | 190 | Copyright [yyyy] [name of copyright owner] 191 | 192 | Licensed under the Apache License, Version 2.0 (the "License"); 193 | you may not use this file except in compliance with the License. 194 | You may obtain a copy of the License at 195 | 196 | http://www.apache.org/licenses/LICENSE-2.0 197 | 198 | Unless required by applicable law or agreed to in writing, software 199 | distributed under the License is distributed on an "AS IS" BASIS, 200 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 201 | See the License for the specific language governing permissions and 202 | limitations under the License. 203 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | Unscramble App 2 | =================================== 3 | 4 | Single player game app that displays scrambled words. To play the game, player has to make a 5 | word using all the letters in the displayed scrambled word. 6 | This code demonstrates the Android Architecture component- ViewModel and LiveData. 7 | This code sample also demonstrates how to implement Data Binding with LiveData. 8 | 9 | Used in the [Android Basics with Kotlin](https://developer.android.com/courses/android-basics-kotlin/course) course. 10 | 11 | 12 | Pre-requisites 13 | -------------- 14 | 15 | You need to know: 16 | - How to use Fragments 17 | - How to design a layout in ConstraintLayout 18 | - How to write control flow statements (if / else, when statements) 19 | - How to update the UI of the app based on user input 20 | - How to add a click listener to a Button 21 | 22 | Getting Started 23 | --------------- 24 | 25 | 1. Download and run the app. 26 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 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 | plugins { 18 | id 'com.android.application' 19 | id 'kotlin-android' 20 | id 'kotlin-kapt' 21 | } 22 | 23 | android { 24 | compileSdkVersion 33 25 | 26 | defaultConfig { 27 | applicationId "com.example.android.unscramble" 28 | minSdkVersion 23 29 | targetSdkVersion 33 30 | versionCode 1 31 | versionName "1.0" 32 | 33 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 34 | } 35 | 36 | buildTypes { 37 | release { 38 | minifyEnabled false 39 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 40 | } 41 | } 42 | compileOptions { 43 | sourceCompatibility JavaVersion.VERSION_1_8 44 | targetCompatibility JavaVersion.VERSION_1_8 45 | } 46 | kotlinOptions { 47 | jvmTarget = '1.8' 48 | } 49 | buildFeatures { 50 | dataBinding = true 51 | } 52 | } 53 | 54 | dependencies { 55 | 56 | implementation 'androidx.core:core-ktx:1.9.0' 57 | implementation 'androidx.appcompat:appcompat:1.6.1' 58 | implementation 'com.google.android.material:material:1.8.0' 59 | implementation 'androidx.constraintlayout:constraintlayout:2.1.4' 60 | // LiveData 61 | implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.5.1' 62 | // ViewModel 63 | implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1' 64 | implementation 'androidx.fragment:fragment-ktx:1.5.5' 65 | } -------------------------------------------------------------------------------- /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 -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 18 | 20 | 21 | 28 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | -------------------------------------------------------------------------------- /app/src/main/ic_launcher-playstore.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/google-developer-training/android-basics-kotlin-unscramble-app/e900b6d1a23d53390998f834970ed91e14735d0b/app/src/main/ic_launcher-playstore.png -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/unscramble/MainActivity.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 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.example.android.unscramble 18 | 19 | import android.os.Bundle 20 | import androidx.appcompat.app.AppCompatActivity 21 | 22 | /** 23 | * Creates an Activity that hosts the Game fragment in the app 24 | */ 25 | class MainActivity : AppCompatActivity() { 26 | 27 | override fun onCreate(savedInstanceState: Bundle?) { 28 | super.onCreate(savedInstanceState) 29 | setContentView(R.layout.main_activity) 30 | } 31 | } -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/unscramble/ui/game/GameFragment.