commit ed9e58005641cb6ba088a25a5c1c96415abc97e3
Author: Jhansi <24260141+jtavva@users.noreply.github.com>
Date: Fri Apr 22 12:16:17 2022 -0700
Initial Commit
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3a2358d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,36 @@
+# built application files
+*.apk
+*.ap_
+
+# Mac files
+.DS_Store
+
+# files for the dex VM
+*.dex
+
+# Java class files
+*.class
+
+# generated files
+bin/
+gen/
+
+# Ignore gradle files
+.gradle/
+build/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Proguard folder generated by Eclipse
+proguard/
+proguard-project.txt
+
+# Eclipse files
+.project
+.classpath
+.settings/
+
+# Android Studio/IDEA
+*.iml
+.idea
\ No newline at end of file
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..3e0558e
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,36 @@
+# How to become a contributor and submit your own code
+
+## Contributor License Agreements
+
+We'd love to accept your sample apps and patches! Before we can take them, we
+have to jump a couple of legal hurdles.
+
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+(CLA).
+
+ * If you are an individual writing original source code and you're sure you
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+ (https://developers.google.com/open-source/cla/individual).
+ * If you work for a company that wants to allow you to contribute your work,
+ then you'll need to sign a [corporate CLA]
+ (https://developers.google.com/open-source/cla/corporate).
+
+Follow either of the two links above to access the appropriate CLA and
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+
+## Contributing A Patch
+
+1. Submit an issue describing your proposed change to the repo in question.
+1. The repo owner will respond to your issue promptly.
+1. If your proposed change is accepted, and you haven't already done so, sign a
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+1. Fork the desired repo, develop and test your code changes.
+1. Ensure that your code adheres to the existing style in the sample to which
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+ [Google Cloud Platform Samples Style Guide]
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+1. Ensure that your code has an appropriate set of unit tests which all pass.
+1. Submit a pull request.
+
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,202 @@
+
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diff --git a/README.md b/README.md
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index 0000000..8fadeb3
--- /dev/null
+++ b/README.md
@@ -0,0 +1,24 @@
+Tip Time - Solution Code
+=================================
+
+Solution code for the Android Basics in Compose: Tip Time app.
+
+
+Introduction
+------------
+The Tip Time app contains various UI elements for calculating a tip,
+teaching about user input, and State in Compose.
+
+
+Pre-requisites
+--------------
+* Experience with Kotlin syntax.
+* How to create and run a project in Android Studio.
+
+
+Getting Started
+---------------
+1. Install Android Studio, if you don't already have it.
+2. Download the sample.
+3. Import the sample into Android Studio.
+4. Build and run the sample.
diff --git a/app/.gitignore b/app/.gitignore
new file mode 100644
index 0000000..42afabf
--- /dev/null
+++ b/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
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--- /dev/null
+++ b/app/build.gradle
@@ -0,0 +1,63 @@
+plugins {
+ id 'com.android.application'
+ id 'org.jetbrains.kotlin.android'
+}
+
+android {
+ compileSdk 32
+
+ defaultConfig {
+ applicationId "com.example.tiptime"
+ minSdk 21
+ targetSdk 32
+ versionCode 1
+ versionName "1.0"
+
+ testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+ vectorDrawables {
+ useSupportLibrary true
+ }
+ }
+
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+ }
+ }
+ compileOptions {
+ sourceCompatibility JavaVersion.VERSION_1_8
+ targetCompatibility JavaVersion.VERSION_1_8
+ }
+ kotlinOptions {
+ jvmTarget = '1.8'
+ }
+ buildFeatures {
+ compose true
+ }
+ composeOptions {
+ kotlinCompilerExtensionVersion compose_version
+ }
+ packagingOptions {
+ resources {
+ excludes += '/META-INF/{AL2.0,LGPL2.1}'
+ }
+ }
+}
+
+dependencies {
+
+ implementation 'androidx.core:core-ktx:1.7.0'
+ implementation 'com.google.android.material:material:1.5.0'
+ implementation 'androidx.activity:activity-compose:1.4.0'
+ implementation "androidx.compose.ui:ui:$compose_version"
+ implementation "androidx.compose.material:material:$compose_version"
+ implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+ implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.4.1'
