1 佈局文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="" />
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent" android:layout_height="wrap_content">
<EditText android:id="@+id/showDate" android:layout_width="200dip"
android:layout_height="wrap_content" />
<Button android:id="@+id/but_showDate" android:layout_width="100dip"
android:layout_height="wrap_content" android:text="選擇日期" />
</LinearLayout>
</LinearLayout>
2 Activity文件
import java.util.Calendar;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
public class MainActivity extends Activity {
private EditText showDate = null;
private Button pickDate = null;
private static final int DATE_DIALOG_ID = 1;
private static final int SHOW_DATAPICK = 0;
private int mYear;
private int mMonth;
private int mDay;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
showDate = (EditText) findViewById(R.id.showDate);
pickDate = (Button) findViewById(R.id.but_showDate);
pickDate.setOnClickListener(new DateButtonOnClickListener());
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
setDateTime();
}
private void setDateTime() {
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
updateDisplay();
}
/**
* 更新日期
*/
private void updateDisplay() {
showDate.setText(new StringBuilder().append(mYear).append(
(mMonth + 1) < 10 ? "0" + (mMonth + 1) : (mMonth + 1)).append(
(mDay < 10) ? "0" + mDay : mDay));
}
/**
* 日期控件的事件
*/
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();
}
};
/**
* 選擇日期Button的事件處理
*
* @author Raul
*
*/
class DateButtonOnClickListener implements
android.view.View.OnClickListener {
@Override
public void onClick(View v) {
Message msg = new Message();
if (pickDate.equals((Button) v)) {
msg.what = MainActivity.SHOW_DATAPICK;
}
MainActivity.this.saleHandler.sendMessage(msg);
}
}
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_DIALOG_ID:
return new DatePickerDialog(this, mDateSetListener, mYear, mMonth,
mDay);
}
return null;
}
@Override
protected void onPrepareDialog(int id, Dialog dialog) {
switch (id) {
case DATE_DIALOG_ID:
((DatePickerDialog) dialog).updateDate(mYear, mMonth, mDay);
break;
}
}
/**
* 處理日期控件的Handler
*/
Handler saleHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MainActivity.SHOW_DATAPICK:
showDialog(DATE_DIALOG_ID);
break;
}
}
};
}