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 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.example.android.unscramble.ui.game 18 | 19 | import android.os.Bundle 20 | import android.view.LayoutInflater 21 | import android.view.View 22 | import android.view.ViewGroup 23 | import androidx.databinding.DataBindingUtil 24 | import androidx.fragment.app.Fragment 25 | import androidx.fragment.app.viewModels 26 | import com.example.android.unscramble.R 27 | import com.example.android.unscramble.databinding.GameFragmentBinding 28 | import com.google.android.material.dialog.MaterialAlertDialogBuilder 29 | 30 | /** 31 | * Fragment where the game is played, contains the game logic. 32 | */ 33 | class GameFragment : Fragment() { 34 | 35 | // Binding object instance with access to the views in the game_fragment.xml layout 36 | private lateinit var binding: GameFragmentBinding 37 | 38 | // Create a ViewModel the first time the fragment is created. 39 | // If the fragment is re-created, it receives the same GameViewModel instance created by the 40 | // first fragment. 41 | private val viewModel: GameViewModel by viewModels() 42 | 43 | override fun onCreateView( 44 | inflater: LayoutInflater, container: ViewGroup?, 45 | savedInstanceState: Bundle? 46 | ): View { 47 | // Inflate the layout XML file and return a binding object instance 48 | binding = DataBindingUtil.inflate(inflater, R.layout.game_fragment, container, false) 49 | return binding.root 50 | } 51 | 52 | override fun onViewCreated(view: View, savedInstanceState: Bundle?) { 53 | super.onViewCreated(view, savedInstanceState) 54 | 55 | // Set the viewModel for data binding - this allows the bound layout access 56 | // to all the data in the VieWModel 57 | binding.gameViewModel = viewModel 58 | binding.maxNoOfWords = MAX_NO_OF_WORDS 59 | // Specify the fragment view as the lifecycle owner of the binding. 60 | // This is used so that the binding can observe LiveData updates 61 | binding.lifecycleOwner = viewLifecycleOwner 62 | 63 | // Setup a click listener for the Submit and Skip buttons. 64 | binding.submit.setOnClickListener { onSubmitWord() } 65 | binding.skip.setOnClickListener { onSkipWord() } 66 | if (viewModel.isGameOver()) { showFinalScoreDialog() } 67 | } 68 | 69 | /* 70 | * Checks the user's word, and updates the score accordingly. 71 | * Displays the next scrambled word. 72 | * After the last word, the user is shown a Dialog with the final score. 73 | */ 74 | private fun onSubmitWord() { 75 | val playerWord = binding.textInputEditText.text.toString() 76 | 77 | if (viewModel.isUserWordCorrect(playerWord)) { 78 | setErrorTextField(false) 79 | if (!viewModel.nextWord()) { 80 | showFinalScoreDialog() 81 | } 82 | } else { 83 | setErrorTextField(true) 84 | } 85 | } 86 | 87 | /* 88 | * Skips the current word without changing the score. 89 | * Increases the word count. 90 | * After the last word, the user is shown a Dialog with the final score. 91 | */ 92 | private fun onSkipWord() { 93 | if (viewModel.nextWord()) { 94 | setErrorTextField(false) 95 | } else { 96 | showFinalScoreDialog() 97 | } 98 | } 99 | 100 | /* 101 | * Creates and shows an AlertDialog with final score. 102 | */ 103 | private fun showFinalScoreDialog() { 104 | MaterialAlertDialogBuilder(requireContext()) 105 | .setTitle(getString(R.string.congratulations)) 106 | .setMessage(getString(R.string.you_scored, viewModel.score.value)) 107 | .setCancelable(false) 108 | .setNegativeButton(getString(R.string.exit)) { _, _ -> 109 | exitGame() 110 | } 111 | .setPositiveButton(getString(R.string.play_again)) { _, _ -> 112 | restartGame() 113 | } 114 | .show() 115 | } 116 | 117 | /* 118 | * Re-initializes the data in the ViewModel and updates the views with the new data, to 119 | * restart the game. 120 | */ 121 | private fun restartGame() { 122 | viewModel.reinitializeData() 123 | setErrorTextField(false) 124 | } 125 | 126 | /* 127 | * Exits the game. 128 | */ 129 | private fun exitGame() { 130 | activity?.finish() 131 | } 132 | 133 | /* 134 | * Sets and resets the text field error status. 