回答編集履歴
5
修正
test
CHANGED
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@@ -7,6 +7,7 @@
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7
7
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8
8
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----
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9
9
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10
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+
MainActivity.kt
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10
11
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```kotlin
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11
12
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import androidx.appcompat.app.AppCompatActivity
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12
13
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import android.os.Bundle
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@@ -63,23 +64,13 @@
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63
64
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res/layout/activity_main.xml
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64
65
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```xml
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65
66
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<?xml version="1.0" encoding="utf-8"?>
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66
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-
<and
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67
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+
<ExpandableListView
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67
68
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xmlns:android="http://schemas.android.com/apk/res/android"
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68
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-
xmlns:app="http://schemas.android.com/apk/res-auto"
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69
69
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xmlns:tools="http://schemas.android.com/tools"
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70
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+
tools:context=".MainActivity"
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71
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+
android:id="@+id/exList"
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70
72
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android:layout_width="match_parent"
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71
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-
android:layout_height="match_parent"
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73
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+
android:layout_height="match_parent" />
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72
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-
tools:context=".MainActivity">
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73
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-
<ExpandableListView
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74
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-
android:id="@+id/exList"
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75
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-
android:layout_width="0dp"
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76
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-
android:layout_height="0dp"
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77
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-
android:text="Hello World!"
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78
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-
app:layout_constraintBottom_toBottomOf="parent"
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79
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-
app:layout_constraintEnd_toEndOf="parent"
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80
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-
app:layout_constraintStart_toStartOf="parent"
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81
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-
app:layout_constraintTop_toTopOf="parent" />
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82
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-
</androidx.constraintlayout.widget.ConstraintLayout>
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83
74
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```
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84
75
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res/layout/test1.xml
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85
76
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```xml
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4
コード追加
test
CHANGED
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@@ -4,3 +4,101 @@
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4
4
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[公式ドキュメント](https://developer.android.com/reference/android/widget/ExpandableListAdapter)に真っ先に
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5
5
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>An adapter that links a [ExpandableListView](https://developer.android.com/reference/android/widget/ExpandableListView) with the underlying data.
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6
6
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と書いてあります。
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7
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+
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8
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+
----
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9
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+
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10
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+
```kotlin
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11
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+
import androidx.appcompat.app.AppCompatActivity
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12
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+
import android.os.Bundle
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13
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+
import android.view.LayoutInflater
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14
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+
import android.view.View
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15
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+
import android.view.ViewGroup
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16
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+
import android.widget.BaseExpandableListAdapter
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17
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+
import android.widget.ExpandableListView
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18
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+
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19
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+
class MainActivity : AppCompatActivity() {
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20
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+
override fun onCreate(savedInstanceState: Bundle?) {
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21
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+
super.onCreate(savedInstanceState)
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22
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+
setContentView(R.layout.activity_main)
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23
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+
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24
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+
var exList = findViewById<ExpandableListView>(R.id.exList)
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25
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+
exList.setAdapter(ExListAdapter())
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26
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+
}
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27
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+
}
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28
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+
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29
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+
class ExListAdapter : BaseExpandableListAdapter() {
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30
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+
override fun getGroupCount(): Int = 1
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31
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+
override fun getGroupId(groupPosition: Int): Long = 0
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32
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+
override fun getGroup(groupPosition: Int): Any = ""
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33
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+
override fun getGroupView(groupPosition: Int,
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34
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+
isExpanded: Boolean,
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35
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+
convertView: View?,
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36
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+
parent: ViewGroup): View {
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37
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var view = convertView
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38
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+
if(view == null) {
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39
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view = LayoutInflater.from(parent.context).inflate(R.layout.test1, parent, false)
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40
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+
}
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41
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return view!!
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42
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+
}
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43
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+
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44
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+
override fun getChildrenCount(groupPosition: Int): Int = 1
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45
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+
override fun getChild(groupPosition: Int, childPosition: Int): Any = ""
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46
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+
override fun getChildId(groupPosition: Int, childPosition: Int): Long = 0
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47
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+
override fun getChildView(groupPosition: Int,
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48
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+
childPosition: Int,
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49
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+
isLastChild: Boolean,
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50
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+
convertView: View?,
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51
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+
parent: ViewGroup): View {
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52
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var view = convertView
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53
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if(view == null) {
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54
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view = LayoutInflater.from(parent.context).inflate(R.layout.test2, parent, false)
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55
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+
}
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56
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+
return view!!
