Syeonnn

syeonnn/.gitignore.txt

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+.DS_Store
+syeonnn/.DS_Store

syeonnn/3rdStudy/README.md

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+# 4th_UMC_Android
+UMC 4기 Android 스터디

syeonnn/3rdStudy/app/build.gradle

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+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+}
+
+android {
+    namespace 'com.example.a3ndstudy'
+    compileSdk 33
+
+    defaultConfig {
+        applicationId "com.example.a3ndstudy"
+        minSdk 24
+        targetSdk 33
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    buildFeatures {
+        viewBinding = true
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.core:core-ktx:1.7.0'
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'com.google.android.material:material:1.8.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+}

syeonnn/3rdStudy/app/src/androidTest/java/com/example/a3ndstudy/ExampleInstrumentedTest.kt

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+package com.example.a3ndstudy
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.example.a3ndstudy", appContext.packageName)
+    }
+}

syeonnn/3rdStudy/app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.3ndStudy"
+        tools:targetApi="31">
+        <activity
+            android:name=".ThirdActivity"
+            android:exported="false" />
+        <activity
+            android:name=".SecondActivity"
+            android:exported="false" />
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

syeonnn/3rdStudy/app/src/main/java/com/example/a3ndstudy/FirstFragment.kt

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+package com.example.a3ndstudy
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import com.example.a3ndstudy.databinding.FragmentFirstBinding
+
+class FirstFragment : Fragment() {
+    private lateinit var binding : FragmentFirstBinding
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        binding = FragmentFirstBinding.inflate(layoutInflater)
+        return binding.root
+    }
+
+}

syeonnn/3rdStudy/app/src/main/java/com/example/a3ndstudy/MainActivity.kt

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+package com.example.a3ndstudy
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Toast
+import androidx.activity.result.ActivityResultLauncher
+import androidx.activity.result.contract.ActivityResultContracts
+import com.example.a3ndstudy.databinding.ActivityMainBinding
+
+class MainActivity : AppCompatActivity() {
+    private lateinit var binding: ActivityMainBinding
+    private lateinit var getResultText: ActivityResultLauncher<Intent>
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
+
+        getResultText = registerForActivityResult(
+            ActivityResultContracts.StartActivityForResult()
+        ) { result ->
+            if (result.resultCode == RESULT_OK) {
+                val mString = result.data?.getStringExtra("result")
+                Toast.makeText(this,mString,Toast.LENGTH_LONG).show()
+            }
+        }
+
+        binding.button.setOnClickListener {
+            val text = binding.editText.text.toString()
+            val intent = Intent(this, SecondActivity::class.java)
+            intent.putExtra("text", text)
+            getResultText.launch(intent)
+        }
+
+
+    }
+
+}

syeonnn/3rdStudy/app/src/main/java/com/example/a3ndstudy/SecondActivity.kt

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+package com.example.a3ndstudy
+
+import android.app.Activity
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import androidx.activity.result.ActivityResultLauncher
+import androidx.activity.result.contract.ActivityResultContracts
+import com.example.a3ndstudy.databinding.ActivitySecondBinding
+
+class SecondActivity : AppCompatActivity() {
+    private lateinit var binding: ActivitySecondBinding
+    private lateinit var getResultText: ActivityResultLauncher<Intent>
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivitySecondBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
+
+        val extras = intent.extras
+        val data = extras!!["text"] as String
+
+        binding.textView.text = data
+
+        binding.button.setOnClickListener {
+            val intent = Intent(this, ThirdActivity::class.java)
+            startActivity(intent)
+        }
+
+    }
+
+    override fun onBackPressed() {
+        val mIntent = Intent(this,MainActivity::class.java)
+        mIntent.putExtra("result", "back")
+        setResult(RESULT_OK, mIntent)
+        finish()
+    }
+}

syeonnn/3rdStudy/app/src/main/java/com/example/a3ndstudy/SecondFragment.kt

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+package com.example.a3ndstudy
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import com.example.a3ndstudy.databinding.FragmentSecondBinding
+
+class SecondFragment : Fragment() {
+    private lateinit var binding : FragmentSecondBinding
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        binding = FragmentSecondBinding.inflate(layoutInflater)
+        return binding.root
+    }
+}

syeonnn/3rdStudy/app/src/main/java/com/example/a3ndstudy/ThirdActivity.kt

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+package com.example.a3ndstudy
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Toast
+import com.example.a3ndstudy.databinding.ActivityThirdBinding
+import com.example.a3ndstudy.databinding.FragmentFirstBinding
+
+class ThirdActivity : AppCompatActivity() {
+    private lateinit var binding: ActivityThirdBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityThirdBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        supportFragmentManager
+            .beginTransaction()
+            .replace(binding.frameFragment.id, FirstFragment())
+            .commitAllowingStateLoss()
+
+        binding.btnFg1.setOnClickListener {
+            supportFragmentManager
+                .beginTransaction()
+                .replace(binding.frameFragment.id, FirstFragment())
+                .commitAllowingStateLoss()
+        }
+
+        binding.btnFg2.setOnClickListener {
+            supportFragmentManager
+                .beginTransaction()
+                .replace(binding.frameFragment.id, SecondFragment())
+                .commitAllowingStateLoss()
+        }
+    }
+}

syeonnn/3rdStudy/app/src/main/res/layout/activity_main.xml

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+<?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">
+
+    <EditText
+        android:id="@+id/editText"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:hint="무엇이든 입력하세요."
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        />
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="click"
+        app:layout_constraintTop_toBottomOf="@+id/editText"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

syeonnn/3rdStudy/app/src/main/res/layout/activity_second.xml

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+<?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/textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="temp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent" />
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Move to page3"
+        app:layout_constraintTop_toBottomOf="@+id/textView"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

syeonnn/3rdStudy/app/src/main/res/layout/activity_third.xml

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+<?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=".ThirdActivity">
+
+    <FrameLayout
+        android:id="@+id/frame_fragment"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toTopOf="@+id/linearLayout"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="parent">
+    </FrameLayout>
+
+    <LinearLayout
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:id="@+id/linearLayout"
+        android:orientation="horizontal"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" >
+
+        <Button
+            android:id="@+id/btn_fg1"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="fragment1"
+            android:layout_weight="1"
+            />
+
+        <Button
+            android:id="@+id/btn_fg2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="fragment2"
+            android:layout_weight="1" />
+
+    </LinearLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>