Данные автоматически загружаются в другой класс путем перемещения между классами Viewpager - PullRequest
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Данные автоматически загружаются в другой класс путем перемещения между классами Viewpager

3 голосов
/ 18 июня 2019

Я работаю над приложением Android, в котором есть три окна просмотра.Первый и второй виджеры содержат список переработчиков.

Первый класс Viewpager содержит имя клиента, и я отправил Client name в Invoices Class(3rd Viewpager).

Я реализовал тот же метод для отправки данных списка переработчиков в класс Invoices.Данные будут отображаться в третьем списке viewpager Recycler, но когда я возвращаюсь назад и снова возвращаюсь к третьему viewpager, предыдущий выбранный элемент автоматически загружается в класс счетов-фактур.

ЗдесьМоя основная деятельность, которая содержит все три окна просмотра ... 

public class MainFragment extends AppCompatActivity {
DatabaseHelper databaseHelper;
ViewPager viewPager;
String fname;
String namebltp;
GetSetProductsDetail listProduct;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main_fragment);

    databaseHelper=new DatabaseHelper(this);
    Toolbar toolbar = findViewById(R.id.toolbar);
    toolbar.setTitle("Dynamic ERPMini");

    TabLayout tabLayout = findViewById(R.id.tab_layout);

    tabLayout.addTab(tabLayout.newTab().setText("Clients"));
    tabLayout.addTab(tabLayout.newTab().setText("Products"));
    tabLayout.addTab(tabLayout.newTab().setText("Invoices"));

    tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);

    final ViewPager viewPager = findViewById(R.id.pager);
    final PagerAdapter adapter = new PagersAdapter(getSupportFragmentManager(), tabLayout.getTabCount());

    viewPager.setAdapter(adapter);
    viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));

    tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {

        @Override
        public void onTabSelected(TabLayout.Tab tab) {
            viewPager.setCurrentItem(tab.getPosition());
        }

        @Override
        public void onTabUnselected(TabLayout.Tab tab) {

        }

        @Override
        public void onTabReselected(TabLayout.Tab tab) {

        }
    });
}
public void initialize() {
    viewPager = findViewById(R.id.pager);
}

@Override
public void onResume() {
    super.onResume();
    viewPager = findViewById(R.id.pager);
}

public void fromThirdToSecond(int position) {
    initialize();
    viewPager.setCurrentItem(position);
}


public void selectTab(int position, String fname) {
    initialize();
    this.fname = fname;
    viewPager.setCurrentItem(position);
}

public String getMyData() {
    return fname;
}

public void selectTabProd(int position, GetSetProductsDetail listProduct) {
    initialize();
    this.listProduct = listProduct;
    viewPager.setCurrentItem(position);
}

public String getMyProdData() {
    return namebltp;
}

Вот мой второй класс просмотра (класс продукта);Он также имеет адаптер для него .. 

public class Products extends Fragment {
RecyclerView recyclerViewProducts;
Button btnAllProducts;
ProductRecyclerAdapter productRecyclerAdapter;
List<GetSetProductsDetail> listproducts;
DatabaseHelper databaseHelper;
SearchView searchViewProd;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view =  inflater.inflate(R.layout.products, container, false);

    btnAllProducts=view.findViewById(R.id.searchallproducts);
    recyclerViewProducts=view.findViewById(R.id.listprod);

    searchViewProd=view.findViewById(R.id.searchproduct);

    listproducts = new ArrayList<>();

    productRecyclerAdapter = new ProductRecyclerAdapter(listproducts,recyclerViewProducts);
    recyclerViewProducts.setItemAnimator(new DefaultItemAnimator());
    recyclerViewProducts.setItemAnimator(new DefaultItemAnimator());
    recyclerViewProducts.setLayoutManager(new LinearLayoutManager(getContext()));
    recyclerViewProducts.setHasFixedSize(true);
    recyclerViewProducts.setAdapter(productRecyclerAdapter);

    databaseHelper = new DatabaseHelper(getActivity());

    searchViewProd.setOnSearchClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            getAllProductsFromSqlite();
        }
    });

    searchViewProd.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
        @Override
        public boolean onQueryTextSubmit(String query) {
            SearchSQliteProduct(query);
            return false;
        }

        @Override
        public boolean onQueryTextChange(String newText) {
            return true;
        }
    });
    btnAllProducts.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            getAllProductsFromSqlite();
        }
    });

    return view;
}

@SuppressLint("StaticFieldLeak")
private void SearchSQliteProduct(final String query) {
    new AsyncTask<Void, Void, Void>() {
        @Override
        protected Void doInBackground(Void... params) {
            listproducts.clear();
            listproducts.addAll(databaseHelper.SearchprodData(query));
            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            super.onPostExecute(aVoid);
            productRecyclerAdapter.notifyDataSetChanged();
        }
    }.execute();
}