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57
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+
}
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58
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+
override fun isChildSelectable(groupPosition: Int, childPosition: Int): Boolean = false
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59
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+
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60
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+
override fun hasStableIds(): Boolean = true
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61
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+
}
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62
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+
```
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63
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+
res/layout/activity_main.xml
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64
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+
```xml
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65
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+
<?xml version="1.0" encoding="utf-8"?>
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66
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+
<androidx.constraintlayout.widget.ConstraintLayout
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67
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+
xmlns:android="http://schemas.android.com/apk/res/android"
|
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68
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+
xmlns:app="http://schemas.android.com/apk/res-auto"
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69
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+
xmlns:tools="http://schemas.android.com/tools"
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70
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+
android:layout_width="match_parent"
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71
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+
android:layout_height="match_parent"
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72
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+
tools:context=".MainActivity">
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73
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+
<ExpandableListView
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|
74
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+
android:id="@+id/exList"
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|
75
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+
android:layout_width="0dp"
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76
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+
android:layout_height="0dp"
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77
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+
android:text="Hello World!"
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78
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+
app:layout_constraintBottom_toBottomOf="parent"
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79
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+
app:layout_constraintEnd_toEndOf="parent"
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80
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+
app:layout_constraintStart_toStartOf="parent"
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81
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+
app:layout_constraintTop_toTopOf="parent" />
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82
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+
</androidx.constraintlayout.widget.ConstraintLayout>
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|
83
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+
```
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84
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+
res/layout/test1.xml
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|
85
|
+
```xml
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|
86
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+
<?xml version="1.0" encoding="utf-8"?>
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|
87
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+
<TextView
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88
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+
xmlns:android="http://schemas.android.com/apk/res/android"
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89
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+
android:layout_width="match_parent"
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90
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+
android:layout_height="match_parent"
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91
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+
android:text="Text 1"
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92
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+
android:paddingStart="30dp"/>
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93
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+
```
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94
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+
res/layout/test2.xml
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|
95
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+
```xml
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|
96
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+
<?xml version="1.0" encoding="utf-8"?>
|
|
97
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+
<TextView
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|
98
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+
xmlns:android="http://schemas.android.com/apk/res/android"
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|
99
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+
android:layout_width="match_parent"
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100
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+
android:layout_height="match_parent"
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101
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+
android:text="Text 2"
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102
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+
android:paddingStart="35dp"/>
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103
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+
```
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104
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+
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3
追加
test
CHANGED
|
@@ -1,2 +1,6 @@
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1
1
|
ExpandableListAdapter なのですから、 ExpandableListView で使うのではないでしょうか。
|
|
2
|
+
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2
3
|
なぜ ExpandableListAdapter に辿り着いて ExpandableListView に辿り着かないのかが不思議な感じがしますが。
|
|
4
|
+
[公式ドキュメント](https://developer.android.com/reference/android/widget/ExpandableListAdapter)に真っ先に
|
|
5
|
+
>An adapter that links a [ExpandableListView](https://developer.android.com/reference/android/widget/ExpandableListView) with the underlying data.
|
|
6
|
+
と書いてあります。
|
2
修正
test
CHANGED
|
@@ -1,2 +1,2 @@
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1
|
-
ExpandableListAdapter なのですから、 ExpandableList で使うのではないでしょうか。
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|
1
|
+
ExpandableListAdapter なのですから、 ExpandableListView で使うのではないでしょうか。
|
|
2
|
-
なぜ ExpandableListAdapter に辿り着いて ExpandableList に辿り着かないのかが不思議な感じがしますが。
|
|
2
|
+
なぜ ExpandableListAdapter に辿り着いて ExpandableListView に辿り着かないのかが不思議な感じがしますが。
|
1
追加
test
CHANGED
|
@@ -1 +1,2 @@
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1
1
|
ExpandableListAdapter なのですから、 ExpandableList で使うのではないでしょうか。
|
|
2
|
+
なぜ ExpandableListAdapter に辿り着いて ExpandableList に辿り着かないのかが不思議な感じがしますが。
|