├── .github └── workflows │ └── android.yml ├── .gitignore ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── ic_launcher-playstore.png │ ├── java │ └── io │ │ └── github │ │ └── subhamtyagi │ │ └── quickcalculation │ │ ├── LaunchActivity.java │ │ ├── QuizActivity.java │ │ ├── SettingsActivity.java │ │ ├── dialog │ │ └── TimeDialog.java │ │ ├── factory │ │ ├── GenerateQuestion.java │ │ └── Question.java │ │ └── utils │ │ ├── CrashUtils.java │ │ ├── SpUtil.java │ │ └── Utils.java │ └── res │ ├── drawable-v24 │ └── ic_launcher_foreground.xml │ ├── layout │ ├── activity_launch.xml │ ├── activity_quiz.xml │ ├── settings_activity.xml │ └── time_dialog.xml │ ├── menu │ └── menu_main.xml │ ├── mipmap-anydpi-v26 │ ├── ic_launcher.xml │ └── ic_launcher_round.xml │ ├── mipmap-hdpi │ ├── ic_launcher_background.png │ └── ic_launcher_foreground.png │ ├── mipmap-mdpi │ ├── ic_launcher_background.png │ └── ic_launcher_foreground.png │ ├── mipmap-xhdpi │ ├── ic_launcher_background.png │ └── ic_launcher_foreground.png │ ├── mipmap-xxhdpi │ ├── ic_launcher_background.png │ └── ic_launcher_foreground.png │ ├── mipmap-xxxhdpi │ ├── ic_launcher_background.png │ └── ic_launcher_foreground.png │ ├── values-night │ └── colors.xml │ ├── values │ ├── arrays.xml │ ├── attrs.xml │ ├── colors.xml │ ├── dimens.xml │ ├── ic_launcher_background.xml │ ├── strings.xml │ └── themes.xml │ └── xml │ └── settings.xml ├── build.gradle ├── fastlane └── metadata │ └── android │ └── en-US │ ├── changelogs │ ├── 1.txt │ ├── 2.txt │ ├── 3.txt │ └── 4.txt │ ├── full_description.txt │ ├── images │ ├── icon.png │ └── phoneScreenshots │ │ ├── 1.png │ │ ├── 2.png │ │ ├── 3.png │ │ ├── 4.png │ │ ├── 5.png │ │ └── 6.png │ ├── short_description.txt │ └── title.txt ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.github/workflows/android.yml: -------------------------------------------------------------------------------- 1 | name: Android OCR CI 2 | 3 | on: 4 | push: 5 | branches: [main] 6 | pull_request: 7 | branches: [main] 8 | 9 | jobs: 10 | build: 11 | runs-on: ubuntu-latest 12 | 13 | steps: 14 | - uses: actions/checkout@v4 15 | - name: set up JDK 17 16 | uses: actions/setup-java@v4 17 | with: 18 | java-version: 17 19 | distribution: 'temurin' 20 | cache: gradle 21 | - uses: actions/cache@v4 22 | with: 23 | path: | 24 | ~/.gradle/caches 25 | ~/.gradle/wrapper 26 | key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*') }} 27 | restore-keys: | 28 | ${{ runner.os }}-gradle- 29 | - name: Grant execute permission for gradlew 30 | run: chmod +x gradlew 31 | - name: Compile debug with Gradle 32 | run: ./gradlew assembleDebug 33 | - uses: actions/upload-artifact@v4 34 | with: 35 | name: quick-calc-debug.apk 36 | path: app/build/outputs/apk/debug/*.apk 37 | - name: Compile release with Gradle 38 | run: ./gradlew assembleRelease 39 | - uses: actions/upload-artifact@v4 40 | with: 41 | name: quick-calc-release.apk 42 | path: app/build/outputs/apk/release/*.apk 43 | 44 | 45 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Built application files 2 | *.apk 3 | *.ap_ 4 | *.ab_ 5 | 6 | 7 | 8 | app/src/release/*.json 9 | # Files for the ART/Dalvik VM 10 | *.dex 11 | 12 | # Java class files 13 | *.class 14 | 15 | # Generated files 16 | bin/ 17 | gen/ 18 | out/ 19 | 20 | 21 | # Gradle files 22 | .gradle/ 23 | build/ 24 | 25 | 26 | # Local configuration file (sdk path, etc) 27 | local.properties 28 | 29 | # Proguard folder generated by Eclipse 30 | proguard/ 31 | 32 | # Log Files 33 | *.log 34 | 35 | # Android Studio Navigation editor temp files 36 | .navigation/ 37 | 38 | # Android Studio captures folder 39 | captures/ 40 | 41 | # IntelliJ 42 | *.iml 43 | .idea/workspace.xml 44 | .idea/tasks.xml 45 | .idea/gradle.xml 46 | .idea/assetWizardSettings.xml 47 | .idea/dictionaries 48 | .idea/libraries 49 | .idea/caches 50 | .idea/*.* 51 | .idea/* 52 | .idea/ 53 | .idea/*.xml 54 | .idea/copyright/ 55 | .idea/copyright/* 56 | .idea/copyright/profiles_settings.xml 57 | 58 | 59 | # Keystore files 60 | # Uncomment the following line if you do not want to check your keystore files in. 61 | *.jks 62 | 63 | 64 | 65 | # External native build folder generated in Android Studio 2.2 and later 66 | .externalNativeBuild 67 | 68 | 69 | # Google Services (e.g. APIs or Firebase) 70 | google-services.json 71 | *.json 72 | 73 | 74 | 75 | # Freeline 76 | freeline.py 77 | freeline/ 78 | freeline_project_description.json 79 | 80 | # fastlane 81 | fastlane/report.xml 82 | fastlane/Preview.html 83 | fastlane/screenshots 84 | fastlane/test_output 85 | fastlane/readme.md 86 | 87 | 88 | # Zip file 89 | *.zip 90 | *.rar 91 | *.gz 92 | *.tz 93 | 94 | 95 | #heap dump file 96 | *.hprof 97 | *.alloc 98 | 99 | # sha file 100 | *.sha 101 | 102 | 103 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ## Quick Calculation 2 | 3 | Improve your mathematical calculation speed with this app 4 | 5 | [Get it on F-Droid](https://f-droid.org/packages/io.github.subhamtyagi.quickcalculation/) 6 | 7 | ### Features 8 | 9 | - Addition, Multiplication, Subtractions, Division, Simplification, Simplification advance, Miscellaneous. 10 | - Custom Range for numbers. 11 | 12 | ### Screenshots 13 | | Operator | Quiz | Quiz | 14 | |:-:|:-:|:-:| 15 | | ![Operator](fastlane/metadata/android/en-US/images/phoneScreenshots/1.png?raw=true "Operator") | ![Add](fastlane/metadata/android/en-US/images/phoneScreenshots/2.png?raw=true "add") | ![Multiplication](fastlane/metadata/android/en-US/images/phoneScreenshots/3.png?raw=true "multiplication")| 16 | | Quiz | Quiz | Quiz | 17 | ![Simplification](fastlane/metadata/android/en-US/images/phoneScreenshots/4.png?raw=true "simplification") | ![Correct](fastlane/metadata/android/en-US/images/phoneScreenshots/5.png?raw=true "correct") | ![Wrong](fastlane/metadata/android/en-US/images/phoneScreenshots/6.png?raw=true "wrong") | 18 | 19 | 20 | #### Version 1.2 21 | 22 | ### App Icon License 23 | - App icon is [created](https://github.com/SubhamTyagi/quick-calculation/pull/2) by [Onno van den Dungen](https://github.com/Donnnno) 24 | - Copyright 2022 Onno van den Dungen 25 | - Licensed under CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/ 26 | 27 | 28 | 29 | 30 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | plugins { 2 | id 'com.android.application' 3 | } 4 | 5 | android { 6 | compileSdkVersion 34 7 | namespace = "io.github.subhamtyagi.quickcalculation" 8 | 9 | defaultConfig { 10 | applicationId "io.github.subhamtyagi.quickcalculation" 