DatePicker TimePicker动态输入日期和时间

[android]代码库
import java.util.Calendar;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.DatePicker;
import android.widget.TimePicker;
 
public class DateAndTime extends Activity {
    private int mYear;
    private int mMonth;
    private int mDay;
    private int mHour;
    private int mMinute;
    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); // 载入main.xml Layout
        setContentView(R.layout.main); // 取得TextView对象，并调用updateDisplay()来设定显示的初始日期时间
        tv = (TextView) findViewById(R.id.showTime);
        updateDisplay(); // 取得DatePicker对象，以init()设定初始值与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，并设定为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();
            }
        });
    }
 
    /* 设定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;
    }
}
 
 
 
 
 
 
 
main.xml
----------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout
  android:id="@+id/layout1"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  xmlns:android="http://schemas.android.com/apk/res/android"
>
  <TextView
    android:id="@+id/mText"
    android:layout_width="270px"
    android:layout_height="40px"
    android:text="@string/str_title"
    android:textSize="18sp"
    android:layout_x="20px"
    android:layout_y="32px"
  />
  <ImageView
    android:id="@+id/mImage01"
    android:layout_width="71px"
    android:layout_height="96px"
    android:layout_x="20px"
    android:layout_y="122px"
    android:src="@drawable/p04"
  />
  <ImageView
    android:id="@+id/mImage02"
    android:layout_width="71px"
    android:layout_height="96px"
    android:layout_x="126px"
    android:layout_y="122px"
    android:src="@drawable/p04"
  />
  <ImageView
    android:id="@+id/mImage03"
    android:layout_width="71px"
    android:layout_height="96px"
    android:layout_x="232px"
    android:layout_y="122px"
    android:src="@drawable/p04"
  />
  <Button
    android:id="@+id/mButton"
    android:layout_width="118px"
    android:layout_height="wrap_content"
    android:text="@string/str_button"
    android:layout_x="100px"
    android:layout_y="302px"
  />
</AbsoluteLayout>
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