質問編集履歴
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ソースコードを張りました
test
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test
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@@ -33,8 +33,59 @@
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### 該当のソースコード
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```
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```kotlin
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/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.wordsapp
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import android.os.Bundle
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import android.view.Menu
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import android.view.MenuItem
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import androidx.appcompat.app.AppCompatActivity
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import androidx.core.content.ContextCompat
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import androidx.navigation.NavController
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import androidx.navigation.fragment.NavHostFragment
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import androidx.navigation.ui.setupActionBarWithNavController
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import androidx.recyclerview.widget.GridLayoutManager
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import androidx.recyclerview.widget.LinearLayoutManager
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import androidx.recyclerview.widget.RecyclerView
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import com.example.wordsapp.databinding.ActivityMainBinding
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66
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/**
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* Main Activity and entry point for the app. Displays a RecyclerView of letters.
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*/
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class MainActivity : AppCompatActivity() {
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private lateinit var navController: NavController
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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val navHostFragment = supportFragmentManager
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.findFragmentById(R.id.nav_host_fragment) as NavHostFragment
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navController = navHostFragment.navController
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setupActionBarWithNavController(navController)
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}
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override fun onSupportNavigateUp(): Boolean {
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return navController.navigateUp() || super.onSupportNavigateUp()
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}
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}
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```
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### 試したこと
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