11 | //multiDexEnabled true 12 | minSdkVersion 21 13 | targetSdkVersion 34 14 | versionCode 4 15 | versionName "1.3" 16 | 17 | } 18 | 19 | buildTypes { 20 | release { 21 | minifyEnabled true 22 | shrinkResources true 23 | zipAlignEnabled true 24 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 25 | } 26 | } 27 | compileOptions { 28 | //coreLibraryDesugaringEnabled true 29 | sourceCompatibility JavaVersion.VERSION_1_8 30 | targetCompatibility JavaVersion.VERSION_1_8 31 | } 32 | 33 | } 34 | 35 | dependencies { 36 | implementation 'androidx.appcompat:appcompat:1.7.0' 37 | implementation 'com.google.android.material:material:1.12.0' 38 | implementation 'androidx.constraintlayout:constraintlayout:2.1.4' 39 | implementation 'androidx.gridlayout:gridlayout:1.0.0' 40 | implementation 'androidx.preference:preference:1.2.1' 41 | 42 | //coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5' 43 | 44 | } -------------------------------------------------------------------------------- /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 | 23 | 24 | -repackageclasses 25 | -allowaccessmodification 26 | #-flattenpackagehierarchy 27 | -dontskipnonpubliclibraryclasses 28 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 6 | 7 | 14 | 18 | 19 | 22 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | -------------------------------------------------------------------------------- /app/src/main/ic_launcher-playstore.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/SubhamTyagi/quick-calculation/8399e4f0ed3a79b1f35516e2244cef969ffdef05/app/src/main/ic_launcher-playstore.png -------------------------------------------------------------------------------- /app/src/main/java/io/github/subhamtyagi/quickcalculation/LaunchActivity.java: -------------------------------------------------------------------------------- 1 | package io.github.subhamtyagi.quickcalculation; 2 | 3 | import android.app.AlarmManager; 4 | import android.app.PendingIntent; 5 | import android.content.BroadcastReceiver; 6 | import android.content.Context; 7 | import android.content.Intent; 8 | import android.os.Build; 9 | import android.os.Bundle; 10 | import android.view.Menu; 11 | import android.view.MenuItem; 12 | import android.view.View; 13 | import android.widget.AdapterView; 14 | import android.widget.ArrayAdapter; 15 | import android.widget.EditText; 16 | import android.widget.Spinner; 17 | import android.widget.Toast; 18 | 19 | import androidx.annotation.RequiresApi; 20 | import androidx.appcompat.app.AppCompatActivity; 21 | 22 | import com.google.android.material.color.DynamicColors; 23 | 24 | import java.util.Calendar; 25 | 26 | import io.github.subhamtyagi.quickcalculation.utils.CrashUtils; 27 | import io.github.subhamtyagi.quickcalculation.utils.SpUtil; 28 | import io.github.subhamtyagi.quickcalculation.utils.Utils; 29 | 30 | 31 | public class LaunchActivity extends AppCompatActivity { 32 | 33 | AlarmManager manager; 34 | PendingIntent pendingIntent; 35 | private Spinner operationsSpinner, timerSpinner; 36 | private String operationName = "mix", timer = "30"; 37 | private EditText lower1, lower2, upper1, upper2; 38 | 39 | @Override 40 | protected void onCreate(Bundle savedInstanceState) { 41 | super.onCreate(savedInstanceState); 42 | 43 | new CrashUtils(getApplicationContext(), ""); 44 | SpUtil.getInstance().init(this); 45 | /*setTheme(Utils.getTheme(this));*/ 46 | DynamicColors.applyToActivityIfAvailable(this); 47 | setContentView(R.layout.activity_launch); 48 | 49 | operationsSpinner = findViewById(R.id.spinner_operator); 50 | timerSpinner = findViewById(R.id.spinner_timer); 51 | lower1 = findViewById(R.id.et_range1_lower); 52 | lower2 = findViewById(R.id.et_range2_lower); 53 | upper1 = findViewById(R.id.et_range1_upper); 54 | upper2 = findViewById(R.id.et_range2_upper); 55 | 56 | lower1.setText(SpUtil.getInstance().getString(Utils.LOWER_1, "11")); 57 | lower2.setText(SpUtil.getInstance().getString(Utils.LOWER_2, "11")); 58 | upper1.setText(SpUtil.getInstance().getString(Utils.UPPER_1, "99")); 59 | upper2.setText(SpUtil.getInstance().getString(Utils.UPPER_2, "99")); 60 | 61 | setAdapters(); 62 | 63 | operationsSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 64 | @Override 65 | public void onItemSelected(AdapterView adapterView, View view, int position, long l) { 66 | switch (position) { 67 | case 0: 68 | operationName = Utils.SUM; 69 | break; 70 | case 1: 71 | operationName = Utils.SUBSTRACT; 72 | break; 73 | case 2: 74 | operationName = Utils.MULTIPLICATION; 75 | break; 76 | case 3: 77 | operationName = Utils.DIVISION; 78 | break; 79 | case 4: 80 | operationName = Utils.SUM_SERIES; 81 | break; 82 | case 5: 83 | operationName = Utils.SIMPLIFICATION; 84 | break; 85 | case 6: 86 | operationName = Utils.SIMPLIFICATION_ADVANCE; 87 | break; 88 | default: 89 | operationName = Utils.MIX; 90 | 91 | } 92 | } 93 | 94 | @Override 95 | public void onNothingSelected(AdapterView adapterView) { 96 | 97 | } 98 | }); 99 | 100 | timerSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 101 | @Override 102 | public void onItemSelected(AdapterView adapterView, View view, int position, long l) { 103 | switch (position) { 104 | case 0: 105 | timer = "30"; 106 | break; 107 | case 1: 108 | timer = "45"; 109 | break; 110 | case 2: 111 | timer = "60"; 112 | break; 113 | case 3: 114 | timer = "90"; 115 | break; 116 | case 4: 117 | timer = "120"; 118 | break; 119 | case 5: 120 | timer = "300"; 121 | break; 122 | case 6: 123 | timer = "600"; 124 | break; 125 | 126 | } 127 | } 128 | 129 | @Override 130 | public void onNothingSelected(AdapterView adapterView) { 131 | 132 | } 133 | }); 134 | 135 | findViewById(R.id.btn_start).setOnClickListener(view -> { 136 | Intent i = new Intent(this, QuizActivity.class); 137 | i.putExtra(Utils.OPERATIONS, operationName); 138 | i.putExtra(Utils.TIME, timer); 139 | String l1 = getValueOf(lower1), 140 | l2 = getValueOf(lower2), 141 | u2 = getValueOf(upper2), 142 | u1 = getValueOf(upper1); 143 | 144 | if (l1 == null) { 145 | lower1.requestFocus(); 146 | } else if (u1 == null) { 147 | upper1.requestFocus(); 148 | } else if (l2 == null) { 149 | lower2.requestFocus(); 150 | } else if (u2 == null) { 151 | upper2.requestFocus(); 152 | } else { 153 | int iL1 = Integer.parseInt(l1); 154 | int iL2 = Integer.parseInt(l2); 155 | int iU1 = Integer.parseInt(u1); 156 | int iU2 = Integer.parseInt(u2); 157 | if (iU2 >= iL2) { 158 | if (iU1 >= iL1) { 159 | i.putExtra(Utils.LOWER_1, iL1); 160 | i.putExtra(Utils.LOWER_2, iL2); 161 | i.putExtra(Utils.UPPER_2, iU2); 162 | i.putExtra(Utils.UPPER_1, iU1); 163 | SpUtil.getInstance().putString(Utils.LOWER_1, String.valueOf(iL1)); 164 | SpUtil.getInstance().putString(Utils.LOWER_2, String.valueOf(iL2)); 165 | SpUtil.getInstance().putString(Utils.UPPER_1, String.valueOf(iU1)); 166 | SpUtil.getInstance().putString(Utils.UPPER_2, String.valueOf(iU2)); 167 | startActivity(i); 168 | overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out); 169 | } else { 170 | upper1.requestFocus(); 171 | Toast.makeText(this, getResources().getString(R.string.upper_value_must_be_greater), Toast.LENGTH_SHORT).show(); 172 | } 173 | } else { 174 | upper2.requestFocus(); 175 | Toast.makeText(this, getResources().getString(R.string.upper_value_must_be_greater), Toast.LENGTH_SHORT).show(); 176 | } 177 | } 178 | }); 179 | 180 | } 181 | 182 | @RequiresApi(api = Build.VERSION_CODES.M) 183 | private void setNotificationIfAny() { 184 | boolean isNotificationEnable = SpUtil.getInstance().getBoolean(getString(R.string.pf_notification_switch), false); 185 | Intent alarmIntent = new Intent(this, AlarmReceiver.class); 186 | if (pendingIntent != null && manager != null) { 187 | manager.cancel(pendingIntent); 188 | } else { 189 | pendingIntent = PendingIntent.getBroadcast(this, 0, alarmIntent, PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE); 190 | manager = (AlarmManager) getSystemService(Context.ALARM_SERVICE); 191 | } 192 | 193 | if (isNotificationEnable) { 194 | Calendar calendar = Calendar.getInstance(); 195 | calendar.setTimeInMillis(System.currentTimeMillis()); 196 | int hour = SpUtil.getInstance().getInt(getString(R.string.key_notification_hours), 8); 197 | int min = SpUtil.getInstance().getInt(getString(R.string.key_notification_minutes), 0); 198 | calendar.set(Calendar.HOUR_OF_DAY, hour); 199 | calendar.set(Calendar.MINUTE, min); 200 | calendar.set(Calendar.SECOND, 1); 201 | manager.setRepeating(AlarmManager.RTC_WAKEUP, 202 | calendar.getTimeInMillis(), 203 | AlarmManager.INTERVAL_DAY, pendingIntent); 204 | 205 | } else { 206 | manager.cancel(pendingIntent); 207 | } 208 | } 209 | 210 | public void setAdapters() { 211 | ArrayAdapter opAdapter; 212 | opAdapter = ArrayAdapter.createFromResource(this, R.array.operations, android.R.layout.simple_spinner_item); 213 | opAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 214 | ArrayAdapter timerAdapter = ArrayAdapter.createFromResource(this, R.array.timer, android.R.layout.simple_spinner_item); 215 | timerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 216 | operationsSpinner.setAdapter(opAdapter); 217 | timerSpinner.setAdapter(timerAdapter); 218 | } 219 | 220 | String getValueOf(EditText editText) { 221 | String string = editText.getText().toString(); 222 | if (string.isEmpty()) 223 | return null; 224 | else return string; 225 | } 226 | 227 | @Override 228 | public boolean onCreateOptionsMenu(Menu menu) { 229 | getMenuInflater().inflate(R.menu.menu_main, menu); 230 | return true; 231 | } 232 | 233 | @Override 234 | public boolean onOptionsItemSelected(MenuItem item) { 235 | int id = item.getItemId(); 236 | if (id == R.id.action_settings) { 237 | SpUtil.getInstance().putBoolean(getString(R.string.is_theme_changed), false); 238 | startActivity(new Intent(this, SettingsActivity.class)); 239 | return true; 240 | } 241 | return super.onOptionsItemSelected(item); 242 | } 243 | 244 | @Override 245 | protected void onResume() { 246 | super.onResume(); 247 | if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 248 | // setNotificationIfAny(); 249 | } 250 | 251 | /* if (SpUtil.getInstance().getBoolean(getString(R.string.is_theme_changed),false)){ 252 | SpUtil.getInstance().putBoolean(getString(R.string.is_theme_changed),false); 253 | recreate(); 254 | }*/ 255 | } 256 | 257 | public static class AlarmReceiver extends BroadcastReceiver { 258 | @Override 259 | public void onReceive(Context context, Intent intent) { 260 | // send notification 261 | // 262 | } 263 | } 264 | } -------------------------------------------------------------------------------- /app/src/main/java/io/github/subhamtyagi/quickcalculation/QuizActivity.java: -------------------------------------------------------------------------------- 1 | package io.github.subhamtyagi.quickcalculation; 2 | 3 | import android.annotation.SuppressLint; 4 | import android.content.Intent; 5 | import android.os.Build; 6 | import android.os.Bundle; 7 | import android.os.CountDownTimer; 8 | import android.os.VibrationEffect; 9 | import android.os.Vibrator; 10 | import android.view.View; 11 | import android.widget.Button; 12 | import android.widget.TextView; 13 | 14 | import androidx.appcompat.app.AppCompatActivity; 15 | import androidx.constraintlayout.widget.ConstraintLayout; 16 | import com.google.android.material.color.DynamicColors; 17 | import io.github.subhamtyagi.quickcalculation.factory.GenerateQuestion; 18 | import io.github.subhamtyagi.quickcalculation.factory.Question; 19 | import io.github.subhamtyagi.quickcalculation.utils.Utils; 20 | import io.github.subhamtyagi.quickcalculation.utils.SpUtil; 21 | 22 | public class QuizActivity extends AppCompatActivity { 23 | 24 | private ConstraintLayout mReportCardView; 25 | private Button mOption1Button; 26 | private Button mOption2Button; 27 | private Button mOption3Button; 28 | private Button mOption4Button; 29 | private Button mPlayAgainButton; 30 | private TextView mScoreTextView; 31 | private TextView mTimerTextView; 32 | private TextView mQuestionTextView; 33 | private TextView mResultTextView; 34 | private TextView mTotalAttemptTextView; 35 | private TextView mTotalCorrectTextView; 36 | 37 | private Vibrator vibrator; 38 | private CountDownTimer countDownTimer; 39 | 40 | private int mCorrectCount = 0; 41 | private int mTotalQuestionCount = 0; 42 | private int mLowerRange1; 43 | private int mLowerRange2; 44 | private int mUpperRange1; 45 | private int mUpperRange2; 46 | 47 | private String operation = null; 48 | private String timer = null; 49 | 50 | private Question question; 51 | boolean isVibrationEnable ; 52 | 53 | @Override 54 | protected void onCreate(Bundle savedInstanceState) { 55 | super.onCreate(savedInstanceState); 56 | DynamicColors.applyToActivityIfAvailable(this); 57 | setContentView(R.layout.activity_quiz); 58 | SpUtil.getInstance().init(this); 59 | 60 | mOption1Button = findViewById(R.id.button0); 61 | mOption2Button = findViewById(R.id.button1); 