@SuppressLint("StaticFieldLeak")
private void getAllProductsFromSqlite() {

    new AsyncTask<Void, Void, Void>() {
        @Override
        protected Void doInBackground(Void... params) {
            listproducts.clear();
            listproducts.addAll(databaseHelper.getAllProductsData());
            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            super.onPostExecute(aVoid);
            productRecyclerAdapter.notifyDataSetChanged();
        }
    }.execute();
}

}

Это мой адаптер вышестоящего класса (класса продукта) 

public class ProductRecyclerAdapter extends RecyclerView.Adapter<ProductRecyclerAdapter.ClientViewHolder> {

private List<GetSetProductsDetail> listProduct;
Context mContext;
RecyclerView mRecyclerView;
View itemView;

public ProductRecyclerAdapter(List<GetSetProductsDetail> listProduct, RecyclerView recyclerView) {
    this.listProduct =  listProduct;
    mRecyclerView = recyclerView;
}

@Override
public ClientViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    mContext = parent.getContext();
    itemView = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.items_products_table, parent, false);

    return new ClientViewHolder(itemView);
}


public class ClientViewHolder extends RecyclerView.ViewHolder {

    public TextView lblPName;
    public TextView lblTrade;
    public TextView lblRetail;
    public TextView lblSubCategary;
    public TextView lblCompany;
    RelativeLayout layout;

    public ClientViewHolder(View view) {
        super(view);

        lblPName =  view.findViewById(R.id.lblPName);
        lblTrade =  view.findViewById(R.id.lblTrade);
        lblRetail =  view.findViewById(R.id.lblRetail);
        lblSubCategary = view.findViewById(R.id.lblSubCategary);
        lblCompany =  view.findViewById(R.id.lblCompany);
        layout = view.findViewById(R.id.listprod);
    }
}

@Override
public void onBindViewHolder(ClientViewHolder holder, final int position) {

    holder.lblPName.setText(listProduct.get(position).getNAME());
    holder.lblTrade.setText(listProduct.get(position).getTRADE());
    holder.lblRetail.setText(listProduct.get(position).getRETAIL());
    holder.lblSubCategary.setText(listProduct.get(position).getSUBCATAGARY());
    holder.lblCompany.setText(listProduct.get(position).getCOMPANY());
    holder.layout.setOnLongClickListener(new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            displayingAlertDialog(position);
            return false;
        }
    });
}

@Override
public int getItemCount() {
    Log.v(ProductRecyclerAdapter.class.getSimpleName(), "" + listProduct.size());
    return listProduct.size();
}

private void displayingAlertDialog(final int position) {
    final GetSetClientRec getSetClientsDetail= new GetSetClientRec();
    AlertDialog.Builder builder = new AlertDialog.Builder(itemView.getContext());
    builder.setTitle("Choose Option");
    builder.setMessage("Add Product Invoice?");
    builder.setPositiveButton("Add", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            gotoInvoiceClass(listProduct.get(position));
            dialog.cancel();

        }
    });
    builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
        }
    });
    AlertDialog alert11 = builder.create();
    alert11.show();
}

private void gotoInvoiceClass(GetSetProductsDetail listProduct) {
    MainFragment main = (MainFragment) mContext;
    Toast.makeText(main, "Product Added " + listProduct, Toast.LENGTH_SHORT).show();
    main.selectTabProd(2, listProduct);
}

} ​​

Вот класс My Invoices (третий Viewpager; класс, в который данные загружаются автоматически) 

public class Invoices extends Fragment {

TextView EdtName;
EditText EditCurrDate;
EditText EdtCurrDate2;
TextView EdtNameProdInvoiuce;
RecyclerView recyclerViewProdInvoice;
InvoicesRecyclerAdapter invoicesRecyclerAdapter;
List<GetSetProductsDetail> listproductsInvoices;
DatabaseHelper databaseHelper;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    final View view = inflater.inflate(R.layout.invoice, container, false);

    recyclerViewProdInvoice=view.findViewById(R.id.recyclerviewinvoicesprod);

    databaseHelper = new DatabaseHelper(getActivity());

    listproductsInvoices = new ArrayList<>();



    String date_n = new SimpleDateFormat("MMM / dd / yyyy", Locale.getDefault()).format(new Date());

    EditCurrDate = view.findViewById(R.id.currdate);
    EdtCurrDate2 = view.findViewById(R.id.currdate1);
    EdtName = view.findViewById(R.id.txtclientname);
    EdtNameProdInvoiuce = view.findViewById(R.id.edtprodinvoice);

    MainFragment activity = (MainFragment) getActivity();
    String name = activity.getMyData();
    EdtName.setText(name);

    MainFragment activityprodinvoice = (MainFragment) getActivity();
    String namebltp = activityprodinvoice.getMyProdData();
    EdtNameProdInvoiuce.setText(namebltp);

    EdtName.setOnLongClickListener(new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
            builder.setTitle("Choose Option");
            builder.setMessage("Are You Sure You Want To Add New Client?");
            builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    MainFragment main = (MainFragment) getActivity();
                    main.fromThirdToSecond(0);
                    dialog.cancel();

                }
            });
            builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                }
            });
            AlertDialog alert11 = builder.create();
            alert11.show();
            return false;
        }
    });

    EditCurrDate.setText(date_n);

    EdtCurrDate2.setText(date_n);

    EditCurrDate.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Calendar mcurrentDate = Calendar.getInstance();
            int year = mcurrentDate.get(Calendar.YEAR);
            int month = mcurrentDate.get(Calendar.MONTH);
            int day = mcurrentDate.get(Calendar.DAY_OF_MONTH);

            DatePickerDialog mDatePicker = new DatePickerDialog(getActivity(), new DatePickerDialog.OnDateSetListener() {
                public void onDateSet(DatePicker datepicker, int selectedYear, int selectedMonth, int selectedDay) {
                    // TODO Auto-generated method stub

                    Log.e("Date Selected", "Month: " + selectedMonth + " Day: " + selectedDay + " Year: " + selectedYear);
                    EditCurrDate.setText((selectedMonth + 1) + "/" + selectedDay + "/" + selectedYear);
                }
            }, year, month, day);
            mDatePicker.setTitle("Select date");
            mDatePicker.show();
        }
    });

    EdtCurrDate2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Calendar mcurrentDate = Calendar.getInstance();
            int year1 = mcurrentDate.get(Calendar.YEAR);
            int month1 = mcurrentDate.get(Calendar.MONTH);
            int day1 = mcurrentDate.get(Calendar.DAY_OF_MONTH);

            DatePickerDialog mDatePicker = new DatePickerDialog(getActivity(), new DatePickerDialog.OnDateSetListener() {
                public void onDateSet(DatePicker datepicker, int selectedYear, int selectedMonth, int selectedDay) {
                    // TODO Auto-generated method stub

                    Log.e("Date Selected", "Month: " + selectedMonth + " Day: " + selectedDay + " Year: " + selectedYear);
                    EdtCurrDate2.setText((selectedMonth + 1) + "/" + selectedDay + "/" + selectedYear);
                }
            }, year1, month1, day1);
            mDatePicker.setTitle("Select date");
            mDatePicker.show();
        }
    });
    return view;
}

@Override
public void setUserVisibleHint(boolean isVisibleToUser) {
    super.setUserVisibleHint(isVisibleToUser);
    if (isResumed() && isVisibleToUser) {

        MainFragment activity = (MainFragment) getActivity();


        String namebltp = activity.getMyProdData();
        EdtNameProdInvoiuce.setText(namebltp);

        GetSetProductsDetail product = activity.listProduct;
        listproductsInvoices.add(product);

        invoicesRecyclerAdapter = new InvoicesRecyclerAdapter(listproductsInvoices,recyclerViewProdInvoice);
        recyclerViewProdInvoice.setItemAnimator(new DefaultItemAnimator());
        recyclerViewProdInvoice.setItemAnimator(new DefaultItemAnimator());
        recyclerViewProdInvoice.setLayoutManager(new LinearLayoutManager(getContext()));
        recyclerViewProdInvoice.setHasFixedSize(true);
        recyclerViewProdInvoice.setAdapter(invoicesRecyclerAdapter);
    }
}

}

Текущая ситуация загрузки данных в класс Invoices ..

Выберите элемент из второго класса виджета. Загружается в третий класс.Сдвиньте назад и снова откройте третий класс, данные снова загрузятся в третий viewpager Class

Это отображается на тосте, когда я выбираю элемент из класса Product и перехожу в третий класс VIewpager, Invoice

Изображение тоста

Я добавил тост Нравится 

    private void gotoInvoiceClass(GetSetProductsDetail listProduct) {
    MainFragment main = (MainFragment) mContext;
    Toast.makeText(main, "Product Added " + listProduct, Toast.LENGTH_SHORT).show();
    main.selectTabProd(2, listProduct);
}
...