ANDROID_MARS学习笔记_S02_002_Date\TimePicker

<RelativeLayout 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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.s02_e02_dateandtimepickerdialog.MainActivity" >

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="pick_date"
android:onClick="showDatePickerDialog" />

</RelativeLayout>

package com.example.s02_e02_dateandtimepickerdialog;

import java.util.Calendar;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.os.Bundle;
import android.view.View;
import android.widget.DatePicker;

@SuppressLint("NewApi")
public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

public void showDatePickerDialog(View v) {
DialogFragment newFragment = new DatePickerFragment();
newFragment.show(getFragmentManager(), "datePicker");
}

@SuppressLint("NewApi")
public static class DatePickerFragment extends DialogFragment implements
DatePickerDialog.OnDateSetListener {

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current date as the default date in the picker
final Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
int day = c.get(Calendar.DAY_OF_MONTH);

// Create a new instance of DatePickerDialog and return it
return new DatePickerDialog(getActivity(), this, year, month, day);
}

public void onDateSet(DatePicker view, int year, int month, int day) {
// Do something with the date chosen by the user
}
}

}

<?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:id="@+id/textViewId"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button
android:id="@+id/showDatePickerButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="显示DatePicker"
/>

</LinearLayout>

package mars.dateandtime;

import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;

public class MainActivity extends Activity {
/** Called when the activity is first created. */
private Button showDatePickerButton = null;
//该常量用于标识DatePickerDialog
private static final int DATE_PICKER_ID = 1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
showDatePickerButton = (Button) findViewById(R.id.showDatePickerButton);
showDatePickerButton.setOnClickListener(new ButtonListener());
}

private class ButtonListener implements OnClickListener {

@Override
public void onClick(View v) {
//此方法用于显示DatePickerDialog
showDialog(DATE_PICKER_ID);
}

}
//监听器，用户监听用户点下DatePikerDialog的set按钮时，所设置的年月日
DatePickerDialog.OnDateSetListener onDateSetListener = new DatePickerDialog.OnDateSetListener() {

@Override
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
System.out.println(year + "-" + monthOfYear + "-" + dayOfMonth);
}
};

@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_PICKER_ID:
return new DatePickerDialog(this, onDateSetListener, 2010, 11, 25);
}
return null;
}

}