我有这个活动：
public class TabLayoutScreenActivity extends BaseActivity {
Toolbar mToolbar;
Drawer drawer;
private static final String TAG = "TabLayoutScreenActivity";
private TabLayout tabLayout;
private Bundle bundle;
Switch mySwitch;
TextView OpenClose;
private FloatingActionButton action_find_location;
boolean userLoggedIn=false,chefLoggedIn=false;
String selectedCity, selectedLocality,date;
ViewPager viewPager;
TextView toolbarCityText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tab_screen);
tabLayout = (TabLayout) findViewById(R.id.tab_layout);
viewPager = (ViewPager) findViewById(R.id.pager);
mySwitch = (Switch) findViewById(R.id.mySwitch);
OpenClose = (TextView) findViewById(R.id.OpenClose);
initToolbar();
initDrawer();
}
private String convertDate(String date)
{
return date;
}
private void initToolbar()
{
}
private void initDrawer()
{
}
private void signOutUser()
{
}
private void signOutChef()
{
}
public void selectDate(View view) {
Calendar cal = Calendar.getInstance(TimeZone.getDefault());
DatePickerDialog datePicker = new DatePickerDialog(this,
R.style.AppTheme, datePickerListener,
cal.get(Calendar.YEAR),
cal.get(Calendar.MONTH),
cal.get(Calendar.DAY_OF_MONTH));
datePicker.setCancelable(false);
datePicker.setTitle("Select the date");
datePicker.show();
}
private DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int selectedYear,
int selectedMonth, int selectedDay) {
String year1 = String.valueOf(selectedYear);
String month = String.valueOf(selectedMonth + 1);
String month1 = new DateFormatSymbols().getMonths()[selectedMonth];
String day = String.valueOf(selectedDay);
if (Integer.parseInt(day) < 10) {
day = "0" + day;
}
if (Integer.parseInt(month) < 10) {
month = "0" + month;
}
toolbarCityText.setText(day + " " + month1 + " " + year1);
String date = year1 + "-" + month + "-" + day;
PrefernceHelper.putString(TabLayoutScreenActivity.this, Commons.Constants.DATE, date);
}
};
public void changeViewPager(int position)
{
viewPager.setCurrentItem(position,true);
}
public class SectionPagerAdapter extends FragmentPagerAdapter {
public SectionPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new ChefFragment();
case 1:
return new OrderFragment();
case 2:
return new BasketFragment();
default:
return new ChefFragment();
}
}
@Override
public int getCount() {
return 3;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "Pending";
case 1:
return "Accepted";
case 2:
return "Rejected";
case 3:
return "More";
default:
return "Chef";
}
}
}
@Override
public void onBackPressed() {
if (bundle == null) {
FoodleBeeBasketDao foodleBeebasket = new FoodleBeeBasketDao(
this.getApplicationContext(), DbHelper.getInstance(
this.getApplicationContext(),
DbConfiguration.getInstance(this.getApplicationContext())
).getSQLiteDatabase()
);
foodleBeebasket.deleteAll();
TabLayoutScreenActivity.this.finish();
}
TabLayoutScreenActivity.this.finish();
}
}
称之为片段：
public class ChefFragment extends Fragment implements AdapterView.OnItemClickListener {
// static ChefFragment fragment = null;
ListView lstOrders;
ChefsAdapter adapter;
BeeGif viewGif;
// Bundle bundle;
ArrayList<Chefs> chefList;
private String imageUrl;
private FloatingActionButton action_find_location;
ArrayList<ChefOrderList> orderLists;
private SwipeRefreshLayout mSwipeRefreshLayout;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_list, null);
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
lstOrders = (ListView) view.findViewById(lstFood);
lstOrders.setOnItemClickListener(this);
RelativeLayout viewLayout = (RelativeLayout) view.findViewById(R.id.beeGif);
viewGif = (BeeGif) viewLayout.findViewById(R.id.view);
System.out.println(PrefernceHelper.getString(getActivity(), Commons.Constants.DATE));
if (NetworkHelper.isOnline(getActivity())) {
callServiceForMenuStatusDetails(PrefernceHelper.getString(getActivity(), Commons.Constants.DATE));
} else {
NetworkHelper.noNetworkToast(getActivity());
}
}
private void callServiceForMenuStatusDetails(String date) {
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
System.out.println("Test");
Intent intent = new Intent();
intent.putExtra("orderID", orderLists.get(position).getOrderId());
intent.setClass(getActivity(), OrderDetailsActivity.class);
startActivity(intent);
}
}
方法SelectDate调用日期选择器对话框。根据此日期，在我的数据库中执行搜索。结果列在上面的片段中。每次我选择一个新约会时，我都需要刷新片段。
答案 0 :(得分：0)
我想出了如何解决我的问题。我在选择一个新日期后立即放了这段代码：
{{1}}
“pager”是活动布局中加载Fragment的空间。它完美无缺！