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POImplement a DatePicker inside a Fragment
 

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  1. POImplement a DatePicker inside a Fragment
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    <p>I have below codes to display a date picker inside an Activity, but when I tried to convert my activity to Fragment, I am getting error. I can't really see any difference in code compare to solutions in SO to implement a DialogFragment inside a Fragment.</p> <p>Can you please point out what am I missing?</p> <p><strong>MainFragment:</strong></p> <pre><code>public class AddEntryFragment extends Fragment implements DatePickerFragment.TheListener{ EditText datpurchased; public AddEntryFragment(){} @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.activity_addentry, container, false); return rootView; } @Override public void onStart() { super.onStart(); datpurchased = (EditText) getView().findViewById(R.id.datepurchased); datpurchased.setOnClickListener(onClickListener); } private OnClickListener onClickListener = new OnClickListener() { @Override public void onClick(View v) { switch(v.getId()){ case R.id.datepurchased: showdate(v); break; default: break; } } }; public void showdate(View v) { DialogFragment newFragment = new DatePickerFragment(); Bundle bundle = new Bundle(); bundle.putString("dateAsText",datpurchased.getText().toString()); newFragment.setArguments(bundle); newFragment.show(getFragmentManager(), "datePicker"); } public void returnDate(String date) { datpurchased.setText(date); } } </code></pre> <p><strong>DatePickerFragment:</strong></p> <pre><code>public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener { TheListener listener; public interface TheListener{ public void returnDate(String date); } @Override public Dialog onCreateDialog(Bundle savedInstanceState){ Bundle bundle = getArguments(); String date = bundle.getString("dateAsText"); int year, month, day; SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd",Locale.US); df.setLenient(false); Date d = null; Calendar c=Calendar.getInstance(); try { d = df.parse(date); c.setTime(d); } catch (ParseException e) { //e.printStackTrace(); } year=c.get(Calendar.YEAR); month=c.get(Calendar.MONTH); day=c.get(Calendar.DAY_OF_MONTH); listener = (TheListener) getActivity(); return new DatePickerDialog(getActivity(), this, year, month, day); } 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",Locale.US); String formattedDate = sdf.format(c.getTime()); if (listener != null) { listener.returnDate(formattedDate); } } } </code></pre> <p><strong>LogCat:</strong></p> <pre><code>12-18 23:35:41.094: D/AndroidRuntime(1058): Shutting down VM 12-18 23:35:41.094: W/dalvikvm(1058): threadid=1: thread exiting with uncaught exception (group=0xb4a65b90) 12-18 23:35:41.124: E/AndroidRuntime(1058): FATAL EXCEPTION: main 12-18 23:35:41.124: E/AndroidRuntime(1058): Process: com.migrationdesk.mylibman, PID: 1058 12-18 23:35:41.124: E/AndroidRuntime(1058): java.lang.ClassCastException: com.migrationdesk.mylibman.NavContainer cannot be cast to com.migrationdesk.mylibman.DatePickerFragment$TheListener 12-18 23:35:41.124: E/AndroidRuntime(1058): at com.migrationdesk.mylibman.DatePickerFragment.onCreateDialog(DatePickerFragment.java:41) 12-18 23:35:41.124: E/AndroidRuntime(1058): at android.app.DialogFragment.getLayoutInflater(DialogFragment.java:398) 12-18 23:35:41.124: E/AndroidRuntime(1058): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:890) 12-18 23:35:41.124: E/AndroidRuntime(1058): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062) 12-18 23:35:41.124: E/AndroidRuntime(1058): at android.app.BackStackRecord.run(BackStackRecord.java:684) 12-18 23:35:41.124: E/AndroidRuntime(1058): at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1447) 12-18 23:35:41.124: E/AndroidRuntime(1058): at android.app.FragmentManagerImpl$1.run(FragmentManager.java:443) 12-18 23:35:41.124: E/AndroidRuntime(1058): at android.os.Handler.handleCallback(Handler.java:733) 12-18 23:35:41.124: E/AndroidRuntime(1058): at android.os.Handler.dispatchMessage(Handler.java:95) 12-18 23:35:41.124: E/AndroidRuntime(1058): at android.os.Looper.loop(Looper.java:137) 12-18 23:35:41.124: E/AndroidRuntime(1058): at android.app.ActivityThread.main(ActivityThread.java:4998) 12-18 23:35:41.124: E/AndroidRuntime(1058): at java.lang.reflect.Method.invokeNative(Native Method) 12-18 23:35:41.124: E/AndroidRuntime(1058): at java.lang.reflect.Method.invoke(Method.java:515) 12-18 23:35:41.124: E/AndroidRuntime(1058): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777) 12-18 23:35:41.124: E/AndroidRuntime(1058): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593) 12-18 23:35:41.124: E/AndroidRuntime(1058): at dalvik.system.NativeStart.main(Native Method) </code></pre>
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