<1.xml布局文件>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    >    <DatePicker        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/data"/></LinearLayout><2.源代碼>
public class MainActivity extends AppCompatActivity {    PRivate DatePicker datePicker;    private int year,month,date;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //實例化控件        datePicker= (DatePicker) findViewById(R.id.data);        //獲取當前年分        year=Calendar.getInstance().get(Calendar.YEAR);        //獲取當前月分        month=Calendar.getInstance().get(Calendar.MONTH);        //獲取當前日期        date=Calendar.getInstance().get(Calendar.DAY_OF_MONTH);        datePicker.init(year, month, date, new DatePicker.OnDateChangedListener() {            @Override            public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {                //月份要加1，相信大家都知道，就不細說了                Toast.makeText(MainActivity.this,year+"年"+(monthOfYear+1)+"月"+dayOfMonth+"日",Toast.LENGTH_SHORT).show();            }        });    }}