標準解答例

package ドメイン.bmicalc

import android.content.Intent

import androidx.appcompat.app.AppCompatActivity

import android.os.Bundle

import android.view.View

import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {

    companion object {

        const val EXTRA_HEIGHT = "height"

        const val EXTRA_WEIGHT = "weight"

    }

    private val btnCalcListener = View.OnClickListener {

        var isValid = true

        val textHeight = edtHeight.text.toString()

        val textWeight = edtWeight.text.toString()

        if (textHeight.isEmpty()) {

            edtHeight.error = getString(R.string.error_height)

            isValid = false

        }

        if (textWeight.isEmpty()) {

            edtWeight.error = getString(R.string.error_weight)

            isValid = false

        }

        if (isValid) {

            val height = textHeight.toFloat()

            val weight = textWeight.toFloat()

            val intent = Intent(this, ResultActivity::class.java).apply {

                putExtra(EXTRA_HEIGHT, height)

                putExtra(EXTRA_WEIGHT, weight)

            }

            startActivity(intent)

        }

    }

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        setContentView(R.layout.activity_main)

        btnCalc.setOnClickListener(btnCalcListener)

    }

}

package ドメイン.bmicalc

import androidx.appcompat.app.AppCompatActivity

import android.os.Bundle

import kotlinx.android.synthetic.main.activity_result.*

class ResultActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        setContentView(R.layout.activity_result)

        val height = intent.getFloatExtra(MainActivity.EXTRA_HEIGHT, 0.0f)

        val weight = intent.getFloatExtra(MainActivity.EXTRA_WEIGHT, 0.0f)

        txtInput.text = getString(R.string.input_label, height, weight)

        BMIRange.performBmiCalculation(height / 100, weight).run {

            val bmi = first

            val bmiStart = second.range.start

            val bmiEnd = second.range.endInclusive

            val score = getString(second.scoreResourcesId)

            val properWeight = third

            val weightDiff = weight - properWeight

            txtResultBmi.text = when (bmiEnd == Float.MAX_VALUE) {

                true -> getString(R.string.bmi_label_max, bmi, bmiStart, score)

                else -> getString(R.string.bmi_label, bmi, bmiStart, bmiEnd, score)

            }

            txtResultProper.text = getString(R.string.proper_label, properWeight, weightDiff)

        }

    }

}

package ドメイン.bmicalc

import kotlin.math.pow

@Suppress("unused")

enum class BMIRange(

    val range: ClosedFloatingPointRange<Float>,

    val scoreResourcesId: Int

) {

    TOO_SKINNY(0.00f..15.99f, R.string.too_skinny_label),

    THIN(16.00f..16.99f, R.string.thin_label),

    THINNESS(17.00f..18.49f, R.string.thinness_label),

    NORMAL_WEIGHT(18.50f..24.99f, R.string.normal_weight_label),

    PRE_OBESITY(25.00f..29.99f, R.string.pre_obesity_label),

    OBESITY_1(30.00f..34.99f, R.string.obesity1_label),

    OBESITY_2(35.00f..39.99f, R.string.obesity2_label),

    OBESITY_3(40.00f..Float.MAX_VALUE, R.string.obesity3_label);

    companion object {

        /**

         * BMI の計算を行う

         * @param height 身長（メートル）

         * @param weight 体重（キログラム）

         * @return Triple<Float, BMIRange, Float> first: bmi 値, second: BMIRange(Enum 型), third: 適正体重

         */

        fun performBmiCalculation(height: Float, weight: Float): Triple<Float, BMIRange, Float> {

            val bmi = weight / height.pow(2)

            val properWeight = height.pow(2) * 22

            val bmiRange = values().find { bmi in it.range } ?: OBESITY_3

            return Triple(bmi, bmiRange, properWeight)

        }

    }

}

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout 

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity">

    <EditText

        android:id="@+id/edtHeight"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="16dp"

        android:layout_marginEnd="48dp"

        android:layout_marginBottom="32dp"

        android:ems="10"

        android:hint="@string/height_hint"

        android:inputType="numberDecimal"

        app:layout_constraintBottom_toTopOf="@+id/edtWeight"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintStart_toEndOf="@+id/textView"

        android:importantForAutofill="no" />

    <TextView

        android:id="@+id/textView"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:text="@string/height_label"

        android:textAppearance="@style/TextAppearance.AppCompat.Large"

        app:layout_constraintBaseline_toBaselineOf="@+id/edtHeight"

        app:layout_constraintEnd_toEndOf="@+id/textView2"

        app:layout_constraintStart_toStartOf="@+id/textView2" />

    <TextView

        android:id="@+id/textView2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="48dp"

        android:text="@string/weight_label"

        android:textAppearance="@style/TextAppearance.AppCompat.Large"