135 | */ 136 | private fun setErrorTextField(error: Boolean) { 137 | if (error) { 138 | binding.textField.isErrorEnabled = true 139 | binding.textField.error = getString(R.string.try_again) 140 | } else { 141 | binding.textField.isErrorEnabled = false 142 | binding.textInputEditText.text = null 143 | } 144 | } 145 | } 146 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/unscramble/ui/game/GameViewModel.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 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.example.android.unscramble.ui.game 18 | 19 | import android.text.Spannable 20 | import android.text.SpannableString 21 | import android.text.style.TtsSpan 22 | import android.util.Log 23 | import androidx.lifecycle.LiveData 24 | import androidx.lifecycle.MutableLiveData 25 | import androidx.lifecycle.Transformations 26 | import androidx.lifecycle.ViewModel 27 | 28 | /** 29 | * ViewModel containing the app data and methods to process the data 30 | */ 31 | class GameViewModel : ViewModel() { 32 | private val _score = MutableLiveData(0) 33 | val score: LiveData 34 | get() = _score 35 | 36 | private val _currentWordCount = MutableLiveData(0) 37 | val currentWordCount: LiveData 38 | get() = _currentWordCount 39 | 40 | private val _currentScrambledWord = MutableLiveData() 41 | val currentScrambledWord: LiveData = Transformations.map(_currentScrambledWord) { 42 | if (it == null) { 43 | SpannableString("") 44 | } else { 45 | val scrambledWord = it.toString() 46 | val spannable: Spannable = SpannableString(scrambledWord) 47 | spannable.setSpan( 48 | TtsSpan.VerbatimBuilder(scrambledWord).build(), 49 | 0, 50 | scrambledWord.length, 51 | Spannable.SPAN_INCLUSIVE_INCLUSIVE 52 | ) 53 | spannable 54 | } 55 | } 56 | 57 | // List of words used in the game 58 | private var wordsList: MutableList = mutableListOf() 59 | private lateinit var currentWord: String 60 | 61 | private var isGameOver: Boolean = false 62 | 63 | 64 | init { 65 | getNextWord() 66 | } 67 | 68 | /* 69 | * Updates currentWord and currentScrambledWord with the next word. 70 | */ 71 | private fun getNextWord() { 72 | currentWord = allWordsList.random() 73 | val tempWord = currentWord.toCharArray() 74 | tempWord.shuffle() 75 | 76 | while (String(tempWord).equals(currentWord, false)) { 77 | tempWord.shuffle() 78 | } 79 | if (wordsList.contains(currentWord)) { 80 | getNextWord() 81 | } else { 82 | Log.d("Unscramble", "currentWord= $currentWord") 83 | _currentScrambledWord.value = String(tempWord) 84 | _currentWordCount.value = _currentWordCount.value?.inc() 85 | wordsList.add(currentWord) 86 | } 87 | } 88 | 89 | /* 90 | * Re-initializes the game data to restart the game. 91 | */ 92 | fun reinitializeData() { 93 | _score.value = 0 94 | _currentWordCount.value = 0 95 | wordsList.clear() 96 | getNextWord() 97 | isGameOver = false 98 | } 99 | 100 | /* 101 | * Increases the game score if the player’s word is correct. 102 | */ 103 | private fun increaseScore() { 104 | _score.value = _score.value?.plus(SCORE_INCREASE) 105 | } 106 | 107 | /* 108 | * Returns true if the player word is correct. 109 | * Increases the score accordingly. 