62 | mOption3Button = findViewById(R.id.button2); 63 | mOption4Button = findViewById(R.id.button3); 64 | 65 | mPlayAgainButton = findViewById(R.id.btn_play_again); 66 | mReportCardView = findViewById(R.id.results); 67 | mResultTextView = findViewById(R.id.resultText); 68 | mQuestionTextView = findViewById(R.id.question); 69 | mTimerTextView = findViewById(R.id.timer); 70 | mScoreTextView = findViewById(R.id.score); 71 | mTotalAttemptTextView = findViewById(R.id.tv_total_attempt_result); 72 | mTotalCorrectTextView = findViewById(R.id.tv_total_correct_result); 73 | 74 | vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE); 75 | isVibrationEnable = SpUtil.getInstance().getBoolean(getString(R.string.pf_vibration_switch), true); 76 | 77 | mOption1Button.setOnClickListener(this::checkForAnswer); 78 | mOption2Button.setOnClickListener(this::checkForAnswer); 79 | mOption3Button.setOnClickListener(this::checkForAnswer); 80 | mOption4Button.setOnClickListener(this::checkForAnswer); 81 | findViewById(R.id.btn_submit).setOnClickListener(view -> { 82 | countDownTimer.onFinish(); 83 | countDownTimer.cancel(); 84 | }); 85 | 86 | mPlayAgainButton.setOnClickListener(this::play); 87 | 88 | mReportCardView.setVisibility(View.INVISIBLE); 89 | 90 | Intent get = getIntent(); 91 | operation = get.getStringExtra(Utils.OPERATIONS); 92 | 93 | if (operation.equals(Utils.SIMPLIFICATION) || operation.equals(Utils.SIMPLIFICATION_ADVANCE) || operation.equals(Utils.MIX) || operation.equals(Utils.SUM_SERIES)) { 94 | mQuestionTextView.setTextSize(22); 95 | } 96 | timer = get.getStringExtra(Utils.TIME); 97 | mLowerRange1 = get.getIntExtra(Utils.LOWER_1, 11); 98 | mLowerRange2 = get.getIntExtra(Utils.LOWER_2, 11); 99 | mUpperRange2 = get.getIntExtra(Utils.UPPER_2, 99); 100 | mUpperRange1 = get.getIntExtra(Utils.UPPER_1, 99); 101 | 102 | play(mPlayAgainButton); 103 | } 104 | 105 | public void play(View v) { 106 | mReportCardView.setVisibility(View.INVISIBLE); 107 | // mReportCardView.animate().translationY(-5000); 108 | mResultTextView.setText(""); 109 | mScoreTextView.setText("0 / 0"); 110 | mCorrectCount = 0; 111 | mTotalQuestionCount = 0; 112 | showNewQuestion(); 113 | 114 | mPlayAgainButton.setVisibility(View.INVISIBLE); 115 | startTimer(); 116 | } 117 | 118 | private void showNewQuestion() { 119 | switch (operation) { 120 | case Utils.SUM: 121 | question = GenerateQuestion.addition(mLowerRange1, mUpperRange1, mLowerRange2, mUpperRange2); 122 | break; 123 | case Utils.SUBSTRACT: 124 | question = GenerateQuestion.subtract(mLowerRange1, mUpperRange1, mLowerRange2, mUpperRange2); 125 | break; 126 | case Utils.MULTIPLICATION: 127 | question = GenerateQuestion.multiplication(mLowerRange1, mUpperRange1, mLowerRange2, mUpperRange2); 128 | break; 129 | case Utils.DIVISION: 130 | question = GenerateQuestion.division(mLowerRange1, mUpperRange1, mLowerRange2, mUpperRange2); 131 | break; 132 | case Utils.SUM_SERIES: 133 | question = GenerateQuestion.sumSeries(mLowerRange1, mUpperRange1); 134 | break; 135 | case Utils.SIMPLIFICATION: 136 | question = GenerateQuestion.simplification(mLowerRange1, mUpperRange1); 137 | break; 138 | case Utils.SIMPLIFICATION_ADVANCE: 139 | question = GenerateQuestion.simplificationAdvance(mLowerRange1, mUpperRange1, mLowerRange2, mUpperRange2); 140 | break; 141 | default: 142 | question = GenerateQuestion.mix(mLowerRange1, mUpperRange1, mLowerRange2, mUpperRange2); 143 | 144 | 145 | } 146 | //set options 147 | mQuestionTextView.setText(question.getQuestion()); 148 | mOption1Button.setText(question.getOption1()); 149 | mOption2Button.setText(question.getOption2()); 150 | mOption3Button.setText(question.getOption3()); 151 | mOption4Button.setText(question.getOption4()); 152 | } 153 | 154 | public void startTimer() { 155 | int t = Integer.parseInt(timer) * 1000 + 100; 156 | countDownTimer = new CountDownTimer(t, 1000) { 157 | @Override 158 | public void onTick(long l) { 159 | String time = (int) l / 1000 + "s"; 160 | mTimerTextView.setText(time); 161 | } 162 | 163 | @SuppressLint("SetTextI18n") 164 | @Override 165 | public void onFinish() { 166 | mResultTextView.setText(getString(R.string.done)); 167 | mReportCardView.setVisibility(View.VISIBLE); 168 | mReportCardView.setY(2000); 169 | mReportCardView.animate().translationYBy(-1990).setDuration(1350); 170 | mTotalAttemptTextView.setText(Integer.toString(mTotalQuestionCount)); 171 | mTotalCorrectTextView.setText(Integer.toString(mCorrectCount)); 172 | mPlayAgainButton.setVisibility(View.VISIBLE); 173 | } 174 | }.start(); 175 | } 176 | 177 | @SuppressLint("SetTextI18n") 178 | public void checkForAnswer(View view) { 179 | int clickedAnswer = Integer.parseInt(((Button) view).getText().toString()); 180 | if (clickedAnswer == question.getCorrectAnswer()) { 181 | mResultTextView.setText(R.string.correct); 182 | mResultTextView.setTextColor(getResources().getColor(R.color.materialGreen)); 183 | mCorrectCount++; 184 | } else { 185 | mResultTextView.setText(R.string.wrong); 186 | mResultTextView.setTextColor(getResources().getColor(R.color.materialRed)); 187 | //vibrate phone 188 | if(isVibrationEnable){ 189 | if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { 190 | vibrator.vibrate(VibrationEffect.createOneShot(100, VibrationEffect.DEFAULT_AMPLITUDE)); 191 | } else { 192 | vibrator.vibrate(100); 193 | } 194 | } 195 | } 196 | showNewQuestion(); 197 | mTotalQuestionCount++; 198 | mScoreTextView.setText(mCorrectCount + "/" + mTotalQuestionCount); 199 | } 200 | 201 | /* 202 | * 203 | * BottomSheetResultsFragment bottomSheetResultsFragment = BottomSheetResultsFragment.newInstance(text); 204 | * bottomSheetResultsFragment.show(getSupportFragmentManager(), "bottomSheetResultsFragment"); 205 | * 206 | */ 207 | } -------------------------------------------------------------------------------- /app/src/main/java/io/github/subhamtyagi/quickcalculation/SettingsActivity.java: -------------------------------------------------------------------------------- 1 | package io.github.subhamtyagi.quickcalculation; 2 | 3 | import android.os.Build; 4 | import android.os.Bundle; 5 | 6 | import androidx.appcompat.app.ActionBar; 7 | import androidx.appcompat.app.AppCompatActivity; 8 | import androidx.preference.Preference; 9 | import androidx.preference.PreferenceFragmentCompat; 10 | import androidx.preference.SwitchPreferenceCompat; 11 | import com.google.android.material.color.DynamicColors; 12 | 13 | import