Исключение нулевого указателя при загрузке фрагмента при нажатии на опцию "add_product" формирует параметры моего меню . Вот мое меню в моем будет onoptionsitemselected
public class ProductListActivity extends NavigationDrawerActivity
{
private final String TAG = ProductListActivity.class.getSimpleName();
private SectionsPagerAdapter mSectionsPagerAdapter;
private ViewPager mViewPager;
private ImageLoader imageLoader;
private int lastTop = 0;
private ProgressDialog mProgressDialog;
private ArrayList<String> tabContent;
private Context context;
private CharSequence[] mMerchantCategoryName;
private ArrayList<MasterCategory> categoriesList;
private MasterCategory category;
private ArrayList<Product> mMerchantProducts;
private ArrayList<MasterCategory> mMerchantCategories;
private HashMap<Integer, ArrayList<MasterCategory>> mMerchantSubCategories;
private HashMap<Integer, ArrayList<MasterCategory>> mMerchantSubSubCategories;
private HashMap<Integer, ArrayList<MasterCategory>> mMerchantSuperSubCategories;
@Override
protected void onCreate(Bundle savedInstanceState) {
isViewPagerPresent = true;
isViewPagerWithParalexPresent = true;
super.onCreate(savedInstanceState);
getWindow().setWindowAnimations(0);
// setToolbarTitle("My Products");
if (!EventBus.getDefault().isRegistered(this))
EventBus.getDefault().register(this);
context = this;
initialiseUI();
getMasterCategory();
}
public void initialiseUI()
{
imageLoader = Global.getInstance().getImageLoader();
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
mViewPager = (ViewPager) findViewById(R.id.pager);
//showSubCategoryTabs();
}
private void getMasterCategoryFromServer()
{
if(null == AmodaMerchantUser.getInstance().getMerchantCategories())
{
MerchantCategoryRequest merchantCategoryRequest = new MerchantCategoryRequest();
ArrayList<Category> categories = AmodaMerchantUser.getInstance().getMerchantProfile().getVendorCategoryList();
if (null != categories)
{
ArrayList<String> categoryIds = new ArrayList<>();
for (int i = 0; i < categories.size(); i++)
{
categoryIds.add("" + categories.get(i).getId());
}
merchantCategoryRequest.setCategoryIds(TextUtils.join(", ", categoryIds));
merchantCategoryRequest.setMerchantId(AmodaMerchantUser.getInstance().getMerchantProfile().getMerchantId());
if(null == mProgressDialog)
mProgressDialog = UIHelper.showProgressDialog(this, "One moment Please...", false, true);
new WebServicesManager().getMerchantCategoryList(merchantCategoryRequest);
}
}
}
private void getMasterCategory()
{
/*mProgressDialog = UIHelper.showProgressDialog(this, "Please Wait...", false, true);
MerchantCategoryRequest merchantCategoryRequest = new MerchantCategoryRequest();
ArrayList<Category> categories = AmodaMerchantUser.getInstance().getMerchantProfile().getVendorCategoryList();
ArrayList<String> categoryIds = new ArrayList<>();
for (int i = 0; i < categories.size(); i++) {
categoryIds.add("" + categories.get(i).getId());
}
merchantCategoryRequest.setCategoryIds(TextUtils.join(", ", categoryIds));
merchantCategoryRequest.setMerchantId(AmodaMerchantUser.getInstance().getMerchantProfile().getMerchantId());
new WebServicesManager().getMerchantCategoryList(merchantCategoryRequest);*/
//mMerchantCategories = AmodaMerchantUser.getInstance().getMerchantCategories();
mMerchantSubCategories = AmodaMerchantUser.getInstance().getMerchantSubCategories();
mMerchantSubSubCategories = AmodaMerchantUser.getInstance().getMerchantSubSubCategories();
mMerchantSuperSubCategories = AmodaMerchantUser.getInstance().getMerchantSuperSubCategories();
categoriesList = AmodaMerchantUser.getInstance().getMerchantCategories();
if(null == categoriesList)
{
/*UIHelper.showOneButtonAlert(this, "Alert", "Your Profile expired. Please try again.", "OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
onBackPressed();
}
}, false);*/
getMerchantProfile(PreferencesManager.getMerchantId());
}
else
{
mMerchantCategories = categoriesList;
category = categoriesList.get(0);
createCategoryHashTable();
showSubCategoryTabs();
}
}
private void getMerchantProfile(int merchantID)
{
mProgressDialog = UIHelper.showProgressDialog(this, "Profile expired, synchronising with server", false, true);
new WebServicesManager().getMerchantProfile(new RequestManager().getMerchantProfileRequest(merchantID));
}
public void onEvent(MerchantProfileResponse merchantProfileResponse)
{
if (merchantProfileResponse != null && merchantProfileResponse.getStatusCode() == Constants.Merchant.HttpResponse.SUCCESS)
{
removePreviousProfile();
DatabaseManager.MerchantProfileManager merchantProfileManager = new DatabaseManager().new MerchantProfileManager(this);
merchantProfileManager.insertMerchantInDB(merchantProfileResponse);
AmodaMerchantUser.getInstance().setMerchantProfile(merchantProfileResponse);
