[새싹] 현대IT&E 240122 2차 프로젝트 - Kotlin 화면 스위칭 구현

최정윤·2024년 1월 22일

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git fetch origin
git checkout chore/9-edit-calendar-1

화면 스위치 초안 작성

HomeActivity.kt

package kr.sesac.aoao.android

import android.annotation.SuppressLint
import java.io.FileInputStream
import java.io.FileOutputStream

import android.view.View
import android.os.Bundle
import android.widget.Button
import android.widget.CalendarView
import android.widget.EditText
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
import androidx.appcompat.widget.SwitchCompat

/**
 * @since 2024.01.19 ~
 * @author 김유빈, 최정윤
 */
class HomeActivity : AppCompatActivity(){

    var userID: String = "userID"
    lateinit var fname: String
    lateinit var str: String
    lateinit var calendarView: CalendarView
    lateinit var updateBtn: Button
    lateinit var deleteBtn:Button
    lateinit var saveBtn:Button
    lateinit var diaryTextView: TextView
    lateinit var diaryContent:TextView
    lateinit var title:TextView
    lateinit var contextEditText: EditText

    /**
     * 캘린더 구현, 화면 스위칭 구현
     * @since 2024.01.19 ~
     * @author 최정윤
     */
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_calendar)

        // 스위칭 객체 생성
        val statusText: TextView = findViewById(R.id.todo)
        val switchView: SwitchCompat = findViewById(R.id.diary)

        //switch 체크 이벤트
        switchView.setOnCheckedChangeListener { p0, isChecked ->
            if (isChecked) {
                statusText.text = "다이어리"
                showDiaryFunctionality()
            } else {
                statusText.text = "투두"
                showTodoFunctionality()
            }
        }

        // UI값 생성
        calendarView=findViewById(R.id.calendarView)
        diaryTextView=findViewById(R.id.diaryTextView)
        saveBtn=findViewById(R.id.saveBtn)
        deleteBtn=findViewById(R.id.deleteBtn)
        updateBtn=findViewById(R.id.updateBtn)
        diaryContent=findViewById(R.id.diaryContent)
        title=findViewById(R.id.title)
        contextEditText=findViewById(R.id.contextEditText)

        title.text = "달력 일기장"

        calendarView.setOnDateChangeListener { view, year, month, dayOfMonth ->
            diaryTextView.visibility = View.VISIBLE
            saveBtn.visibility = View.VISIBLE
            contextEditText.visibility = View.VISIBLE
            diaryContent.visibility = View.INVISIBLE
            updateBtn.visibility = View.INVISIBLE
            deleteBtn.visibility = View.INVISIBLE
            diaryTextView.text = String.format("%d / %d / %d", year, month + 1, dayOfMonth)
            contextEditText.setText("")
            checkDay(year, month, dayOfMonth, userID)
        }

        saveBtn.setOnClickListener {
            saveDiary(fname)
            contextEditText.visibility = View.INVISIBLE
            saveBtn.visibility = View.INVISIBLE
            updateBtn.visibility = View.VISIBLE
            deleteBtn.visibility = View.VISIBLE
            str = contextEditText.text.toString()
            diaryContent.text = str
            diaryContent.visibility = View.VISIBLE
        }
    }

//    스위칭 다이어리 보이게 하기
    private fun showDiaryFunctionality() {
        // 다이어리 관련 기능 보이게 설정
        diaryTextView.visibility = View.VISIBLE
        saveBtn.visibility = View.VISIBLE
        contextEditText.visibility = View.VISIBLE
        diaryContent.visibility = View.INVISIBLE
        updateBtn.visibility = View.INVISIBLE
        deleteBtn.visibility = View.INVISIBLE

        // 투두 관련 기능 숨기기
        // TODO: 투두 관련 기능에 대한 가시성 조절 코드 추가
    }

//    스위칭 투두 보이게 하기
    private fun showTodoFunctionality() {
        // 투두 관련 기능 보이게 설정
        // TODO: 투두 관련 기능에 대한 가시성 조절 코드 추가

        // 다이어리 관련 기능 숨기기
        diaryTextView.visibility = View.INVISIBLE
        saveBtn.visibility = View.INVISIBLE
        contextEditText.visibility = View.INVISIBLE
        diaryContent.visibility = View.INVISIBLE
        updateBtn.visibility = View.INVISIBLE
        deleteBtn.visibility = View.INVISIBLE
    }

