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I am making a system with tabbed layout and with Recycler view, in the first tab are the products, I click on a place the quantity and it marks the product. When I go to the third tab, the marking on the product goes away, how do I make it stop?
This is the tabbed layout:
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"
app:srcCompat="@drawable/seta"
android:tint="#FFF"
android:layout_marginBottom="20dp"
android:layout_gravity="center|bottom"
app:fabSize="normal"/>
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="@dimen/appbar_padding_top"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_weight="1"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="@style/AppTheme.PopupOverlay"
app:title="@string/app_name">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TabItem
android:id="@+id/tabItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/tab_text_1" />
<android.support.design.widget.TabItem
android:id="@+id/tabItem2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/tab_text_2" />
<android.support.design.widget.TabItem
android:id="@+id/tabItem3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/tab_text_3" />
</android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
Your class:
package com.example.gabriel.agilmobile;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import com.example.gabriel.agilmobiel.R;
import com.example.gabriel.agilmobile.RecyclerView.ClienteRecycler;
import com.example.gabriel.agilmobile.RecyclerView.ProdutoRecycler;
import java.util.ArrayList;
public class CarrinhoActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
/**
* The {@link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {@link FragmentPagerAdapter} derivative, which will keep every
* loaded fragment in memory. If this becomes too memory intensive, it
* may be best to switch to a
* {@link android.support.v4.app.FragmentStatePagerAdapter}.
*/
private SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {@link ViewPager} that will host the section contents.
*/
private ViewPager mViewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_carrinho);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setAdapter(mSectionsPagerAdapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
mViewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.addOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(mViewPager));
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
GlobalVariable g = new GlobalVariable();
System.out.println(g.getItemSelecionado().toString());
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_carrinho, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
public PlaceholderFragment() {
}
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = null;
//Produto
if(getArguments().getInt(ARG_SECTION_NUMBER)==1) {
rootView = inflater.inflate(R.layout.fragment_produto, container, false);
RecyclerView rv = rootView.findViewById(R.id.carrinho_produto);
GlobalVariable g = new GlobalVariable();
RecyclerView.LayoutManager mRv = new GridLayoutManager(this.getContext(), 2);
ProdutoRecycler adapter = new ProdutoRecycler(this.getContext(), g.getIdProduto(), g.getDescProduto(), g.getPrcVisProduto(), g.getNomeGrupo());
rv.setAdapter(adapter);
rv.setLayoutManager(mRv);
}
//Cliente
else if(getArguments().getInt(ARG_SECTION_NUMBER)==2){
ArrayList<String> cpfcpnj = new ArrayList<>();
GlobalVariable g = new GlobalVariable();
rootView = inflater.inflate(R.layout.fragment_cliente, container, false);
for (int i=0; i<g.getIdCliente().size(); i++){
if (!g.getCPFCliente().get(i).equals("null") && !g.getCPFCliente().get(i).equals(null) && !g.getCPFCliente().get(i).equals("")){
cpfcpnj.add(g.getCPFCliente().get(i));
}
else{
cpfcpnj.add(g.getCNPJCliente().get(i));
}
}
RecyclerView rv =rootView.findViewById(R.id.carrinho_cliente);
ClienteRecycler adapter = new ClienteRecycler(this.getContext(), g.getIdCliente() ,g.getCliente(), cpfcpnj);
rv.setAdapter(adapter);
rv.setLayoutManager(new LinearLayoutManager(this.getContext()));
}
//Pagamento
else if(getArguments().getInt(ARG_SECTION_NUMBER)==3){
rootView = inflater.inflate(R.layout.fragment_pagamento, container, false);
Spinner spFormaPag = rootView.findViewById(R.id.spnFormaPagamento);
Spinner spTiposFrete = rootView.findViewById(R.id.spnTiposFrete);
Spinner spTiposOper = rootView.findViewById(R.id.spnTiposOperacoes);
TextView subTotal = rootView.findViewById(R.id.subtotal);
TextView total = rootView.findViewById(R.id.total);
GlobalVariable g = new GlobalVariable();
subTotal.setText(String.valueOf(g.getSubTotal()));
total.setText(String.valueOf(g.getTotal()));
ArrayAdapter<String> stFormaPag = new ArrayAdapter<>(getContext(), android.R.layout.simple_spinner_item, g.getNomeFormaPagamento());
ArrayAdapter<CharSequence> stTiposFrete= ArrayAdapter.createFromResource(getContext(),R.array.tiposFrete, android.R.layout.simple_spinner_item);
ArrayAdapter<CharSequence> stTiposOper= ArrayAdapter.createFromResource(getContext(),R.array.tiposOperacao, android.R.layout.simple_spinner_item);
stTiposFrete.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
stFormaPag.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
stTiposOper.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spTiposFrete.setAdapter(stFormaPag);
spFormaPag.setAdapter(stTiposFrete);
spTiposOper.setAdapter(stTiposOper);
spTiposFrete.setOnItemSelectedListener((AdapterView.OnItemSelectedListener) this.getContext());
spFormaPag.setOnItemSelectedListener((AdapterView.OnItemSelectedListener) this.getContext());
spTiposOper.setOnItemSelectedListener((AdapterView.OnItemSelectedListener) this.getContext());
}
return rootView;
}
}
/**
* A {@link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a PlaceholderFragment (defined as a static inner class below).
