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我想MH在TimePicker onTimeSet not being called的回答了這個問題之後，顯示在一個片段不同TextViews不同的日期設置日期，但我沒有得到一個片段相同的結果。我的代碼是不能工作在多TextViews
我已經加入一個單獨的DatePickerFragment類，其中我使用其被用作一個回調方法和在片段類藥物被定義的接口類。
我如何在一個片段中設置多個日期選擇器？
的DatePickerFragment被寫爲：
public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {
private int mId;
DatePickerDialogListener mListener;
protected static DatePickerFragment newInstance(int id) {
Bundle args = new Bundle();
args.putInt("picker_id", id);
DatePickerFragment fragment = new DatePickerFragment();
fragment.setArguments(args);
return fragment;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// ... omitted
final Calendar c = Calendar.getInstance();
int mDay = c.get(Calendar.DAY_OF_MONTH);
int mMonth = c.get(Calendar.MONTH);
int mYear = c.get(Calendar.YEAR);
mId = getArguments().getInt("picker_id");
mListener = getActivity() instanceof DatePickerFragment.DatePickerDialogListener ? (DatePickerFragment.DatePickerDialogListener) getActivity() : null;
// Create a new instance of TimePickerDialog and return it
return new DatePickerDialog(getActivity(), this, mYear, mMonth, mDay);
}
@Override
public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
if (mListener != null) mListener.onDateSet(mId, view, year, month, dayOfMonth);
}
public static interface DatePickerDialogListener {
public void onDateSet(int id, DatePicker view, int year, int month, int dayOfMonth);
}
}
其將利用本datepickerdialog片段類藥物有以下代碼：
public class Medication extends Fragment implements DatePickerFragment.DatePickerDialogListener {
private static final int FIRST_VISIT_ID = 1;
private static final int SECOND_VISIT_ID = 2;
private static final int THIRD_VISIT_ID = 3;
private int mYear;
private int mMonth;
private int mDay;
protected static TextView date1;
protected static TextView date2;
protected static TextView date3;
public Medication() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_medication, container, false);
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
date1 =(TextView) view.findViewById(R.id.visit_date1);
date2 =(TextView) view.findViewById(R.id.visit_date2);
date3 =(TextView) view.findViewById(R.id.visit_date3);
date1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DialogFragment newFragment = DatePickerFragment.newInstance(FIRST_VISIT_ID);
newFragment.show(getFragmentManager(), "timePicker");
}
});
date2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DialogFragment newFragment = DatePickerFragment.newInstance(SECOND_VISIT_ID);
newFragment.show(getFragmentManager(), "timePicker");
}
});
date3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DialogFragment newFragment = DatePickerFragment.newInstance(THIRD_VISIT_ID);
newFragment.show(getFragmentManager(), "timePicker");
}
});
date1.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(mDay).append("/")
.append(mMonth + 1).append("/")
.append(mYear).append(" "));
date2.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(mDay).append("/")
.append(mMonth + 1).append("/")
.append(mYear).append(" "));
date3.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(mDay).append("/")
.append(mMonth + 1).append("/")
.append(mYear).append(" "));
return view;
}
@Override
public void onDateSet(int id, DatePicker view, int year, int month, int dayOfMonth) {
Log.i("DatePicker", "Date picker set from id " + id + "!");
if(id == FIRST_VISIT_ID)
{
this.date1.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(dayOfMonth).append("/")
.append(month + 1).append("/")
.append(year).append(" "));
}
if(id == SECOND_VISIT_ID)
{
this.date2.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(dayOfMonth).append("/")
.append(month + 1).append("/")
.append(year).append(" "));
}
if(id == THIRD_VISIT_ID)
{
this.date3.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(dayOfMonth).append("/")
.append(month + 1).append("/")
.append(year).append(" "));
}
}
}
我曾嘗試添加多個拾取器用於時間選擇器的這個方法對話框，但同樣的問題發生在Medication類中的onTimeSet方法沒有被調用，因爲在這裏onDateSet。
的問題是，該對話框打開，當我點擊一個TextView但之後，我改變日期，該TextView的日期不會改變。此外，日誌信息消息未顯示爲onDateSet方法未被調用。 也許mListener在這種情況下是空的，我只能猜測。 請幫我解決這個問題。提前致謝。