Recyclerview con due bottoni

[Fabriziocolazzo]

Salve, vorrei creare un recyclerview con all interno una textview e due bottoni..
Il mio stato attuale...la recycleview é caricata tramite una query sqlite e visualizza solo la textview con i dati caricati. Ora vorrei inserire due bottoni al suo interno, in modo da ottenere le righe con la textview centrata e i due bottoni.. Uno a sinistra e l altro a destra..sapete aiutarmi?

[Crotan]

Ripeto per l'ennesima volta: devi usare un custom adapter.

Android's RecyclerView and CardView tutorial

[Fabriziocolazzo]

l'adapter lho creato.
public class Adapter_principale extends RecyclerView.Adapter<Row_view_holder_principale> {<br /> Context context;<br /> ArrayList<Row_principale>itemsList;<br /> <br /> public Adapter_principale(Context context, ArrayList<Row_principale> itemsList) {<br /> this.context = context;<br /> this.itemsList = itemsList;<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public int getItemCount() {<br /> if (itemsList == null) {<br /> return 0;<br /> } else {<br /> return itemsList.size();<br /> }<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public Row_view_holder_principale onCreateViewHolder(ViewGroup viewGroup, int position) {<br /> LayoutInflater inflater = LayoutInflater.from(viewGroup.getContext());<br /> View view = inflater.inflate(R.layout.row_principale, null);<br /> Row_view_holder_principale viewHolder = new Row_view_holder_principale(view);<br /> return viewHolder;<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public void onBindViewHolder(Row_view_holder_principale row_view_holder, int position) {<br /> Row_principale items = itemsList.get(position);<br /> row_view_holder.titolo.setText(String.valueOf(items.getTitolo()));<br /> row_view_holder.numero.setText(String.valueOf(items.getNumero()));<br /> <br /> <br /> }<br /> <br /> <br /> }

[Crotan]

Ti basta aggiungere le Views di cui necessiti nel layout "row_principale".

[Fabriziocolazzo]

ho modificato la view.. ho due textview e due FloatingActionButton
sono riuscito a caricare la textview con i valori presi tramite una query da una tabella del db
ora ho dei problemi..
1)la seconda textView deve essere caricata tramite un'altra query che prende però gli id delle righe inserite tramite la query che carica la prima textview

questa è la prima query
Cursor r = db.rawQuery("SELECT * FROM contatore",null);
(r.getString(0)); è l'id che m serve
items1.setTitolo(r.getString(1)); //quello che deve esserci nella textview1
mi stampa i risultati nella textview1

seconda query
final Cursor r = db.rawQuery("SELECT numero FROM promemoria WHERE idcont=? ", new String[]{(r.getString(0))}
carica seconda textview
e stampare i dati.


2)risolto il punto uno come gestisco il click sulle apposite FloatingActionButton e tetxview?
posto il mio codice.. ps: non cerco qualcuno che mi stenda il codice.. ma che mi aiuti a crearlo.
activity
<br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />

righe recycleview
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righe java
<br /> public class Row_principale {<br /> private String titolo;<br /> private String numero;<br /> <br /> public String getTitolo() {<br /> return titolo;<br /> }<br /> <br /> public void setTitolo(String titolo) {<br /> this.titolo = titolo;<br /> }<br /> <br /> public String getNumero() {<br /> return numero;<br /> }<br /> <br /> public void setNumero(String numero) {<br /> this.numero = numero;<br /> }<br /> <br /> }