        app:layout_constraintBaseline_toBaselineOf="@+id/edtWeight"

        app:layout_constraintStart_toStartOf="parent" />

    <EditText

        android:id="@+id/edtWeight"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="16dp"

        android:layout_marginEnd="48dp"

        android:layout_marginBottom="24dp"

        android:ems="10"

        android:hint="@string/weight_hint"

        android:inputType="numberDecimal"

        app:layout_constraintBottom_toTopOf="@+id/guideline"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintStart_toEndOf="@+id/textView2"

        android:importantForAutofill="no" />

    <androidx.constraintlayout.widget.Guideline

        android:id="@+id/guideline"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:orientation="horizontal"

        app:layout_constraintGuide_percent=".5" />

    <Button

        android:id="@+id/btnCalc"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="16dp"

        android:layout_marginEnd="48dp"

        android:text="@string/calculate_button"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintTop_toTopOf="@+id/guideline" />

</androidx.constraintlayout.widget.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout 

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity">

    <EditText

        android:id="@+id/edtHeight"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="24dp"

        android:layout_marginEnd="8dp"

        android:ems="10"

        android:hint="@string/height_hint"

        android:importantForAutofill="no"

        android:inputType="numberDecimal"

        app:layout_constraintEnd_toStartOf="@+id/btnCalc"

        app:layout_constraintStart_toStartOf="@+id/guideline"

        app:layout_constraintTop_toTopOf="parent" />

    <TextView

        android:id="@+id/textView"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:text="@string/height_label"

        android:textAppearance="@style/TextAppearance.AppCompat.Large"

        app:layout_constraintBaseline_toBaselineOf="@+id/edtHeight"

        app:layout_constraintEnd_toEndOf="@+id/textView2"

        app:layout_constraintStart_toStartOf="@+id/textView2" />

    <TextView

        android:id="@+id/textView2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginEnd="8dp"

        android:text="@string/weight_label"

        android:textAppearance="@style/TextAppearance.AppCompat.Large"

        app:layout_constraintBaseline_toBaselineOf="@+id/edtWeight"

        app:layout_constraintEnd_toStartOf="@+id/guideline" />

    <EditText

        android:id="@+id/edtWeight"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="32dp"

        android:layout_marginEnd="8dp"

        android:ems="10"

        android:hint="@string/weight_hint"

        android:importantForAutofill="no"

        android:inputType="numberDecimal"

        app:layout_constraintEnd_toStartOf="@+id/btnCalc"

        app:layout_constraintStart_toStartOf="@+id/guideline"

        app:layout_constraintTop_toBottomOf="@+id/edtHeight" />

    <Button

        android:id="@+id/btnCalc"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="16dp"

        android:layout_marginEnd="48dp"

        android:text="@string/calculate_button"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/edtWeight" />

    <androidx.constraintlayout.widget.Guideline

        android:id="@+id/guideline"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:orientation="vertical"

        app:layout_constraintGuide_percent=".3" />

</androidx.constraintlayout.widget.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout 

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".ResultActivity">

    <TextView

        android:id="@+id/txtInput"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginBottom="48dp"

        android:text="@string/input_label"

        android:textAppearance="@style/TextAppearance.AppCompat.Medium"

        app:layout_constraintBottom_toTopOf="@+id/txtResultBmi"

        app:layout_constraintStart_toStartOf="parent" />

    <androidx.constraintlayout.widget.Guideline

        android:id="@+id/guideline2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:orientation="horizontal"

        app:layout_constraintGuide_percent=".5" />

    <TextView

        android:id="@+id/txtResultBmi"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginEnd="8dp"

        android:layout_marginBottom="24dp"

        android:text="@string/bmi_label"

        android:textAppearance="@style/TextAppearance.AppCompat.Large"

        app:layout_constraintBottom_toTopOf="@+id/guideline2"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent" />

    <TextView

        android:id="@+id/txtResultProper"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="24dp"

        android:layout_marginEnd="8dp"

        android:text="@string/proper_label"

        android:textAppearance="@style/TextAppearance.AppCompat.Large"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toTopOf="@+id/guideline2" />