    // 달력 내용 조회, 수정
    fun checkDay(cYear: Int, cMonth: Int, cDay: Int, userID: String) {
        //저장할 파일 이름설정
        fname = "" + userID + cYear + "-" + (cMonth + 1) + "" + "-" + cDay + ".txt"

        var fileInputStream: FileInputStream
        try {
            fileInputStream = openFileInput(fname)
            val fileData = ByteArray(fileInputStream.available())
            fileInputStream.read(fileData)
            fileInputStream.close()
            str = String(fileData)
            contextEditText.visibility = View.INVISIBLE
            diaryContent.visibility = View.VISIBLE
            diaryContent.text = str
            saveBtn.visibility = View.INVISIBLE
            updateBtn.visibility = View.VISIBLE
            deleteBtn.visibility = View.VISIBLE
            updateBtn.setOnClickListener {
                contextEditText.visibility = View.VISIBLE
                diaryContent.visibility = View.INVISIBLE
                contextEditText.setText(str)
                saveBtn.visibility = View.VISIBLE
                updateBtn.visibility = View.INVISIBLE
                deleteBtn.visibility = View.INVISIBLE
                diaryContent.text = contextEditText.text
            }
            deleteBtn.setOnClickListener {
                diaryContent.visibility = View.INVISIBLE
                updateBtn.visibility = View.INVISIBLE
                deleteBtn.visibility = View.INVISIBLE
                contextEditText.setText("")
                contextEditText.visibility = View.VISIBLE
                saveBtn.visibility = View.VISIBLE
                removeDiary(fname)
            }
            if (diaryContent.text == null) {
                diaryContent.visibility = View.INVISIBLE
                updateBtn.visibility = View.INVISIBLE
                deleteBtn.visibility = View.INVISIBLE
                diaryTextView.visibility = View.VISIBLE
                saveBtn.visibility = View.VISIBLE
                contextEditText.visibility = View.VISIBLE
            }
        } catch (e: Exception) {
            e.printStackTrace()
        }
    }


    // 달력 내용 제거
    @SuppressLint("WrongConstant")
    fun removeDiary(readDay: String?) {
        var fileOutputStream: FileOutputStream
        try {
            fileOutputStream = openFileOutput(readDay, MODE_NO_LOCALIZED_COLLATORS)
            val content = ""
            fileOutputStream.write(content.toByteArray())
            fileOutputStream.close()
        } catch (e: java.lang.Exception) {
            e.printStackTrace()
        }
    }


    // 달력 내용 추가
    @SuppressLint("WrongConstant")
    fun saveDiary(readDay: String?) {
        var fileOutputStream: FileOutputStream
        try {
            fileOutputStream = openFileOutput(readDay, MODE_NO_LOCALIZED_COLLATORS)
            val content = contextEditText.text.toString()
            fileOutputStream.write(content.toByteArray())
            fileOutputStream.close()
        } catch (e: java.lang.Exception) {
            e.printStackTrace()
        }
    }
}

activity_calendar.xml

<?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"
    android:orientation="vertical" >

    <CalendarView
        android:id="@+id/calendarView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="4dp"
        android:layout_marginEnd="8dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.488"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/title" />

    <!--  투두/다이어리 스위치  -->
    <LinearLayout 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:id="@+id/mainLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:context=".HomeActivity">

        <TextView
            android:id="@+id/todo"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_above="@+id/diary"
            android:layout_centerHorizontal="true"
            android:text="투두"
            android:textSize="30sp"
            android:textStyle="bold" />

        <androidx.appcompat.widget.SwitchCompat
            android:id="@+id/diary"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:layout_marginTop="20dp" />
    </LinearLayout>

    <TextView
        android:id="@+id/diaryTextView"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:gravity= "center"
        android:layout_marginTop="16dp"
        app:layout_constraintTop_toBottomOf="@+id/calendarView" app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginEnd="8dp" android:layout_marginRight="8dp"
        app:layout_constraintStart_toStartOf="parent" android:layout_marginLeft="8dp"
        android:layout_marginStart="8dp" android:textAppearance="@style/TextAppearance.AppCompat.Large"/>

    <EditText
        android:id="@+id/contextEditText"
        android:layout_width="0dp"
        android:layout_height="116dp"
        android:inputType="textMultiLine"
        android:ems="10"
        app:layout_constraintTop_toBottomOf="@+id/diaryTextView" android:layout_marginTop="16dp"
        android:hint="내용을 입력하세요." android:layout_marginEnd="8dp" app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginRight="8dp" android:layout_marginStart="8dp"
        app:layout_constraintStart_toStartOf="parent" android:layout_marginLeft="8dp"
        android:visibility="invisible"/>

    <TextView
        android:id="@+id/diaryContent"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginStart="8dp"
        android:layout_marginEnd="8dp"
        android:visibility="invisible"
        app:layout_constraintBottom_toBottomOf="@+id/contextEditText"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="@+id/contextEditText"
        app:layout_constraintTop_toTopOf="@+id/contextEditText"
        app:layout_constraintVertical_bias="0.0" />