io.github.subhamtyagi.quickcalculation.dialog.TimeDialog; 14 | import io.github.subhamtyagi.quickcalculation.utils.SpUtil; 15 | 16 | public class SettingsActivity extends AppCompatActivity { 17 | 18 | @Override 19 | protected void onCreate(Bundle savedInstanceState) { 20 | super.onCreate(savedInstanceState); 21 | SpUtil.getInstance().init(this); 22 | /* setTheme(Utils.getTheme(this));*/ 23 | DynamicColors.applyToActivityIfAvailable(this); 24 | setContentView(R.layout.settings_activity); 25 | if (savedInstanceState == null) { 26 | getSupportFragmentManager() 27 | .beginTransaction() 28 | .replace(R.id.settings, new SettingsFragment()) 29 | .commit(); 30 | } 31 | ActionBar actionBar = getSupportActionBar(); 32 | if (actionBar != null) { 33 | actionBar.setDisplayHomeAsUpEnabled(true); 34 | } 35 | 36 | 37 | } 38 | 39 | 40 | public static class SettingsFragment extends PreferenceFragmentCompat { 41 | 42 | @Override 43 | public void onCreatePreferences(Bundle savedInstanceState, String rootKey) { 44 | setPreferencesFromResource(R.xml.settings, rootKey); 45 | /*ListPreference theme = findPreference(getString(R.string.pf_theme));*/ 46 | SwitchPreferenceCompat notification = findPreference(getString(R.string.pf_notification_switch)); 47 | Preference time = findPreference(getString(R.string.pf_notification_time)); 48 | 49 | if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 50 | assert notification != null; 51 | notification.setOnPreferenceChangeListener((preference, newValue) -> { 52 | boolean b = (boolean) newValue; 53 | assert time != null; 54 | time.setVisible(b); 55 | if (b) { 56 | String msg = SpUtil.getInstance().getInt(getContext().getString(R.string.key_notification_hours)) + ":" 57 | + SpUtil.getInstance().getInt(getContext().getString(R.string.key_notification_minutes)); 58 | time.setSummary(msg); 59 | } 60 | return true; 61 | }); 62 | 63 | assert time != null; 64 | time.setOnPreferenceClickListener(preference -> { 65 | new TimeDialog(getContext()).show(); 66 | return true; 67 | }); 68 | } else { 69 | notification.setVisible(false); 70 | time.setVisible(false); 71 | } 72 | 73 | /* assert theme != null; 74 | theme.setOnPreferenceChangeListener((preference, newValue) -> { 75 | theme.setSummary((String) newValue); 76 | SpUtil.getInstance().putBoolean(getContext().getString(R.string.is_theme_changed),true); 77 | return true; 78 | });*/ 79 | } 80 | } 81 | 82 | } -------------------------------------------------------------------------------- /app/src/main/java/io/github/subhamtyagi/quickcalculation/dialog/TimeDialog.java: -------------------------------------------------------------------------------- 1 | package io.github.subhamtyagi.quickcalculation.dialog; 2 | 3 | 4 | import android.annotation.SuppressLint; 5 | import android.app.Dialog; 6 | import android.content.Context; 7 | import android.os.Build; 8 | import android.os.Bundle; 9 | import android.util.Log; 10 | import android.view.View; 11 | import android.view.Window; 12 | import android.widget.Button; 13 | import android.widget.TimePicker; 14 | 15 | import androidx.annotation.NonNull; 16 | import androidx.annotation.Nullable; 17 | import androidx.annotation.RequiresApi; 18 | 19 | import java.util.Calendar; 20 | 21 | import io.github.subhamtyagi.quickcalculation.R; 22 | import io.github.subhamtyagi.quickcalculation.utils.SpUtil; 23 | 24 | 25 | /** 26 | * Time setter dialog. 27 | */ 28 | 29 | @RequiresApi(api = Build.VERSION_CODES.M) 30 | public class TimeDialog extends Dialog 31 | implements View.OnClickListener, TimePicker.OnTimeChangedListener { 32 | 33 | private int mHour; 34 | private int mMinute; 35 | 36 | public TimeDialog(@NonNull Context context) { 37 | super(context); 38 | } 39 | 40 | 41 | @Nullable 42 | @Override 43 | protected void onCreate(Bundle savedInstanceState) { 44 | super.onCreate(savedInstanceState); 45 | requestWindowFeature(Window.FEATURE_NO_TITLE); 46 | setContentView(R.layout.time_dialog); 47 | initData(); 48 | initWidget(); 49 | } 50 | 51 | private void initData() { 52 | Calendar calendar = Calendar.getInstance(); 53 | mHour = calendar.get(Calendar.HOUR_OF_DAY); 54 | mMinute = calendar.get(Calendar.MINUTE); 55 | 56 | } 57 | 58 | 59 | private void initWidget() { 60 | Button done = findViewById(R.id.dialog_time_done); 61 | done.setOnClickListener(this); 62 | Button cancel = findViewById(R.id.dialog_time_cancel); 63 | cancel.setOnClickListener(this); 64 | TimePicker timePicker = findViewById(R.id.dialog_time_picker); 65 | timePicker.setIs24HourView(true); 66 | timePicker.setHour(SpUtil.getInstance().getInt(getContext().getString(R.string.key_notification_hours), 8)); 67 | timePicker.setMinute(SpUtil.getInstance().getInt(getContext().getString(R.string.key_notification_minutes), 0)); 68 | timePicker.setOnTimeChangedListener(this); 69 | } 70 | 71 | @Override 72 | public void onTimeChanged(TimePicker timePicker, int i, int i1) { 73 | mHour = i; 74 | mMinute = i1; 75 | } 76 | 77 | // on click. 78 | 79 | @SuppressLint("NonConstantResourceId") 80 | @Override 81 | public void onClick(View v) { 82 | switch (v.getId()) { 83 | case R.id.dialog_time_cancel: 84 | dismiss(); 85 | break; 86 | 87 | case R.id.dialog_time_done: 88 | //SAVE DATA TO PREFERENCES 89 | SpUtil.getInstance().putInt(getContext().getString(R.string.key_notification_hours), mHour); 90 | SpUtil.getInstance().putInt(getContext().getString(R.string.key_notification_minutes), mMinute); 91 | 92 | Log.d("dialog", "onClick: " + mHour + " : " + mMinute); 93 | dismiss(); 94 | break; 95 | } 96 | } 97 | } -------------------------------------------------------------------------------- /app/src/main/java/io/github/subhamtyagi/quickcalculation/factory/GenerateQuestion.java: -------------------------------------------------------------------------------- 1 | package io.github.subhamtyagi.quickcalculation.factory; 2 | 3 | import java.util.Random; 4 | 5 | public class GenerateQuestion { 6 | 7 | public static Question multiplication(int range_min, int range_max, int range_min2, int range_max2) { 8 | Random rand = new Random(); 9 | int a = rand.nextInt(range_max - range_min + 1) + range_min; 10 | int b = rand.nextInt(range_max2 - range_min2 + 1) + range_min2; 11 | return new Question(a + " x " + b, a * b); 12 | // "The End, Bas Yahi tak tha jo tha "; 13 | 14 | } 15 | 16 | public static Question subtract(int range_min, int range_max, int range_min2, int range_max2) { 17 | Random rand = new Random(); 18 | int a = rand.nextInt(range_max - range_min + 1) + range_min; 19 | int b = rand.nextInt(range_max2 - range_min2 + 1) + range_min2; 20 | return new Question(a + " - " + b, a - b); 21 | // "The End, Bas Yahi tak tha jo tha "; 22 | 23 | } 24 | 25 | public static Question addition(int range_min, int range_max, int range_min2, int range_max2) { 26 | Random rand = new Random(); 27 | int a = rand.nextInt(range_max - range_min + 1) + range_min; 28 | int b = rand.nextInt(range_max2 - range_min2 + 1) + range_min2; 29 | return new Question(a + " + " + b, a + b); 30 | } 31 | 32 | public static Question division(int range_min, int range_max, int range_min2, int range_max2) { 33 | Random rand = new Random(); 34 | int dividend, divisor; 35 | do { 36 | int a = rand.nextInt(range_max - range_min + 1) + range_min; 37 | int b = rand.nextInt(range_max2 - range_min2 + 1) + range_min2; 38 | dividend = a * b; 39 | divisor = Math.min(a, b); 40 | } while (divisor == 0); 41 | int answer = dividend / divisor; 42 | return new Question(dividend + "÷" + divisor, answer); 43 | } 44 | 45 | public static Question mix(int mLowerRange1, int mUpperRange1, int mLowerRange2, int mUpperRange2) { 46 | Random rand = new Random(); 47 | int a = rand.nextInt(7); 48 | switch (a) { 49 | case 0: 50 | return multiplication(mLowerRange1, mUpperRange1, mLowerRange2, mUpperRange2); 51 | case 1: 52 | return addition(mLowerRange1, mUpperRange1, mLowerRange2, mUpperRange2); 53 | case 2: 54 | return subtract(mLowerRange1, mUpperRange1, mLowerRange2, mUpperRange2); 55 | case 3: 56 | return simplification(mLowerRange1, mUpperRange1); 57 | case 4: 58 | return simplificationAdvance(mLowerRange1, mUpperRange1, mLowerRange2, mUpperRange2); 59 | case 5: 60 | return sumSeries(mLowerRange1, mUpperRange1); 61 | default: 62 | return division(mLowerRange1, mUpperRange1, mLowerRange2, mUpperRange2); 63 | 64 | } 65 | } 66 | 67 | public static Question sumSeries(int range_min, int range_max) { 68 | Random rand = new Random(); 69 | int a = rand.nextInt(range_max - range_min + 1) + range_min; 70 | int depth = 0; 71 | while (depth == 0) depth = rand.nextInt(7); 72 | int answer = a; 73 | StringBuilder questionBuilder = new StringBuilder(); 74 | questionBuilder.append(a); 75 | for (int i = 0; i < depth; i++) { 76 | questionBuilder.append("+"); 77 | a = rand.nextInt(range_max - range_min + 1) + range_min; 78 | questionBuilder.append(a); 79 | answer += a; 80 | } 81 | return new Question(questionBuilder.toString(), answer); 82 | } 83 | 84 | public static Question simplification(int range_min, int range_max) { 85 | StringBuilder stringBuffer = new StringBuilder(); 86 | Random random = new Random(); 87 | int length = random.nextInt(10 - 2 + 1) + 2; 88 | int j = 0; 89 | int answer = 0; 90 | int number1; 91 | boolean sign = false; 92 | do { 93 | number1 = random.nextInt(range_max - range_min + 1) + range_min; 94 | if (sign) { 95 | answer -= number1; 96 | } else { 97 | answer += number1; 98 | } 99 | sign = random.nextBoolean(); 100 | stringBuffer.append(number1); 101 | j++; 102 | if (j != length) { 103 | if (sign) { 104 | stringBuffer.append("-"); 105 | } else stringBuffer.append("+"); 106 | } 107 | } while (j < length); 108 | return new Question(stringBuffer.toString(), answer); 109 | 110 | } 111 | 112 | public static Question simplificationAdvance(int range_min, int range_max, int range_min2, int range_max2) { 113 | StringBuilder stringBuffer = new StringBuilder(); 114 | Random random = new Random(); 115 | 116 | int length = random.nextInt(10 - 2 + 1) + 2; 117 | int j = 0; 118 | int answer = 0; 119 | int number1; 120 | int number2; 121 | int number3; 122 | boolean sign = false; 123 | 124 | Random random1 = new Random(); 125 | int ops; 126 | Node node; 127 | 128 | do { 129 | number1 = random.nextInt(range_max - range_min + 1) + range_min; 130 | number2 = random.nextInt(range_max2 - range_min2 + 1) + range_min2; 131 | do { 132 | number3 = random.nextInt(range_max - range_min + 1) + range_min; 133 | } while (number3 == 0); 134 | 135 | ops = random1.nextInt(4); 136 | switch (ops) { 137 | case 2: 138 | node = generateTreeNode(number1, number2, number3, "x"); 139 | break; 140 | case 3: { 141 | while (number1 == 0) 142 | number1 = random.nextInt(range_max - range_min + 1) + range_min; 143 | while (number2 == 0) 144 | number2 = random.nextInt(range_max2 - range_min2 + 1) + range_min2; 145 | node = generateTreeNode(number1 * number2, number2, number3, "/"); 146 | break; 147 | } 148 | default: 149 | node = new Node(number1 + "", number1); 150 | break; 151 | 152 | } 153 | number1 = node.second; 154 | if (sign) { 155 | answer -= number1; 156 | } else { 157 | answer += number1; 158 | } 159 | 160 | sign = random.nextBoolean(); 161 | stringBuffer.append(node.first); 162 | j++; 163 | if (j != length) { 164 | if (sign) { 165 | stringBuffer.append("-"); 166 | } else stringBuffer.append("+"); 167 | } 168 | 169 | } while (j < length); 170 | return new Question(stringBuffer.toString(), answer); 171 | } 172 | 173 | private static Node generateTreeNode(int n1, int n2, int n3, String operator) { 174 | Random ra = new Random(); 175 | int depth = ra.nextInt(8); 176 | switch (operator) { 177 | case "x": { 178 | if (depth < 5) { 179 | return new Node(n1 + "x" + n2 + "x" + n3, n1 * n2 * n3); 180 | } else 181 | return new Node(n1 + "x" + n2, n1 * n2); 182 | } 183 | case "/": { 184 | if (depth < 3) { 185 | int temp = n1 * n3; 186 | return new Node(temp + "÷" + n2 + "÷" + n3, n1 / n2); 187 | } else if (depth < 5) { 188 | return new Node(n1 + "÷" + n2 + "x" + n3, n1 * n3 / n2); 189 | } 190 | return new Node(n1 + "÷" + n2, n1 / n2); 191 | } 192 | default: 193 | return new Node(n1 + "", n1);// never happen 194 | } 195 | } 196 | 197 | private static class Node { 198 | String first; 199 | int second; 200 | 201 | public Node(String s, int i) { 202 | first = s; 203 | second = i; 204 | } 205 | } 206 | } 207 | 208 | 209 | -------------------------------------------------------------------------------- /app/src/main/java/io/github/subhamtyagi/quickcalculation/factory/Question.java: -------------------------------------------------------------------------------- 1 | package io.github.subhamtyagi.quickcalculation.factory; 2 | 3 | import java.util.ArrayList; 4 | import java.util.Collections; 5 | import java.util.Random; 6 | 7 | public class Question { 8 | private final ArrayList arrayList = new ArrayList<>(4); 9 | private final String question; 10 | private final int correctAnswer; 11 | 12 | Question(String question, int correctAnswer) { 13 | this.question = question; 14 | this.correctAnswer = correctAnswer; 15 | 16 | Random r = new Random(); 17 | boolean b = r.nextBoolean(); 18 | boolean c = r.nextBoolean(); 19 | if (b) { 20 | arrayList.add(correctAnswer + 30); 21 | arrayList.add(correctAnswer + 10); 22 | arrayList.add(correctAnswer + 20); 23 | 24 | } else if (c) { 25 | arrayList.add(correctAnswer - 30); 26 | arrayList.add(correctAnswer + 10); 27 | arrayList.add(correctAnswer - 20); 28 | } else { 29 | arrayList.add(correctAnswer - 30); 30 | arrayList.add(correctAnswer - 10); 31 | arrayList.add(correctAnswer - 20); 32 | } 33 | arrayList.add(correctAnswer); 34 | Collections.shuffle(arrayList); 35 | 36 | } 37 | 38 | @SuppressWarnings("unused") 39 | Question(String question, int correctAnswer, int wrongAnswer) { 40 | this.question = question; 41 | this.correctAnswer = correctAnswer; 42 | 43 | Random r = new Random(); 44 | boolean b = r.nextBoolean(); 45 | boolean c = r.nextBoolean(); 46 | if (b) { 47 | arrayList.add(wrongAnswer); 48 | arrayList.add(correctAnswer + 10); 49 | arrayList.add(correctAnswer + 20); 50 | 51 | } else if (c) { 52 | arrayList.add(wrongAnswer); 53 | arrayList.add(correctAnswer - 10); 54 | arrayList.add(correctAnswer - 20); 55 | } else { 56 | arrayList.add(wrongAnswer); 57 | arrayList.add(correctAnswer - 10); 58 | arrayList.add(correctAnswer + 20); 59 | } 60 | arrayList.add(correctAnswer); 61 | Collections.shuffle(arrayList); 62 | 63 | } 64 | 65 | public String getQuestion() { 66 | return question; 67 | } 68 | 69 | public String getOption1() { 70 | return arrayList.get(0).toString(); 71 | } 72 | 73 | public String getOption2() { 74 | return arrayList.get(1).toString(); 75 | } 76 | 77 | public String getOption3() { 78 | return arrayList.get(2).toString(); 79 | } 80 | 81 | public String getOption4() { 82 | return arrayList.get(3).toString(); 83 | } 84 | 85 | public int getCorrectAnswer() { 86 | return correctAnswer; 87 | } 88 | 89 | 90 | } 91 | -------------------------------------------------------------------------------- /app/src/main/java/io/github/subhamtyagi/quickcalculation/utils/CrashUtils.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Last Launcher 3 | * Copyright (C) 2019,2020 Shubham Tyagi 4 | * 5 | * This program is free software: you can redistribute it and/or modify 6 | * it under the terms of the GNU General Public License as published by 7 | * the Free Software Foundation, either version 3 of the License, or 8 | * (at your option) any later version. 9 | * 10 | * This program is distributed in the hope that it will be useful, 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 | * GNU General Public License for more details. 14 | * 15 | * You should have received a copy of the GNU General Public License 16 | * along with this program. If not, see . 17 | */ 18 | 19 | package io.github.subhamtyagi.quickcalculation.utils; 20 | 21 | import android.content.Context; 22 | import android.text.TextUtils; 23 | import android.util.Log; 24 | 25 | import java.io.BufferedWriter; 26 | import java.io.File; 27 | import java.io.FileWriter; 28 | import java.io.PrintWriter; 29 | import java.io.StringWriter; 30 | import java.io.Writer; 31 | import java.text.SimpleDateFormat; 32 | import java.util.Date; 33 | import java.util.Locale; 34 | 35 | //ONLY included in DEBUG BUILD: 36 | public class CrashUtils implements Thread.UncaughtExceptionHandler { 37 | 38 | private static final String EXCEPTION_SUFFIX = "_exception"; 39 | private static final String CRASH_SUFFIX = "_crash"; 40 | private static final String FILE_EXTENSION = ".txt"; 41 | private static final String CRASH_REPORT_DIR = "crashReports"; 42 | 43 | private static final String TAG = "CrashUtils"; 44 | 45 | 46 | private final Thread.UncaughtExceptionHandler exceptionHandler; 47 | 48 | private final Context applicationContext; 49 | private final String crashReportPath; 50 | 51 | public CrashUtils(Context context, String crashReportSavePath) { 52 | this.exceptionHandler = Thread.getDefaultUncaughtExceptionHandler(); 53 | applicationContext = context; 54 | crashReportPath = crashReportSavePath; 55 | if (!(Thread.getDefaultUncaughtExceptionHandler() instanceof CrashUtils)) { 56 | Thread.setDefaultUncaughtExceptionHandler(this); 57 | } 58 | } 59 | 60 | private static String getStackTrace(Throwable e) { 61 | final Writer result = new StringWriter(); 62 | final PrintWriter printWriter = new PrintWriter(result); 63 | e.printStackTrace(printWriter); 64 | String crashLog = result.toString(); 65 | printWriter.close(); 66 | return crashLog; 67 | } 68 | 69 | @Override 70 | public void uncaughtException(Thread thread, Throwable throwable) { 71 | saveCrashReport(throwable); 72 | exceptionHandler.uncaughtException(thread, throwable); 73 | } 74 | 75 | private void saveCrashReport(final Throwable throwable) { 76 | SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault()); 77 | String filename = dateFormat.format(new Date()) + CRASH_SUFFIX + FILE_EXTENSION; 78 | writeToFile(crashReportPath, filename, getStackTrace(throwable)); 79 | 80 | } 81 | 82 | private void writeToFile(String crashReportPath, String filename, String crashLog) { 83 | 84 | if (TextUtils.isEmpty(crashReportPath)) { 85 | crashReportPath = getDefaultPath(); 86 | } 87 | 88 | File crashDir = new File(crashReportPath); 89 | if (!crashDir.exists() || !crashDir.isDirectory()) { 90 | crashReportPath = getDefaultPath(); 91 | Log.e(TAG, "Path provided doesn't exists : " + crashDir + "\nSaving crash report at : " + getDefaultPath()); 92 | } 93 | 94 | BufferedWriter bufferedWriter; 95 | try { 96 | bufferedWriter = new BufferedWriter(new FileWriter( 97 | crashReportPath + File.separator + filename)); 98 | 99 | bufferedWriter.write(crashLog); 100 | bufferedWriter.flush(); 101 | bufferedWriter.close(); 102 | Log.d(TAG, "crash report saved in : " + crashReportPath); 103 | } catch (Exception e) { 104 | e.printStackTrace(); 105 | } 106 | } 107 | 108 | private String getDefaultPath() { 109 | String defaultPath = applicationContext.getExternalFilesDir(null).getAbsolutePath() 110 | + File.separator + CRASH_REPORT_DIR; 111 | File file = new File(defaultPath); 112 | file.mkdirs(); 113 | return defaultPath; 114 | } 115 | 116 | public void logException(final Exception exception) { 117 | new Thread(() -> { 118 | SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault()); 119 | final String filename = dateFormat.format(new Date()) + EXCEPTION_SUFFIX + FILE_EXTENSION; 120 | writeToFile(crashReportPath, filename, getStackTrace(exception)); 121 | }).start(); 122 | } 123 | 124 | } 125 | -------------------------------------------------------------------------------- /app/src/main/java/io/github/subhamtyagi/quickcalculation/utils/SpUtil.java: -------------------------------------------------------------------------------- 1 | package io.github.subhamtyagi.quickcalculation.utils; 2 | 3 | import android.content.Context; 4 | import android.content.SharedPreferences; 5 | import android.content.SharedPreferences.Editor; 6 | import android.preference.PreferenceManager; 7 | 8 | import androidx.annotation.Nullable; 9 | 10 | import java.util.Set; 11 | 12 | 13 | /** 14 | * A util class for SharedPreferences 15 | */ 16 | public class SpUtil { 17 | private volatile static SpUtil mInstance; 18 | private Context mContext; 19 | private SharedPreferences mPref; 20 | 21 | private SpUtil() { 22 | } 23 | 24 | /** 25 | * A factory method for 26 | * 27 | * @return a instance of this class 28 | */ 29 | public static SpUtil getInstance() { 30 | if (null == mInstance) { 31 | synchronized (SpUtil.class) { 32 | if (null == mInstance) { 33 | mInstance = new SpUtil(); 34 | } 35 | } 36 | } 37 | return mInstance; 38 | } 39 | 40 | /** 41 | * initialization of context, use only first time, later it will use this again and again 42 | * 43 | * @param context app context: first time 44 | */ 45 | public void init(Context context) { 46 | if (mContext == null) { 47 | mContext = context; 48 | } 49 | if (mPref == null) { 50 | mPref = PreferenceManager.getDefaultSharedPreferences(mContext); 51 | } 52 | } 53 | 54 | public void putString(String key, String value) { 55 | Editor editor = mPref.edit(); 56 | editor.putString(key, value); 57 | editor.apply(); 58 | } 59 | 60 | public void putLong(String key, long value) { 61 | Editor editor = mPref.edit(); 62 | editor.putLong(key, value); 63 | editor.apply(); 64 | } 65 | 66 | public void putInt(String key, int value) { 67 | Editor editor = mPref.edit(); 68 | editor.putInt(key, value); 69 | editor.apply(); 70 | } 71 | 72 | public void putBoolean(String key, boolean value) { 73 | Editor editor = mPref.edit(); 74 | editor.putBoolean(key, value); 75 | editor.apply(); 76 | } 77 | 78 | 79 | public boolean getBoolean(String key) { 80 | return mPref.getBoolean(key, false); 81 | } 82 | 83 | public boolean getBoolean(String key, boolean def) { 84 | return mPref.getBoolean(key, def); 85 | } 86 | 87 | @Nullable 88 | public String getString(String key) { 89 | return mPref.getString(key, ""); 90 | } 91 | 92 | @Nullable 93 | public String getString(String key, String def) { 94 | return mPref.getString(key, def); 95 | } 96 | 97 | public Set getStringSet(String key, Set def) { 98 | return mPref.getStringSet(key, def); 99 | } 100 | 101 | public long getLong(String key) { 102 | return mPref.getLong(key, 0); 103 | } 104 | 105 | public long getLong(String key, int defInt) { 106 | return mPref.getLong(key, defInt); 107 | } 108 | 109 | public int getInt(String key) { 110 | return mPref.getInt(key, 0); 111 | } 112 | 113 | public int getInt(String key, int defInt) { 114 | return mPref.getInt(key, defInt); 115 | } 116 | 117 | public boolean contains(String key) { 118 | return mPref.contains(key); 119 | } 120 | 121 | 122 | public void remove(String key) { 123 | Editor editor = mPref.edit(); 124 | editor.remove(key); 125 | editor.apply(); 126 | } 127 | 128 | public void clear() { 129 | Editor editor = mPref.edit(); 130 | editor.clear(); 131 | editor.apply(); 132 | } 133 | 134 | 135 | } 136 | -------------------------------------------------------------------------------- /app/src/main/java/io/github/subhamtyagi/quickcalculation/utils/Utils.java: -------------------------------------------------------------------------------- 1 | package io.github.subhamtyagi.quickcalculation.utils; 2 | 3 | public class Utils { 4 | public static final String OPERATIONS = "operations"; 5 | public static final String TIME = "time"; 6 | public static final String LOWER_1 = "lower1"; 7 | public static final String LOWER_2 = "lower2"; 8 | public static final String UPPER_1 = "upper1"; 9 | public static final String UPPER_2 = "upper2"; 10 | 11 | public static final String SUM="sum"; 12 | public static final String SUBSTRACT="subtract"; 13 | public static final String MULTIPLICATION="multiplication"; 14 | public static final String DIVISION = "division"; 15 | public static final String SUM_SERIES = "sum_series"; 16 | public static final String SIMPLIFICATION = "simplification"; 17 | public static final String SIMPLIFICATION_ADVANCE="simplification2"; 18 | public static final String MIX ="mix"; 19 | 20 | /* public static int getTheme(Context context) { 21 | final String name = SpUtil.getInstance().getString(context.getString(R.string.pf_theme), "quick_calculation"); 22 | switch (name) { 23 | case "quick_calculation": 24 | return R.style.Theme_quick_calculation; 25 | case "purple": 26 | return R.style.Theme_purple; 27 | case "red": 28 | return R.style.Theme_red; 29 | case "dark_blue": 30 | return R.style.Theme_dark_blue; 31 | case "light_green": 32 | return R.style.Theme_light_green; 33 | case "dark": 34 | return R.style.Theme_dark; 35 | } 36 | return R.style.Theme_quick_calculation; 37 | }*/ 38 | 39 | } 40 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 9 | 15 | 18 | 21 | 22 | 23 | 24 | 30 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_launch.xml: -------------------------------------------------------------------------------- 1 | 2 | 6 | 7 | 22 | 23 | 37 | 38 | 54 | 55 | 69 | 70 | 87 | 88 | 101 | 102 | 118 | 119 | 135 | 136 | 155 | 156 | 168 | 169 | 185 | 186 | 202 | 203 | 220 | 221 | 235 | 236 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_quiz.xml: -------------------------------------------------------------------------------- 1 | 2 | 11 | 12 | 30 | 31 | 49 | 50 | 69 | 70 | 71 | 84 | 85 | 101 | 102 | 118 | 119 | 135 | 136 | 152 | 153 | 154 | 172 | 173 | 187 | 188 | 201 | 202 | 203 | 218 | 219 | 232 | 233 | 246 | 247 | 260 | 261 | 274 | 275 | 290 | 291 | 292 | 293 | 294 | -------------------------------------------------------------------------------- /app/src/main/res/layout/settings_activity.xml: -------------------------------------------------------------------------------- 1 | 4 | 5 | 9 | -------------------------------------------------------------------------------- /app/src/main/res/layout/time_dialog.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 8 | 9 | 21 | 22 |