</androidx.constraintlayout.widget.ConstraintLayout>

<resources>

    <string name="app_name">BMI Calculator</string>

    <string name="input_label">%1.1fcm, %2.1fkg BMI is</string>

    <string name="bmi_label">%1.2f (%2.2f-%3.2f %4s)</string>

    <string name="proper_label">The proper weight is %1.1fkg (%+2.2fkg)</string>

    <string name="too_skinny_label">too skinny</string>

    <string name="thin_label">Thin</string>

    <string name="thinness_label">Thinness</string>

    <string name="normal_weight_label">Normal weight</string>

    <string name="pre_obesity_label">Pre-obesity</string>

    <string name="obesity1_label">Obesity (1 degree)</string>

    <string name="obesity2_label">Obesity (twice)</string>

    <string name="obesity3_label">Obesity (3 degree)</string>

    <string name="height_hint" translatable="false">cm</string>

    <string name="height_label">height</string>

    <string name="weight_label">weight</string>

    <string name="weight_hint" translatable="false">kg</string>

    <string name="calculate_button">Calculate</string>

    <string name="error_height">Please input HEIGHT.</string>

    <string name="error_weight">Please input WEIGHT.</string>

    <string name="bmi_label_max">%1.2f (over %2.2f %3s)</string>

</resources>

<?xml version="1.0" encoding="utf-8"?>

<resources>

    <string name="app_name">BMI 計算機</string>

    <string name="bmi_label">%1.2f (%2.2f-%3.2f %4s) です</string>

    <string name="input_label">%1.1fcm、%2.1fkg の BMI は</string>

    <string name="normal_weight_label">普通体重</string>

    <string name="obesity1_label">肥満 (1度)</string>

    <string name="obesity2_label">肥満 (2度)</string>

    <string name="obesity3_label">肥満 (3度)</string>

    <string name="pre_obesity_label">前肥満</string>

    <string name="proper_label">標準体重は  %1.1fkg (%+2.2fkg) です</string>

    <string name="thin_label">痩せ</string>

    <string name="too_skinny_label">痩せすぎ</string>

    <string name="thinness_label">痩せぎみ</string>

    <string name="calculate_button">計算する</string>

    <string name="height_label">身長</string>

    <string name="weight_label">体重</string>

    <string name="error_height">身長を入力してください</string>

    <string name="error_weight">体重を入力してください</string>

    <string name="bmi_label_max">%1.2f (%2.2f以上 %3s) です</string>

</resources>

package ドメイン.taskmanager

import android.app.Activity

import android.content.Intent

import androidx.appcompat.app.AppCompatActivity

import android.os.Bundle

import android.view.View

import kotlinx.android.synthetic.main.activity_add_task.*

class AddTaskActivity : AppCompatActivity() {

    private val okBtnClickListener = View.OnClickListener {

        if (inputCheck(this, txtTitle, txtDate, txtTime)) {

            setResult(Activity.RESULT_OK, Intent().apply { putExtra(EXTRA_TASK, generateTask()) })

            finish()

        }

    }

    private val cancelBtnClickListener = View.OnClickListener {

        setResult(Activity.RESULT_CANCELED)

        finish()

    }

    /**

     * タスクを生成する

     * @return task

     */

    private fun generateTask() = Task.newInstance(

        txtTitle.text.toString(),

        txtDate.text.toString(),

        txtTime.text.toString(),

        Priority.getPriority(priorityGroup.checkedRadioButtonId),

        txtDetail.text.toString()

    )

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        setContentView(R.layout.activity_add_task)

        setResult(Activity.RESULT_CANCELED)

        btnOK.setOnClickListener(okBtnClickListener)

        btnCancel.setOnClickListener(cancelBtnClickListener)

    }

}

@file:Suppress("unused")

package ドメイン.taskmanager

enum class Priority(

    val code: Int,

    val resourcesId: Int,

    val label: String

) {

    IMMEDIATELY(0, R.id.rdoImmediately, "!!!"),

    ASAP(1, R.id.rdoAsap, "!!"),

    SOON(2, R.id.rdoSoon, "!"),

    ANYTIME(3, R.id.rdoAnytime, " ");

    companion object {

        fun getPriority(resourcesId: Int) = values().find { resourcesId == it.resourcesId }?.code ?: ANYTIME.code

        fun getLabel(code: Int) = values().find { code == it.code }?.label ?: ANYTIME.label

        fun getResourcesId(code: Int) = values().find { code == it.code }?.resourcesId ?: ANYTIME.code

    }

}

@file:Suppress("NULLABILITY_MISMATCH_BASED_ON_JAVA_ANNOTATIONS")

package ドメイン.taskmanager

import java.io.Serializable

import java.text.SimpleDateFormat

import java.util.*

import java.util.UUID.randomUUID

data class Task(

    val title: String,

//    val date: String,

//    val time: String,

    val date: Date,

    val priority: Int,

    val detail: String

) : Serializable {

    val uuid = initUuid()

    companion object {

        private const val DATE_FORMAT = "MM/dd HH:mm"

        /**

         * Task インスタンスを生成するファクトリメソッド

         * @param title タイトル

         * @param date 日付

         * @param time 時間

         * @param priority 優先度

         * @param detail 詳細

         * @return Task インスタンス

         */

        fun newInstance(

            title: String,

            date: String,

            time: String,

            priority: Int,

            detail: String

        ) = Task(title, generateDate(date, time), priority, detail)

