경북대 Android_주수민 1주차 과제 제출합니다

README.md

@@ -1 +1,21 @@
 # android-contacts
+
+## Step1 기능목록
+- [x]  추가 버튼을 누르면 정보를 입력할 화면 표시
+- [x]  한 대상의 이름, 전화번호, 메일 등 여러가지 정보를 저장하는 객체에 정보를 저장
+- [x]  이름, 전화번호를 입력하지 않으면 토스트 메시지를 띄우고 저장하지 않음
+- [x]  전화번호 양식이 올바르지 않으면 토스트 메시지를 띄우고 저장하지 않음
+- [x]  이름, 전화번호, 메일 이외의 정보 입력은 더보기를 눌렀을 때 보임
+    - [x]  성별의 경우 여성, 남성 중 1가지를 선택할 수 있도록 구현
+- [x]  저장 버튼을 누르면 토스트 메시지를 띄우고 저장
+- [x]  취소 버튼을 누르면 토스트 메시지를 띄우고 저장하지 않음
+
+## Step2 기능목록
+- [x] 연락처 등록화면 구현
+  - [x] 추가버튼 구현
+  - [x] 입력한 연락처를 MainActivity로 전달
+  - [x] 저장한 연락처가 없으면 메시지 표시
+  - [x] 저장한 연락처가 있으면 모두 표시
+    - [x] 많을 경우 스크롤 가능하게 구현
+  - [x] 저장된 연락처를 선택하면 해당하는 정보 표시
+- [x] 정보를 저장하지 않으면 확인 창 표시

app/build.gradle.kts

@@ -41,6 +41,7 @@ dependencies {
     implementation("androidx.appcompat:appcompat:1.6.1")
     implementation("com.google.android.material:material:1.11.0")
     implementation("androidx.constraintlayout:constraintlayout:2.1.4")
+    implementation("androidx.activity:activity:1.8.0")
     testImplementation("junit:junit:4.13.2")
     androidTestImplementation("androidx.test.ext:junit:1.1.5")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")

app/src/main/AndroidManifest.xml

@@ -12,6 +12,13 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.Contacts"
         tools:targetApi="31">
+        <activity
+            android:name=".ContactInfoActivity"
+            android:exported="false" />
+        <activity
+            android:name=".ContactActivity"
+            android:exported="false"
+            android:windowSoftInputMode="adjustResize" />
         <activity
             android:name=".MainActivity"
             android:exported="true">
@@ -23,4 +30,4 @@
         </activity>
     </application>
 
-</manifest>
+</manifest>

app/src/main/java/campus/tech/kakao/contacts/Contact.kt

@@ -0,0 +1,17 @@
+package campus.tech.kakao.contacts
+
+import java.io.Serializable
+
+data class Contact (
+    var name: String,
+    var phoneNumber: String,
+    var mail: String,
+    var birth: String,
+    var sex: Int,
+    var memo: String) : Serializable {
+    val FEMALE: Int = R.id.female
+    val MALE: Int   = R.id.male
+    companion object CONST {
+        const val KEY: String = "CONTACT"
+    }
+}