+ implementation 'androidx.activity:activity-compose:1.4.0'
+ testImplementation 'junit:junit:4.13.2'
+ androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+ androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+ androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+ debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+}
\ No newline at end of file
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
new file mode 100644
index 0000000..481bb43
--- /dev/null
+++ b/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..94f68a1
--- /dev/null
+++ b/app/src/main/AndroidManifest.xml
@@ -0,0 +1,25 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/app/src/main/java/com/example/tiptime/MainActivity.kt b/app/src/main/java/com/example/tiptime/MainActivity.kt
new file mode 100644
index 0000000..64af94b
--- /dev/null
+++ b/app/src/main/java/com/example/tiptime/MainActivity.kt
@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.tiptime
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.annotation.StringRes
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.wrapContentWidth
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material.Surface
+import androidx.compose.material.Switch
+import androidx.compose.material.SwitchDefaults
+import androidx.compose.material.Text
+import androidx.compose.material.TextField
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.focus.FocusDirection
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.example.tiptime.ui.theme.TipTimeTheme
+import java.text.NumberFormat
+
+class MainActivity : ComponentActivity() {
+ override fun onCreate(savedInstanceState: Bundle?) {
+ super.onCreate(savedInstanceState)
+ setContent {
+ TipTimeTheme {
+ Surface(modifier = Modifier.fillMaxSize()) {
+ TipTimeScreen()
+ }
+ }
+ }
+ }
+}
+
+@Composable
+fun TipTimeScreen() {
+ var amountInput by remember { mutableStateOf("") }
+ var tipInput by remember { mutableStateOf("") }
+ var roundUp by remember { mutableStateOf(false) }
+
+ val amount = amountInput.toDoubleOrNull() ?: 0.0
+ val tipPercent = tipInput.toDoubleOrNull() ?: 0.0
+ val tip = calculateTip(amount, tipPercent, roundUp)
+
+ val focusManager = LocalFocusManager.current
+
+ Column(
+ modifier = Modifier.padding(32.dp),
+ verticalArrangement = Arrangement.spacedBy(8.dp)
+ ) {
+ Text(
+ text = stringResource(R.string.calculate_tip),
+ fontSize = 24.sp,
+ modifier = Modifier.align(Alignment.CenterHorizontally)
+ )
+ Spacer(Modifier.height(16.dp))
+ EditNumberField(
+ label = R.string.cost_of_service,
+ keyboardOptions = KeyboardOptions.Default.copy(
+ keyboardType = KeyboardType.Number,
+ imeAction = ImeAction.Next
+ ),
+ keyboardActions = KeyboardActions(
+ onNext = { focusManager.moveFocus(FocusDirection.Down) }
+ ),
+ value = amountInput,
+ onValueChanged = { amountInput = it }
+ )
+ EditNumberField(
+ label = R.string.how_was_the_service,
+ keyboardOptions = KeyboardOptions.Default.copy(
+ keyboardType = KeyboardType.Number,
+ imeAction = ImeAction.Done
+ ),
+ keyboardActions = KeyboardActions(
+ onDone = { focusManager.clearFocus() }
+ ),
+ value = tipInput,
+ onValueChanged = { tipInput = it }
+ )
+ RoundTheTipRow(roundUp = roundUp, onRoundUpChanged = { roundUp = it })
+ Spacer(Modifier.height(24.dp))
+ Text(
+ text = stringResource(R.string.tip_amount, tip),
+ modifier = Modifier.align(Alignment.CenterHorizontally),
+ fontSize = 20.sp,
+ fontWeight = FontWeight.Bold
+ )
+ }
+}
+
+@Composable
+fun EditNumberField(
+ @StringRes label: Int,
+ keyboardOptions: KeyboardOptions,
+ keyboardActions: KeyboardActions,
+ value: String,
+ onValueChanged: (String) -> Unit,
+ modifier: Modifier = Modifier
+) {
+ TextField(
+ value = value,
+ singleLine = true,
+ modifier = modifier.fillMaxWidth(),
+ onValueChange = onValueChanged,
+ label = { Text(stringResource(label)) },
+ keyboardOptions = keyboardOptions,
+ keyboardActions = keyboardActions
+ )
+}
+
+@Composable
+fun RoundTheTipRow(
+ roundUp: Boolean,
+ onRoundUpChanged: (Boolean) -> Unit,
+ modifier: Modifier = Modifier
+) {
+ Row(
+ modifier = Modifier
+ .fillMaxWidth()
+ .size(48.dp),
+ verticalAlignment = Alignment.CenterVertically
+ ) {
+ Text(text = stringResource(R.string.round_up_tip))
+ Switch(
+ modifier = modifier
+ .fillMaxWidth()
+ .wrapContentWidth(Alignment.End),
+ checked = roundUp,
+ onCheckedChange = onRoundUpChanged,
+ colors = SwitchDefaults.colors(
+ uncheckedThumbColor = Color.DarkGray
+ )
+ )
+ }
+}
+
+/**
+ * Calculates the tip based on the user input and format the tip amount
+ * according to the local currency and display it onscreen.
