我如何在android中设置自定义日期

import androidx.appcompat.app.AppCompatActivity;
import android.app.DatePickerDialog;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;

    android:id="@+id/button_date"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="选择日期" /><TextView
    android:id="@+id/textview_date"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="" />

public class MainActivity extends AppCompatActivity {

    private Button buttonDate;
    private TextView textViewDate;

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

        buttonDate = findViewById(R.id.button_date);
        textViewDate = findViewById(R.id.textview_date);

        buttonDate.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showDatePickerDialog();
            }
        });
    }

    private void showDatePickerDialog() {
        Calendar calendar = Calendar.getInstance();
        int year = calendar.get(Calendar.YEAR);
        int month = calendar.get(Calendar.MONTH);
        int day = calendar.get(Calendar.DAY_OF_MONTH);

        DatePickerDialog datePickerDialog = new DatePickerDialog(MainActivity.this, new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
                textViewDate.setText(String.format(Locale.getDefault(), "%d-%02d-%02d", year, month + 1, dayOfMonth));
            }
        }, year, month, day);

        datePickerDialog.show();
    }
}