최초 프로젝트 생성 및 bottom nav 기본 구성

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+}
+
+android {
+    namespace 'com.example.bangwool'
+    compileSdk 33
+
+    defaultConfig {
+        applicationId "com.example.bangwool"
+        minSdk 30
+        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:1.8.0'
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'com.google.android.material:material:1.9.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.6.1'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.1'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.6.0'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.6.0'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/example/bangwool/ExampleInstrumentedTest.kt

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+package com.example.bangwool
+
+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.bangwool", appContext.packageName)
+    }
+}

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:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.BangWool"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/example/bangwool/MainActivity.kt

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+package com.example.bangwool
+
+import android.os.Bundle
+import android.view.MenuItem
+import com.google.android.material.bottomnavigation.BottomNavigationView
+import androidx.appcompat.app.AppCompatActivity
+import androidx.navigation.findNavController
+import androidx.navigation.ui.AppBarConfiguration
+import androidx.navigation.ui.setupActionBarWithNavController
+import androidx.navigation.ui.setupWithNavController
+import com.example.bangwool.databinding.ActivityMainBinding
+import com.example.bangwool.ui.home.HomeFragment
+import com.example.bangwool.ui.mypage.MyPageFragment
+import com.example.bangwool.ui.ranking.RankingFragment
+import com.example.bangwool.ui.statistic.StatisticFragment
+import com.google.android.material.navigation.NavigationBarView
+
+class MainActivity : AppCompatActivity(), NavigationBarView.OnItemSelectedListener {
+
+    private lateinit var binding: ActivityMainBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+        binding.bottomNav.setOnItemSelectedListener {
+            onNavigationItemSelected(it)
+        }
+        binding.bottomNav.selectedItemId = R.id.navigation_home
+    }
+
+    override fun onNavigationItemSelected(item: MenuItem): Boolean {
+        when(item.itemId){
+            R.id.navigation_home -> {
+                supportFragmentManager.beginTransaction().replace(R.id.main_frm, HomeFragment()).commit()
+            }
+            R.id.navigation_statistic -> {
+                supportFragmentManager.beginTransaction().replace(R.id.main_frm, StatisticFragment()).commit()
+            }
+            R.id.navigation_ranking -> {
+                supportFragmentManager.beginTransaction().replace(R.id.main_frm, RankingFragment()).commit()
+            }
+            R.id.navigation_mypage -> {
+                supportFragmentManager.beginTransaction().replace(R.id.main_frm, MyPageFragment()).commit()
+            }
+        }
+        return true
+    }
+}

app/src/main/java/com/example/bangwool/ui/home/HomeFragment.kt

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+package com.example.bangwool.ui.home
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import com.example.bangwool.databinding.FragmentHomeBinding
+
+class HomeFragment : Fragment() {
+    lateinit var binding : FragmentHomeBinding
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        binding = FragmentHomeBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+}

app/src/main/java/com/example/bangwool/ui/mypage/MyPageFragment.kt

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+package com.example.bangwool.ui.mypage
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import com.example.bangwool.databinding.FragmentMypageBinding
+
+class MyPageFragment : Fragment() {
+    lateinit var binding : FragmentMypageBinding
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        binding = FragmentMypageBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+}

app/src/main/java/com/example/bangwool/ui/ranking/RankingFragment.kt

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+package com.example.bangwool.ui.ranking
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import com.example.bangwool.databinding.FragmentRankingBinding
+
+class RankingFragment : Fragment() {
+    lateinit var binding : FragmentRankingBinding
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        binding = FragmentRankingBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+}

app/src/main/java/com/example/bangwool/ui/statistic/StatisticFragment.kt

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+package com.example.bangwool.ui.statistic
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import com.example.bangwool.databinding.FragmentStatisticBinding
+
+class StatisticFragment : Fragment() {
+    lateinit var binding : FragmentStatisticBinding
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        binding = FragmentStatisticBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+}

app/src/main/res/drawable-v24/ic_launcher_foreground.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

app/src/main/res/drawable/ic_dashboard_black_24dp.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M3,13h8L11,3L3,3v10zM3,21h8v-6L3,15v6zM13,21h8L21,11h-8v10zM13,3v6h8L21,3h-8z" />
+</vector>