android - 如何从 DatePickerDialog 检索数据到 AlertDialog

转载作者：行者123 更新时间：2023-11-29 18:54:54

<分区>

我有一个 MainFragment，其中一个按钮创建了一个 AlertDialog，其中有多个字段，其中之一是日期，在日期按钮中我调用了一个 DatePickerDialog 并选择日期，所以我的问题是:
如何检索该日期并将其设置在 MainFragment 上警报对话框的 TextView 上?

这是在主要 fragment 的 AlertDialog 上:

public class FragmentInicio extends Fragment{
   String date;

  public void addDate(){

  View view = (LayoutInflater.from(getActivity())).inflate(R.layout.alert_dialog,null);

AlertDialog.Builder alertDialog = new AlertDialog.Builder(getActivity());
alertDialog.setView(view);

final EditText date_EditText = view.findViewById(R.id.dateEditText);
final ImageButton dateButton= view.findViewById(R.id.tareaFechaButton);
dateButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        CalendarPickerFragment newFragment = new CalendarPickerFragment();
        newFragment.show(getFragmentManager(), "DatePicker");

    }
});

date_EditText.setText(date);

alertDialog.setTitle("New Date");
alertDialog.setCancelable(true).setPositiveButton("Save", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
       //Some stuff
    }
});

alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
        dialog.cancel();
    }
});
Dialog dialog = alertDialog.create();
dialog.show();

}

public static void displaydate(int year, int monthOfYear, int dayOfMonth) {
    date = String.format("%02d", dayOfMonth) + "/" + String.format("%02d", monthOfYear + 1) + "/" +
            String.format("%02d", year);
    Log.d("DTAG", "date: "+date);
}

这是在 CalendarPickerFragment 上

Update

public class CalendarPickerFragment extends DialogFragment implements  DatePickerDialog.OnDateSetListener {

    private CalendarPickerFragment.OnDateReceiveCallBack mListener;
    private Context context;

    public interface OnDateReceiveCallBack {
         void onDateReceive(int dd ,int mm, int yy);
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        this.context = context;

        try {
            mListener = (CalendarPickerFragment.OnDateReceiveCallBack) context;
        } catch (ClassCastException e) {
            throw new ClassCastException(context.toString() + " must implement OnDateSetListener");
        }
    }

    public CalendarPickerFragment(){
    }



    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {

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

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

    @Override
    public void onDateSet(DatePicker datePicker, int i, int i1, int i2) {
        Log.d(TAG, i + "/" + "/" + i1 + "/" + i2);
        mListener.onDateReceive(i,i1,i2);
    }
}

主 Activity

public class MainActivty implements CalendarPickerFragment.OnDateReceiveCallBack{
@Override
    public void onDateReceive(int dd, int mm, int yy) {
        MainFragment.displaydate(dd,mm,yy);
    }
}