    <TextView
        android:id="@+id/title"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:gravity="center"
        android:text="달력일기장"
        android:textAppearance="@style/TextAppearance.AppCompat.Large"
        android:textColor="#9E28B3"
        android:textSize="24sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:text="저장"
        android:layout_width="0dp"
        android:layout_marginBottom="20dp"
        android:layout_height="wrap_content"
        android:id="@+id/saveBtn"
        android:layout_marginTop="16dp"
        app:layout_constraintTop_toBottomOf="@+id/contextEditText"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        app:layout_constraintStart_toStartOf="parent"
        android:layout_marginLeft="8dp"
        android:layout_marginStart="8dp"
        android:visibility="invisible"/>

    <Button
        android:text="수정"
        android:layout_width="180dp"
        android:layout_height="wrap_content"
        android:id="@+id/updateBtn"
        app:layout_constraintBaseline_toBaselineOf="@+id/saveBtn"
        app:layout_constraintStart_toStartOf="parent"
        android:layout_marginLeft="8dp"
        android:layout_marginStart="8dp"
        app:layout_constraintEnd_toStartOf="@+id/deleteBtn"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:visibility="invisible"/>

    <Button
        android:text="삭제"
        android:layout_width="176dp"
        android:layout_height="wrap_content"
        android:id="@+id/deleteBtn"
        app:layout_constraintBaseline_toBaselineOf="@+id/updateBtn"
        app:layout_constraintEnd_toEndOf="@+id/saveBtn"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:visibility="invisible">
    </Button>
</androidx.constraintlayout.widget.ConstraintLayout>

구현현황

스위치 구현

이슈상황

날짜를 누르고 스위치 작동시키면 투두/다이어리 이동함
투두 스위칭 상태에서 날짜 변경하면 갑자기 다이어리 보임
- 날짜 선택 디폴트 상태가 다이어리라서 스위칭 이벤트 적용이 안되는 것 같다.

화면 스위치 구현 완료

activity_calendar.xml

<?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"
    android:orientation="vertical" >

    <CalendarView
        android:id="@+id/calendarView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="4dp"
        android:layout_marginEnd="8dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.488"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/title" />

    <!--  투두/다이어리 스위치  -->
    <LinearLayout 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:id="@+id/mainLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:context=".HomeActivity">

        <TextView
            android:id="@+id/todo"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_above="@+id/diary"
            android:layout_centerHorizontal="true"
            android:text="투두"
            android:textSize="30sp"
            android:textStyle="bold" />

        <androidx.appcompat.widget.SwitchCompat
            android:id="@+id/diary"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:layout_marginTop="20dp" />
    </LinearLayout>

    <TextView
        android:id="@+id/diaryTextView"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:gravity= "center"
        android:layout_marginTop="16dp"
        app:layout_constraintTop_toBottomOf="@+id/calendarView" app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginEnd="8dp" android:layout_marginRight="8dp"
        app:layout_constraintStart_toStartOf="parent" android:layout_marginLeft="8dp"
        android:layout_marginStart="8dp" android:textAppearance="@style/TextAppearance.AppCompat.Large"/>

    <EditText
        android:id="@+id/contextEditText"
        android:layout_width="0dp"
        android:layout_height="116dp"
        android:inputType="textMultiLine"
        android:ems="10"
        app:layout_constraintTop_toBottomOf="@+id/diaryTextView" android:layout_marginTop="16dp"
        android:hint="내용을 입력하세요." android:layout_marginEnd="8dp" app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginRight="8dp" android:layout_marginStart="8dp"
        app:layout_constraintStart_toStartOf="parent" android:layout_marginLeft="8dp"
        android:visibility="invisible"/>

    <TextView
        android:id="@+id/diaryContent"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginStart="8dp"
        android:layout_marginEnd="8dp"
        android:visibility="invisible"
        app:layout_constraintBottom_toBottomOf="@+id/contextEditText"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="@+id/contextEditText"
        app:layout_constraintTop_toTopOf="@+id/contextEditText"
        app:layout_constraintVertical_bias="0.0" />

    <TextView
        android:id="@+id/title"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:gravity="center"
        android:text="달력일기장"
        android:textAppearance="@style/TextAppearance.AppCompat.Large"
        android:textColor="#9E28B3"
        android:textSize="24sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:text="저장"
        android:layout_width="0dp"
        android:layout_marginBottom="20dp"
        android:layout_height="wrap_content"
        android:id="@+id/saveBtn"
        android:layout_marginTop="16dp"
        app:layout_constraintTop_toBottomOf="@+id/contextEditText"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        app:layout_constraintStart_toStartOf="parent"
        android:layout_marginLeft="8dp"
        android:layout_marginStart="8dp"
        android:visibility="invisible"/>

