Fix Android Warnings

android/app/src/main/java/com/metallic/chiaki/common/SerializedSettings.kt

@@ -150,7 +150,7 @@ fun exportAndShareAllSettings(activity: Activity): Disposable
 			file
 		}
 		.observeOn(AndroidSchedulers.mainThread())
-		.subscribe { it: File ->
+		.subscribe { _ ->
 			val uri = FileProvider.getUriForFile(activity, fileProviderAuthority, file)
 			Intent(Intent.ACTION_SEND).also {
 				it.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)

android/app/src/main/java/com/metallic/chiaki/main/MainActivity.kt

@@ -25,7 +25,7 @@ import android.view.MenuItem
 import android.view.View
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.Observer
-import androidx.lifecycle.ViewModelProviders
+import androidx.lifecycle.ViewModelProvider
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.metallic.chiaki.R
@@ -67,8 +67,7 @@ class MainActivity : AppCompatActivity()
 		registerButton.setOnClickListener { showRegistration() }
 		registerLabelButton.setOnClickListener { showRegistration() }
 
-		viewModel = ViewModelProviders
-			.of(this, viewModelFactory { MainViewModel(getDatabase(this), Preferences(this)) })
+		viewModel = ViewModelProvider(this, viewModelFactory { MainViewModel(getDatabase(this), Preferences(this)) })
 			.get(MainViewModel::class.java)
 
 		val recyclerViewAdapter = DisplayHostRecyclerViewAdapter(this::hostTriggered, this::wakeupHost, this::editHost, this::deleteHost)

android/app/src/main/java/com/metallic/chiaki/manualconsole/EditManualConsoleActivity.kt

@@ -25,7 +25,7 @@ import android.widget.AdapterView
 import android.widget.ArrayAdapter
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.Observer
-import androidx.lifecycle.ViewModelProviders
+import androidx.lifecycle.ViewModelProvider
 import com.metallic.chiaki.R
 import com.metallic.chiaki.common.RegisteredHost
 import com.metallic.chiaki.common.ext.RevealActivity
@@ -57,8 +57,7 @@ class EditManualConsoleActivity: AppCompatActivity(), RevealActivity
 		setContentView(R.layout.activity_edit_manual)
 		handleReveal()
 
-		viewModel = ViewModelProviders
-			.of(this, viewModelFactory {
+		viewModel = ViewModelProvider(this, viewModelFactory {
 				EditManualConsoleViewModel(getDatabase(this),
 					if(intent.hasExtra(EXTRA_MANUAL_HOST_ID))
 						intent.getLongExtra(EXTRA_MANUAL_HOST_ID, 0)

android/app/src/main/java/com/metallic/chiaki/regist/RegistActivity.kt

@@ -24,7 +24,7 @@ import android.view.View
 import android.view.Window
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.Observer
-import androidx.lifecycle.ViewModelProviders
+import androidx.lifecycle.ViewModelProvider
 import com.metallic.chiaki.R
 import com.metallic.chiaki.common.ext.RevealActivity
 import com.metallic.chiaki.lib.RegistInfo
@@ -56,7 +56,7 @@ class RegistActivity: AppCompatActivity(), RevealActivity
 		setContentView(R.layout.activity_regist)
 		handleReveal()
 
-		viewModel = ViewModelProviders.of(this).get(RegistViewModel::class.java)
+		viewModel = ViewModelProvider(this).get(RegistViewModel::class.java)
 
 		hostEditText.setText(intent.getStringExtra(EXTRA_HOST) ?: "255.255.255.255")
 		broadcastCheckBox.isChecked = intent.getBooleanExtra(EXTRA_BROADCAST, true)

android/app/src/main/java/com/metallic/chiaki/regist/RegistExecuteActivity.kt

@@ -25,7 +25,7 @@ import android.view.View
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.Observer
-import androidx.lifecycle.ViewModelProviders
+import androidx.lifecycle.ViewModelProvider
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.metallic.chiaki.R
 import com.metallic.chiaki.common.MacAddress
@@ -52,8 +52,7 @@ class RegistExecuteActivity: AppCompatActivity()
 		super.onCreate(savedInstanceState)
 		setContentView(R.layout.activity_regist_execute)
 