PreferencesManager.setMerchantId(merchantProfileResponse.getMerchantId());
getMasterCategoryFromServer();
}
else
{
UIHelper.stopProgressDialog(mProgressDialog);
logoutUser();
}
}
public void onEvent(MerchantCategoryResponse merchantCategoryResponse)
{
UIHelper.stopProgressDialog(mProgressDialog);
if (Constants.Merchant.HttpResponse.SUCCESS == merchantCategoryResponse.getStatusCode())
{
AmodaMerchantUser.getInstance().createCategoryHashTable(merchantCategoryResponse.getCategoriesList());
mMerchantSubCategories = AmodaMerchantUser.getInstance().getMerchantSubCategories();
mMerchantSubSubCategories = AmodaMerchantUser.getInstance().getMerchantSubSubCategories();
mMerchantSuperSubCategories = AmodaMerchantUser.getInstance().getMerchantSuperSubCategories();
categoriesList = AmodaMerchantUser.getInstance().getMerchantCategories();
mMerchantCategories = categoriesList;
category = categoriesList.get(0);
createCategoryHashTable();
showSubCategoryTabs();
}
else
{
logoutUser();
}
}
private void logoutUser()
{
Toast.makeText(this, "Can not synchronise with server, please login again.", Toast.LENGTH_SHORT).show();
new WebServicesManager().merchantLogout(new RequestManager().getMerchantLogoutRequest(PreferencesManager.getMerchantId()));
clearUserDataOnLogout();
Intent intent = new Intent(this, BaseFragmentActivity.class);
intent.putExtra("toolbarTitle", Constants.Merchant.ToolbarTitle.LOGIN);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
intent.putExtra("FragmentClassName", LoginFragment.class.getName());
intent.putExtra("isLogin", true);
startActivity(intent);
finish();
}
private void removePreviousProfile()
{
DatabaseManager.MerchantProfileManager merchantProfileManager = new DatabaseManager().new MerchantProfileManager(this);
Merchant merchantProfiles;
long retVal = -1;
do
{
merchantProfiles = merchantProfileManager.getMerchantProfile();
if(null!= merchantProfiles)
retVal = merchantProfileManager.deleteMerchantById(merchantProfiles);
}while(null != merchantProfiles && retVal > 0);
}
/*public void onEvent(MerchantCategoryResponse merchantCategoryResponse) {
UIHelper.stopProgressDialog(mProgressDialog);
if (Constants.Merchant.HttpResponse.SUCCESS == merchantCategoryResponse.getStatusCode()) {
categoriesList = merchantCategoryResponse.getCategoriesList();
mMerchantCategories = categoriesList;
category = categoriesList.get(0);
createCategoryHashTable();
showSubCategoryTabs();
} else {
UIHelper.showOneButtonAlert(this, "Alert", "Merchant category details not found", "OK", null);
}
}*/
private void showSubCategoryTabs()
{
setToolbarTitle(category != null ? category.getName() : "");
try
{
mPromotionalImage.setDefaultImageResId(R.drawable.nodeals_img);
mPromotionalImage.setImageUrl(category.getImageUrl(), imageLoader);
}
catch (Exception e)
{
e.printStackTrace();
}
tabContent = new ArrayList<String>();
for (MasterCategory subCategories : category.getCategories()) {
/*Check if the sub-sub category has super-sub category or not.*/
if (null != subCategories.getCategories())
tabContent.add(subCategories.getName());
}
mViewPager.setAdapter(mSectionsPagerAdapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
tabLayout.setupWithViewPager(mViewPager);
mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener()
{
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels)
{
}
@Override
public void onPageSelected(int position)
{
// callCategory.get(position).sendCategoryResponse();
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
}
public class SectionsPagerAdapter extends FragmentStatePagerAdapter
{
public SectionsPagerAdapter(FragmentManager fm)
{
super(fm);
}
@Override
public Fragment getItem(int position)
{
MasterCategory subCategories = category.getCategories().get(position);
if (subCategories.isHasChildCategory())
{
SubCategoryFragment subCategoryFragment = new SubCategoryFragment();
Bundle bundle = new Bundle();
bundle.putSerializable("iconImageURL", category.getIconImageUrl());
bundle.putSerializable("data", category.getCategories().get(position));
subCategoryFragment.setArguments(bundle);
return subCategoryFragment;
}
else
{
SubCategoryProductsFragment subCategoryProductsFragment = new SubCategoryProductsFragment();
Bundle bundle = new Bundle();
bundle.putInt("categoryId", subCategories.getCategoryId());
bundle.putString("categoryName", subCategories.getName());
bundle.putBoolean("isSubCatProducts", true);
subCategoryProductsFragment.setArguments(bundle);
return subCategoryProductsFragment;
}
}
@Override
public int getCount()
{
return tabContent.size();
}
@Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
return tabContent.get(position);
}
}
@Override
public void onResume()
{
if (!EventBus.getDefault().isRegistered(this))
EventBus.getDefault().register(this);
super.onResume();
}
@Override
protected void onPause() {