    <Button
        android:text="수정"
        android:layout_width="180dp"
        android:layout_height="wrap_content"
        android:id="@+id/updateBtn"
        app:layout_constraintBaseline_toBaselineOf="@+id/saveBtn"
        app:layout_constraintStart_toStartOf="parent"
        android:layout_marginLeft="8dp"
        android:layout_marginStart="8dp"
        app:layout_constraintEnd_toStartOf="@+id/deleteBtn"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:visibility="invisible"/>

    <Button
        android:text="삭제"
        android:layout_width="176dp"
        android:layout_height="wrap_content"
        android:id="@+id/deleteBtn"
        app:layout_constraintBaseline_toBaselineOf="@+id/updateBtn"
        app:layout_constraintEnd_toEndOf="@+id/saveBtn"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:visibility="invisible">
    </Button>
</androidx.constraintlayout.widget.ConstraintLayout>

HomeActivity.kt

package kr.sesac.aoao.android

import android.annotation.SuppressLint
import java.io.FileInputStream
import java.io.FileOutputStream

import android.view.View
import android.os.Bundle
import android.widget.Button
import android.widget.CalendarView
import android.widget.EditText
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
import androidx.appcompat.widget.SwitchCompat

/**
 * @since 2024.01.19 ~
 * @author 김유빈, 최정윤
 */
class HomeActivity : AppCompatActivity(){

    var userID: String = "userID"
    lateinit var fname: String
    lateinit var str: String
    lateinit var calendarView: CalendarView
    lateinit var updateBtn: Button
    lateinit var deleteBtn:Button
    lateinit var saveBtn:Button
    lateinit var diaryTextView: TextView
    lateinit var diaryContent:TextView
    lateinit var title:TextView
    lateinit var contextEditText: EditText

    /**
     * 캘린더 구현, 화면 스위칭 구현
     * @since 2024.01.19 ~
     * @author 최정윤
     */
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_calendar)

        // 스위칭 객체 생성
        val statusText: TextView = findViewById(R.id.todo)
        val switchView: SwitchCompat = findViewById(R.id.diary)

        //switch 체크 이벤트
        switchView.setOnCheckedChangeListener { p0, isChecked ->
            if (isChecked) {
                statusText.text = "다이어리"
                showDiaryFunctionality()
                isDiarySwitched = true
            } else {
                statusText.text = "투두"
                showTodoFunctionality()
                isDiarySwitched = false
            }

            // checkDay 함수 호출로 인해 화면 업데이트
//            checkDay(year, month, dayOfMonth, userID)
        }

        // UI값 생성
        calendarView=findViewById(R.id.calendarView)
        diaryTextView=findViewById(R.id.diaryTextView)
        saveBtn=findViewById(R.id.saveBtn)
        deleteBtn=findViewById(R.id.deleteBtn)
        updateBtn=findViewById(R.id.updateBtn)
        diaryContent=findViewById(R.id.diaryContent)
        title=findViewById(R.id.title)
        contextEditText=findViewById(R.id.contextEditText)

        title.text = "달력 일기장"

        calendarView.setOnDateChangeListener { view, year, month, dayOfMonth ->
            diaryTextView.visibility = View.VISIBLE
            saveBtn.visibility = View.VISIBLE
            contextEditText.visibility = View.VISIBLE
            diaryContent.visibility = View.INVISIBLE
            updateBtn.visibility = View.INVISIBLE
            deleteBtn.visibility = View.INVISIBLE
            diaryTextView.text = String.format("%d / %d / %d", year, month + 1, dayOfMonth)
            contextEditText.setText("")
            checkDay(year, month, dayOfMonth, userID)
        }

        saveBtn.setOnClickListener {
            saveDiary(fname)
            contextEditText.visibility = View.INVISIBLE
            saveBtn.visibility = View.INVISIBLE
            updateBtn.visibility = View.VISIBLE
            deleteBtn.visibility = View.VISIBLE
            str = contextEditText.text.toString()
            diaryContent.text = str
            diaryContent.visibility = View.VISIBLE
        }
    }

    // 스위칭 상태를 나타내는 변수 추가
    private var isDiarySwitched = false // 기본적으로 투두 상태로 시작

    // 달력 내용 조회, 수정
    fun checkDay(cYear: Int, cMonth: Int, cDay: Int, userID: String) {

