├── .gitignore ├── .idea ├── codeStyles │ ├── Project.xml │ └── codeStyleConfig.xml ├── gradle.xml ├── misc.xml └── runConfigurations.xml ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── nopalyer │ │ └── koltincalculator │ │ └── ExampleInstrumentedTest.kt │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── nopalyer │ │ │ └── koltincalculator │ │ │ └── MainActivity.kt │ └── res │ │ ├── drawable-v24 │ │ └── ic_launcher_foreground.xml │ │ ├── drawable │ │ ├── btn_equal_bg.xml │ │ └── ic_launcher_background.xml │ │ ├── layout │ │ └── activity_main.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 │ │ ├── colors.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── nopalyer │ └── koltincalculator │ └── ExampleUnitTest.kt ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/caches 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | /.idea/navEditor.xml 9 | /.idea/assetWizardSettings.xml 10 | .DS_Store 11 | /build 12 | /captures 13 | .externalNativeBuild 14 | .cxx 15 | -------------------------------------------------------------------------------- /.idea/codeStyles/Project.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 6 | 7 | 9 | 10 | 11 | 13 | 14 | 15 |
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-------------------------------------------------------------------------------- /.idea/codeStyles/codeStyleConfig.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 5 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 18 | 19 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 9 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | apply plugin: 'kotlin-android' 4 | 5 | apply plugin: 'kotlin-android-extensions' 6 | 7 | android { 8 | compileSdkVersion 29 9 | buildToolsVersion "29.0.3" 10 | defaultConfig { 11 | applicationId "com.nopalyer.koltincalculator" 12 | minSdkVersion 22 13 | targetSdkVersion 29 14 | versionCode 1 15 | versionName "1.0" 16 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 17 | } 18 | buildTypes { 19 | release { 20 | minifyEnabled false 21 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 22 | } 23 | } 24 | } 25 | 26 | dependencies { 27 | implementation fileTree(dir: 'libs', include: ['*.jar']) 28 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 29 | implementation 'androidx.appcompat:appcompat:1.1.0' 30 | implementation 'androidx.core:core-ktx:1.0.2' 31 | implementation 'androidx.constraintlayout:constraintlayout:1.1.3' 32 | testImplementation 'junit:junit:4.12' 33 | androidTestImplementation 'androidx.test.ext:junit:1.1.1' 34 | implementation 'net.objecthunter:exp4j:0.4.8' 35 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0' 36 | } 37 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/nopalyer/koltincalculator/ExampleInstrumentedTest.kt: -------------------------------------------------------------------------------- 1 | package com.nopalyer.koltincalculator 2 | 3 | import androidx.test.platform.app.InstrumentationRegistry 4 | import androidx.test.ext.junit.runners.AndroidJUnit4 5 | 6 | import org.junit.Test 7 | import org.junit.runner.RunWith 8 | 9 | import org.junit.Assert.* 10 | 11 | /** 12 | * Instrumented test, which will execute on an Android device. 13 | * 14 | * See [testing documentation](http://d.android.com/tools/testing). 15 | */ 16 | @RunWith(AndroidJUnit4::class) 17 | class ExampleInstrumentedTest { 18 | @Test 19 | fun useAppContext() { 20 | // Context of the app under test. 21 | val appContext = InstrumentationRegistry.getInstrumentation().targetContext 22 | assertEquals("com.nopalyer.koltincalculator", appContext.packageName) 23 | } 24 | } 25 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /app/src/main/java/com/nopalyer/koltincalculator/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package com.nopalyer.koltincalculator 2 | 3 | import androidx.appcompat.app.AppCompatActivity 4 | import android.os.Bundle 5 | import android.widget.Toast 6 | import kotlinx.android.synthetic.main.activity_main.* 7 | import net.objecthunter.exp4j.ExpressionBuilder 8 | 9 | class MainActivity : AppCompatActivity() { 10 | 11 | override fun onCreate(savedInstanceState: Bundle?) { 12 | super.onCreate(savedInstanceState) 13 | setContentView(R.layout.activity_main) 14 | 15 | //Number listeners 16 | btn00.setOnClickListener { appendOnClick(true, "00") } 17 | btn0.setOnClickListener { appendOnClick(true, "0") } 18 | btn1.setOnClickListener { appendOnClick(true, "1") } 19 | btn2.setOnClickListener { appendOnClick(true, "2") } 20 | btn3.setOnClickListener { appendOnClick(true, "3") } 21 | btn4.setOnClickListener { appendOnClick(true, "4") } 22 | btn5.setOnClickListener { appendOnClick(true, "5") } 23 | btn6.setOnClickListener { appendOnClick(true, "6") } 24 | btn7.setOnClickListener { appendOnClick(true, "7") } 25 | btn8.setOnClickListener { appendOnClick(true, "8") } 26 | btn9.setOnClickListener { appendOnClick(true, "9") } 27 | btnDot.setOnClickListener { appendOnClick(true, ".") } 28 | 29 | 30 | //Operator Listeners 31 | btnPlus.setOnClickListener { appendOnClick(false, "+") } 32 | btnMinus.setOnClickListener { appendOnClick(false, "-") } 33 | btnMultiply.setOnClickListener { appendOnClick(false, "*") } 34 | btnDivide.setOnClickListener { appendOnClick(false, "/") } 35 | btnLeftB.setOnClickListener { appendOnClick(false, "(") } 36 | btnRightB.setOnClickListener { appendOnClick(false, ")") } 37 | 38 | 39 | btnClear.setOnClickListener { 40 | clear() 41 | } 42 | 43 | btnEqual.setOnClickListener { 44 | calculate() 45 | } 46 | 47 | 48 | } 49 | 50 | //now create methods 51 | 52 | private fun appendOnClick(clear: Boolean, string: String) { 53 | 54 | if (clear) { 55 | tvOutput.text = "" 56 | tvInput.append(string) 57 | } else { 58 | tvInput.append(tvOutput.text) 59 | tvInput.append(string) 60 | tvOutput.text = "" 61 | } 62 | } 63 | 64 | private fun clear() { 65 | tvInput.text = "" 66 | tvOutput.text = "" 67 | 68 | } 69 | 70 | private fun calculate() { 71 | 72 | try { 73 | 74 | val input = ExpressionBuilder(tvInput.text.toString()).build() 75 | val output = input.evaluate() 76 | val longOutput = output.toLong() 77 | if (output == longOutput.toDouble()){ 78 | tvOutput.text = longOutput.toString() 79 | }else{ 80 | tvOutput.text = output.toString() 81 | } 82 | 83 | }catch (e:Exception){ 84 | Toast.makeText(this@MainActivity,e.message,Toast.LENGTH_LONG).show() 85 | } 86 | } 87 | } 88 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 12 | 13 | 19 | 22 | 25 | 26 | 27 | 28 | 34 | 35 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/btn_equal_bg.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 171 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 10 | 11 | 23 | 34 | 35 | 40 | 41 | 46 | 47 |