[강원대 Android_주민철] 2주차 과제 1단계

README.md

@@ -1 +1,12 @@
 # android-map-keyword
+# 1단계
+
+## 기능 요구 사항
+- 카카오맵 클론 코딩을 위한 시작입니다.
+- 검색어 입력 및 검색 결과를 표시할 기본 레이아웃을 구현한다.
+- 검색에 사용될 데이터를 로컬 데이터베이스에 생성한다.
+
+## 프로그래밍 요구 사항
+- 검색 데이터는 저장은 SQLite를 사용한다.
+- 가능한 MVVM 아키텍처 패턴을 적용하도록 한다.
+- 코드 컨벤션을 준수하며 프로그래밍한다.

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

@@ -1,11 +1,25 @@
 package campus.tech.kakao.map
 
+import android.content.ContentValues
 import android.os.Bundle
+import android.util.Log
 import androidx.appcompat.app.AppCompatActivity
 
 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+
+        val dbHelper = PlaceDbHelper(applicationContext)
+        val db = dbHelper.writableDatabase
+//        dbHelper.onUpgrade(db, 1, 2)
+        val mainViewModel = MainViewModel(application)
+        mainViewModel.insertInitData()
+        var places = mutableListOf<Place>()
+        places = dbHelper.searchPlaceName("")
+        places.forEach {
+            Log.d("testt", "onCreate: ${it.name}")
+        }
+
     }
 }

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

@@ -0,0 +1,21 @@
+package campus.tech.kakao.map
+
+import android.app.Application
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+
+class MainViewModel(application: Application): AndroidViewModel(application) {
+	private var placeList = MutableLiveData<List<Place>>()
+	private val dbHelper = PlaceDbHelper(application)
+
+	fun insertInitData(){
+		if (!dbHelper.existData()){
+			for(i in 1..10){
+				dbHelper.addPlace(Place("카페 $i", "남양주 $i", "카페"))
+				dbHelper.addPlace(Place("약국 $i", "남양주 $i", "약국"))
+			}
+		}
+
+	}
+}

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

@@ -0,0 +1,3 @@
+package campus.tech.kakao.map
+
+data class Place(val name: String, val address: String, val type: String)

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

@@ -0,0 +1,10 @@
+package campus.tech.kakao.map
+
+import android.provider.BaseColumns
+
+object PlaceContract:BaseColumns {
+	const val TABLE_NAME = "place"
+	const val COLUMN_NAME_NAME = "name"
+	const val COLUMN_NAME_ADDRESS = "address"
+	const val COLUMN_NAME_TYPE = "type"
+}