        // 가시성 체크를 try-catch 블록 외부로 이동
        var diaryVisibility = View.INVISIBLE
        var todoVisibility = View.INVISIBLE

        if (isDiarySwitched) {
            // 다이어리 스위칭 상태일 때의 처리
            showDiaryFunctionality()
            diaryVisibility = View.VISIBLE
        } else {
            // 투두 스위칭 상태일 때의 처리
            showTodoFunctionality()
            todoVisibility = View.VISIBLE
        }

        //저장할 파일 이름설정
        fname = "" + userID + cYear + "-" + (cMonth + 1) + "" + "-" + cDay + ".txt"

        var fileInputStream: FileInputStream
        try {
            fileInputStream = openFileInput(fname)
            val fileData = ByteArray(fileInputStream.available())
            fileInputStream.read(fileData)
            fileInputStream.close()
            str = String(fileData)
            contextEditText.visibility = View.INVISIBLE
            diaryContent.visibility = diaryVisibility
            diaryContent.text = str
            saveBtn.visibility = View.INVISIBLE
            updateBtn.visibility = diaryVisibility
            deleteBtn.visibility = diaryVisibility
            updateBtn.setOnClickListener {
                contextEditText.visibility = View.VISIBLE
                diaryContent.visibility = View.INVISIBLE
                contextEditText.setText(str)
                saveBtn.visibility = View.VISIBLE
                updateBtn.visibility = View.INVISIBLE
                deleteBtn.visibility = View.INVISIBLE
                diaryContent.text = contextEditText.text
            }
            deleteBtn.setOnClickListener {
                diaryContent.visibility = View.INVISIBLE
                updateBtn.visibility = View.INVISIBLE
                deleteBtn.visibility = View.INVISIBLE
                contextEditText.setText("")
                contextEditText.visibility = View.VISIBLE
                saveBtn.visibility = View.VISIBLE
                removeDiary(fname)
            }
            if (diaryContent.text == null) {
                diaryContent.visibility = View.INVISIBLE
                updateBtn.visibility = View.INVISIBLE
                deleteBtn.visibility = View.INVISIBLE
                diaryTextView.visibility = View.VISIBLE
                saveBtn.visibility = View.VISIBLE
                contextEditText.visibility = View.VISIBLE
            }
        } catch (e: Exception) {
            e.printStackTrace()
        }
    }

    // 달력 내용 제거
    @SuppressLint("WrongConstant")
    fun removeDiary(readDay: String?) {
        var fileOutputStream: FileOutputStream
        try {
            fileOutputStream = openFileOutput(readDay, MODE_NO_LOCALIZED_COLLATORS)
            val content = ""
            fileOutputStream.write(content.toByteArray())
            fileOutputStream.close()
        } catch (e: java.lang.Exception) {
            e.printStackTrace()
        }
    }

    // 달력 내용 추가
    @SuppressLint("WrongConstant")
    fun saveDiary(readDay: String?) {
        var fileOutputStream: FileOutputStream
        try {
            fileOutputStream = openFileOutput(readDay, MODE_NO_LOCALIZED_COLLATORS)
            val content = contextEditText.text.toString()
            fileOutputStream.write(content.toByteArray())
            fileOutputStream.close()
        } catch (e: java.lang.Exception) {
            e.printStackTrace()
        }
    }

    //    스위칭 다이어리 보이게 하기
    private fun showDiaryFunctionality() {
        // 다이어리 관련 기능 보이게 설정
        diaryTextView.visibility = View.VISIBLE
        saveBtn.visibility = View.VISIBLE
        contextEditText.visibility = View.VISIBLE
        diaryContent.visibility = View.INVISIBLE
        updateBtn.visibility = View.INVISIBLE
        deleteBtn.visibility = View.INVISIBLE

        // 투두 관련 기능 숨기기
        // TODO: 투두 관련 기능에 대한 가시성 조절 코드 추가
    }

    //    스위칭 투두 보이게 하기
    private fun showTodoFunctionality() {
        // 투두 관련 기능 보이게 설정
        // TODO: 투두 관련 기능에 대한 가시성 조절 코드 추가

        // 다이어리 관련 기능 숨기기
        diaryTextView.visibility = View.INVISIBLE
        saveBtn.visibility = View.INVISIBLE
        contextEditText.visibility = View.INVISIBLE
        diaryContent.visibility = View.INVISIBLE
        updateBtn.visibility = View.INVISIBLE
        deleteBtn.visibility = View.INVISIBLE
    }
}

