Git 협업하기

1. Git issue 생성 및 branch 접속

git fetch origin
git checkout feat/3-create-calendar

2. PR 받고 코드리뷰하기

코틀린으로 달력만들기

calendarview 활용하기

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

/**
 * @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
     */
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_calendar)

        // 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
        }
    }

    // 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" />

    <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>