冲突support.v4.app.Fragment VS app.Fragment使用DatePickerDialog时 [英] Conflict support.v4.app.Fragment vs app.Fragment when using DatePickerDialog

问题描述

我真的不明白是怎么回事的support.v4库，但无论如何。我有一个片段，我实现单击导航抽屉中的项目（从机器人工作室的默认实现）时被打开。在这个片段，我想开一个datePickerDialog，但我找不到它的工作解决方案。下面是我的日期选择器片段：

I don't really understand what's going on with the support.v4 library but anyway. I have a Fragment that I implemented to be opened when clicking an item in the navigation drawer (default implementation from android studio). In this fragment, i'd like to open a datePickerDialog but I can't find the solution for it to work. Here is my fragment with the datePicker:

import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.os.Bundle; 
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.ListView;
import android.widget.Toast;

import java.util.Calendar;

public class SearchFragment extends Fragment {

private ListView listView;
private CustomAdapter activityAdapter;
private Button filterButton;

public SearchFragment(){}

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

    View rootView = inflater.inflate(R.layout.fragment_search, container, false);

    activityAdapter = new CustomAdapter(getActivity());

    listView = (ListView) rootView.findViewById(R.id.lvActivity);
    listView.setAdapter(activityAdapter);
    activityAdapter.loadObjects();
    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
            String activity = activityAdapter.getItem(position).get("activity").toString();
            Toast.makeText(getActivity(), activity, Toast.LENGTH_SHORT).show();
        }
    });
    filterButton = (Button) rootView.findViewById(R.id.bFilter);

    return rootView;
}

public void showDatePickerDialog(View v) {
    DialogFragment newFragment = new DatePickerFragment();
    newFragment.show(getSupportFragmentManager(), "datePicker");
}

public static class DatePickerFragment extends DialogFragment
        implements DatePickerDialog.OnDateSetListener {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the current date as the default date in the picker
        final Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH);
        int day = c.get(Calendar.DAY_OF_MONTH);

        // Create a new instance of DatePickerDialog and return it
        return new DatePickerDialog(getActivity(), this, year, month, day);
    }

    public void onDateSet(DatePicker view, int year, int month, int day) {
        // Do something with the date chosen by the user
    }
}

}

我的问题是在这条线：newFragment.show（getSupportFragmentManager（），日期选择器）;

My problem is in this line : newFragment.show(getSupportFragmentManager(), "datePicker");

我见过有一个兼容性的问题，如果该活动没有扩展片段，但我的活动已经扩展ActionBarActivity。我应该怎么办？

I've seen there is a compatibility problem if the activity doesn't extend Fragment but my activity is already extending ActionBarActivity. What should I do ?

推荐答案

没有你没有。你打错进口此处

No you have not. you have the wrong import here

  import android.app.DialogFragment;

将其更改为使用支持库

change it to use the support library

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