-		viewModel = ViewModelProviders
-			.of(this, viewModelFactory { RegistExecuteViewModel(getDatabase(this)) })
+		viewModel = ViewModelProvider(this, viewModelFactory { RegistExecuteViewModel(getDatabase(this)) })
 			.get(RegistExecuteViewModel::class.java)
 
 		logTextView.setHorizontallyScrolling(true)

android/app/src/main/java/com/metallic/chiaki/settings/SettingsFragment.kt

@@ -18,24 +18,21 @@
 package com.metallic.chiaki.settings
 
 import android.app.Activity
-import android.content.ClipData
 import android.content.Intent
 import android.content.res.Resources
 import android.os.Bundle
 import android.text.InputType
-import androidx.core.content.FileProvider
 import androidx.lifecycle.Observer
-import androidx.lifecycle.ViewModelProviders
+import androidx.lifecycle.ViewModelProvider
 import androidx.preference.*
 import com.metallic.chiaki.R
-import com.metallic.chiaki.common.*
-import com.metallic.chiaki.common.ext.toLiveData
+import com.metallic.chiaki.common.Preferences
+import com.metallic.chiaki.common.exportAndShareAllSettings
 import com.metallic.chiaki.common.ext.viewModelFactory
-import io.reactivex.android.schedulers.AndroidSchedulers
+import com.metallic.chiaki.common.getDatabase
+import com.metallic.chiaki.common.importSettingsFromUri
 import io.reactivex.disposables.CompositeDisposable
 import io.reactivex.rxkotlin.addTo
-import io.reactivex.schedulers.Schedulers
-import java.io.File
 
 class DataStore(val preferences: Preferences): PreferenceDataStore()
 {
@@ -96,8 +93,7 @@ class SettingsFragment: PreferenceFragmentCompat(), TitleFragment
 	{
 		val context = context ?: return
 
-		val viewModel = ViewModelProviders
-			.of(this, viewModelFactory { SettingsViewModel(getDatabase(context), Preferences(context)) })
+		val viewModel = ViewModelProvider(this, viewModelFactory { SettingsViewModel(getDatabase(context), Preferences(context)) })
 			.get(SettingsViewModel::class.java)
 
 		val preferences = viewModel.preferences

android/app/src/main/java/com/metallic/chiaki/settings/SettingsLogsFragment.kt

@@ -27,7 +27,7 @@ import android.view.ViewGroup
 import androidx.appcompat.app.AppCompatDialogFragment
 import androidx.core.content.FileProvider
 import androidx.lifecycle.Observer
-import androidx.lifecycle.ViewModelProviders
+import androidx.lifecycle.ViewModelProvider
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -49,15 +49,14 @@ class SettingsLogsFragment: AppCompatDialogFragment(), TitleFragment
 	{
 		val context = context!!
 
-		viewModel = ViewModelProviders
-			.of(this, viewModelFactory { SettingsLogsViewModel(LogManager(context)) })
+		viewModel = ViewModelProvider(this, viewModelFactory { SettingsLogsViewModel(LogManager(context)) })
 			.get(SettingsLogsViewModel::class.java)
 
 		val adapter = SettingsLogsAdapter()
 		logsRecyclerView.layoutManager = LinearLayoutManager(context)
 		logsRecyclerView.adapter = adapter
 		adapter.shareCallback = this::shareLogFile
-		viewModel.sessionLogs.observe(this, Observer {
+		viewModel.sessionLogs.observe(viewLifecycleOwner, Observer {
 			adapter.logFiles = it
 			emptyInfoGroup.visibility = if(it.isEmpty()) View.VISIBLE else View.GONE
 		})

android/app/src/main/java/com/metallic/chiaki/settings/SettingsRegisteredHostsFragment.kt

@@ -26,7 +26,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.app.AppCompatDialogFragment
 import androidx.lifecycle.Observer
-import androidx.lifecycle.ViewModelProviders
+import androidx.lifecycle.ViewModelProvider
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -47,8 +47,7 @@ class SettingsRegisteredHostsFragment: AppCompatDialogFragment(), TitleFragment
 
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?)
 	{
-		viewModel = ViewModelProviders
-			.of(this, viewModelFactory { SettingsRegisteredHostsViewModel(getDatabase(context!!)) })
+		viewModel = ViewModelProvider(this, viewModelFactory { SettingsRegisteredHostsViewModel(getDatabase(context!!)) })
 			.get(SettingsRegisteredHostsViewModel::class.java)
 
 		val adapter = SettingsRegisteredHostsAdapter()

android/app/src/main/java/com/metallic/chiaki/stream/StreamActivity.kt

@@ -72,7 +72,7 @@ class StreamActivity : AppCompatActivity(), View.OnSystemUiVisibilityChangeListe
 			return
 		}
 
-		viewModel = ViewModelProviders.of(this, viewModelFactory {
+		viewModel = ViewModelProvider(this, viewModelFactory {
 			StreamViewModel(Preferences(this), LogManager(this), connectInfo)
 		})[StreamViewModel::class.java]
 
@@ -101,7 +101,7 @@ class StreamActivity : AppCompatActivity(), View.OnSystemUiVisibilityChangeListe
 			showOverlay()
 		}
 
-		displayModeToggle.addOnButtonCheckedListener {group, checkedId, _ ->
+		displayModeToggle.addOnButtonCheckedListener { _, checkedId, _ ->
 			// following 'if' is a workaround until selectionRequired for MaterialButtonToggleGroup
 			// comes out of alpha.
 			// See https://stackoverflow.com/questions/56164004/required-single-selection-on-materialbuttontogglegroup