110 | */ 111 | fun isUserWordCorrect(playerWord: String): Boolean { 112 | if (playerWord.equals(currentWord, true)) { 113 | increaseScore() 114 | return true 115 | } 116 | return false 117 | } 118 | 119 | /* 120 | * Returns true if the current word count is less than MAX_NO_OF_WORDS 121 | */ 122 | fun nextWord(): Boolean { 123 | return if (_currentWordCount.value!! < MAX_NO_OF_WORDS) { 124 | getNextWord() 125 | true 126 | } else { 127 | isGameOver = true 128 | false 129 | } 130 | } 131 | 132 | fun isGameOver() = isGameOver 133 | } 134 | -------------------------------------------------------------------------------- /app/src/main/java/com/example/android/unscramble/ui/game/ListofWords.kt: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2020 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.example.android.unscramble.ui.game 18 | 19 | 20 | const val MAX_NO_OF_WORDS = 10 21 | const val SCORE_INCREASE = 20 22 | 23 | // List with all the words for the Game 24 | val allWordsList: List = 25 | listOf("animal", 26 | "auto", 27 | "anecdote", 28 | "alphabet", 29 | "all", 30 | "awesome", 31 | "arise", 32 | "balloon", 33 | "basket", 34 | "bench", 35 | "best", 36 | "birthday", 37 | "book", 38 | "briefcase", 39 | "camera", 40 | "camping", 41 | "candle", 42 | "cat", 43 | "cauliflower", 44 | "chat", 45 | "children", 46 | "class", 47 | "classic", 48 | "classroom", 49 | "coffee", 50 | "colorful", 51 | "cookie", 52 | "creative", 53 | "cruise", 54 | "dance", 55 | "daytime", 56 | "dinosaur", 57 | "doorknob", 58 | "dine", 59 | "dream", 60 | "dusk", 61 | "eating", 62 | "elephant", 63 | "emerald", 64 | "eerie", 65 | "electric", 66 | "finish", 67 | "flowers", 68 | "follow", 69 | "fox", 70 | "frame", 71 | "free", 72 | "frequent", 73 | "funnel", 74 | "green", 75 | "guitar", 76 | "grocery", 77 | "glass", 78 | "great", 79 | "giggle", 80 | "haircut", 81 | "half", 82 | "homemade", 83 | "happen", 84 | "honey", 85 | "hurry", 86 | "hundred", 87 | "ice", 88 | "igloo", 89 | "invest", 90 | "invite", 91 | "icon", 92 | "introduce", 93 | "joke", 94 | "jovial", 95 | "journal", 96 | "jump", 97 | "join", 98 | "kangaroo", 99 | "keyboard", 100 | "kitchen", 101 | "koala", 102 | "kind", 103 | "kaleidoscope", 104 | "landscape", 105 | "late", 106 | "laugh", 107 | "learning", 108 | "lemon", 109 | "letter", 110 | "lily", 111 | "magazine", 112 | "marine", 113 | "marshmallow", 114 | "maze", 115 | "meditate", 116 | "melody", 117 | "minute", 118 | "monument", 119 | "moon", 120 | "motorcycle", 121 | "mountain", 122 | "music", 123 | "north", 124 | "nose", 125 | "night", 126 | "name", 127 | "never", 128 | "negotiate", 129 | "number", 130 | "opposite", 131 | "octopus", 132 | "oak", 133 | "order", 134 | "open", 135 | "polar", 136 | "pack", 137 | "painting", 138 | "person", 139 | "picnic", 140 | "pillow", 141 | "pizza", 142 | "podcast", 143 | "presentation", 144 | "puppy", 145 | "puzzle", 146 | "recipe", 147 | "release", 148 | "restaurant", 149 | "revolve", 150 | "rewind", 151 | "room", 152 | "run", 153 | "secret", 154 | "seed", 155 | "ship", 156 | "shirt", 157 | "should", 158 | "small", 159 | "spaceship", 160 | "stargazing", 161 | "skill", 162 | "street", 163 | "style", 164 | "sunrise", 165 | "taxi", 166 | "tidy", 167 | "timer", 168 | "together", 169 | "tooth", 170 | "tourist", 171 | "travel", 172 | "truck", 173 | "under", 174 | "useful", 175 | "unicorn", 176 | "unique", 177 | "uplift", 178 | "uniform", 179 | "vase", 180 | "violin", 181 | "visitor", 182 | "vision", 183 | "volume", 184 | "view", 185 | "walrus", 186 | "wander", 187 | "world", 188 | "winter", 189 | "well", 190 | "whirlwind", 191 | "x-ray", 192 | "xylophone", 193 | "yoga", 194 | "yogurt", 195 | "yoyo", 196 | "you", 197 | "year", 198 | "yummy", 199 | "zebra", 200 | "zigzag", 201 | "zoology", 202 | "zone", 203 | "zeal") -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_error.xml: -------------------------------------------------------------------------------- 1 | 16 | 17 | 20 | 21 | 22 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 16 | 17 | 22 | 26 | 29 | 30 | 31 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 16 | 17 | 22 | 26 | 29 | 32 | 35 | 38 | 41 | 44 | 45 | 46 | -------------------------------------------------------------------------------- /app/src/main/res/layout/game_fragment.xml: -------------------------------------------------------------------------------- 1 | 16 | 17 | 20 | 21 | 22 | 25 | 28 | 29 | 30 | 33 | 34 | 39 | 40 |