        /**

         * 文字列（日付, 時間）から Date 型の値を生成する

         * @param date 日付

         * @param time 時間

         * @return 現在年の Date

         */

        private fun generateDate(date: String, time: String): Date {

            val format = SimpleDateFormat(DATE_FORMAT, Locale.getDefault())

            return format.parse("$date $time")

        }

    }

    /**

     * Generate unique ID from UUID in positive space

     * Reference: https://gist.github.com/umbertogriffo/956f3dacc7fbeee0b65a264e8b003044

     * @return long value representing UUID

     */

    private fun initUuid(): Long {

        var value: Long

        do {

            value = randomUUID().mostSignificantBits and Long.MAX_VALUE

        } while (value < 0)

        return value

    }

}

package ドメイン.taskmanager

import android.app.Activity

import android.content.Intent

import androidx.appcompat.app.AppCompatActivity

import android.os.Bundle

import android.view.View

import kotlinx.android.synthetic.main.activity_task_detail.*

class TaskDetailActivity : AppCompatActivity() {

    private lateinit var beforeTask: Task

    private val deleteBtnClickListener = View.OnClickListener {

        setResult(Activity.RESULT_OK, Intent().apply { putExtra(EXTRA_TASK, beforeTask) })

        finish()

    }

    private val changeBtnClickListener = View.OnClickListener {

        if (inputCheck(this, txtTitle, txtDate, txtTime)) {

            setResult(Activity.RESULT_FIRST_USER, Intent().apply {

                putExtra(EXTRA_TASK, beforeTask)

                putExtra(EXTRA_CHANGE_TASK, generateTask())

            })

            finish()

        }

    }

    private val cancelBtnListener = View.OnClickListener {

        setResult(Activity.RESULT_CANCELED)

        finish()

    }

    /**

     * view の初期化を行う

     * @param task 詳細を表示するタスク

     */

    private fun initViews(task: Task) {

        txtTitle.setText(task.title)

//        txtDate.setText(task.date)

//        txtTime.setText(task.time)

        txtDate.setText(task.date.toDate())

        txtTime.setText(task.date.toTime())

        priorityGroup.check(Priority.getResourcesId(task.priority))

        txtDetail.setText(task.detail)

    }

    /**

     * タスクを生成する

     * @return task

     */

    private fun generateTask() = Task.newInstance(

        txtTitle.text.toString(),

        txtDate.text.toString(),

        txtTime.text.toString(),

        Priority.getPriority(priorityGroup.checkedRadioButtonId),

        txtDetail.text.toString()

    )

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        setContentView(R.layout.activity_task_detail)

        setResult(Activity.RESULT_CANCELED)

        beforeTask = intent.getSerializableExtra(EXTRA_TASK) as Task

        initViews(beforeTask)

        btnDelete.setOnClickListener(deleteBtnClickListener)

        btnChange.setOnClickListener(changeBtnClickListener)

        btnCancel.setOnClickListener(cancelBtnListener)

    }

}

package ドメイン.taskmanager

import android.content.Context

import android.view.LayoutInflater

import android.view.View

import android.view.ViewGroup

import android.widget.BaseAdapter

import android.widget.TextView

class TaskListAdapter(

    private val context: Context,

    private val tasks: List<Task>

) : BaseAdapter() {

    override fun getView(position: Int, convertView: View?, parent: ViewGroup?): View =

        (convertView ?: createView(parent)).apply {

            getItem(position).also { task -> (tag as ViewHolder).run { initViews(this, task) } }

        }

    override fun getItem(position: Int) = tasks[position]

    override fun getItemId(position: Int) = tasks[position].uuid

    override fun getCount() = tasks.size

    /**

     * listItem 内の view を初期化する

     * @param viewHolder item の id 情報が格納された viewHolder

     * @param task 初期化内容のタスク

     */

    private fun initViews(viewHolder: ViewHolder, task: Task) {

        viewHolder.run {

            title.text = task.title

//            date.text = task.date

//            time.text = task.time

            date.text = task.date.toDate()

            time.text = task.date.toTime()

            priority.text = Priority.getLabel(task.priority)

        }

    }

    private fun createView(parent: ViewGroup?) =

        LayoutInflater.from(context).inflate(R.layout.tasklist_item_row, parent, false).apply {

            tag = ViewHolder(this)

        }

    class ViewHolder(view: View) {

        val title: TextView = view.findViewById(R.id.txtTitle)

        val date: TextView = view.findViewById(R.id.txtDate)

        val time: TextView = view.findViewById(R.id.txtTime)

        val priority: TextView = view.findViewById(R.id.txtPriority)