이슈 상황

초안에 대한 이슈 모두 해결

캘린더 디자인

activity_calendar.xml

<?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"
    android:orientation="vertical" >
    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:gravity="center_horizontal">
        <CalendarView
            android:id="@+id/calendarView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="parent"
            app:layout_constraintHorizontal_bias="0.488"
            android:background="#A4C66C"
            android:foreground="?android:attr/selectableItemBackground"
            android:outlineProvider="background"
            android:padding="0dp"
            android:dateTextAppearance="@style/CalendarDateText"
            android:gravity="center"
            /> <!--        app:layout_constraintTop_toBottomOf="@+id/title" -->
            <!--  투두/다이어리 스위치  -->
            <LinearLayout
                android:id="@+id/mainLayout"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="horizontal"
                android:gravity="center_vertical"
                android:paddingLeft="15dp"
                tools:context=".HomeActivity">

                <androidx.appcompat.widget.SwitchCompat
                    android:id="@+id/diary"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_centerInParent="true"
                    app:thumbTint="#FFFFFF"
                    app:trackTint="#A4C66C"/>

                <TextView
                    android:id="@+id/todo"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_above="@+id/diary"
                    android:layout_centerHorizontal="true"
                    android:text="투두"
                    android:textSize="20sp"
                    android:textStyle="bold" />


            </LinearLayout>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dp"
                android:layout_marginRight="10dp"
                android:orientation="vertical">
                <TextView
                    android:id="@+id/diaryTextView"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_marginStart="8dp"
                    android:layout_marginLeft="8dp"
                    android:layout_marginTop="16dp"
                    android:layout_marginEnd="8dp"
                    android:layout_marginRight="8dp"
                    android:gravity="left"
                    android:textAppearance="@style/TextAppearance.AppCompat.Small"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/calendarView" />

                <EditText
                    android:id="@+id/contextEditText"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:inputType="textMultiLine"
                    android:ems="10"
                    app:layout_constraintTop_toBottomOf="@+id/diaryTextView"
                    android:layout_marginTop="16dp"
                    android:hint="내용을 입력하세요."
                    android:layout_marginEnd="8dp"
                    app:layout_constraintEnd_toEndOf="parent"
                    android:layout_marginRight="8dp"
                    android:layout_marginStart="8dp"
                    app:layout_constraintStart_toStartOf="parent"
                    android:layout_marginLeft="8dp"
                    android:visibility="invisible"/>

                <TextView
                    android:id="@+id/diaryContent"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_marginStart="8dp"
                    android:layout_marginEnd="8dp"
                    android:visibility="invisible"
                    android:elevation="4dp"
                    app:layout_constraintBottom_toBottomOf="@+id/contextEditText"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintHorizontal_bias="0.0"
                    app:layout_constraintStart_toStartOf="@+id/contextEditText"
                    app:layout_constraintTop_toTopOf="@+id/contextEditText"
                    app:layout_constraintVertical_bias="0.0" />

            <!--    <TextView-->
            <!--        android:id="@+id/title"-->
            <!--        android:layout_width="0dp"-->
            <!--        android:layout_height="wrap_content"-->
            <!--        android:layout_marginStart="8dp"-->
            <!--        android:layout_marginTop="8dp"-->
            <!--        android:layout_marginEnd="8dp"-->
            <!--        android:gravity="center"-->
            <!--        android:text="달력일기장"-->
            <!--        android:textAppearance="@style/TextAppearance.AppCompat.Large"-->
            <!--        android:textColor="#9E28B3"-->
            <!--        android:textSize="24sp"-->
            <!--        android:textStyle="bold"-->
            <!--        app:layout_constraintEnd_toEndOf="parent"-->
            <!--        app:layout_constraintStart_toStartOf="parent"-->
            <!--        app:layout_constraintTop_toTopOf="parent" />-->
                <Button
                    android:text="저장"
                    android:layout_width="match_parent"
                    android:layout_marginBottom="20dp"
                    android:layout_height="wrap_content"
                    android:id="@+id/saveBtn"
                    android:layout_marginTop="16dp"
                    app:layout_constraintTop_toBottomOf="@+id/contextEditText"
                    app:layout_constraintEnd_toEndOf="parent"
                    android:layout_marginEnd="8dp"
                    android:layout_marginRight="8dp"
                    app:layout_constraintStart_toStartOf="parent"
                    android:layout_marginLeft="8dp"
                    android:layout_marginStart="8dp"
                    android:visibility="visible"
                    />
                <!--                    android:background="#A4C66C"-->
                <!--                    android:dateTextAppearance="@style/SaveBtn"-->
                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_marginBottom="20dp">
                    <Button
                        android:text="수정"
                        android:layout_width="180dp"
                        android:layout_height="wrap_content"
                        android:id="@+id/updateBtn"