return PlaceholderFragment.newInstance(position + 1);
}
@Override
public int getCount() {
// Show 3 total pages.
return 3;
}
}}
Fragment of the product tab:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.RecyclerView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/carrinho_produto"></android.support.v7.widget.RecyclerView>
</RelativeLayout>
Product class:
package com.example.gabriel.agilmobile.RecyclerView;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Color;
import android.support.annotation.NonNull;
import android.support.v7.app.AlertDialog;
import android.support.v7.widget.CardView;
import android.support.v7.widget.RecyclerView;
import android.text.InputType;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.example.gabriel.agilmobiel.R;
import com.example.gabriel.agilmobile.GlobalVariable;
import java.util.ArrayList;
public class ProdutoRecycler extends RecyclerView.Adapter<ProdutoRecycler.MyViewHolder> {
private static final String TAG = "ProdutoRecycler";
private ArrayList<String> codigo = new ArrayList<>();
private ArrayList<String> produto = new ArrayList<>();
private ArrayList<String> preco = new ArrayList<>();
private ArrayList<String> grupo = new ArrayList<>();
LinearLayout cd;
private Context context;
public ProdutoRecycler(Context context, ArrayList<String> codigo, ArrayList<String> produto, ArrayList<String> preco, ArrayList<String> grupo){
this.codigo = codigo;
this.produto = produto;
this.preco = preco;
this.grupo = grupo;
this.context = context;
}
@NonNull
@Override
public MyViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
LinearLayout txt = (LinearLayout) LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.produto_recycler,viewGroup, false);
ProdutoRecycler.MyViewHolder myViewHolder = new ProdutoRecycler.MyViewHolder(txt);
return myViewHolder;
}
@Override
public void onBindViewHolder(@NonNull ProdutoRecycler.MyViewHolder Holder, final int i) {
Holder.codigo.setText(codigo.get(i));
Holder.produto.setText(produto.get(i));
Holder.preco.setText(preco.get(i));
Holder.grupo.setText(grupo.get(i));
Holder.cardView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
cd = v.findViewById(R.id.LLcardProduto);
final GlobalVariable g = new GlobalVariable();
int j=0;
if (g.getItemSelecionado().size()==0){
final EditText txt = new EditText(context);
final AlertDialog.Builder alertDialogBuilder1 = new AlertDialog.Builder(context);
// set prompts.xml to alertdialog builder
alertDialogBuilder1.setMessage("Informe a quantidade");
txt.setInputType(InputType.TYPE_CLASS_NUMBER);
alertDialogBuilder1.setView(txt);
// set dialog message
alertDialogBuilder1.setCancelable(false).setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
g.setItemSelecionado(codigo.get(i));
cd.setBackgroundResource(R.drawable.selector);
cd.setAlpha((float) 0.75);
g.setQtdItem(txt.getText().toString());
float soma = 0;
for (int x=0; x<g.getItemSelecionado().size(); x++) {
soma += Float.parseFloat(g.getPrcVisProduto().get(i))*Float.parseFloat(g.getQtdItem().get(x));
}
g.setSubTotal(soma);
}
});
alertDialogBuilder1.setCancelable(false).setNegativeButton("Cancelar", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
// create alert dialog
AlertDialog alertDialog1 = alertDialogBuilder1.create();
// show it
alertDialog1.show();
System.out.println(1);
}else if(!g.getItemSelecionado().contains(codigo.get(i))){
