From bb5603ae2323ca35578e53e0894e486faf82d265 Mon Sep 17 00:00:00 2001
From: hwan04 <73435826+hwan04@users.noreply.github.com>
Date: Mon, 30 Sep 2024 10:16:55 +0900
Subject: [PATCH 1/5] =?UTF-8?q?design(MainActivity):=20xml=20=EC=A0=9C?=
 =?UTF-8?q?=EC=9E=91?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/build.gradle.kts                          |  4 ++++
 .../com/alom/androidstudy1/MainActivity.kt    | 13 ++++++------
 app/src/main/res/layout/activity_main.xml     | 20 ++++++++++++-------
 gradle/wrapper/gradle-wrapper.properties      |  4 ++--
 4 files changed, 25 insertions(+), 16 deletions(-)

diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index e86faf7..f00c680 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -7,6 +7,10 @@ android {
     namespace = "com.alom.androidstudy1"
     compileSdk = 34
 
+    buildFeatures{
+        viewBinding = true
+    }
+
     defaultConfig {
         applicationId = "com.alom.androidstudy1"
         minSdk = 26
diff --git a/app/src/main/java/com/alom/androidstudy1/MainActivity.kt b/app/src/main/java/com/alom/androidstudy1/MainActivity.kt
index c1bcbbf..6821ab3 100644
--- a/app/src/main/java/com/alom/androidstudy1/MainActivity.kt
+++ b/app/src/main/java/com/alom/androidstudy1/MainActivity.kt
@@ -5,16 +5,15 @@ import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
+import com.alom.androidstudy1.databinding.ActivityMainBinding
 
 class MainActivity : AppCompatActivity() {
+    private lateinit var binding: ActivityMainBinding
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        enableEdgeToEdge()
-        setContentView(R.layout.activity_main)
-        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
-            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
-            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
-            insets
-        }
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+
     }
 }
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 86a5d97..6ae8f5e 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -7,13 +7,19 @@
     android:layout_height="match_parent"
     tools:context=".MainActivity">
 
-    <TextView
-        android:layout_width="wrap_content"
+    <EditText
+        android:id="@+id/etText"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:gravity="center"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toTopOf="@+id/btnSave"
+        tools:text="22"/>
+
+    <Button
+        android:id="@+id/btnSave"
+        android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintBottom_toBottomOf="parent"/>
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 551d768..3aa22c4 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Wed Sep 25 21:41:25 KST 2024
+#Mon Sep 30 10:06:39 KST 2024
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

From a01bf7eae17a8da5adce21e5eb0a4fe33679e3a0 Mon Sep 17 00:00:00 2001
From: hwan04 <73435826+hwan04@users.noreply.github.com>
Date: Sun, 6 Oct 2024 22:57:25 +0900
Subject: [PATCH 2/5] =?UTF-8?q?feat(ViewModel,=20SharedPreference):=20?=
 =?UTF-8?q?=EB=B7=B0=EB=AA=A8=EB=8D=B8=EA=B3=BC=20preference=20=ED=81=B4?=
 =?UTF-8?q?=EB=9E=98=EC=8A=A4=20=EA=B5=AC=ED=98=84?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../com/alom/androidstudy1/MemoViewModel.kt   | 20 +++++++++++++++++++
 .../com/alom/androidstudy1/PreferenceUtil.kt  | 17 ++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 app/src/main/java/com/alom/androidstudy1/MemoViewModel.kt
 create mode 100644 app/src/main/java/com/alom/androidstudy1/PreferenceUtil.kt

diff --git a/app/src/main/java/com/alom/androidstudy1/MemoViewModel.kt b/app/src/main/java/com/alom/androidstudy1/MemoViewModel.kt
new file mode 100644
index 0000000..9a00b23
--- /dev/null
+++ b/app/src/main/java/com/alom/androidstudy1/MemoViewModel.kt
@@ -0,0 +1,20 @@
+package com.alom.androidstudy1
+
+import android.content.Context
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+
+class MemoViewModel(context: Context) : ViewModel() {
+
+    private val preferenceUtil = PreferenceUtil(context)
+    private val _currentValue = MutableLiveData<String>()
+
+    val currentValue: LiveData<String>
+        get() = _currentValue
+
+    fun updateMemo(newMemo: String) {
+        _currentValue.value = newMemo
+        preferenceUtil.setString("memo", newMemo)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/alom/androidstudy1/PreferenceUtil.kt b/app/src/main/java/com/alom/androidstudy1/PreferenceUtil.kt
new file mode 100644
index 0000000..1291e50
--- /dev/null
+++ b/app/src/main/java/com/alom/androidstudy1/PreferenceUtil.kt
@@ -0,0 +1,17 @@
+package com.alom.androidstudy1
+
+import android.content.Context
+import android.content.SharedPreferences
+
+class PreferenceUtil(context: Context) {
+    private val prefs: SharedPreferences =
+        context.getSharedPreferences("MemoApplication", Context.MODE_PRIVATE)
+
+    fun getString(key: String, defValue: String): String {
+        return prefs.getString(key, defValue).toString()
+    }
+
+    fun setString(key: String, str: String) {
+        prefs.edit().putString(key, str).apply()
+    }
+}
\ No newline at end of file

