参见英文答案 > Get date from datepicker using dialogfragment 8个
我正在使用Fragments编写一个Android应用程序,在我的一个片段中,我正在使用两个选择器(Date& Time).
我用谷歌搜索并找到解决方案,通过使用点按按钮显示片段中的Dialogs,我也这样做,每当用户点击相应的按钮时显示对话框.
但我没有得到如何将对话框值设置为各自的TextView.
看到我的下面的代码,我用来通过点击按钮来显示对话框,
DatePickerDialogFragment.java：
public class DatePickerDialogFragment extends DialogFragment {
private DatePickerDialog.OnDateSetListener mDateSetListener;
public DatePickerDialogFragment() {
}
DatePickerDialogFragment(OnDateSetListener dateSetListener) {
mDateSetListener = dateSetListener;
}
@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
DatePickerDialog dpd = new DatePickerDialog(getActivity(),mDateSetListener,year,month,day);
// should not accept past dates
return dpd;
}
}
TimePickerFragment.java：
public class TimePickerFragment extends DialogFragment implements TimePickerDialog.OnTimeSetListener
{
private TimePickedListener mListener;
@Override
public Dialog onCreateDialog(Bundle savedInstanceState)
{
// use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
// create a new instance of TimePickerDialog and return it
return new TimePickerDialog(getActivity(),this,hour,minute,DateFormat.is24HourFormat(getActivity()));
}
@Override
public void onAttach(Activity activity)
{
// when the fragment is initially shown (i.e. attached to the activity),cast the activity to the callback interface type
super.onAttach(activity);
try
{
mListener = (TimePickedListener) activity;
}
catch (ClassCastException e)
{
throw new ClassCastException(activity.toString() + " must implement " + TimePickedListener.class.getName());
}
}
@Override
public void onTimeSet(TimePicker view,int hourOfDay,int minute)
{
// when the time is selected,send it to the activity via its callback interface method
Calendar c = Calendar.getInstance();
c.set(Calendar.HOUR_OF_DAY,hourOfDay);
c.set(Calendar.MINUTE,minute);
mListener.onTimePicked(c);
}
public static interface TimePickedListener
{
public void onTimePicked(Calendar time);
}
}
Fragment1.java：
public class Fragment1 extends SherlockFragment {
Button buttonDate;
Button buttonTime;
Button buttonSubmit;
TextView textDate;
TextView textTime;
Spinner spinner;
@Override
public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment1,container,false);
buttonDate = (Button) rootView.findViewById(R.id.btnDate);
buttonTime = (Button) rootView.findViewById(R.id.btnTime);
buttonSubmit = (Button) rootView.findViewById(R.id.btnSubmit);
textDate = (TextView) rootView.findViewById(R.id.txtDate);
textTime = (TextView) rootView.findViewById(R.id.txtTime);
/* // calendar class get the current instance of android phone clock
Calendar c = Calendar.getInstance();
// a formatted object for date and time
SimpleDateFormat sdfTime = new SimpleDateFormat("h:mm a");
// save date and time in string object.
String strTime = sdfTime.format(c.getTime());
textTime.setText(strTime);
SimpleDateFormat sdfDate = new SimpleDateFormat("dd-MMM-yyyy");
String strDate = sdfDate.format(c.getTime());
textDate.setText(strDate);*/
buttonTime.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
// show the time picker dialog
DialogFragment newFragment = new TimePickerFragment();
newFragment.show(getActivity().getSupportFragmentManager(),"timePicker");
}
});
buttonDate.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
DialogFragment newFragment = new DatePickerDialogFragment();
newFragment.show(getActivity().getSupportFragmentManager(),"datePicker");
}
});
spinner = (Spinner) rootView.findViewById(R.id.spinner);
// Spinner click listener
spinner.setOnItemSelectedListener((OnItemSelectedListener) getActivity());
// Spinner Drop down elements
ListMainActivity.java：
public class MainActivity extends SherlockFragmentActivity implements TimePickedListener,OnItemSelectedListener,OnDateSetListener {
// Declare Variables
Fragment1 fragmentTab1;
ListView list;
NavListAdapter adapter;
String[] title;
String[] subtitle;
int[] icon;
Fragment fragment1 = new Fragment1();
Fragment fragment2 = new Fragment2();
Fragment fragment3 = new Fragment3();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Generate title
title = new String[] { "Title Fragment 1","Title Fragment 2","Title Fragment 3" };
// Generate subtitle
subtitle = new String[] { "Subtitle Fragment 1","Subtitle Fragment 2","Subtitle Fragment 3" };
// Generate icon
icon = new int[] { R.drawable.action_about,R.drawable.action_settings,R.drawable.collections_cloud };
// Pass results to NavListAdapter Class
adapter = new NavListAdapter(this,title,subtitle,icon);
// Hide the ActionBar Title
getSupportActionBar().setDisplayShowTitleEnabled(false);
// Create the Navigation List in your ActionBar
getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
// Listen to navigation list clicks
ActionBar.OnNavigationListener navlistener = new OnNavigationListener() {
@Override
public boolean onNavigationItemSelected(int position,long itemId) {
FragmentTransaction ft = getSupportFragmentManager()
.beginTransaction();
// Locate Position
switch (position) {
case 0:
ft.replace(android.R.id.content,fragment1);
break;
case 1:
ft.replace(android.R.id.content,fragment2);
break;
case 2:
ft.replace(android.R.id.content,fragment3);
break;
}
ft.commit();
return true;
}
};
// Set the NavListAdapter into the ActionBar Navigation
getSupportActionBar().setListNavigationCallbacks(adapter,navlistener);
}
@Override
public void onTimePicked(Calendar time) {
// TODO Auto-generated method stub
}
@Override
public void onItemSelected(AdapterView为了更清晰,我发布屏幕截图,请检查并让我知道,我错过了什么.
屏幕1：显示为默认值
屏幕2：显示时间选择器对话框
屏幕3：显示日期选择器对话框
最佳答案
您还可以将TextView的对象传递给TimePickerFragment&的DialogFragment. DatePickerFragment.
以下是示例概述.
创建DatePickerFragment的构造函数作为TextView的参数,并在该TextView上设置日期.
public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {
TextView mTextView;
DatePickerDialog mDatePickerDialog;
public DatePickerFragment(TextView textview)
{
mTextView = textview;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
mDatePickerDialog = new DatePickerDialog(getActivity(),intYear,intMonth,intDay);
return mDatePickerDialog;
}
@Override
public void onDateSet(DatePicker view,int dayOfMonth) {
mTextView.setText(String.valueOf(dayOfMonth)+"/"+String.valueOf(monthOfYear+1)+"/"+String.valueOf(year));
}
}
如何通过textview？
DialogFragment newFragment = new DatePickerFragment(textDate);
newFragment.show(getActivity().getSupportFragmentManager(),"datePicker");
与TimePickerFragment相同
DialogFragment newFragment = new TimePickerFragment(textTime);
newFragment.show(getActivity().getSupportFragmentManager(),"datePicker");
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