app/src/main/java/campus/tech/kakao/contacts/ContactActivity.kt

@@ -0,0 +1,196 @@
+package campus.tech.kakao.contacts
+
+import android.app.DatePickerDialog
+import android.app.Dialog
+import android.content.Context
+import android.content.Intent
+import android.icu.util.Calendar
+import android.os.Bundle
+import android.text.Editable
+import android.text.TextWatcher
+import android.util.Log
+import android.widget.Button
+import android.widget.EditText
+import android.widget.RadioGroup
+import android.widget.TextView
+import android.widget.Toast
+import androidx.activity.OnBackPressedCallback
+import androidx.activity.OnBackPressedDispatcher
+import androidx.activity.enableEdgeToEdge
+import androidx.appcompat.app.AppCompatActivity
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+import androidx.core.view.isEmpty
+import androidx.core.widget.addTextChangedListener
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+
+class ContactActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_contact)
+
+        val cancelButton: Button = findViewById(R.id.cancel)
+        val saveButton: Button = findViewById(R.id.save)
+
+        val profile: TextView = findViewById(R.id.profile)
+        val name: EditText = findViewById(R.id.name)
+        val phoneNumber: EditText = findViewById(R.id.phone_number)
+        val mail: EditText = findViewById(R.id.mail)
+
+        val viewMore: ConstraintLayout = findViewById(R.id.view_more)
+        val moreInfos: ConstraintLayout = findViewById(R.id.more_infos)
+        val birth: TextView = findViewById(R.id.birthday)
+        val sex: RadioGroup = findViewById(R.id.sex_radio_group)
+        val memo: EditText = findViewById(R.id.memo)
+
+        registerBackPressedCallback(name, phoneNumber, mail, birth, sex, memo)
+
+        cancelButton.setOnClickListener {
+            cancelProcess()
+        }
+
+        saveButton.setOnClickListener {
+            saveProcess(name, phoneNumber, mail, birth, sex, memo)
+        }
+
+        name.addTextChangedListener(nameTextWatcher(profile))
+
+        viewMore.setOnClickListener {
+            extendInput(viewMore, moreInfos)
+        }
+
+        birth.setOnClickListener {
+            birthInput(birth)
+        }
+    }
+
+    fun registerBackPressedCallback(name: EditText, phoneNumber: EditText, mail: EditText,
+                                    birth: TextView, sex: RadioGroup, memo: EditText) {
+        val onBackPressedCallback = object : OnBackPressedCallback(true) {
+            override fun handleOnBackPressed() {
+                if (!isInfoEmpty(name, phoneNumber, mail, birth, sex, memo)) {
+                    buildAlertDialog(this@ContactActivity)
+                } else finish()
+            }
+        }
+        onBackPressedDispatcher.addCallback(this, onBackPressedCallback)
+    }
+
+    private fun isInfoEmpty(name: EditText, phoneNumber: EditText, mail: EditText,
+                            birth: TextView, sex: RadioGroup, memo: EditText): Boolean {
+        return name.text.isEmpty() &&
+                phoneNumber.text.isEmpty() &&
+                mail.text.isEmpty() &&
+                birth.text.isEmpty() &&
+                sex.checkedRadioButtonId == -1 &&
+                memo.text.isEmpty()
+    }
+
+    private fun buildAlertDialog(aContext: Context) {
+        MaterialAlertDialogBuilder(aContext)
+            .setMessage("작성 중인 내용이 있습니다. 정말 나가시겠습니까?")
+            .setNegativeButton("취소") { dialog, which ->
+            }
+            .setPositiveButton("확인") { dialog, which ->
+                finish()
+            }
+            .show()
+    }
+
+    fun cancelProcess() {
+        setResult(RESULT_CANCELED, Intent())
+        finish()
+    }
+
+    fun saveProcess(name: EditText, phoneNumber: EditText, mail: EditText,
+                    birth: TextView, sex: RadioGroup, memo: EditText) {
+        if (isValidInfo(name, phoneNumber)) {
+            val contact: Contact = saveInfo(name, phoneNumber, mail, birth, sex, memo)
+            val returnIntent: Intent = Intent(this, MainActivity::class.java)
+            returnIntent.putExtra(Contact.KEY, contact)
+            setResult(RESULT_OK, returnIntent)
+            finish()
+        }
+    }
+
+    fun isValidInfo(name: EditText, phoneNumber: EditText): Boolean {
+        return if (!isValidName(name)) {
+            false
+        } else if (!isValidNumber(phoneNumber)) {
+            false
+        } else true
+    }
+
+    private fun isValidName(name: EditText): Boolean {
+        return if (name.text.toString() == "") {
+            Toast.makeText(this, "이름은 반드시 입력해야 합니다", Toast.LENGTH_SHORT).show()
+            false
+        } else true
+    }
+
+    private fun isValidNumber(phoneNumber: EditText): Boolean {
+        val v : Regex = Regex("^[0-9]+$")
+        return if (v.matches(phoneNumber.text.toString())) {
+            true
+        } else if (phoneNumber.text.toString() == "") {
+            Toast.makeText(this, "전화번호는 반드시 입력해야 합니다", Toast.LENGTH_SHORT).show()
+            false
+        } else {
+            Toast.makeText(this, "전화번호는 숫자로만 구성되어야 합니다", Toast.LENGTH_SHORT).show()
+            false
+        }
+    }
+
+    private fun saveInfo(name: EditText, phoneNumber: EditText, mail: EditText,
+                 birth: TextView, sex: RadioGroup, memo: EditText): Contact {
+        val nameInfo: String = name.text.toString()
+        val phoneNumberInfo: String = phoneNumber.text.toString()
+        val mailInfo: String = mail.text.toString()
+        val birthInfo: String = birth.text.toString()
+        val sexInfo: Int = sex.checkedRadioButtonId
+        val memoInfo: String = memo.text.toString()
+
+        val contact: Contact = Contact(nameInfo, phoneNumberInfo,mailInfo, birthInfo, sexInfo, memoInfo)
+        return contact
+    }
+
+    fun nameTextWatcher(profile: TextView): TextWatcher {
+        return object: TextWatcher {
+            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
+            }
+
+            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
+            }
+
+            override fun afterTextChanged(s: Editable?) {
+                s?.let {
+                    updateProfile(profile, s.toString())
+                }
+            }
+        }
+    }
+
+    private fun updateProfile(profile: TextView, name: String) {
+        if (name.isEmpty())
+            profile.text = ""
+        else
+            profile.text = name[0].toString()
+    }
+
+    fun extendInput(viewMore: ConstraintLayout, moreInfos: ConstraintLayout) {
+        viewMore.visibility = ConstraintLayout.GONE
+        moreInfos.visibility = ConstraintLayout.VISIBLE
+    }
+
+    fun birthInput(birth: TextView) {
+        val calendar = Calendar.getInstance()
+        val cYear = calendar.get(Calendar.YEAR)
+        val cMonth = calendar.get(Calendar.MONTH)
+        val cDay = calendar.get(Calendar.DAY_OF_MONTH)
+
+        DatePickerDialog(this,
+            { _, year, month, dayOfMonth -> birth.text = "$year-%02d-%02d".format(month + 1, dayOfMonth) },
+            cYear, cMonth, cDay).show()
+    }
+}

