- DI 주입 및 ViewModel 구조 구현

danggai · Jan 7, 2021 · 32c9750 · 32c9750
1 parent e92b7d8
commit 32c9750
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Showing 21 changed files with 354 additions and 257 deletions.
diff --git a/app/build.gradle b/app/build.gradle
@@ -47,6 +47,11 @@ dependencies {
     implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.2.0'
     implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0'
 
+    // Koin - DI
+    implementation "org.koin:koin-core:2.0.1"
+    implementation "org.koin:koin-android:2.0.1"
+    implementation "org.koin:koin-androidx-viewmodel:2.0.1"
+
     // ViewPager2
     implementation 'androidx.viewpager2:viewpager2:1.1.0-alpha01'
 

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
@@ -3,14 +3,15 @@
     package="com.example.recyclerview_sticky_headerfooter_example">
 
     <application
+        android:name=".App"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.Recyclerview_Sticky_HeaderFooter_Example">
         <activity
-            android:name=".MainActivity"
+            android:name=".ui.main.MainActivity"
             android:label="@string/app_name"
             android:theme="@style/Theme.Recyclerview_Sticky_HeaderFooter_Example.NoActionBar">
             <intent-filter>

diff --git a/app/src/main/java/com/example/recyclerview_sticky_headerfooter_example/App.kt b/app/src/main/java/com/example/recyclerview_sticky_headerfooter_example/App.kt
@@ -0,0 +1,20 @@
+package com.example.recyclerview_sticky_headerfooter_example
+
+import android.app.Application
+import com.example.recyclerview_sticky_headerfooter_example.di.ViewModelModule
+import org.koin.android.ext.koin.androidContext
+import org.koin.android.ext.koin.androidLogger
+import org.koin.core.context.startKoin
+
+class App: Application() {
+
+    override fun onCreate() {
+        super.onCreate()
+        startKoin {
+            androidLogger()
+            androidContext(this@App)
+            modules(ViewModelModule)
+        }
+    }
+
+}
diff --git a/app/src/main/java/com/example/recyclerview_sticky_headerfooter_example/BindingActivity.kt b/app/src/main/java/com/example/recyclerview_sticky_headerfooter_example/BindingActivity.kt
@@ -0,0 +1,20 @@
+package com.example.recyclerview_sticky_headerfooter_example
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import androidx.annotation.LayoutRes
+import androidx.databinding.DataBindingUtil
+import androidx.databinding.ViewDataBinding
+
+abstract class BindingActivity<T: ViewDataBinding> : AppCompatActivity() {
+    @LayoutRes
+    abstract fun getLayoutResId(): Int
+
+    protected lateinit var binding: T
+        private set
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = DataBindingUtil.setContentView(this, getLayoutResId())
+    }
+}
diff --git a/app/src/main/java/com/example/recyclerview_sticky_headerfooter_example/BindingFragment.kt b/app/src/main/java/com/example/recyclerview_sticky_headerfooter_example/BindingFragment.kt
@@ -0,0 +1,26 @@
+package com.example.recyclerview_sticky_headerfooter_example
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.annotation.LayoutRes
+import androidx.databinding.DataBindingUtil
+import androidx.databinding.ViewDataBinding
+
+abstract class BindingFragment<T: ViewDataBinding> : Fragment() {
+    @LayoutRes
+    abstract fun getLayoutResId(): Int
+
+    protected lateinit var binding: T
+        private set
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        return DataBindingUtil.inflate<T>(inflater, getLayoutResId(), container, false).apply{ binding = this }.root
+    }
+}
diff --git a/app/src/main/java/com/example/recyclerview_sticky_headerfooter_example/MainActivity.kt b/app/src/main/java/com/example/recyclerview_sticky_headerfooter_example/MainActivity.kt
diff --git a/app/src/main/java/com/example/recyclerview_sticky_headerfooter_example/di/ViewModelModule.kt b/app/src/main/java/com/example/recyclerview_sticky_headerfooter_example/di/ViewModelModule.kt
@@ -0,0 +1,11 @@
+package com.example.recyclerview_sticky_headerfooter_example.di
+
+import com.example.recyclerview_sticky_headerfooter_example.ui.main.MainTabViewModel
+import com.example.recyclerview_sticky_headerfooter_example.ui.main.MainViewModel
+import org.koin.androidx.viewmodel.dsl.viewModel
+import org.koin.dsl.module
+
+val ViewModelModule = module {
+    viewModel { MainViewModel() }
+    viewModel { MainTabViewModel() }
+}
diff --git a/...rc/main/java/com/example/recyclerview_sticky_headerfooter_example/ui/main/MainActivity.kt b/...rc/main/java/com/example/recyclerview_sticky_headerfooter_example/ui/main/MainActivity.kt
@@ -0,0 +1,27 @@
+package com.example.recyclerview_sticky_headerfooter_example.ui.main
+
+import android.os.Bundle
+import androidx.annotation.LayoutRes
+import com.example.recyclerview_sticky_headerfooter_example.BindingActivity
+import com.example.recyclerview_sticky_headerfooter_example.R
+import com.example.recyclerview_sticky_headerfooter_example.databinding.ActivityMainBinding
+import org.koin.androidx.viewmodel.ext.android.getViewModel
+
+class MainActivity : BindingActivity<ActivityMainBinding>() {
+
+    @LayoutRes
+    override fun getLayoutResId() = R.layout.activity_main
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding.lifecycleOwner = this
+
+        initFragment()
+    }
+
+    private fun initFragment() {
+        supportFragmentManager.beginTransaction()
+            .add(R.id.fragment, MainFragment.newInstance(), MainFragment.TAG)
+            .commit()
+    }
+}
diff --git a/...rc/main/java/com/example/recyclerview_sticky_headerfooter_example/ui/main/MainFragment.kt b/...rc/main/java/com/example/recyclerview_sticky_headerfooter_example/ui/main/MainFragment.kt
@@ -5,55 +5,62 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.TextView
-import androidx.fragment.app.Fragment
+import androidx.annotation.LayoutRes
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
+import androidx.viewpager2.widget.ViewPager2
+import com.example.recyclerview_sticky_headerfooter_example.BindingFragment
 import com.example.recyclerview_sticky_headerfooter_example.R
+import com.example.recyclerview_sticky_headerfooter_example.databinding.FragmentMainBinding
+import com.google.android.material.floatingactionbutton.FloatingActionButton
+import com.google.android.material.snackbar.Snackbar
+import com.google.android.material.tabs.TabLayout
+import com.google.android.material.tabs.TabLayoutMediator
+import org.koin.androidx.viewmodel.ext.android.getViewModel
 