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

@@ -0,0 +1,98 @@
+package campus.tech.kakao.map
+
+import android.content.ContentValues
+import android.content.Context
+import android.database.sqlite.SQLiteDatabase
+import android.database.sqlite.SQLiteOpenHelper
+
+class PlaceDbHelper(context: Context):SQLiteOpenHelper(
+	context, "place.db", null, 2) {
+	override fun onCreate(db: SQLiteDatabase?) {
+		db?.execSQL("CREATE TABLE ${PlaceContract.TABLE_NAME} " +
+				"(${PlaceContract.COLUMN_NAME_NAME} TEXT, " +
+				"${PlaceContract.COLUMN_NAME_ADDRESS} TEXT, " +
+				"${PlaceContract.COLUMN_NAME_TYPE} TEXT)")
+	}
+
+	override fun onUpgrade(db: SQLiteDatabase?, oldVersion: Int, newVersion: Int) {
+		db?.execSQL("DROP TABLE IF EXISTS ${PlaceContract.TABLE_NAME}")
+		onCreate(db)
+	}
+
+	fun addPlace(place: Place) {
+		val db = writableDatabase
+		if (!existPlace(place, db)){
+			val values = ContentValues()
+			values.put(PlaceContract.COLUMN_NAME_NAME, place.name)
+			values.put(PlaceContract.COLUMN_NAME_ADDRESS, place.address)
+			values.put(PlaceContract.COLUMN_NAME_TYPE, place.type)
+			db.insert(PlaceContract.TABLE_NAME, null, values)
+			db.close()
+		}
+	}
+
+	fun existData(): Boolean{
+		val db = readableDatabase
+		val cursor = db.query(
+			PlaceContract.TABLE_NAME,
+			arrayOf(PlaceContract.COLUMN_NAME_NAME),
+			null,
+			null,
+			null,
+			null,
+			null
+		)
+		val result = cursor.moveToFirst()
+		cursor.close()
+		return if (result) true else false
+	}
+
+	fun existPlace(place: Place, db: SQLiteDatabase): Boolean{
+		val selection = "${PlaceContract.COLUMN_NAME_NAME} like ? AND " +
+				"${PlaceContract.COLUMN_NAME_ADDRESS} like ? AND " +
+				"${PlaceContract.COLUMN_NAME_TYPE} like ?"
+		val cursor = db.query(
+			PlaceContract.TABLE_NAME,
+			arrayOf(PlaceContract.COLUMN_NAME_NAME),
+			selection,
+			arrayOf(place.name, place.address, place.type),
+			null,
+			null,
+			"${PlaceContract.COLUMN_NAME_NAME} DESC"
+		)
+
+		val result = cursor.moveToFirst()
+		cursor.close()
+		return if (result) true else false
+	}
+
+	fun searchPlaceName(name: String): MutableList<Place>{
+		val results = mutableListOf<Place>()
+		var searchResult = "%${name}%"
+		val cursor = readableDatabase.query(
+			PlaceContract.TABLE_NAME,
+			arrayOf(PlaceContract.COLUMN_NAME_NAME,
+				PlaceContract.COLUMN_NAME_ADDRESS,
+				PlaceContract.COLUMN_NAME_TYPE),
+			"${PlaceContract.COLUMN_NAME_NAME} like ?",
+			arrayOf(searchResult),
+			null,
+			null,
+			"${PlaceContract.COLUMN_NAME_NAME} ASC"
+		)
+
+		while (cursor.moveToNext()) {
+			val name = cursor.getString(
+				cursor.getColumnIndexOrThrow(PlaceContract.COLUMN_NAME_NAME)
+			)
+			val address = cursor.getString(
+				cursor.getColumnIndexOrThrow(PlaceContract.COLUMN_NAME_ADDRESS)
+			)
+			val type = cursor.getString(
+				cursor.getColumnIndexOrThrow(PlaceContract.COLUMN_NAME_TYPE))
+			results.add(Place(name, address, type))
+		}
+		cursor.close()
+		return results
+	}
+}

app/src/main/res/layout/activity_main.xml

@@ -7,10 +7,35 @@
     android:layout_height="match_parent"
     tools:context=".MainActivity">
 
+
+
+    <EditText
+        android:id="@+id/search"
+        android:layout_width="match_parent"
+        android:layout_height="50dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        android:layout_marginEnd="10dp"
+        android:layout_marginStart="10dp"
+        android:hint="@string/search_hint"
+        android:layout_marginTop="10dp"/>
+    <TextView
+        android:id="@+id/search_clear"
+        android:layout_width="20dp"
+        android:layout_height="20dp"
+        android:background="@drawable/x"
+        app:layout_constraintEnd_toEndOf="parent"
+        android:layout_marginEnd="15dp"
+        app:layout_constraintBottom_toBottomOf="@+id/search"
+        android:layout_marginBottom="15dp"/>
+
+
+
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
+        android:text="@string/no_search_result"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"

app/src/main/res/values/strings.xml

@@ -1,3 +1,5 @@
 <resources>
     <string name="app_name">Map</string>
+    <string name="search_hint">검색어를 입력해 주세요.</string>
+    <string name="no_search_result">검색 결과가 없습니다.</string>
 </resources>