                        app:layout_constraintStart_toStartOf="parent"
                        android:layout_marginLeft="8dp"
                        android:layout_marginStart="8dp"
                        app:layout_constraintEnd_toStartOf="@+id/deleteBtn"
                        android:layout_marginEnd="8dp"
                        android:layout_marginRight="8dp"
                        android:visibility="invisible"
                        android:background="#A4C66C"/>
        <!--                app:layout_constraintBaseline_toBaselineOf="@+id/saveBtn"-->

                    <Button
                        android:text="삭제"
                        android:layout_width="176dp"
                        android:layout_height="wrap_content"
                        android:id="@+id/deleteBtn"
                        app:layout_constraintBaseline_toBaselineOf="@+id/updateBtn"
                        android:layout_marginEnd="8dp"
                        android:layout_marginRight="8dp"
                        android:visibility="invisible"
                        android:background="#A4C66C"/>
        <!--                app:layout_constraintEnd_toEndOf="@+id/saveBtn"-->
                </LinearLayout>
            </LinearLayout>
        </LinearLayout>
    </ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>

styles.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
* @since 2024.01.22
* @author 김유빈, 최정윤
-->
<resources>
    <style name="CalendarDateText">
        <item name="android:textColor">#FFFFFF</item>
    </style>
    <style name="SaveBtn">
        <item name="android:background">#A4C66C</item>
    </style>
</resources>

HomeActivity.kt

package kr.sesac.aoao.android

import android.annotation.SuppressLint
import java.io.FileInputStream
import java.io.FileOutputStream

import android.view.View
import android.os.Bundle
import android.widget.Button
import android.widget.CalendarView
import android.widget.EditText
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
import androidx.appcompat.widget.SwitchCompat

/**
 * @since 2024.01.19 ~
 * @author 김유빈, 최정윤
 */
class HomeActivity : AppCompatActivity(){

    var userID: String = "userID"
    lateinit var fname: String
    lateinit var str: String
    lateinit var calendarView: CalendarView
    lateinit var updateBtn: Button
    lateinit var deleteBtn:Button
    lateinit var saveBtn:Button
    lateinit var diaryTextView: TextView
    lateinit var diaryContent:TextView
    lateinit var title:TextView
    lateinit var contextEditText: EditText

    /**
     * 캘린더 구현
     * @since 2024.01.19
     * @author 최정윤
     *
     * 화면 스위칭 구현
     * @since 2024.01.22
     * @author 최정윤
     *
     * 캘린더 디자인 변경
     * @since 2024.01.22
     * @author 최정윤
     */
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_calendar)

        // 스위칭 객체 생성
        val statusText: TextView = findViewById(R.id.todo)
        val switchView: SwitchCompat = findViewById(R.id.diary)

        //switch 체크 이벤트
        switchView.setOnCheckedChangeListener { p0, isChecked ->
            if (isChecked) {
                statusText.text = "다이어리"
                showDiaryFunctionality()
                isDiarySwitched = true
            } else {
                statusText.text = "투두"
                showTodoFunctionality()
                isDiarySwitched = false
            }

            // checkDay 함수 호출로 인해 화면 업데이트
//            checkDay(year, month, dayOfMonth, userID)
        }

        // UI값 생성
        calendarView=findViewById(R.id.calendarView)
        diaryTextView=findViewById(R.id.diaryTextView)
        saveBtn=findViewById(R.id.saveBtn)
        deleteBtn=findViewById(R.id.deleteBtn)
        updateBtn=findViewById(R.id.updateBtn)
        diaryContent=findViewById(R.id.diaryContent)
//        title=findViewById(R.id.title)
        contextEditText=findViewById(R.id.contextEditText)

//        title.text = "달력 일기장"

        calendarView.setOnDateChangeListener { view, year, month, dayOfMonth ->
            diaryTextView.visibility = View.VISIBLE
            saveBtn.visibility = View.VISIBLE
            contextEditText.visibility = View.VISIBLE
            diaryContent.visibility = View.INVISIBLE
            updateBtn.visibility = View.INVISIBLE
            deleteBtn.visibility = View.INVISIBLE
            diaryTextView.text = String.format("%d / %d / %d", year, month + 1, dayOfMonth)
            contextEditText.setText("")
            checkDay(year, month, dayOfMonth, userID)
        }

        saveBtn.setOnClickListener {
            saveDiary(fname)
            contextEditText.visibility = View.INVISIBLE
            saveBtn.visibility = View.INVISIBLE
            updateBtn.visibility = View.VISIBLE
            deleteBtn.visibility = View.VISIBLE
            str = contextEditText.text.toString()
            diaryContent.text = str
            diaryContent.visibility = View.VISIBLE
        }
    }