    }

}

package ドメイン.taskmanager

import android.app.Activity

import android.content.Context

import android.content.Intent

import android.content.SharedPreferences

import androidx.appcompat.app.AppCompatActivity

import android.os.Bundle

import android.util.Log

import android.view.View

import android.widget.AdapterView

import com.google.gson.Gson

import kotlinx.android.synthetic.main.activity_main.*

class TaskManagerActivity : AppCompatActivity() {

    private lateinit var preferences: SharedPreferences

    private val addBtnClickListener = View.OnClickListener {

        startActivityForResult(Intent(this, AddTaskActivity::class.java), REQUEST_CODE_ADD)

    }

    private val taskItemClickListener = AdapterView.OnItemClickListener { parent, _, position, _ ->

            val task = (parent.adapter as TaskListAdapter).getItem(position)

            val intent = Intent(this, TaskDetailActivity::class.java).apply { putExtra(EXTRA_TASK, task) }

            startActivityForResult(intent, REQUEST_CODE_DETAIL)

        }

    private fun showTasks() {

        val tasks = preferences.getString(PREF_TASKS_KEY, null)

        if (tasks != null) taskListView.adapter = TaskListAdapter(this, tasks.fromJson().sort())

    }

    private fun List<Task>.sort() = this.sortedWith(compareBy({ it.date }, { it.priority }))

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        setContentView(R.layout.activity_main)

        preferences = getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE)

        btnAdd.setOnClickListener(addBtnClickListener)

        taskListView.onItemClickListener = taskItemClickListener

        showTasks()

    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {

        super.onActivityResult(requestCode, resultCode, data)

        if (resultCode != Activity.RESULT_CANCELED && data != null) {

            val task = data.getSerializableExtra(EXTRA_TASK) as Task

            val json = preferences.getString(PREF_TASKS_KEY, null)

            val tasks = json?.fromJson() ?: mutableListOf()

            when (requestCode) {

                REQUEST_CODE_ADD -> tasks.add(task)

                REQUEST_CODE_DETAIL -> {

                    tasks.remove(task)

                    if (resultCode == Activity.RESULT_FIRST_USER) {

                        tasks.add((data.getSerializableExtra(EXTRA_CHANGE_TASK) as Task))

                    }

                }

            }

            preferences.edit().putString(PREF_TASKS_KEY, tasks.toJson()).apply()

            showTasks()

        }

    }

}

package ドメイン.taskmanager

import android.content.Context

import android.widget.EditText

import com.google.gson.Gson

import com.google.gson.reflect.TypeToken

import java.text.ParseException

import java.text.SimpleDateFormat

import java.util.*

const val REQUEST_CODE_ADD = 1

const val REQUEST_CODE_DETAIL = 2

const val PREF_NAME = "taskList"

const val PREF_TASKS_KEY = "tasks"

const val EXTRA_TASK = "task"

const val EXTRA_CHANGE_TASK = "change_task"

private const val DATE_FORMAT = "MM/dd"

private const val TIME_FORMAT = "HH:mm"

/**

 * Date 型の値を文字列に変換する

 * @return 文字列の日付

 */

fun Date.toDate(): String = SimpleDateFormat(DATE_FORMAT, Locale.getDefault()).format(this)

/**

 * Date 型の値を文字列に変換する

 * @return 文字列の時間

 */

fun Date.toTime(): String = SimpleDateFormat(TIME_FORMAT, Locale.getDefault()).format(this)

/**

 * 入力値チェックとエラー表示処理を行う

 * @param context Context 情報

 * @param title タイトル入力用の EditText

 * @param date 日付入力用の EditText

 * @param time 時間入力用の EditText

 * @return 判定結果 true: エラーなし, false: エラーあり

 */

fun inputCheck(context: Context, title: EditText, date: EditText, time: EditText): Boolean {

    // title の判定

    val isNotEmpty = if (title.text.toString().isNotEmpty()) {

        true

    } else {

        title.error = context.getString(R.string.title_error)

        false

    }

    // date の判定

    val dateIsValid = try {

        SimpleDateFormat(DATE_FORMAT, Locale.getDefault()).parse(date.text.toString())

        true

    } catch (e: ParseException) {

        date.error = context.getString(R.string.date_error)

        false

    }

    // time の判定

    val timeIsValid = try {

        SimpleDateFormat(TIME_FORMAT, Locale.getDefault()).parse(time.text.toString())

        true

    } catch (e: ParseException) {

        time.error = context.getString(R.string.time_error)

        false

    }

    return isNotEmpty && dateIsValid && timeIsValid

}

/**

 * リスト内容を JSON に変換する

 * @return JSON(String)

 */

fun List<Task>.toJson(): String = Gson().toJson(this)

/**

 * JSON からリストインスタンスを生成する

 * @return タスクリスト(MutableList<Task>)

 */

fun String.fromJson(): MutableList<Task> = Gson().fromJson(this, object : TypeToken<MutableList<Task>>() {}.type)

