在 Fragment 中实现 DatePicker [英] Implementing DatePicker in Fragment

问题描述

我使用的是 Fragment，它是 Fragment 的一个实例，而不是 DialogFragment 的实例.

I'am using Fragment which is an instance of Fragment and not of DialogFragment.

我在谷歌上搜索了大部分搜索结果，展示了如何使用 DialogFragment 来拥有 DatePicker.

I did google most of the search result shows how to use DialogFragment to have DatePicker.

这在我的情况下不起作用，因为 Fragment 和 DialogFragment 的类型不匹配

which isn't working in my case because of type mismatch of Fragment and DialogFragment

任何例子或想法都会有帮助

Any example or idea would be helpful

这是片段 Java 代码

        public class CreateReportFragment extends Fragment {

        public CreateReportFragment(){}

        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) 
        {

               rootView = inflater.inflate(R.layout.activity_create_report, container, false);
               initViews();
               return rootView;
        }

        private void initViews() 
       {

         final Calendar c = Calendar.getInstance();
             year  = c.get(Calendar.YEAR);
             month = c.get(Calendar.MONTH);
             day   = c.get(Calendar.DAY_OF_MONTH);

             editTextDate.setText(new StringBuilder()
             // Month is 0 based, just add 1
             .append(year)
             .append("-")
                    .append(month + 1)
                     .append("-").append(day));

        buttonDate = (Button)rootView.findViewById(R.id.buttonDate);
        }

如何在Fragment中实现DatePicker?

推荐答案

使用 DialogFragment

如果我猜对了，您想在单击 buttonDate 时显示 DatePicker

If i am guessing right you want to show a DatePicker on click of buttonDate

http://developer.android.com/guide/topics/ui/controls/pickers.html

点击按钮

DialogFragment picker = new DatePickerFragment();
picker.show(getFragmentManager(), "datePicker");

DatePickerFragment.java

DatePickerFragment.java

public 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);
}

@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Calendar c = Calendar.getInstance();
c.set(year, month, day);

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String formattedDate = sdf.format(c.getTime());    
}
}

这篇关于在 Fragment 中实现 DatePicker的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！