java - Android 注释 DialogFragment

Question

我正在尝试使用 android 注释创建 DialogFragment。

我已经创建了dialogFragment类wint fragment 注释，但不知道下一步是什么:

@EFragment
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);
    }

    public Date Value;

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

你能告诉我如何使用这个类并调用fragment。另外，我想在对话框关闭后获取值。

Answer 1

按照 WonderCsabo 的建议，您应该创建对话 fragment ，然后您应该使用 FragmentTransaction 来显示它。

下面是一个例子:

// create a FragmentTransaction from the FragmentManager
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.addToBackStack(null);

// Create and show the dialog.
DatePickerFragment dFrag = DatePickerFragment_.builder().build();
dFrag.show(ft, "dialog");