FragmentTransaction 无法转换为 Fragment Manager

Question

有谁知道如何解决这个问题？如何转换 fragmentTransaction to fragment manager？我有一个 datePicker in Information activity 和 TimePicker in WorkDetails activity.Any 的建议将不胜感激。谢谢

Information.java

   dialog = new DateDialog();
     public void onClick(View arg0) {
            FragmentTransaction ft =getActivity().getSupportFragmentManager().beginTransaction();
            dialog.show(ft, "DatePicker");

        }
 public static class DateDialog extends android.app.DialogFragment implements DatePickerDialog.OnDateSetListener {
        //  EditText txtdate;
        Tab t;


        public DateDialog() {

        }


        public Dialog onCreateDialog(Bundle savedInstanceState) {

            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);
            return new DatePickerDialog(getActivity(), this, year, month, day);
        }

        public void onDateSet(DatePicker view, int year, int month, int day) {
            String date = day + "-" + (month + 1) + "-" + year;
            txtDate.setText(date);
            date1 = txtDate.getText().toString();
            return;
            //t.add(date);


        }
    }

WorkDetails.java

 if (id == R.id.editTextTI2) {
            tp.setFlag(TimePick.FLAG_START_DATE1);
            FragmentTransaction ft =getActivity().getSupportFragmentManager().beginTransaction();
            tp.show(ft, "TimePicker");
        }

错误

Error:(51, 15) error: 

    no suitable method found for show(android.support.v4.app.FragmentTransaction,String)
    method DialogFragment.show(FragmentManager,String) is not applicable
    (argument mismatch; android.support.v4.app.FragmentTransaction cannot be converted to FragmentManager)
    method DialogFragment.show(android.app.FragmentTransaction,String) is not applicable
    (argument mismatch; android.support.v4.app.FragmentTransaction cannot be converted to android.app.FragmentTransaction)

Answer 1

添加import android.support.v4.app.FragmentTransaction；要么 import android.support.v4.app.*

Answer 2

Information.java

使用 public static class DateDialog extends android.support.v4.app.DialogFragment implements DatePickerDialog.OnDateSetListener 而不是 public static class DateDialog extends android.app.DialogFragment implementsDatePickerDialog.OnDateSetListener。

WorkDetails.java

public static class TimePick extends android.support.v4.app.DialogFragment implements TimePickerDialog.OnTimeSetListener

FragmentTransaction 无法转换为 Fragment Manager

FragmentTransaction cannot be converted to Fragment Manager

java

android

android-fragments

datepicker

timepicker