androidDialogSnackbar

DialogAndSnackbarActivity.java

package com.example.testapplication.dialogAndSnackbar;

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;

import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;

import com.google.android.material.snackbar.Snackbar;

public class DialogAndSnackbarActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_dialog_and_snackbar);

        String[] strings = new String[]{"hoge", "fuga", "piyo"};

        final View v = this.getLayoutInflater().inflate(R.layout.dialog_button_close, null);
        AlertDialog dialog = new AlertDialog.Builder(this)
                .setTitle("Dialog with Snackbar")
                .setSingleChoiceItems(strings, -1, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {
                        Snackbar.make(v, strings[i]+" was selected", Snackbar.LENGTH_SHORT).show();
                    }
                })
                .setView(v)
                .create();
        v.findViewById(R.id.dialog_button).setOnClickListener(view -> dialog.dismiss());
        dialog.show();
    }
}

layout#activity_dialog_and_snackbar.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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=".dialogAndSnackbar.DialogAndSnackbarActivity"
    android:id="@+id/coordinator>

</androidx.coordinatorlayout.widget.CoordinatorLayout>

layout#dialog_button_close.xml

<?xml version="1.0" encoding="utf-8"?>

<androidx.coordinatorlayout.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="start">

    <Button
        android:id="@+id/dialog_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="#00FFFFFF"
        android:text="閉じる"
        android:textColor="@color/design_default_color_primary"/>

</androidx.coordinatorlayout.widget.CoordinatorLayout>