public class MainFragment extends Fragment {
private static final String ARG_DATE="com.example.ting.datepickerfragment,date";
private static final String TAG_DATE="DatePickerFragment";
private static final int REQUEST_CODE=0;
private Button mButton;
private Date mDate;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
super.onCreateView(inflater,container,savedInstanceState);
View v=inflater.inflate(R.layout.buttonview,container,false);
mButton= (Button) v.findViewById(R.id.button_view);
mDate= (Date) getArguments().getSerializable(ARG_DATE);
mButton.setText(getArguments().getSerializable(ARG_DATE).toString()+"");
mButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Toast.makeText(getActivity(),"请不要点我！",Toast.LENGTH_SHORT).show();
// DialogFragment.
FragmentManager fm=getFragmentManager()//获取目前的Fragment,由于是在Fragment可以直接获取，如果在activity中需要自己创建。
DatePickerFragment datePickerFragment=DatePickerFragment.newInstance(mDate);
datePickerFragment.setTargetFragment(MainFragment.this,REQUEST_CODE);//设置将要被启动Fragment的父Fragment.
datePickerFragment.show(fm,TAG_DATE);//启动DialogFragment
}
});
// mButton.setText("sdfsdfsdf");
return v;
}

@Override  
public void onActivityResult(int requestCode, int resultCode, Intent data) {  
    super.onActivityResult(requestCode, resultCode, data);  
    mDate= (Date) data.getSerializableExtra(DatePickerFragment.EXTRA\_DATE);  
    mButton.setText(mDate.toString());  
}

public static MainFragment newInstance(Date date){  
    Bundle bundle=new Bundle();//将当前数据绑定到Bundle,通过Arguments传入Fragment  
    bundle.putSerializable(ARG\_DATE,date);  
    MainFragment fragment=new MainFragment();  
    fragment.setArguments(bundle);  
    return fragment;  
}  

}

/****************************************************/

public class DatePickerFragment extends DialogFragment {
private static final String BUNDLE_DATE = "com.example.ting.datepickerfragment.date";
public static final String EXTRA_DATE="com.example.ting.datepickerfragment.date";
private DatePicker mDatePicker;
private Date date;

@NonNull  
@Override  
public Dialog onCreateDialog(Bundle savedInstanceState) {//返回对话框样式  
    super.onCreateDialog(savedInstanceState);  
    View v = LayoutInflater.from(getActivity()).inflate(R.layout.date\_picker, null);  
    mDatePicker = (DatePicker) v.findViewById(R.id.date\_picker\_view);  
    date = (Date) getArguments().getSerializable(BUNDLE\_DATE);  
    mDatePicker.init(date.getYear(), date.getMonth(), date.getDay(), null);  

　　　　//创建AlertDialog样式。
return new AlertDialog.Builder(getActivity()).setTitle("Welcome").setView(v).setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Date mDate= new GregorianCalendar(mDatePicker.getYear(),mDatePicker.getMonth(),mDatePicker.getDayOfMonth()).getTime();
Intent intent=new Intent();
intent.putExtra(EXTRA_DATE,mDate);
getTargetFragment().onActivityResult(getTargetRequestCode(), Activity.RESULT_OK,intent);
//通过直接调用父Fragment的onActivityResult进行值传递。

//父Fragment通过实现onActivityResult方法来接收数据。

        }  
    }).create();  
}

public static DatePickerFragment newInstance(Date date) {  
    Bundle bundle = new Bundle();//将值绑定Bundle 通过Arguments传入子Fragment  
    bundle.putSerializable(BUNDLE\_DATE, date);  
    DatePickerFragment datePickerFragment = new DatePickerFragment();  
    datePickerFragment.setArguments(bundle);  
    return datePickerFragment;  
}  

}