android日期可输入,android中动态输入日期与时间

/* import程序略*/

import android.widget.DatePicker;

import android.widget.TimePicker;

public class EX04_15 extends Activity

{

/*声明日期及时间变量*/

private int mYear;

private int mMonth;

private int mDay;

private int mHour;

private int mMinute;

/*声明对象变量*/

TextView tv;

TimePicker tp;

DatePicker dp;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState)

{

/*取得目前日期与时间*/

Calendar c=Calendar.getInstance();

mYear=c.get(Calendar.YEAR);

mMonth=c.get(Calendar.MONTH);

mDay=c.get(Calendar.DAY_OF_MONTH);

mHour=c.get(Calendar.HOUR_OF_DAY);

mMinute=c.get(Calendar.MINUTE);

super.onCreate(savedInstanceState);

/*加载main.xml Layout */

setContentView(R.layout.main);

/*取得TextView对象，并调用updateDisplay()

来设置显示的初始日期时间*/

tv= (TextView) findViewById(R.id.showTime);

updateDisplay();

/*取得DatePicker对象，以init()

设置初始值与onDateChangeListener() */

dp=(DatePicker)findViewById(R.id.dPicker);

dp.init(mYear,mMonth,mDay,new DatePicker.OnDateChangedListener()

{

@Override

public void onDateChanged(DatePicker view,int year,

int monthOfYear,int dayOfMonth)

{

mYear=year;

mMonth= monthOfYear;

mDay=dayOfMonth;

/*调用updateDisplay()来改变显示日期*/

updateDisplay();

}

});

/*取得TimePicker对象，并设置为24小时制显示*/

tp=(TimePicker)findViewById(R.id.tPicker);

tp.setIs24HourView(true);

/*setOnTimeChangedListener，并重写onTimeChanged event*/

tp.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener()

{

@Override

public void onTimeChanged(TimePicker view,

int hourOfDay,

int minute)

{

mHour=hourOfDay;

mMinute=minute;

/*调用updateDisplay()来改变显示时间*/

updateDisplay();

}

});

}

/*设置显示日期时间的方法*/

private void updateDisplay()

{

tv.setText(

new StringBuilder().append(mYear).append("/")

.append(format(mMonth + 1)).append("/")

.append(format(mDay)).append("")

.append(format(mHour)).append(":")

.append(format(mMinute))

);

}

/*日期时间显示两位数的方法*/

private String format(int x)

{

String s=""+x;

if(s.length()==1) s="0"+s;

return s;

}

}