From 73fa9e5cfc7120e73570affeba513af61901fe13 Mon Sep 17 00:00:00 2001
From: hwan04 <73435826+hwan04@users.noreply.github.com>
Date: Sun, 6 Oct 2024 23:04:46 +0900
Subject: [PATCH 3/5] =?UTF-8?q?feat(MainActivity):=20=EB=B2=84=ED=8A=BC=20?=
 =?UTF-8?q?=ED=81=B4=EB=A6=AD=20=EC=9D=B4=EB=B2=A4=ED=8A=B8?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/src/main/java/com/alom/androidstudy1/MainActivity.kt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/app/src/main/java/com/alom/androidstudy1/MainActivity.kt b/app/src/main/java/com/alom/androidstudy1/MainActivity.kt
index 6821ab3..decb345 100644
--- a/app/src/main/java/com/alom/androidstudy1/MainActivity.kt
+++ b/app/src/main/java/com/alom/androidstudy1/MainActivity.kt
@@ -5,15 +5,21 @@ import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
+import androidx.lifecycle.ViewModelProvider
 import com.alom.androidstudy1.databinding.ActivityMainBinding
 
 class MainActivity : AppCompatActivity() {
     private lateinit var binding: ActivityMainBinding
+    private lateinit var memoViewModel: MemoViewModel
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         binding = ActivityMainBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
+        memoViewModel = ViewModelProvider(this)[MemoViewModel::class.java]
 
+        binding.btnSave.setOnClickListener{
+            memoViewModel.updateMemo(binding.etText.text.toString())
+        }
     }
 }
\ No newline at end of file

From ed61c3734dbf87b518cc42846644a63e528e39fd Mon Sep 17 00:00:00 2001
From: hwan04 <73435826+hwan04@users.noreply.github.com>
Date: Sun, 6 Oct 2024 23:10:17 +0900
Subject: [PATCH 4/5] =?UTF-8?q?feat(ViewModel):=20=EB=B7=B0=EB=AA=A8?=
 =?UTF-8?q?=EB=8D=B8=20=EA=B8=B0=EB=8A=A5=20=EA=B5=AC=ED=98=84=20=EB=B0=8F?=
 =?UTF-8?q?=20=EA=B5=AC=EC=A1=B0=20=EB=B3=80=EA=B2=BD?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/src/main/java/com/alom/androidstudy1/MainActivity.kt | 9 +++++++++
 .../main/java/com/alom/androidstudy1/MemoViewModel.kt    | 7 ++++---
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/app/src/main/java/com/alom/androidstudy1/MainActivity.kt b/app/src/main/java/com/alom/androidstudy1/MainActivity.kt
index decb345..37f08c1 100644
--- a/app/src/main/java/com/alom/androidstudy1/MainActivity.kt
+++ b/app/src/main/java/com/alom/androidstudy1/MainActivity.kt
@@ -6,7 +6,10 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
 import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.lifecycleScope
 import com.alom.androidstudy1.databinding.ActivityMainBinding
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.launch
 
 class MainActivity : AppCompatActivity() {
     private lateinit var binding: ActivityMainBinding
@@ -21,5 +24,11 @@ class MainActivity : AppCompatActivity() {
         binding.btnSave.setOnClickListener{
             memoViewModel.updateMemo(binding.etText.text.toString())
         }
+
+        lifecycleScope.launch {
+            memoViewModel.currentValue.collect{
+                binding.etText.setText(it)
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/alom/androidstudy1/MemoViewModel.kt b/app/src/main/java/com/alom/androidstudy1/MemoViewModel.kt
index 9a00b23..68ede7c 100644
--- a/app/src/main/java/com/alom/androidstudy1/MemoViewModel.kt
+++ b/app/src/main/java/com/alom/androidstudy1/MemoViewModel.kt
@@ -4,14 +4,15 @@ import android.content.Context
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
 
 class MemoViewModel(context: Context) : ViewModel() {
 
     private val preferenceUtil = PreferenceUtil(context)
-    private val _currentValue = MutableLiveData<String>()
+    private val _currentValue = MutableStateFlow<String>("")
 
-    val currentValue: LiveData<String>
-        get() = _currentValue
+    val currentValue: StateFlow<String> = _currentValue
 
     fun updateMemo(newMemo: String) {
         _currentValue.value = newMemo

From bab493dac514008dd3a1694392adc63f11170530 Mon Sep 17 00:00:00 2001
From: hwan04 <73435826+hwan04@users.noreply.github.com>
Date: Sun, 6 Oct 2024 23:28:31 +0900
Subject: [PATCH 5/5] =?UTF-8?q?fix(ViewModel):=20Context=20=EB=AA=BB=20?=
 =?UTF-8?q?=EB=B0=9B=EC=95=84=EC=98=A4=EB=8A=94=20=EC=98=A4=EB=A5=98=20?=
 =?UTF-8?q?=ED=95=B4=EA=B2=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../main/java/com/alom/androidstudy1/MemoViewModel.kt  | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/com/alom/androidstudy1/MemoViewModel.kt b/app/src/main/java/com/alom/androidstudy1/MemoViewModel.kt
index 68ede7c..a8ecd45 100644
--- a/app/src/main/java/com/alom/androidstudy1/MemoViewModel.kt
+++ b/app/src/main/java/com/alom/androidstudy1/MemoViewModel.kt
@@ -1,19 +1,25 @@
 package com.alom.androidstudy1
 
+import android.app.Application
 import android.content.Context
+import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 
-class MemoViewModel(context: Context) : ViewModel() {
+class MemoViewModel(application: Application) : AndroidViewModel(application) {
 
-    private val preferenceUtil = PreferenceUtil(context)
+    private val preferenceUtil = PreferenceUtil(getApplication<Application>().applicationContext)
     private val _currentValue = MutableStateFlow<String>("")
 
     val currentValue: StateFlow<String> = _currentValue
 
+    init{
+        _currentValue.value = preferenceUtil.getString("memo", "")
+    }
+
     fun updateMemo(newMemo: String) {
         _currentValue.value = newMemo
         preferenceUtil.setString("memo", newMemo)