-/**
- * A placeholder fragment containing a simple view.
- */
-class MainFragment : Fragment() {
+class MainFragment : BindingFragment<FragmentMainBinding>() {
 
-    private lateinit var mainViewModel: MainViewModel
+    companion object {
+        val TAG: String = MainFragment::class.java.simpleName
+        fun newInstance() = MainFragment()
+    }
+
+    private lateinit var mVM: MainViewModel
+
+    @LayoutRes
+    override fun getLayoutResId() = R.layout.fragment_main
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        binding.vm = getViewModel()
+        binding.lifecycleOwner = viewLifecycleOwner
 
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        mainViewModel = ViewModelProvider(this).get(MainViewModel::class.java).apply {
-            setIndex(arguments?.getInt(ARG_SECTION_NUMBER) ?: 1)
+        binding.vm?.let {
+            mVM = it
         }
-    }
 
-    override fun onCreateView(
-            inflater: LayoutInflater, container: ViewGroup?,
-            savedInstanceState: Bundle?
-    ): View? {
-        val root = inflater.inflate(R.layout.fragment_main, container, false)
-        val textView: TextView = root.findViewById(R.id.section_label)
-        mainViewModel.text.observe(this, Observer<String> {
-            textView.text = it
-        })
-        return root
+        initUI()
     }
 
