如何在android studio中正确显示日期选择器对话框？

import android.app.DatePickerDialog;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;

import androidx.appcompat.app.AppCompatActivity;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity {

    private EditText dateEditText;

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

        dateEditText = findViewById(R.id.dateEditText);
        Button datePickerButton = findViewById(R.id.datePickerButton);

        datePickerButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 获取当前日期
                Calendar calendar = Calendar.getInstance();
                int year = calendar.get(Calendar.YEAR);
                int month = calendar.get(Calendar.MONTH);
                int day = calendar.get(Calendar.DAY_OF_MONTH);

                // 创建日期选择器对话框实例
                DatePickerDialog datePickerDialog = new DatePickerDialog(MainActivity.this,
                        new DatePickerDialog.OnDateSetListener() {
                            @Override
                            public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
                                // 在选择日期后更新EditText的文本
                                String selectedDate = year + "-" + (month + 1) + "-" + dayOfMonth;
                                dateEditText.setText(selectedDate);
                            }
                        }, year, month, day);

                // 显示日期选择器对话框
                datePickerDialog.show();
            }
        });
    }
}