Question

我正在使用导航抽屉开发应用程序。当我点击导航列表中的某些项目时，它会显示一些使用片段的界面。我的点击项也正常工作。我使用图像按钮来显示日期选择器。我使用下面的代码。但是当我从数据选择器对话框设置日期时。它不会更改给定的文本视图。请指导我一些代码示例..

public class FindPeopleFragment extends DialogFragment  implements DatePickerDialog.OnDateSetListener  {

    public int year;
    public int month;
    public int day;
    static final int DATE_PICKER_ID = 1111; 
    TextView curentDate;




public FindPeopleFragment(TextView date){
    curentDate = date;
}
public FindPeopleFragment(){

}



@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.schedule, container, false);
    ImageButton date = (ImageButton) rootView.findViewById(R.id.btnDate); 
     curentDate = (TextView) rootView.findViewById(R.id.txtCurrentDate);

     /*final Calendar c = Calendar.getInstance();
     year  = c.get(Calendar.YEAR);
     month = c.get(Calendar.MONTH);
     day   = c.get(Calendar.DAY_OF_MONTH);

    curentDate.setText(new StringBuilder()
    // Month is 0 based, just add 1
    .append(month + 1).append("-").append(day).append("-")
    .append(year).append(" "));*/


    date.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            //Toast.makeText(getActivity(), "clicked", Toast.LENGTH_LONG).show();
            //showDialog(DATE_PICKER_ID);
            showDatePickerDialog(v);
        }
    });
    return rootView;


}

public Dialog onCreateDialog(Bundle savedInstanceState) {


    final Calendar c = Calendar.getInstance();
    year  = c.get(Calendar.YEAR);
    month = c.get(Calendar.MONTH);
    day   = c.get(Calendar.DAY_OF_MONTH);
    return new DatePickerDialog(getActivity(), datePickerListener, year, month, day);

}
private DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener(){
public void onDateSet(DatePicker view, int syear, int smonth, int sday) {
    // Do something with the date chosen by the user
    month = smonth;
    day = sday;
    year = syear;
    curentDate.setText(String.valueOf(month + 1 ) + "/" +   String.valueOf(day) + "/" + String.valueOf(year));

}

};

public void showDatePickerDialog(View v) {
    DialogFragment newFragment = new DatePickerFragment();
    newFragment.show(getFragmentManager(), "datePicker");
}
@Override
public void onDateSet(DatePicker arg0, int arg1, int arg2, int arg3) {
    // TODO Auto-generated method stub

}

}

Answer 1

使用params创建构造函数是个坏主意。

使用界面作为对活动的回调，并将选择的日期设置为活动或framgent中的textview。

从DialogFragment到Activity

How to transfer the formatted date string from my DatePickerFragment?

片段活动

Send data from activity to fragment in android

DialogFragment - ＆GT;活动 - ＆GT;片段

http://developer.android.com/training/basics/fragments/communicating.html

具有片段类android的日期选择器

1 个答案: