부산대 Android_김현민 2주차 과제 수정

README.md

@@ -1,17 +1,28 @@
 # 맵 위치 검색 안드로이드 앱
 - 카테캠 Step2 Week2
-- 연락처 추가 및 연락처 조회가 가능한 연락처 목록을 통해 연락처를 관리하는 안드로이드 앱
+- 장소 검색 및 장소 저장이 가능한 안드로이드 앱
 
 ## 기능
 **1. 검색 화면**
 - 검색어 입력 칸 + 검색어 전체 삭제 버튼
-- 검색 결과 표시 레이아웃
+- 검색어 x눌러 삭제 가능
 
 **2. 로컬 데이터베이스 생성**
 
+**3. 검색 결과 목록**
+- RecyclerView 사용
+- 선택하면 검색어 저장 목록에 추가됨
+  - 검색창과 검색결과 목록 사이
+
+**4. 검색어 저장 목록**
+- 가로 스크롤
+- x눌러서 삭제 가능
+- 앱을 재실행하여도 유지
+- 이미 저장된 목록 선택 시 가장 오른쪽에 위치
+
 ## 실행
 - MainActivity.kt 에서 시작
 
 ## 환경
 - Kotlin
-- Android Studio
+- Android Studio

app/build.gradle.kts

@@ -47,6 +47,7 @@ dependencies {
     implementation("androidx.constraintlayout:constraintlayout:2.1.4")
     implementation("androidx.recyclerview:recyclerview:1.3.2")
     implementation("androidx.datastore:datastore-preferences:1.0.0")
+    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/java/campus/tech/kakao/map/Adapter.kt

@@ -0,0 +1,55 @@
+package campus.tech.kakao.map
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+
+class Adapter(private var profiles: List<Profile>) : RecyclerView.Adapter<Adapter.ProfileViewHolder>() {
+
+    interface OnItemClickListener {
+        fun onItemClick(name: String)
+    }
+
+    var listener: OnItemClickListener? = null
+    fun setOnItemClickListener(listener: OnItemClickListener) {
+        this.listener = listener
+    }
+
+    inner class ProfileViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        val tvName: TextView = itemView.findViewById(R.id.tvName)
+        val tvAddress: TextView = itemView.findViewById(R.id.tvAddress)
+        val tvType: TextView = itemView.findViewById(R.id.tvType)
+
+        init {
+            itemView.setOnClickListener {
+                bindingAdapterPosition.takeIf { it != RecyclerView.NO_POSITION }?.let { position ->
+                    listener?.onItemClick(profiles[position].name)
+                }
+            }
+        }
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ProfileViewHolder {
+        val view = LayoutInflater.from(parent.context).inflate(R.layout.activity_item_view, parent, false)
+        return ProfileViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: ProfileViewHolder, position: Int) {
+        val profile = profiles[position]
+        holder.tvName.text = profile.name
+        holder.tvAddress.text = profile.address
+        holder.tvType.text = profile.type
+    }
+
+    override fun getItemCount(): Int {
+        return profiles.size
+    }
+
+    fun updateProfiles(newProfiles: List<Profile>) {
+        profiles = newProfiles
+        notifyDataSetChanged()
+    }
+}
+

app/src/main/java/campus/tech/kakao/map/DBHelper.kt

@@ -1,61 +1,76 @@
 package campus.tech.kakao.map
 
-import android.content.ContentValues
 import android.content.Context
 import android.database.Cursor
 import android.database.sqlite.SQLiteDatabase
 import android.database.sqlite.SQLiteOpenHelper
-import android.os.Parcel
-import android.os.Parcelable
 
 private const val TABLE_PLACE = "places"
-private const val COLUMN_TYPE = "type"  //
+private const val COLUMN_TYPE = "type"
 private const val COLUMN_NAME = "name"
 private const val COLUMN_ADDRESS = "address"
 
-class DBHelper(context: Context): SQLiteOpenHelper(context, "place.db", null, 1) {
+class DBHelper(context: Context) : SQLiteOpenHelper(context, "place.db", null, 1) {
     override fun onCreate(db: SQLiteDatabase?) {
         db?.execSQL(
             "CREATE TABLE $TABLE_PLACE (" +
-                    "$COLUMN_TYPE  varchar(30) NOT NULL," +
-                    "$COLUMN_NAME  varchar(30) NOT NULL," +
-                    "$COLUMN_ADDRESS  varchar(30) NOT NULL" +
+                    "$COLUMN_TYPE VARCHAR(30) NOT NULL," +
+                    "$COLUMN_NAME VARCHAR(30) NOT NULL," +
+                    "$COLUMN_ADDRESS VARCHAR(30) NOT NULL" +
                     ");"
         )
 
-        insertPharData()
-        insertCafeData()
+        insertPharData(db)
+        insertCafeData(db)
     }
 
     override fun onUpgrade(db: SQLiteDatabase?, oldVersion: Int, newVersion: Int) {
         db?.execSQL("DROP TABLE IF EXISTS $TABLE_PLACE")
         onCreate(db)
     }
 
-    fun insertPharData() {
-        val db = this.writableDatabase
+    private fun insertPharData(db: SQLiteDatabase?) {
         val type = "약국"
         val name = "약국"
         val address = "서울 강남구 대치동"
 
         for (i in 1..30) {
-            val name = "$name$i"
-            val address = "$address $i"
-            db.execSQL("INSERT INTO $TABLE_PLACE ($COLUMN_TYPE, $COLUMN_NAME, $COLUMN_ADDRESS) VALUES ('$type', '$name', '$address');")
+            val nameWithIndex = "$name$i"
+            val addressWithIndex = "$address $i"
+            db?.execSQL("INSERT INTO $TABLE_PLACE ($COLUMN_TYPE, $COLUMN_NAME, $COLUMN_ADDRESS) VALUES ('$type', '$nameWithIndex', '$addressWithIndex');")
         }
     }
 
-    fun insertCafeData() {
-        val db = this.writableDatabase
+    private fun insertCafeData(db: SQLiteDatabase?) {
         val type = "카페"
         val name = "카페"
         val address = "서울 성동구 성수동"
 
         for (i in 1..30) {
-            val name = "$name$i"
-            val address = "$address $i"
-            db.execSQL("INSERT INTO $TABLE_PLACE ($COLUMN_TYPE, $COLUMN_NAME, $COLUMN_ADDRESS) VALUES ('$type', '$name', '$address');")
+            val nameWithIndex = "$name$i"
+            val addressWithIndex = "$address $i"
+            db?.execSQL("INSERT INTO $TABLE_PLACE ($COLUMN_TYPE, $COLUMN_NAME, $COLUMN_ADDRESS) VALUES ('$type', '$nameWithIndex', '$addressWithIndex');")
         }
     }
+
+    fun searchProfiles(query: String): List<Profile> {
+        val profiles = mutableListOf<Profile>()
+        val db = this.readableDatabase
+        val cursor: Cursor = db.rawQuery(
+            "SELECT * FROM $TABLE_PLACE WHERE $COLUMN_NAME LIKE ? OR $COLUMN_ADDRESS LIKE ? OR $COLUMN_TYPE LIKE ?",
+            arrayOf("%$query%", "%$query%", "%$query%")
+        )
+
+        if (cursor.moveToFirst()) {
+            do {
+                val type = cursor.getString(cursor.getColumnIndexOrThrow(COLUMN_TYPE))
+                val name = cursor.getString(cursor.getColumnIndexOrThrow(COLUMN_NAME))
+                val address = cursor.getString(cursor.getColumnIndexOrThrow(COLUMN_ADDRESS))
+                profiles.add(Profile(name, address, type))
+            } while (cursor.moveToNext())
+        }
+        cursor.close()
+        return profiles
+    }
 }
 

app/src/main/java/campus/tech/kakao/map/MainActivity.kt

@@ -1,15 +1,160 @@
 package campus.tech.kakao.map
 
-import android.database.Cursor
+import android.content.Context
 import android.os.Bundle
+import android.text.Editable
+import android.text.TextWatcher
+import android.view.LayoutInflater
+import android.view.View
+import android.widget.Button
+import android.widget.EditText
+import android.widget.HorizontalScrollView
+import android.widget.ImageView
+import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.widget.LinearLayoutCompat
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import org.json.JSONArray
 
 class MainActivity : AppCompatActivity() {
+    lateinit var adapter: Adapter
+    lateinit var dbHelper: DBHelper
+    lateinit var tvNoResult: TextView
+    lateinit var llSave: LinearLayoutCompat
+    lateinit var hScrollView: HorizontalScrollView
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
-        val dbHelper = DBHelper(this)
-        val db = dbHelper.writableDatabase
+        dbHelper = DBHelper(this)
+
+        val etSearch = findViewById<EditText>(R.id.etSearch)
+        tvNoResult = findViewById(R.id.tvNoResult)
+        val recyclerView = findViewById<RecyclerView>(R.id.recyclerView)
+        recyclerView.layoutManager = LinearLayoutManager(this)
+        val btnClose = findViewById<Button>(R.id.btnClose)
+        llSave = findViewById(R.id.llSave)
+        hScrollView = findViewById(R.id.hScrollView)
+
+        adapter = Adapter(emptyList())
+        recyclerView.adapter = adapter
+
+        tvNoResult.visibility = TextView.VISIBLE
+
+        etSearch.addTextChangedListener(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?) {
+                val search = s.toString()
+                searchProfiles(search)
+            }
+        })
+
+        adapter.setOnItemClickListener(object : Adapter.OnItemClickListener {
+            override fun onItemClick(name: String) {
+                if (isProfileInSearchSave(name)) {
+                    removeSavedItem(name)
+                }
+                addSavedItem(name)
+            }
+        })
+
+        btnClose.setOnClickListener {
+            etSearch.text.clear()
+        }
+        loadSavedItems()
+    }
+
+    override fun onPause() {
+        super.onPause()
+        saveSavedItems()
+    }
+
+    fun saveSavedItems() {
+        val sharedPreferences = getSharedPreferences("SavedItems", MODE_PRIVATE)
+        val editor = sharedPreferences.edit()
+        val savedNames = JSONArray()
+        for (i in 0 until llSave.childCount) {
+            val savedView = llSave.getChildAt(i) as? ConstraintLayout
+            val tvSaveName = savedView?.findViewById<TextView>(R.id.tvSaveName)
+            if (tvSaveName != null) {
+                savedNames.put(tvSaveName.text.toString())
+            }
+        }
+        editor.putString("savedNames", savedNames.toString())
+        editor.apply()
+    }
+
+    fun loadSavedItems() {
+        val sharedPreferences = getSharedPreferences("SavedItems", MODE_PRIVATE)
+        val savedNamesString = sharedPreferences.getString("savedNames", "[]")
+        val savedNames = JSONArray(savedNamesString)
+        for (i in 0 until savedNames.length()) {
+            val name = savedNames.getString(i)
+            addSavedItem(name)
+        }
+    }
+
+    fun searchProfiles(query: String) {
+        if (query.isEmpty()) {
+            tvNoResult.visibility = TextView.VISIBLE
+            adapter.updateProfiles(emptyList())
+        } else {
+            val profileList = dbHelper.searchProfiles(query)
+            if (profileList.isEmpty()) {
+                tvNoResult.visibility = TextView.VISIBLE
+            } else {
+                tvNoResult.visibility = TextView.GONE
+            }
+            adapter.updateProfiles(profileList)
+        }
+    }
+
+    fun addSavedItem(name: String) {
+        val savedView = LayoutInflater.from(this)
+            .inflate(R.layout.search_save, llSave, false) as ConstraintLayout
+
+        val tvSaveName = savedView.findViewById<TextView>(R.id.tvSaveName)
+        val ivDelete = savedView.findViewById<ImageView>(R.id.ivDelete)
+
+        tvSaveName.text = name
+        ivDelete.setOnClickListener {
+            llSave.removeView(savedView)
+        }
+
+        llSave.addView(savedView)
+        hScrollView.visibility = View.VISIBLE
+        scrollToEndOfSearchSave()
+    }
+
+    fun removeSavedItem(name: String) {
+        for (i in 0 until llSave.childCount) {
+            val savedView = llSave.getChildAt(i) as? ConstraintLayout
+            val tvSaveName = savedView?.findViewById<TextView>(R.id.tvSaveName)
+            if (tvSaveName?.text.toString() == name) {
+                llSave.removeViewAt(i)
+                break
+            }
+        }
+    }
+
+    fun isProfileInSearchSave(name: String): Boolean {
+        for (i in 0 until llSave.childCount) {
+            val savedView = llSave.getChildAt(i) as? ConstraintLayout
+            val tvSaveName = savedView?.findViewById<TextView>(R.id.tvSaveName)
+            if (tvSaveName?.text.toString() == name) {
+                return true
+            }
+        }
+        return false
+    }
+
+    fun scrollToEndOfSearchSave() {
+        hScrollView.post {
+            hScrollView.fullScroll(View.FOCUS_RIGHT)
+        }
     }
 }

app/src/main/java/campus/tech/kakao/map/Profile.kt

@@ -0,0 +1,7 @@
+package campus.tech.kakao.map
+
+data class Profile (
+    val name: String,
+    val address: String,
+    val type: String
+)