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout 

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".TaskManagerActivity">

    <Button

        android:id="@+id/btnAdd"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="8dp"

        android:text="@string/add_button"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintTop_toTopOf="parent" />

    <ListView

        android:id="@+id/taskListView"

        android:layout_width="0dp"

        android:layout_height="0dp"

        android:layout_marginTop="8dp"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/btnAdd"

        tools:listitem="@layout/tasklist_item_row" />

</androidx.constraintlayout.widget.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".AddTaskActivity">

    <TextView

        android:id="@+id/textView"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:text="@string/priority_title"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/txtTime" />

    <EditText

        android:id="@+id/txtTitle"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="8dp"

        android:ems="10"

        android:hint="@string/title_hint"

        android:inputType="textPersonName"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toTopOf="parent"

        android:importantForAutofill="no" />

    <EditText

        android:id="@+id/txtDate"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="8dp"

        android:ems="10"

        android:hint="@string/date_hint"

        android:inputType="date"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/txtTitle"

        android:importantForAutofill="no" />

    <EditText

        android:id="@+id/txtTime"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="8dp"

        android:ems="10"

        android:hint="@string/time_hint"

        android:inputType="time"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/txtDate"

        android:importantForAutofill="no" />

    <RadioGroup

        android:id="@+id/priorityGroup"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginEnd="8dp"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/textView">

        <RadioButton

            android:id="@+id/rdoImmediately"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_immediately" />

        <RadioButton

            android:id="@+id/rdoAsap"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_asap" />

        <RadioButton

            android:id="@+id/rdoSoon"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_soon" />

        <RadioButton

            android:id="@+id/rdoAnytime"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_anytime"

            android:checked="true"/>

    </RadioGroup>

    <EditText

        android:id="@+id/txtDetail"

        android:layout_width="0dp"

        android:layout_height="0dp"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="8dp"

        android:layout_marginBottom="8dp"

        android:ems="10"

        android:gravity="start|top"

        android:hint="@string/task_detail_hint"

        android:importantForAutofill="no"

        android:inputType="textMultiLine"

        app:layout_constraintBottom_toTopOf="@+id/btnCancel"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/priorityGroup" />

    <Button

        android:id="@+id/btnCancel"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginEnd="4dp"

        android:layout_marginBottom="8dp"

        android:text="@android:string/cancel"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintEnd_toStartOf="@+id/btnOK"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent" />

    <Button

        android:id="@+id/btnOK"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="4dp"

        android:layout_marginEnd="8dp"

        android:text="@android:string/ok"

        app:layout_constraintBaseline_toBaselineOf="@+id/btnCancel"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toEndOf="@+id/btnCancel" />

</androidx.constraintlayout.widget.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".AddTaskActivity">

    <TextView

        android:id="@+id/textView"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:text="@string/priority_title"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/txtTime" />

    <EditText

        android:id="@+id/txtTitle"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="4dp"

        android:ems="10"

        android:hint="@string/title_hint"

        android:importantForAutofill="no"

        android:inputType="textPersonName"

        app:layout_constraintEnd_toStartOf="@+id/guideline"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toTopOf="parent" />

    <EditText

        android:id="@+id/txtDate"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="4dp"

        android:ems="10"

        android:hint="@string/date_hint"

        android:importantForAutofill="no"

        android:inputType="date"

        app:layout_constraintEnd_toStartOf="@+id/txtTime"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/txtTitle" />

    <EditText

        android:id="@+id/txtTime"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="4dp"

        android:layout_marginEnd="4dp"

        android:ems="10"

        android:hint="@string/time_hint"

        android:importantForAutofill="no"

        android:inputType="time"

        app:layout_constraintBaseline_toBaselineOf="@+id/txtDate"

        app:layout_constraintEnd_toStartOf="@+id/guideline"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toEndOf="@+id/txtDate" />

    <RadioGroup

        android:id="@+id/priorityGroup"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginEnd="4dp"

        app:layout_constraintEnd_toStartOf="@+id/guideline"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/textView">

        <RadioButton

            android:id="@+id/rdoImmediately"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_immediately" />

        <RadioButton

            android:id="@+id/rdoAsap"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_asap" />

        <RadioButton

            android:id="@+id/rdoSoon"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_soon" />