-    companion object {
-        /**
-         * The fragment argument representing the section number for this
-         * fragment.
-         */
-        private const val ARG_SECTION_NUMBER = "section_number"
-
-        /**
-         * Returns a new instance of this fragment for the given section
-         * number.
-         */
-        @JvmStatic
-        fun newInstance(sectionNumber: Int): MainFragment {
-            return MainFragment().apply {
-                arguments = Bundle().apply {
-                    putInt(ARG_SECTION_NUMBER, sectionNumber)
-                }
+    private fun initUI() {
+        val sectionsPagerAdapter = MainPager2Adapter()
+        val viewPager2: ViewPager2 = binding.viewPager2
+        viewPager2.adapter = sectionsPagerAdapter
+
+        val tabs: TabLayout = binding.tabs
+        TabLayoutMediator(tabs, viewPager2) { tab, position ->
+            when (position) {
+                0 -> { tab.text = "TAB 1"}
+                1 -> { tab.text = "TAB 2"}
+                2 -> { tab.text = "TAB 3"}
             }
+            viewPager2.setCurrentItem(tab.position, true)
+        }.attach()
+
+        val fab: FloatingActionButton = binding.fab
+        fab.setOnClickListener { view ->
+            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
+                .setAction("Action", null).show()
         }
     }
 }
diff --git a/..._example/ui/main/SectionsPagerAdapter2.kt → ...oter_example/ui/main/MainPager2Adapter.kt b/..._example/ui/main/SectionsPagerAdapter2.kt → ...oter_example/ui/main/MainPager2Adapter.kt
@@ -6,11 +6,8 @@ import androidx.databinding.DataBindingUtil
 import androidx.databinding.ViewDataBinding
 import androidx.recyclerview.widget.RecyclerView
 import com.example.recyclerview_sticky_headerfooter_example.R
-import com.example.recyclerview_sticky_headerfooter_example.databinding.FragmentMainTabFirstBinding
-import com.example.recyclerview_sticky_headerfooter_example.databinding.FragmentMainTabSecondBinding
-import com.example.recyclerview_sticky_headerfooter_example.databinding.FragmentMainTabThirdBinding
 
-public class SectionsPagerAdapter2() : RecyclerView.Adapter<SectionsPagerAdapter2.ItemViewHolder>() {
+public class MainPager2Adapter() : RecyclerView.Adapter<MainPager2Adapter.ItemViewHolder>() {
 
     companion object {
         const val itemSize = 3

diff --git a/...java/com/example/recyclerview_sticky_headerfooter_example/ui/main/MainTabFirstFragment.kt b/...java/com/example/recyclerview_sticky_headerfooter_example/ui/main/MainTabFirstFragment.kt
@@ -0,0 +1,39 @@
+package com.example.recyclerview_sticky_headerfooter_example.ui.main
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.annotation.LayoutRes
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.Observer
+import androidx.lifecycle.ViewModelProvider
+import com.example.recyclerview_sticky_headerfooter_example.BindingFragment
+import com.example.recyclerview_sticky_headerfooter_example.R
+import com.example.recyclerview_sticky_headerfooter_example.databinding.FragmentMainBinding
+import com.example.recyclerview_sticky_headerfooter_example.databinding.FragmentMainTabFirstBinding
+import org.koin.androidx.viewmodel.ext.android.getViewModel
+
+class MainTabFirstFragment : BindingFragment<FragmentMainTabFirstBinding>() {
+
+    companion object {
+        val TAG: String = MainTabFirstFragment::class.java.simpleName
+        fun newInstance() = MainTabFirstFragment()
+    }
+
+    private lateinit var mVM: MainTabViewModel
+
+    @LayoutRes
+    override fun getLayoutResId() = R.layout.fragment_main_tab_first
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        binding.vm = getViewModel()
+        binding.lifecycleOwner = viewLifecycleOwner
+
+        binding.vm?.let {
+            mVM = it
+        }
+    }
+}
diff --git a/...ava/com/example/recyclerview_sticky_headerfooter_example/ui/main/MainTabSecondFragment.kt b/...ava/com/example/recyclerview_sticky_headerfooter_example/ui/main/MainTabSecondFragment.kt
@@ -0,0 +1,39 @@
+package com.example.recyclerview_sticky_headerfooter_example.ui.main
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.annotation.LayoutRes
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.Observer
+import androidx.lifecycle.ViewModelProvider
+import com.example.recyclerview_sticky_headerfooter_example.BindingFragment
+import com.example.recyclerview_sticky_headerfooter_example.R
+import com.example.recyclerview_sticky_headerfooter_example.databinding.FragmentMainTabFirstBinding
+import com.example.recyclerview_sticky_headerfooter_example.databinding.FragmentMainTabSecondBinding
+import org.koin.androidx.viewmodel.ext.android.getViewModel
+
+class MainTabSecondFragment : BindingFragment<FragmentMainTabSecondBinding>()  {
+
+    companion object {
+        val TAG: String = MainTabSecondFragment::class.java.simpleName
+        fun newInstance() = MainTabSecondFragment()
+    }
+
+    private lateinit var mVM: MainTabViewModel
+
+    @LayoutRes
+    override fun getLayoutResId() = R.layout.fragment_main_tab_second
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        binding.vm = getViewModel()
+        binding.lifecycleOwner = viewLifecycleOwner
+
+        binding.vm?.let {
+            mVM = it
+        }
+    }
+}