質問編集履歴
1
画像でなくコードを使って説明した
title
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File without changes
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body
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@@ -6,16 +6,71 @@
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6
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一体何が原因なのでしょうか。
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8
8
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9
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### 問題のコード
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10
9
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10
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### 該当するソースコード
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11
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-
MainFragment.kt
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11
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```MainFragment.kt
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12
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-
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12
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package com.example.todo
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14
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import android.os.Bundle
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15
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import android.view.View
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16
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import androidx.fragment.app.Fragment
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import androidx.fragment.app.FragmentContainer
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18
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import androidx.fragment.app.viewModels
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import androidx.navigation.Navigation.findNavController
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import androidx.navigation.fragment.findNavController
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import com.example.todo.databinding.MainFragmentBinding
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import dagger.hilt.android.AndroidEntryPoint
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23
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15
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main_fragment.xml
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16
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-
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24
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@AndroidEntryPoint
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class MainFragment: Fragment(R.layout.main_fragment) {
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private val vm: MainViewMotel by viewModels()
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// ここから下を追加
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private var _binding: MainFragmentBinding? = null
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private val binding: MainFragmentBinding get() = _binding!!
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override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
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super.onViewCreated(view, savedInstanceState)
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this._binding = MainFragmentBinding.bind(view)
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36
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binding.fab.setOnClickListener {
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findNavController().navigate(R.id.action_mainFragment2_to_createtodoFragment3)
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}
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40
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}
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override fun onDestroyView() {
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super.onDestroyView()
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this._binding = null
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}
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}
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48
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```
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50
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51
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```main_fragment.xml
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<?xml version="1.0" encoding="utf-8"?>
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53
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<androidx.constraintlayout.widget.ConstraintLayout
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xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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xmlns:tools="http://schemas.android.com/tools"
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android:layout_width="match_parent"
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android:layout_height="match_parent">
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60
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<com.google.android.material.floatingactionbutton.FloatingActionButton
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android:id="@+id/fab"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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64
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android:layout_marginEnd="16dp"
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android:layout_marginRight="16dp"
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android:layout_marginBottom="16dp"
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android:clickable="true"
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app:layout_constraintBottom_toBottomOf="parent"
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app:layout_constraintEnd_toEndOf="parent"
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app:srcCompat="@drawable/ic_baseline_add_24"
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71
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tools:ignore="VectorDrawableCompat" />
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72
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</androidx.constraintlayout.widget.ConstraintLayout>
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73
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```
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74
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75
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仮想デバイス
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19
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-
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20
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-
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21
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-
ちなみにM1Macではないです。
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