        <RadioButton

            android:id="@+id/rdoAnytime"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:checked="true"

            android:text="@string/priority_anytime" />

    </RadioGroup>

    <EditText

        android:id="@+id/txtDetail"

        android:layout_width="0dp"

        android:layout_height="0dp"

        android:layout_marginStart="4dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="8dp"

        android:layout_marginBottom="8dp"

        android:ems="10"

        android:gravity="start|top"

        android:hint="@string/task_detail_hint"

        android:importantForAutofill="no"

        android:inputType="textMultiLine"

        app:layout_constraintBottom_toTopOf="@+id/btnCancel"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="@+id/guideline"

        app:layout_constraintTop_toTopOf="parent" />

    <Button

        android:id="@+id/btnCancel"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginEnd="4dp"

        android:layout_marginBottom="8dp"

        android:text="@android:string/cancel"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintEnd_toStartOf="@+id/btnOK"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent" />

    <Button

        android:id="@+id/btnOK"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="4dp"

        android:layout_marginEnd="8dp"

        android:text="@android:string/ok"

        app:layout_constraintBaseline_toBaselineOf="@+id/btnCancel"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toEndOf="@+id/btnCancel" />

    <androidx.constraintlayout.widget.Guideline

        android:id="@+id/guideline"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:orientation="vertical"

        app:layout_constraintGuide_percent=".5" />

</androidx.constraintlayout.widget.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout 

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".TaskDetailActivity">

    <TextView

        android:id="@+id/textView"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:text="@string/priority_title"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/txtTime" />

    <EditText

        android:id="@+id/txtTitle"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="8dp"

        android:ems="10"

        android:hint="@string/title_hint"

        android:importantForAutofill="no"

        android:inputType="textPersonName"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toTopOf="parent" />

    <EditText

        android:id="@+id/txtDate"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="8dp"

        android:ems="10"

        android:hint="@string/date_hint"

        android:importantForAutofill="no"

        android:inputType="date"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/txtTitle" />

    <EditText

        android:id="@+id/txtTime"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="8dp"

        android:ems="10"

        android:hint="@string/time_hint"

        android:importantForAutofill="no"

        android:inputType="time"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/txtDate" />

    <RadioGroup

        android:id="@+id/priorityGroup"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginEnd="8dp"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/textView">

        <RadioButton

            android:id="@+id/rdoImmediately"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_immediately" />

        <RadioButton

            android:id="@+id/rdoAsap"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_asap" />

        <RadioButton

            android:id="@+id/rdoSoon"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_soon" />

        <RadioButton

            android:id="@+id/rdoAnytime"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:checked="true"

            android:text="@string/priority_anytime" />

    </RadioGroup>

    <EditText

        android:id="@+id/txtDetail"

        android:layout_width="0dp"

        android:layout_height="0dp"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="8dp"

        android:layout_marginBottom="8dp"

        android:ems="10"

        android:gravity="start|top"

        android:hint="@string/task_detail_hint"

        android:importantForAutofill="no"

        android:inputType="textMultiLine"

        app:layout_constraintBottom_toTopOf="@+id/btnCancel"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/priorityGroup" />

    <Button

        android:id="@+id/btnCancel"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginEnd="4dp"

        android:layout_marginBottom="8dp"

        android:text="@android:string/cancel"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintEnd_toStartOf="@+id/btnChange"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent" />

    <Button

        android:id="@+id/btnDelete"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="4dp"

        android:layout_marginEnd="8dp"

        android:text="@string/delete_btn"

        app:layout_constraintBaseline_toBaselineOf="@+id/btnCancel"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toEndOf="@+id/btnChange" />

    <Button

        android:id="@+id/btnChange"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="4dp"

        android:layout_marginEnd="4dp"

        android:text="@string/change_btn"

        app:layout_constraintBaseline_toBaselineOf="@+id/btnCancel"

        app:layout_constraintEnd_toStartOf="@+id/btnDelete"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toEndOf="@+id/btnCancel" />

</androidx.constraintlayout.widget.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout 

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".TaskDetailActivity">

    <TextView

        android:id="@+id/textView"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:text="@string/priority_title"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/txtTime" />

    <EditText

        android:id="@+id/txtTitle"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="4dp"

        android:ems="10"

        android:hint="@string/title_hint"

        android:importantForAutofill="no"

        android:inputType="textPersonName"

        app:layout_constraintEnd_toStartOf="@+id/guideline2"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toTopOf="parent" />

    <EditText

        android:id="@+id/txtDate"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="4dp"

        android:ems="10"

        android:hint="@string/date_hint"

        android:importantForAutofill="no"

        android:inputType="date"

        app:layout_constraintEnd_toStartOf="@+id/txtTime"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/txtTitle" />

    <EditText

        android:id="@+id/txtTime"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="4dp"

        android:layout_marginEnd="4dp"

        android:ems="10"

        android:hint="@string/time_hint"

        android:importantForAutofill="no"

        android:inputType="time"

        app:layout_constraintBaseline_toBaselineOf="@+id/txtDate"

        app:layout_constraintEnd_toStartOf="@+id/guideline2"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toEndOf="@+id/txtDate" />

