implement navigation

app/build.gradle

@@ -1,4 +1,4 @@
-apply from: 'versions.gradle'
+apply from: '../versions.gradle'
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'

app/src/main/AndroidManifest.xml

@@ -12,7 +12,7 @@
         android:theme="@style/AppTheme">
 
         <activity
-            android:name=".view.HomeActivity"
+            android:name=".view.MainActivity"
             android:screenOrientation="portrait">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

app/src/main/java/com/hako/friendlists/view/HomeActivity.kt

@@ -1,7 +0,0 @@
-package com.hako.friendlists.view
-
-import androidx.appcompat.app.AppCompatActivity
-
-class HomeActivity : AppCompatActivity() {
-
-}

app/src/main/java/com/hako/friendlists/view/MainActivity.kt

@@ -0,0 +1,22 @@
+package com.hako.friendlists.view
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import androidx.navigation.findNavController
+import com.hako.friendlists.R
+
+class MainActivity : AppCompatActivity() {
+
+    private val navController by lazy { findNavController(R.id.main_fragment_container) }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        setupNavigation()
+    }
+
+    private fun setupNavigation() {
+        navController.setGraph(R.navigation.main_navigation)
+    }
+
+}

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

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<fragment xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/main_fragment_container"
+    android:name="androidx.navigation.fragment.NavHostFragment"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:defaultNavHost="true" />

app/src/main/res/navigation/main_navigation.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/main_navigation"
+    app:startDestination="@id/userlist_navigation">
+
+    <include app:graph="@navigation/userlist_navigation" />
+
+</navigation>

app/versions.gradle

@@ -1,33 +0,0 @@
-ext.deps = [:]
-
-def versions = [:]
-versions.kotlin = "1.3.41"
-versions.gradle = "3.5.3"
-
-def deps = [:]
-
-def project = [:]
-project.kotlin = "org.jetbrains.kotlin:kotlin-gradle-plugin:$versions.kotlin"
-project.gradle = "com.android.tools.build:gradle:$versions.gradle"
-deps.project = project
-
-def build_versions = [:]
-build_versions.min_sdk = 21
-build_versions.target_sdk = 29
-build_versions.build_tools = "29.0.3"
-ext.build_versions = build_versions
-
-def kotlin = [:]
-kotlin.version = "$versions.kotlin"
-kotlin.std_lib = "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$versions.kotlin"
-deps.kotlin = kotlin
-
-ext.deps = deps
-
-def addRepos(RepositoryHandler handler) {
-    handler.google()
-    handler.jcenter()
-    handler.maven { url 'https://oss.sonatype.org/content/repositories/snapshots' }
-}
-
-ext.addRepos = this.&addRepos

base/build.gradle

@@ -39,6 +39,8 @@ dependencies {
     api deps.androidx.lifecycle_ext
     api deps.androidx.lifecycle_viewmodel
     api deps.androidx.recycler_view
+    api deps.androidx.navigation_fragment
+    api deps.androidx.navigation_ui
     api deps.retrofit.runtime
     api deps.retrofit.gson
     api deps.retrofit.rx

base/src/main/java/com/hako/base/extensions/NavigationExtensions.kt

@@ -0,0 +1,19 @@
+package com.hako.base.extensions
+
+import androidx.annotation.IdRes
+import androidx.appcompat.app.AppCompatActivity
+import androidx.fragment.app.Fragment
+import androidx.navigation.fragment.NavHostFragment
+
+fun AppCompatActivity.findNavHostFragment(@IdRes id: Int) =
+    supportFragmentManager.findFragmentById(id) as NavHostFragment
+
+fun Fragment.findNavHostFragment(@IdRes id: Int) =
+    childFragmentManager.findFragmentById(id) as NavHostFragment
+
+fun Fragment.findNavController(@IdRes id: Int) =
+    androidx.navigation.Navigation.findNavController(view?.findViewById(id) ?: viewNotFound(id, this))
+
+private fun viewNotFound(@IdRes id: Int, fragment: Fragment): Nothing = throw IllegalStateException(
+    "View ID $id at '${fragment::class.java.simpleName}' not found."
+)

base/versions.gradle

@@ -7,6 +7,7 @@ versions.androidx_core = "1.1.0"
 versions.androidx_constraint_layout = "1.1.3"
 versions.androidx_lifecycle = "2.2.0"
 versions.androidx_recycler_view = "1.1.0"
+versions.androidx_navigation = "2.2.0"
 versions.okhttp_logging_interceptor = "4.3.1"
 versions.retrofit = "2.7.1"
 versions.timber = "4.7.1"
@@ -33,6 +34,8 @@ androidx.constraint_layout = "androidx.constraintlayout:constraintlayout:$versio
 androidx.lifecycle_ext = "androidx.lifecycle:lifecycle-extensions:$versions.androidx_lifecycle"
 androidx.lifecycle_viewmodel = "androidx.lifecycle:lifecycle-viewmodel-ktx:$versions.androidx_lifecycle"
 androidx.recycler_view = "androidx.recyclerview:recyclerview:$versions.androidx_recycler_view"
+androidx.navigation_fragment = "androidx.navigation:navigation-fragment-ktx:$versions.androidx_navigation"
+androidx.navigation_ui = "androidx.navigation:navigation-ui-ktx:$versions.androidx_navigation"
 deps.androidx = androidx
 
 def retrofit = [:]

userlist/src/main/java/com/hako/friendlist/feature/UserlistFragment.kt

@@ -1,4 +1,14 @@
 package com.hako.friendlist.feature
 
-class UserlistFragment {
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import com.hako.friendlist_userlist.R
+
+class UserlistFragment : Fragment() {
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        return inflater.inflate(R.layout.fragment_userlist, container, false)
+    }
 }

userlist/src/main/res/layout/fragment_userlist.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/textView2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello world"
+        tools:layout_editor_absoluteX="174dp"
+        tools:layout_editor_absoluteY="352dp" />
+</androidx.constraintlayout.widget.ConstraintLayout>

userlist/src/main/res/navigation/userlist_navigation.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation 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:id="@+id/userlist_navigation"
+    app:startDestination="@id/userListFragment">
+
+    <fragment
+        android:id="@+id/userListFragment"
+        android:name="com.hako.friendlist.feature.UserlistFragment"
+        tools:layout="@layout/fragment_userlist"
+        android:label="UserListFragment" />
+
+</navigation>