M-Miyazako
1/20/2020 - 5:57 AM

Groupieことはじめ

Groupieことはじめ

要Groupie&DataBinding

dependencies {
    implementation 'androidx.recyclerview:recyclerview:1.1.0'
    
    // groupie
    implementation 'com.xwray:groupie:2.7.2'
    implementation 'com.xwray:groupie-kotlin-android-extensions:2.7.2'
    implementation 'com.xwray:groupie-databinding:2.7.2'
}
class ListItem(private val text: String): BindableItem<ItemListBinding>() {
    override fun getLayout(): Int = R.layout.item_list

    override fun bind(viewBinding: ItemListBinding, position: Int) {
        viewBinding.text = text
    }
}
class MainFragment : Fragment() {
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? = inflater.inflate(R.layout.fragment_main, container, false)

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        val groupAdapter = GroupAdapter<GroupieViewHolder>()
        recycler_view.adapter = groupAdapter

        val items = listOf("りんご🍎", "みかん🍊", "ぶどう🍇", "すいか🍉", "もも🍑", "ばなな🍌")
        items.forEach { item ->
            groupAdapter.add(ListItem(item))
        }
    }
}
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">

    <data>
        <variable
            name="text"
            type="String" />
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="100dp">

        <TextView
            android:id="@+id/textView"
            android:text="@{text}"
            android:textSize="20sp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:layout_marginEnd="8dp"
            android:layout_marginBottom="8dp"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"
            tools:text="くだもの" />

    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainFragment">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layoutManager="LinearLayoutManager" />

</androidx.constraintlayout.widget.ConstraintLayout>