final EditText txt = new EditText(context);
final AlertDialog.Builder alertDialogBuilder1 = new AlertDialog.Builder(context);
// set prompts.xml to alertdialog builder
alertDialogBuilder1.setMessage("Informe a quantidade");
txt.setInputType(InputType.TYPE_CLASS_NUMBER);
alertDialogBuilder1.setView(txt);
// set dialog message
alertDialogBuilder1.setCancelable(false).setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
g.setItemSelecionado(codigo.get(i));
cd.setBackgroundResource(R.drawable.selector);
cd.setAlpha((float) 0.75);
g.setQtdItem(txt.getText().toString());
float soma = 0;
for (int x=0; x<g.getItemSelecionado().size(); x++) {
soma += Float.parseFloat(g.getPrcVisProduto().get(i))*Float.parseFloat(g.getQtdItem().get(x));
}
g.setSubTotal(soma);
}
});
alertDialogBuilder1.setCancelable(false).setNegativeButton("Cancelar", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
// create alert dialog
AlertDialog alertDialog1 = alertDialogBuilder1.create();
// show it
alertDialog1.show();
//
}
else{
System.out.println(g.getItemSelecionado().contains(codigo.get(i)));
for (int x=0; x<g.getItemSelecionado().size();x++){
if (g.getItemSelecionado().get(x)==codigo.get(i)){
g.getItemSelecionado().remove(x);
g.getQtdItem().remove(x);
cd.setBackgroundColor(Color.parseColor("#FFFFFF"));
cd.setAlpha((float) 1);
}
}
float soma = 0;
for (int x=0; x<g.getItemSelecionado().size(); x++) {
soma += Float.parseFloat(g.getPrcVisProduto().get(i))*Float.parseFloat(g.getQtdItem().get(x));
}
g.setSubTotal(soma);
}
}
});
}
@Override
public int getItemCount() {
return produto.size();
}
public static class MyViewHolder extends RecyclerView.ViewHolder{
TextView codigo;
TextView produto;
TextView preco;
TextView grupo;
LinearLayout layout;
CardView cardView;
public MyViewHolder(@NonNull View itemView) {
super(itemView);
codigo = itemView.findViewById(R.id.codigo);
produto = itemView.findViewById(R.id.produto);
preco = itemView.findViewById(R.id.preco);
grupo = itemView.findViewById(R.id.grupo);
layout = itemView.findViewById(R.id.layout_produto);
cardView = itemView.findViewById(R.id.cardProduto);
}
}
}
Fragment of the Payment:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" android:layout_margin="20dp">
<Spinner
android:id="@+id/spnFormaPagamento"
android:layout_width="match_parent"
android:layout_height="38dp"
android:layout_marginBottom="20dp"></Spinner>
<Spinner
android:id="@+id/spnTiposFrete"
android:layout_width="match_parent"
android:layout_height="38dp"
android:layout_marginBottom="20dp"></Spinner>
<Spinner
android:id="@+id/spnTiposOperacoes"
android:layout_width="match_parent"
android:layout_height="38dp"
android:layout_marginBottom="20dp"></Spinner>s
<EditText
android:id="@+id/desconto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="20dp"
android:hint="Desconto"
android:inputType="number" />
<EditText
android:id="@+id/frete"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="20dp"
android:hint="Frete"
android:inputType="number" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/subtotal"
android:layout_marginBottom="20dp"
android:text="Sub-Total"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/total"
android:layout_marginBottom="20dp"
android:text="Total"/>
</LinearLayout>
https://answall.com/questions/344934/como-evitar-o-destroyer-do-layout-no-tabbed-layout-quando-mudado-a-aba/345301#345301
– Eduardo Dornel