super.onPause();
}
@Override
public void onStop()
{
super.onStop();
//*Unregister event bus when the app goes in background*//*
if (EventBus.getDefault().isRegistered(this))
EventBus.getDefault().unregister(this);
}
@Override
public void onDestroy()
{
super.onDestroy();
if (EventBus.getDefault().isRegistered(this))
EventBus.getDefault().unregister(this);
}
public void onError(VolleyError volleyError) {
UIHelper.stopProgressDialog(mProgressDialog);
Functions.Application.VolleyErrorCheck(this, volleyError);
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
getMenuInflater().inflate(R.menu.menu_category_change, menu);
MenuItem categoryMenuItem = menu.findItem(R.id.category);
boolean visible;
if (null != categoriesList && categoriesList.size() > 1)
{
visible = true;
}
else
{
visible = false;
}
categoryMenuItem.setVisible(visible);
return true;
}
public boolean onOptionsItemSelected(MenuItem item)
{
switch (item.getItemId())
{
case R.id.category:
displayCategories();
break;
case R.id.add_product:
Intent addProductIntent = new Intent(this, BaseFragmentActivity.class);
addProductIntent.putExtra("Categories", mMerchantCategories);
addProductIntent.putExtra("SubCategories", mMerchantSubCategories);
addProductIntent.putExtra("SubSubCategories", mMerchantSubSubCategories);
addProductIntent.putExtra("SuperSubCategories", mMerchantSuperSubCategories);
addProductIntent.putExtra("FragmentClassName", AddProductFragment.class.getName());
startActivity(addProductIntent);
break;
/* CustomDialogAddProductOption addproduct=new CustomDialogAddProductOption(context,mMerchantCategories,mMerchantSubCategories,mMerchantSubSubCategories,mMerchantSuperSubCategories);
addproduct.show();
*/
case R.id.changeproductprice:
changeproductprice();
break;
default:
return super.onOptionsItemSelected(item);
}
return true;
}
public void displayCategories()
{
getMasterCategoryFromServer();
if (!categoriesList.isEmpty())
{
mMerchantCategoryName = new String[categoriesList.size()];
for (int i = 0; i < categoriesList.size(); i++)
{
mMerchantCategoryName[i] = categoriesList.get(i).getName();
}
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("Select Category");
builder.setItems(mMerchantCategoryName, new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int item)
{
category = categoriesList.get(item);
showSubCategoryTabs();
}
});
builder.setNegativeButton("Cancel", null);
AlertDialog alert = builder.create();
alert.show();
}
}
private void createCategoryHashTable()
{
mMerchantSubCategories = new HashMap<>();
mMerchantSubSubCategories = new HashMap<>();
mMerchantSuperSubCategories = new HashMap<>();
if (null != mMerchantCategories)
{
/*Get merchant's sub-category from database*/
for (int i = 0; i < mMerchantCategories.size(); i++)
{
try
{
mMerchantSubCategories.put(mMerchantCategories.get(i).getCategoryId(), mMerchantCategories.get(i).getCategories());
}
catch (Exception e)
{
e.printStackTrace();
}
}
/*Get merchant's sub-sub-category from database*/
for (int i = 0; i < mMerchantSubCategories.size(); i++) {
for (int j = 0; j < mMerchantSubCategories.get(mMerchantCategories.get(i).getCategoryId()).size(); j++) {
try {
mMerchantSubSubCategories.put(mMerchantSubCategories.get(mMerchantCategories.get(i).getCategoryId()).get(j).getCategoryId(),
mMerchantSubCategories.get(mMerchantCategories.get(i).getCategoryId()).get(j).getCategories());
} catch (Exception e) {
e.printStackTrace();
}
}
}
/*Get merchant's super-sub-category from database*/
for (int subCategoryId = 0; subCategoryId < mMerchantSubCategories.size(); subCategoryId++) {
for (int i = 0; i < mMerchantCategories.get(subCategoryId).getCategories().size(); i++) {
for (int j = 0; j < mMerchantSubSubCategories.get(mMerchantCategories.get(subCategoryId).getCategories().get(i).getCategoryId()).size(); j++) {
try {
mMerchantSuperSubCategories.put(mMerchantSubSubCategories.get(mMerchantCategories.get(subCategoryId).getCategories().get(i).getCategoryId()).get(j).getCategoryId(),
mMerchantSubSubCategories.get(mMerchantCategories.get(subCategoryId).getCategories().get(i).getCategoryId()).get(j).getCategories());
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}
}
public void changeproductprice()
{
new WebServicesManager().UpdateProductPrice(new RequestManager().getUpdateProductPriceRequest(AmodaMerchantUser.getInstance().getMerchantProfile().getMerchantId()));
Toast.makeText(context,"Email sent successfully",Toast.LENGTH_LONG).show();
}
}
Что я уже пробовал:
Я попытался решить исключение нулевого указателя . Я создал диалог, а затем дал ему два варианта, из которых, если пользователь нажмет на один из вариантов, то фрагмент загрузится . Внутри фрагмента вместо того,чтобы присваивать фрагменту прямые значения, как показано выше, я извлек данные непосредственно из другого класса java.