Na vu

app/build.gradle

@@ -29,6 +29,9 @@ android {
     kotlinOptions {
         jvmTarget = '1.8'
     }
+    buildFeatures{
+        viewBinding = true
+    }
 }
 
 dependencies {
@@ -40,4 +43,5 @@ dependencies {
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    implementation "androidx.fragment:fragment-ktx:1.5.1"
 }

app/src/main/AndroidManifest.xml

@@ -14,14 +14,20 @@
         android:theme="@style/Theme.AndroidD20"
         tools:targetApi="31">
         <activity
-            android:name=".MainActivity"
+            android:name=".Info"
+            android:exported="false" />
+        <activity
+            android:name=".LoginActivity"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".MainActivity"
+            android:exported="false" />
     </application>
 
 </manifest>

app/src/main/java/com/sudo/androidd20/Info.kt

@@ -0,0 +1,24 @@
+package com.sudo.androidd20
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import com.sudo.androidd20.databinding.ActivityInfoBinding
+
+class Info : AppCompatActivity() {
+    private lateinit var infoBinding: ActivityInfoBinding
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        infoBinding = ActivityInfoBinding.inflate(layoutInflater)
+        setContentView(infoBinding.root)
+
+        val bundle: Bundle = intent.getBundleExtra("user")!!
+
+        infoBinding.tvUserName.text = bundle.getString("userName").toString()
+        infoBinding.tvPassword.text = bundle.getString("password").toString()
+
+        infoBinding.btnLogOut.setOnClickListener {
+            finish()
+        }
+
+    }
+}

app/src/main/java/com/sudo/androidd20/LoginActivity.kt

@@ -0,0 +1,21 @@
+package com.sudo.androidd20
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import com.sudo.androidd20.databinding.ActivityLoginBinding
+
+class LoginActivity : AppCompatActivity() {
+    private val loginFragment: LoginFragment = LoginFragment()
+    private val signUpFragment: SignUpFragment = SignUpFragment()
+    private lateinit var activityMainBinding: ActivityLoginBinding
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        activityMainBinding = ActivityLoginBinding.inflate(layoutInflater)
+        setContentView(activityMainBinding.root)
+        if(savedInstanceState == null) {
+            supportFragmentManager.beginTransaction().add(R.id.fragmentState, loginFragment).commit()
+        }
+
+    }
+}
+

app/src/main/java/com/sudo/androidd20/LoginFragment.kt

@@ -0,0 +1,77 @@
+package com.sudo.androidd20
+
+import android.content.Intent
+import android.content.SharedPreferences
+import android.graphics.Paint
+import android.os.Bundle
+import android.text.Editable
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.setFragmentResultListener
+import com.sudo.androidd20.databinding.FragmentLoginBinding
+
+class LoginFragment : Fragment(){
+    private lateinit var fragmentLoginBinding: FragmentLoginBinding
+
+    private var user: User = User("userName", "password")
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        fragmentLoginBinding = FragmentLoginBinding.inflate(inflater, container, false)
+        fragmentLoginBinding.tvSignUp.paintFlags = Paint.UNDERLINE_TEXT_FLAG
+
+        arguments?.let {
+            user = it.getSerializable("account") as User
+        }
+
+        Log.e("USERNAME", "onCreateView1: ${user.userName}", )
+        Log.e("USERNAME", "onCreateView1: ${user.password}", )
+
+        setOnClick()
+
+
+
+
+
+        return fragmentLoginBinding.root
+    }
+
+    private fun setOnClick() {
+        fragmentLoginBinding.apply {
+            tvSignUp.setOnClickListener {
+                requireActivity().supportFragmentManager.beginTransaction().add(R.id.fragmentState, SignUpFragment()).commit()
+            }
+            btnLogin.setOnClickListener {
+                login()
+            }
+        }
+    }
+
+    private fun login() {
+        fragmentLoginBinding.apply {
+            Log.e("ngu", "userName: ${user.userName}", )
+            Log.e("ngu", "password: ${user.password}", )
+
+            if(user.userName == edtUserName.text.toString() && user.password == edtPassword.text.toString()) {
+                val intent = Intent(context, Info::class.java)
+                val bundle: Bundle = Bundle()
+                bundle.putString("userName", edtUserName.text.toString())
+                bundle.putString("password", edtPassword.text.toString())
+                intent.putExtra("user", bundle)
+                startActivity(intent)
+            } else {
+                Log.e("ngu", "login: ngu", )
+            }
+        }
+    }
+}

app/src/main/java/com/sudo/androidd20/SignUpFragment.kt

@@ -0,0 +1,55 @@
+package com.sudo.androidd20
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.os.bundleOf
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.setFragmentResult
+import com.sudo.androidd20.databinding.FragmentLoginBinding
+import com.sudo.androidd20.databinding.FragmentSignUpBinding
+
+class SignUpFragment : Fragment() {
+    private lateinit var fragmentSignUpBinding: FragmentSignUpBinding
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        fragmentSignUpBinding = FragmentSignUpBinding.inflate(inflater, container, false)
+        fragmentSignUpBinding.apply {
+            tvLogin.setOnClickListener {
+                requireActivity().supportFragmentManager.beginTransaction().add(R.id.fragmentState, LoginFragment()).commit()
+            }
+            btnSignUp.setOnClickListener {
+//                childFragmentManager.setFragmentResult("userName", bundleOf(Pair("userName", edtUserName.text.toString())))
+
+
+                signUp()
+            }
+        }
+
+
+
+        return fragmentSignUpBinding.root
+
+
+
+    }
+
+    private fun signUp() {
+        fragmentSignUpBinding.apply {
+            if(edtPassword.text.toString() == edtConfirmPasword.text.toString()) {
+                val user = User(edtUserName.text.toString(), edtPassword.text.toString())
+                val loginFragment = LoginFragment()
+                val bundle = Bundle()
+                bundle.putSerializable("account", user)
+                loginFragment.arguments = bundle
+                requireActivity().supportFragmentManager.beginTransaction().add(R.id.fragmentState, loginFragment).commit()
+            }
+        }
+    }
+
+
+}

app/src/main/java/com/sudo/androidd20/User.kt

@@ -0,0 +1,5 @@
+package com.sudo.androidd20
+
+import java.io.Serializable
+
+data class User(val userName: String, var password: String) : Serializable

app/src/main/res/drawable/background.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <gradient
+        android:angle="-90"
+        android:startColor="#00EEFF"
+        android:endColor="@color/white"
+        android:type="linear" />
+</shape>

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

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".Info"
+    android:orientation="vertical"
+    android:background="@drawable/background"
+    android:gravity="center_horizontal">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:id="@+id/tvUserName"
+        android:layout_marginTop="48dp"
+        android:textAlignment="center"/>
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:id="@+id/tvPassword"
+        android:layout_marginTop="16dp"
+        android:textAlignment="center"/>
+
+    <View
+        android:layout_width="wrap_content"
+        android:layout_height="0dp"
+        android:layout_weight="1"/>
+
+    <androidx.appcompat.widget.AppCompatButton
+        android:id="@+id/btnLogOut"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="36dp"
+        android:text="Logout" />
+
+</LinearLayout>

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

@@ -4,15 +4,16 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity">
+    tools:context=".LoginActivity">
 
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="Hello World!"
+    <androidx.fragment.app.FragmentContainerView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:id="@+id/fragmentState"
+        app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintEnd_toEndOf="parent"
+        />
 
 </androidx.constraintlayout.widget.ConstraintLayout>