+ * Example would be "$10.00".
+ */
+private fun calculateTip(amount: Double, tipPercent: Double = 15.0, roundUp: Boolean): String {
+ var tip = tipPercent / 100 * amount
+ if (roundUp)
+ tip = kotlin.math.ceil(tip)
+ return NumberFormat.getCurrencyInstance().format(tip)
+}
+
+@Preview
+@Composable
+fun TipTimeScreenPreview() {
+ TipTimeTheme {
+ TipTimeScreen()
+ }
+}
diff --git a/app/src/main/java/com/example/tiptime/ui/theme/Color.kt b/app/src/main/java/com/example/tiptime/ui/theme/Color.kt
new file mode 100644
index 0000000..1aadae9
--- /dev/null
+++ b/app/src/main/java/com/example/tiptime/ui/theme/Color.kt
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.tiptime.ui.theme
+
+import androidx.compose.ui.graphics.Color
+
+val Purple200 = Color(0xFFBB86FC)
+val Purple500 = Color(0xFF6200EE)
+val Purple700 = Color(0xFF3700B3)
+val Teal200 = Color(0xFF03DAC5)
diff --git a/app/src/main/java/com/example/tiptime/ui/theme/Shape.kt b/app/src/main/java/com/example/tiptime/ui/theme/Shape.kt
new file mode 100644
index 0000000..178be13
--- /dev/null
+++ b/app/src/main/java/com/example/tiptime/ui/theme/Shape.kt
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.tiptime.ui.theme
+
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.Shapes
+import androidx.compose.ui.unit.dp
+
+val Shapes = Shapes(
+ small = RoundedCornerShape(4.dp),
+ medium = RoundedCornerShape(4.dp),
+ large = RoundedCornerShape(0.dp)
+)
\ No newline at end of file
diff --git a/app/src/main/java/com/example/tiptime/ui/theme/Theme.kt b/app/src/main/java/com/example/tiptime/ui/theme/Theme.kt
new file mode 100644
index 0000000..1033e87
--- /dev/null
+++ b/app/src/main/java/com/example/tiptime/ui/theme/Theme.kt
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.tiptime.ui.theme
+
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.darkColors
+import androidx.compose.material.lightColors
+import androidx.compose.runtime.Composable
+
+private val DarkColorPalette = darkColors(
+ primary = Purple200,
+ primaryVariant = Purple700,
+ secondary = Teal200
+)
+
+private val LightColorPalette = lightColors(
+ primary = Purple500,
+ primaryVariant = Purple700,
+ secondary = Teal200
+)
+
+@Composable
+fun TipTimeTheme(darkTheme: Boolean = isSystemInDarkTheme(), content: @Composable () -> Unit) {
+ val colors = if (darkTheme) {
+ DarkColorPalette
+ } else {
+ LightColorPalette
+ }
+
+ MaterialTheme(
+ colors = colors,
+ typography = Typography,
+ shapes = Shapes,
+ content = content
+ )
+}
diff --git a/app/src/main/java/com/example/tiptime/ui/theme/Type.kt b/app/src/main/java/com/example/tiptime/ui/theme/Type.kt
new file mode 100644
index 0000000..263cef7
--- /dev/null
+++ b/app/src/main/java/com/example/tiptime/ui/theme/Type.kt
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.tiptime.ui.theme
+
+import androidx.compose.material.Typography
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.sp
+
+// Set of Material typography styles to start with
+val Typography = Typography(
+ body1 = TextStyle(
+ fontFamily = FontFamily.Default,
+ fontWeight = FontWeight.Normal,
+ fontSize = 16.sp
+ )
+)
\ No newline at end of file
diff --git a/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 0000000..793e74f
--- /dev/null
+++ b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,46 @@
+
+
+
+
+
+
+