日期對話框（Date Picker Dialog） 是一種常見的用戶界面組件，用於讓用戶選擇特定的日期。

練習使用

public class DatePickerActivity extends AppCompatActivity implements View.OnClickListener, DatePickerDialog.OnDateSetListener {

    private DatePicker dp_choose;
    private TextView tv_time;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_date_picker);
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
            return insets;
        });

        findViewById(R.id.btn_ok).setOnClickListener(this);
        findViewById(R.id.btn_date).setOnClickListener(this);
        dp_choose = findViewById(R.id.dp_choose);
        tv_time = findViewById(R.id.tv_time);
    }

    @Override
    public void onClick(View view) {
        if(view.getId() == R.id.btn_ok){
            String desc = String.format("您的日期是%d年%d月%d日",dp_choose.getYear(),dp_choose.getMonth()+1,dp_choose.getDayOfMonth());
            tv_time.setText(desc);
        }else if(view.getId() == R.id.btn_date){
            Calendar calendar = Calendar.getInstance();
            calendar.get(Calendar.YEAR);
            calendar.get(Calendar.MONTH);
            calendar.get(Calendar.DAY_OF_MONTH);
            DatePickerDialog dialog = new DatePickerDialog(this,this,2024,8,11);
            dialog.show();
        }
    }

    @Override
    public void onDateSet(DatePicker datePicker, int i, int i1, int i2) {
        String desc = String.format("您的日期是%d年%d月%d日",i,i1+1,i2);
        tv_time.setText(desc);
    }
}