app/src/main/java/campus/tech/kakao/contacts/ContactInfoActivity.kt

@@ -0,0 +1,50 @@
+package campus.tech.kakao.contacts
+
+import android.os.Build
+import android.os.Bundle
+import android.widget.TextView
+import androidx.activity.enableEdgeToEdge
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+
+class ContactInfoActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_contact_info)
+        val infoContact =
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU)
+                intent.extras?.getSerializable(Contact.KEY,Contact::class.java)
+            else
+                intent.extras?.getSerializable(Contact.KEY) as Contact?
+
+        if (infoContact is Contact) {
+            val infoProfile: TextView = findViewById(R.id.info_profile)
+            val infoName: TextView = findViewById(R.id.info_name)
+            val infoPhoneNumber: TextView = findViewById(R.id.info_phone_number)
+            val infoMail: TextView = findViewById(R.id.info_mail)
+            val infoBirth: TextView = findViewById(R.id.info_birth)
+            val infoSex: TextView = findViewById(R.id.info_sex)
+            val infoMemo: TextView = findViewById(R.id.info_memo)
+
+            matchInfo(infoProfile, infoName, infoPhoneNumber, infoMail, infoBirth, infoSex, infoMemo, infoContact)
+        }
+    }
+
+    private fun matchInfo(infoProfile: TextView, infoName: TextView, infoPhoneNumber: TextView, infoMail: TextView,
+                          infoBirth: TextView, infoSex: TextView, infoMemo: TextView, infoContact: Contact) {
+
+        infoProfile.text = infoContact.name[0].toString()
+        infoName.text = infoContact.name
+        infoPhoneNumber.text = infoContact.phoneNumber
+        infoMail.text = infoContact.mail
+        infoBirth.text = infoContact.birth
+        infoSex.text =
+            when (infoContact.sex) {
+                infoContact.FEMALE -> "여"
+                infoContact.MALE -> "남"
+                else -> ""
+            }
+        infoMemo.text = infoContact.memo
+    }
+}

app/src/main/java/campus/tech/kakao/contacts/ContactRecyclerAdapter.kt

@@ -0,0 +1,48 @@
+package campus.tech.kakao.contacts
+
+import android.content.Context
+import android.content.Intent
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.recyclerview.widget.RecyclerView
+
+class ContactRecyclerAdapter(
+    var contactList: MutableList<Contact>,
+    val inflater: LayoutInflater,
+    val mContext: Context
+) : RecyclerView.Adapter<ContactRecyclerAdapter.ContactViewHolder>() {
+    inner class ContactViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        val itemLayout: ConstraintLayout
+        val profile: TextView
+        val name: TextView
+        init {
+            itemLayout = itemView.findViewById(R.id.item_contact)
+            itemLayout.setOnClickListener { showContactInfo(mContext, adapterPosition) }
+            profile = itemView.findViewById(R.id.contact_item_profile)
+            name = itemView.findViewById(R.id.contact_item_name)
+        }
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ContactViewHolder {
+        val view = inflater.inflate(R.layout.item_contact, parent, false)
+        return ContactViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: ContactViewHolder, position: Int) {
+        holder.profile.text = contactList[position].name[0].toString()
+        holder.name.text = contactList[position].name
+    }
+
+    override fun getItemCount(): Int {
+        return contactList.size
+    }
+
+    private fun showContactInfo(mContext: Context, adapterPosition: Int) {
+        val contactIntent: Intent = Intent(mContext, ContactInfoActivity::class.java)
+        contactIntent.putExtra(Contact.KEY, contactList[adapterPosition])
+        mContext.startActivity(contactIntent)
+    }
+}