    <RadioGroup

        android:id="@+id/priorityGroup"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginEnd="4dp"

        app:layout_constraintEnd_toStartOf="@+id/guideline2"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/textView">

        <RadioButton

            android:id="@+id/rdoImmediately"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_immediately" />

        <RadioButton

            android:id="@+id/rdoAsap"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_asap" />

        <RadioButton

            android:id="@+id/rdoSoon"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="@string/priority_soon" />

        <RadioButton

            android:id="@+id/rdoAnytime"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:checked="true"

            android:text="@string/priority_anytime" />

    </RadioGroup>

    <EditText

        android:id="@+id/txtDetail"

        android:layout_width="0dp"

        android:layout_height="0dp"

        android:layout_marginStart="4dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="8dp"

        android:layout_marginBottom="8dp"

        android:ems="10"

        android:gravity="start|top"

        android:hint="@string/task_detail_hint"

        android:importantForAutofill="no"

        android:inputType="textMultiLine"

        app:layout_constraintBottom_toTopOf="@+id/btnCancel"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="@+id/guideline2"

        app:layout_constraintTop_toTopOf="parent" />

    <Button

        android:id="@+id/btnCancel"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginEnd="4dp"

        android:layout_marginBottom="8dp"

        android:text="@android:string/cancel"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintEnd_toStartOf="@+id/btnChange"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toStartOf="parent" />

    <Button

        android:id="@+id/btnDelete"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginStart="4dp"

        android:layout_marginEnd="8dp"

        android:text="@string/delete_btn"

        app:layout_constraintBaseline_toBaselineOf="@+id/btnCancel"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toEndOf="@+id/btnChange" />

    <Button

        android:id="@+id/btnChange"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="4dp"

        android:layout_marginEnd="4dp"

        android:text="@string/change_btn"

        app:layout_constraintBaseline_toBaselineOf="@+id/btnCancel"

        app:layout_constraintEnd_toStartOf="@+id/btnDelete"

        app:layout_constraintHorizontal_bias="0.5"

        app:layout_constraintStart_toEndOf="@+id/btnCancel" />

    <androidx.constraintlayout.widget.Guideline

        android:id="@+id/guideline2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:orientation="vertical"

        app:layout_constraintGuide_percent=".5" />

</androidx.constraintlayout.widget.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="wrap_content">

    <TextView

        android:id="@+id/txtDate"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="8dp"

        app:layout_constraintBottom_toTopOf="@+id/txtTime"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintTop_toTopOf="parent"

        tools:text="2020/12/31" />

    <TextView

        android:id="@+id/txtTime"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginEnd="8dp"

        android:layout_marginBottom="8dp"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/txtDate"

        tools:text="23:59" />

    <TextView

        android:id="@+id/txtPriority"

        android:layout_width="36dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:textSize="36sp"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toTopOf="parent"

        tools:text="!!!" />

    <TextView

        android:id="@+id/txtTitle"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:textSize="36sp"

        app:layout_constraintBaseline_toBaselineOf="@+id/txtPriority"

        app:layout_constraintEnd_toStartOf="@+id/txtDate"

        app:layout_constraintStart_toEndOf="@+id/txtPriority"

        tools:text="Title" />

</androidx.constraintlayout.widget.ConstraintLayout>

<resources>

    <string name="app_name" translatable="false">TaskManager</string>

    <string name="add_button" translatable="false">+</string>

    <string name="priority_title">Priority</string>

    <string name="title_hint">title</string>

    <string name="date_hint">date</string>

    <string name="time_hint">time</string>

    <string name="priority_immediately">Immediately</string>

    <string name="priority_asap">ASAP (as soon as possible)</string>

    <string name="priority_soon">Soon</string>

    <string name="priority_anytime">Anytime</string>

    <string name="task_detail_hint">task detail</string>

    <string name="change_btn">change</string>

    <string name="delete_btn">delete</string>

    <string name="title_error">Please enter title correctly</string>

    <string name="date_error">Please enter date correctly</string>

    <string name="time_error">Please enter time correctly</string>

</resources>

<?xml version="1.0" encoding="utf-8"?>

<resources>

    <string name="priority_title">優先度</string>

    <string name="title_hint">タイトル</string>

    <string name="date_hint">日付</string>

    <string name="time_hint">時間</string>

    <string name="priority_anytime">普通</string>

    <string name="priority_soon">すぐに</string>

    <string name="priority_asap">可及的速やかに</string>

    <string name="priority_immediately">緊急！</string>

    <string name="task_detail_hint">詳細</string>

    <string name="change_btn">変更</string>

    <string name="delete_btn">削除</string>

    <string name="date_error">日付を正しく入力してください</string>

    <string name="time_error">時間を正しく入力してください</string>

    <string name="title_error">タイトルを正しく入力してください</string>

</resources>