Question

我绝对是Android的初学者。我正在尝试使用datepicker对话框在片段内部为文本字段设置文本。

这是活动

中文本字段的片段

public class CreateTaskFragment extends Fragment{
    private Button saveBtn;
    private EditText tfDescription,tfDate;
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.create_task,container,false);

        tfDescription = (EditText)view.findViewById(R.id.tf_task_description);
        tfDate = (EditText)view.findViewById(R.id.tf_task_date);
        tfDate.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                DialogFragment pickerFragment = new SelectDateFragment();
                pickerFragment.show(getFragmentManager(),"DatePicker");
            }
        });

        saveBtn = (Button)view.findViewById(R.id.btn_save_task);
        saveBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                saveTask();
            }
        });

        return view;
    }

    public void saveTask()
    {
        String description = tfDescription.getText().toString();
        String date = tfDate.getText().toString();
    }
}

这是选择器的对话框片段

public class SelectDateFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        final Calendar calendar = Calendar.getInstance();
        int yy = calendar.get(Calendar.YEAR);
        int mm = calendar.get(Calendar.MONTH);
        int dd = calendar.get(Calendar.DAY_OF_MONTH);
        return new DatePickerDialog(getActivity(), this, yy, mm, dd);
    }

    public void onDateSet(DatePicker view, int yy, int mm, int dd) {
        populateSetDate(yy, mm+1, dd);
    }
    public void populateSetDate(int year, int month, int day) {
        //set the date here

    }

}

我的问题是如何设置上一个片段的文本字段的选定日期。 Datepicker正在运行，我不知道如何设置编辑文本的选定日期。

Answer 1

为您提供简单的解决方案，只需使用此

替换OnClick中的代码即可

public void onClick(View v) {

            final Calendar calendar = Calendar.getInstance();
            int yy = calendar.get(Calendar.YEAR);
            int mm = calendar.get(Calendar.MONTH);
            int dd = calendar.get(Calendar.DAY_OF_MONTH);
            DatePickerDialog datePicker = new DatePickerDialog(getActivity(), new DatePickerDialog.OnDateSetListener() {
                @Override
                public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                    String date = "Date"+String.valueOf(year) +"-"+String.valueOf(monthOfYear)
                            +"-"+String.valueOf(dayOfMonth);
                    tfDescription.setText(date);
                    tfDate.setText(date);
                }
            }, yy, mm, dd);
            datePicker.show();

选择日期后，您会看到tfDescription / tfDate的EditText已更改

Answer 2

您可以将日期设置为描述的EditText。如：

 @Override
 public void onDateSet(DatePicker dialog, int year, int monthOfYear, int dayOfMonth) {
    //set the text of description
    tfDescription.setText("Year:" + year + " Month: " + monthOfYear + "Day: " + dayOfMonth);
    //get the data of date by using Calendar
    Calendar calendar = Calendar.getInstance();
    calendar.set(year,monthOfYear,dayOfMonth);
    mCurrentDate = calendar.getTimeInMillis();
}

这意味着您可以访问@Override public void onDateSet

中的日期数据

Answer 3

为SelectDateFragment创建将获得EditText引用的构造函数，在onDate（）中，您可以将日期设置为该引用。就这么简单。

如何为Android中的片段内的textview显示或设置datepicker对话框？

3 个答案: