Lee hyungjun/step.01

app/build.gradle

@@ -2,6 +2,7 @@ plugins {
     id 'com.android.application'
     id 'kotlin-android'
     id 'kotlin-kapt'
+
 }
 
 android {
@@ -31,9 +32,8 @@ android {
     kotlinOptions {
         jvmTarget = '1.8'
     }
-
-    buildFeatures{
-        dataBinding = true
+    dataBinding{
+        enabled = true
     }
 }
 

app/src/main/java/sotp/semina/practicegitanddatabinding/MainActivity.kt

@@ -1,50 +1,56 @@
 package sotp.semina.practicegitanddatabinding
 
+import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import android.widget.Button
 import android.widget.EditText
-import android.widget.ImageView
 import android.widget.TextView
-import androidx.appcompat.app.AppCompatActivity
 import androidx.databinding.DataBindingUtil
 import com.bumptech.glide.Glide
 import sotp.semina.practicegitanddatabinding.databinding.ActivityMainBinding
 
 class MainActivity : AppCompatActivity() {
 
+    private lateinit var binding: ActivityMainBinding
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        val binding: ActivityMainBinding =
-            DataBindingUtil.setContentView(this, R.layout.activity_main)
-        initProfileImage(binding.imageProfileImage)
-        setProfileName(binding.textProfileName, DEFAULT_USER_NAME)
-        addButtonClickEvent(binding)
+        setContentView(R.layout.activity_main)
+
+        binding = DataBindingUtil.setContentView(this,R.layout.activity_main)
+        binding.main = this
+
+        initView()
+
+    }
+
+    private fun initView() {
+        initProfileImage()
+        setProfileName(DEFAULT_USER_NAME)
+        addButtonClickEvent()
     }
 
-    private fun initProfileImage(profileImage: ImageView) {
+    private fun initProfileImage() {
         Glide.with(this)
             .load(IMAGE_URL)
-            .into(profileImage)
+            .into(binding.imageProfileImage)
     }
 
-    private fun setProfileName(profileName: TextView, content: String) {
-        profileName.text = content
+    private fun setProfileName(content:String) {
+        binding.textProfileName.text = content
     }
 
-    private fun addButtonClickEvent(binding: ActivityMainBinding) {
+    private fun addButtonClickEvent() {
         binding.buttonProfileChangeButton.setOnClickListener {
-            setProfileName(
-                binding.textProfileName,
-                getEditTextToString(binding.inputChangedProfile)
-            )
+            setProfileName(getEditTextToString(binding.inputChangedProfile))
         }
     }
 
-    private fun getEditTextToString(content: EditText): String = content.text.toString()
+    private fun getEditTextToString(content:EditText):String = content.text.toString()
 
 
     companion object {
-        private const val IMAGE_URL =
-            "https://avatars3.githubusercontent.com/u/45380072?s=460&u=b9fc82996ec2cc568a7dfcbf8846944dc16a7ccd&v=4"
+        private const val IMAGE_URL = "https://avatars3.githubusercontent.com/u/45380072?s=460&u=b9fc82996ec2cc568a7dfcbf8846944dc16a7ccd&v=4"
         private const val DEFAULT_USER_NAME = "Default User Name"
     }
 }

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

@@ -3,6 +3,12 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <data>
+        <variable
+            name="main"
+            type="sotp.semina.practicegitanddatabinding.MainActivity" />
+    </data>
+
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"
         android:layout_height="match_parent"