5주차 과제 PR

BCSD_Assignment_2/app/src/main/AndroidManifest.xml → assignment_week_5/app/src/main/AndroidManifest.xml

@@ -12,6 +12,9 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.Test"
         tools:targetApi="31">
+        <activity
+            android:name=".SecondActivity"
+            android:exported="false" />
         <activity
             android:name=".MainActivity"
             android:exported="true">

assignment_week_5/app/src/main/java/com/example/test/MainActivity.kt

@@ -0,0 +1,48 @@
+package com.example.test
+
+import android.content.Intent
+import android.os.Bundle
+import android.widget.Button
+import android.widget.TextView
+import android.widget.Toast
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.appcompat.app.AppCompatActivity
+
+class MainActivity : AppCompatActivity() {
+
+    private var count = 0
+    private lateinit var countTextView: TextView
+
+    private val activityLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
+        if (result.resultCode == RESULT_OK) {
+            val randomValue = result.data?.getIntExtra("randomValue", count)
+            count = randomValue ?: count
+            countTextView.text = count.toString()
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        val toastButton: Button = findViewById(R.id.toastButton)
+        val countButton: Button = findViewById(R.id.countButton)
+        val randomButton: Button = findViewById(R.id.randomButton)
+        countTextView = findViewById(R.id.countTextView)
+
+        toastButton.setOnClickListener {
+            Toast.makeText(this, "Toast 메시지 출력", Toast.LENGTH_SHORT).show()
+        }
+
+        countButton.setOnClickListener {
+            count++
+            countTextView.text = count.toString()
+        }
+
+        randomButton.setOnClickListener {
+            val intent = Intent(this, SecondActivity::class.java)
+            intent.putExtra("count", count)
+            activityLauncher.launch(intent)
+        }
+    }
+}

assignment_week_5/app/src/main/java/com/example/test/SecondActivity.kt

@@ -0,0 +1,33 @@
+package com.example.test
+
+import android.app.Activity
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Button
+import android.widget.TextView
+import kotlin.random.Random
+
+class SecondActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_second)
+
+        val count = intent.getIntExtra("count", 0)
+
+        val randomValue = Random.nextInt(0, count + 1)
+
+        val randomTextView: TextView = findViewById(R.id.randomTextView)
+        randomTextView.text = randomValue.toString()
+
+        val backButton: Button = findViewById(R.id.backButton)
+        backButton.setOnClickListener {
+            val resultIntent = Intent().apply {
+                putExtra("randomValue", randomValue)
+            }
+            setResult(Activity.RESULT_OK, resultIntent)
+            finish()
+        }
+    }
+}

assignment_week_5/app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout 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=".MainActivity">
+
+    <TextView
+        android:id="@+id/countTextView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="0"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        android:textSize="24sp"/>
+
+    <Button
+        android:id="@+id/toastButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Toast"
+        app:layout_constraintTop_toBottomOf="@id/countTextView"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"/>
+
+    <Button
+        android:id="@+id/countButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Count"
+        app:layout_constraintTop_toBottomOf="@id/toastButton"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"/>
+
+    <Button
+        android:id="@+id/randomButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Random"
+        app:layout_constraintTop_toBottomOf="@id/countButton"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"/>
+</androidx.constraintlayout.widget.ConstraintLayout>

assignment_week_5/app/src/main/res/layout/activity_second.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout 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=".SecondActivity">
+
+    <TextView
+        android:id="@+id/randomTextView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="24sp"
+        tools:text="랜덤 번호 생성"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"/>
+
+    <Button
+        android:id="@+id/backButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Back"
+        app:layout_constraintTop_toBottomOf="@id/randomTextView"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>