    // 스위칭 상태를 나타내는 변수 추가
    private var isDiarySwitched = false // 기본적으로 투두 상태로 시작

    // 달력 내용 조회, 수정
    fun checkDay(cYear: Int, cMonth: Int, cDay: Int, userID: String) {

        // 가시성 체크를 try-catch 블록 외부로 이동
        var diaryVisibility = View.INVISIBLE
        var todoVisibility = View.INVISIBLE

        if (isDiarySwitched) {
            // 다이어리 스위칭 상태일 때의 처리
            showDiaryFunctionality()
            diaryVisibility = View.VISIBLE
        } else {
            // 투두 스위칭 상태일 때의 처리
            showTodoFunctionality()
            todoVisibility = View.VISIBLE
        }

        //저장할 파일 이름설정
        fname = "" + userID + cYear + "-" + (cMonth + 1) + "" + "-" + cDay + ".txt"

        var fileInputStream: FileInputStream
        try {
            fileInputStream = openFileInput(fname)
            val fileData = ByteArray(fileInputStream.available())
            fileInputStream.read(fileData)
            fileInputStream.close()
            str = String(fileData)
            contextEditText.visibility = View.INVISIBLE
            diaryContent.visibility = diaryVisibility
            diaryContent.text = str
            saveBtn.visibility = View.INVISIBLE
            updateBtn.visibility = diaryVisibility
            deleteBtn.visibility = diaryVisibility
            updateBtn.setOnClickListener {
                contextEditText.visibility = View.VISIBLE
                diaryContent.visibility = View.INVISIBLE
                contextEditText.setText(str)
                saveBtn.visibility = View.VISIBLE
                updateBtn.visibility = View.INVISIBLE
                deleteBtn.visibility = View.INVISIBLE
                diaryContent.text = contextEditText.text
            }
            deleteBtn.setOnClickListener {
                diaryContent.visibility = View.INVISIBLE
                updateBtn.visibility = View.INVISIBLE
                deleteBtn.visibility = View.INVISIBLE
                contextEditText.setText("")
                contextEditText.visibility = View.VISIBLE
                saveBtn.visibility = View.VISIBLE
                removeDiary(fname)
            }
            if (diaryContent.text == null) {
                diaryContent.visibility = View.INVISIBLE
                updateBtn.visibility = View.INVISIBLE
                deleteBtn.visibility = View.INVISIBLE
                diaryTextView.visibility = View.VISIBLE
                saveBtn.visibility = View.VISIBLE
                contextEditText.visibility = View.VISIBLE
            }
        } catch (e: Exception) {
            e.printStackTrace()
        }
    }

    // 달력 내용 제거
    @SuppressLint("WrongConstant")
    fun removeDiary(readDay: String?) {
        var fileOutputStream: FileOutputStream
        try {
            fileOutputStream = openFileOutput(readDay, MODE_NO_LOCALIZED_COLLATORS)
            val content = ""
            fileOutputStream.write(content.toByteArray())
            fileOutputStream.close()
        } catch (e: java.lang.Exception) {
            e.printStackTrace()
        }
    }

    // 달력 내용 추가
    @SuppressLint("WrongConstant")
    fun saveDiary(readDay: String?) {
        var fileOutputStream: FileOutputStream
        try {
            fileOutputStream = openFileOutput(readDay, MODE_NO_LOCALIZED_COLLATORS)
            val content = contextEditText.text.toString()
            fileOutputStream.write(content.toByteArray())
            fileOutputStream.close()
        } catch (e: java.lang.Exception) {
            e.printStackTrace()
        }
    }

    //    스위칭 다이어리 보이게 하기
    private fun showDiaryFunctionality() {
        // 다이어리 관련 기능 보이게 설정
        diaryTextView.visibility = View.VISIBLE
        saveBtn.visibility = View.VISIBLE
        contextEditText.visibility = View.VISIBLE
        diaryContent.visibility = View.INVISIBLE
        updateBtn.visibility = View.INVISIBLE
        deleteBtn.visibility = View.INVISIBLE

        // 투두 관련 기능 숨기기
        // TODO: 투두 관련 기능에 대한 가시성 조절 코드 추가
    }

    //    스위칭 투두 보이게 하기
    private fun showTodoFunctionality() {
        // 투두 관련 기능 보이게 설정
        // TODO: 투두 관련 기능에 대한 가시성 조절 코드 추가

        // 다이어리 관련 기능 숨기기
        diaryTextView.visibility = View.INVISIBLE
        saveBtn.visibility = View.INVISIBLE
        contextEditText.visibility = View.INVISIBLE
        diaryContent.visibility = View.INVISIBLE
        updateBtn.visibility = View.INVISIBLE
        deleteBtn.visibility = View.INVISIBLE
    }

}