Android 日期和时间选择控件的开发
一个日期和时间选择控件的例子。来自谷歌开发文档，整合了两个小例子。
import java.util.Calendar;import android.app.Activity;import android.app.DatePickerDialog;import android.app.Dialog;import android.app.TimePickerDialog;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.DatePicker;import android.widget.TextView;import android.widget.TimePicker;public class DatePickerActivity extends Activity { private TextView mDateDisplay; private Button mPickDate; private TextView mTimeDisplay; private Button mPickTime; private int mYear; private int mMonth; private int mDay; private int mHour; private int mMinute; static final int DATE_DIALOG_ID = 0; static final int TIME_DIALOG_ID = 1; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // capture our View elements mDateDisplay = (TextView) findViewById(R.id.dateDisplay); mPickDate = (Button) findViewById(R.id.pickDate); mTimeDisplay = (TextView) findViewById(R.id.timeDisplay); mPickTime = (Button) findViewById(R.id.pickTime); // add a click listener to the button mPickDate.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { showDialog(DATE_DIALOG_ID); } }); mPickTime.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { showDialog(TIME_DIALOG_ID); } }); // get the current date final Calendar c = Calendar.getInstance(); mYear = c.get(Calendar.YEAR); mMonth = c.get(Calendar.MONTH); mDay = c.get(Calendar.DAY_OF_MONTH); // get the current time final Calendar cc = Calendar.getInstance(); mHour = cc.get(Calendar.HOUR_OF_DAY); mMinute = cc.get(Calendar.MINUTE); // display the current date (this method is below) updateDisplay(); } // updates the date in the TextView private void updateDisplay() { mDateDisplay.setText(new StringBuilder() // Month is 0 based so add 1 .append(mMonth + 1).append("-").append(mDay).append("-") .append(mYear).append(" ")); mTimeDisplay.setText(new StringBuilder().append(pad(mHour)).append(":") .append(pad(mMinute))); } private static String pad(int c) { if (c >= 10) return String.valueOf(c); else return "0" + String.valueOf(c); } // the callback received when the user "sets" the date in the dialog private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() { public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) { mYear = year; mMonth = monthOfYear; mDay = dayOfMonth; updateDisplay(); } }; // the callback received when the user "sets" the time in the dialog private TimePickerDialog.OnTimeSetListener mTimeSetListener = new TimePickerDialog.OnTimeSetListener() { public void onTimeSet(TimePicker view, int hourOfDay, int minute) { mHour = hourOfDay; mMinute = minute; updateDisplay(); } }; @Override protected Dialog onCreateDialog(int id) { switch (id) { case DATE_DIALOG_ID: return new DatePickerDialog(this, mDateSetListener, mYear, mMonth, mDay); case TIME_DIALOG_ID: return new TimePickerDialog(this, mTimeSetListener, mHour, mMinute, false); } return null; }}?