使用“import android.app.AlertDialog;”导入，然后写入

    String[] items = {"...","...."};             
    AlertDialog.Builder build = new AlertDialog.Builder(context);
    build.setItems(items, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            //do stuff....
        }
    }).create().show();

final CharSequence[] items = {"A", "B", "C"};

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Make your selection");
builder.setItems(items, new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog, int item) {
        // Do something with the selection
        mDoneButton.setText(items[item]);
    }
});
AlertDialog alert = builder.create();
alert.show();

作为初学者，我建议你登录http://www.mkyong.com/android/android-custom-dialog-example/

我将简要介绍它的基本功能

为对话框和主活动创建一个XML文件 在主活动中所需的位置创建一个android类Dialog对象 根据XML文件添加自定义样式和文本 调用dialog.show()方法。

使用“import android.app.AlertDialog;”导入，然后写入

    String[] items = {"...","...."};             
    AlertDialog.Builder build = new AlertDialog.Builder(context);
    build.setItems(items, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            //do stuff....
        }
    }).create().show();

你可以用这样的Alert Dialog创建一个简单的Array。

 val sexArray = arrayOf("Male", "Female")
 val selectedPosition = 0

 AlertDialog.Builder(requireContext())
    .setSingleChoiceItems(sexArray, 0) { dialog, position ->
        val selectedSex = sexArray[position]
    }.show()

您可以使用自定义对话框。

自定义对话框布局。list.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
    <ListView
        android:id="@+id/lv"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"/>
</LinearLayout>

在你的活动中

Dialog dialog = new Dialog(Activity.this);
       dialog.setContentView(R.layout.list)

ListView lv = (ListView ) dialog.findViewById(R.id.lv);
dialog.setCancelable(true);
dialog.setTitle("ListView");
dialog.show();

编辑:

使用alertdialog

String names[] ={"A","B","C","D"};
AlertDialog.Builder alertDialog = new AlertDialog.Builder(MainActivity.this);
LayoutInflater inflater = getLayoutInflater();
View convertView = (View) inflater.inflate(R.layout.custom, null);
alertDialog.setView(convertView);
alertDialog.setTitle("List");
ListView lv = (ListView) convertView.findViewById(R.id.lv);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,names);
lv.setAdapter(adapter);
alertDialog.show();

custom.xml

<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/listView1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

</ListView>

Snap