Row_view_holder_principale
public class Row_view_holder_principale extends RecyclerView.ViewHolder {<br /> <br /> TextView titolo;<br /> TextView numero;<br /> <br /> public Row_view_holder_principale(View view) {<br /> super(view);<br /> this.titolo = (TextView) view.findViewById(R.id.textViewList);<br /> this.numero = (TextView) view.findViewById(R.id.numero);<br /> }<br /> }
adapter(ho provato a gestire il click li.. ma h problemi con il db e gli intent
<br /> public class Adapter_principale extends RecyclerView.Adapter {<br /> Context context;<br /> ArrayListitemsList;<br /> <br /> <br /> public Adapter_principale(Context context, ArrayList itemsList) {<br /> this.context = context;<br /> this.itemsList = itemsList;<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public int getItemCount() {<br /> if (itemsList == null) {<br /> return 0;<br /> } else {<br /> return itemsList.size();<br /> }<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public Row_view_holder_principale onCreateViewHolder(ViewGroup viewGroup, int position) {<br /> LayoutInflater inflater = LayoutInflater.from(viewGroup.getContext());<br /> View v = inflater.inflate(R.layout.row_principale, null);<br /> Row_view_holder_principale viewHolder = new Row_view_holder_principale(v);<br /> <br /> TextView textView = (TextView)v.findViewById(R.id.textViewList);<br /> //click listView(inserisci in nome il valore dell item cliccato.. tramite una query si ottiene l'id.. passo i dati(id e nome) in contatore<br /> textView.setOnClickListener(new View.OnClickListener() {<br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public void onClick(View v) {<br /> v.setBackgroundColor(0x8BC7DB); //colore item<br /> TextView lblListHeader = (TextView) v.findViewById(R.id.textViewList);<br /> String nome = lblListHeader.getText().toString();<br /> String[] selectionArg = {nome};<br /> Cursor g = db.rawQuery("SELECT _id FROM contatore WHERE titolo = ?", selectionArg);<br /> while (g.moveToNext()) {<br /> //dati da passare (nome e id della riga premuta) a Contatore<br /> String id = g.getString(0);//id<br /> intent = new Intent(getApplicationContext(), Contatore.class);<br /> String Salsiccia = getPackageName();<br /> intent.putExtra(Salsiccia + ".myString", nome); //inseriamo i dati nell'intent<br /> intent.putExtra(Salsiccia + ".myInt", id);<br /> startActivity(intent); //facciamo partire la seconda activity<br /> }<br /> }<br /> });<br /> <br /> <br /> return viewHolder;<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public void onBindViewHolder(Row_view_holder_principale row_view_holder, int position) {<br /> Row_principale items = itemsList.get(position);<br /> row_view_holder.titolo.setText(String.valueOf(items.getTitolo()));<br /> row_view_holder.numero.setText(String.valueOf(items.getNumero()));<br /> }<br /> <br /> <br /> <br /> }
main java
<br /> public class MainActivity extends AppCompatActivity {<br /> //Vatiabili Globali<br /> DbHelper helper =new DbHelper(this);<br /> SQLiteDatabase db;<br /> <br /> RecyclerView recyclerView;<br /> ArrayList itemsList = new ArrayList();<br /> Adapter_principale adapter;<br /> TextView textView;<br /> Intent intent; // x passare i dati tra activity<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> protected void onCreate(Bundle savedInstanceState) {<br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.activity_main);<br /> //variabili<br /> Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);<br /> setSupportActionBar(toolbar);<br /> // getSupportActionBar().setTitle(R.string.app_name); //Titolo In Toolbar<br /> db= helper.getReadableDatabase();//sola lettura x fare query<br /> <br /> recyclerView = (RecyclerView) findViewById(R.id.recyclerView);<br /> recyclerView.setLayoutManager(new LinearLayoutManager(this));<br /> adapter = new Adapter_principale(MainActivity.this, getTitolo());<br /> recyclerView.setAdapter(adapter);<br /> textView = (TextView) findViewById(R.id.textViewList);<br /> <br /> <br /> <br /> <br /> //entra in Activity Add<br /> FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);<br /> fab.setOnClickListener(new View.OnClickListener() {<br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public void onClick(View view) {<br /> intent = new Intent(getApplicationContext(), Add.class)<br /> .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);<br /> startActivity(intent); //Snackbar.make(view, "Contatore aggiunto con successo!", Snackbar.LENGTH_LONG) .setAction("Action", null).show();<br /> }<br /> });<br /> <br /> }<br /> <br /> public ArrayList getTitolo()<br /> {<br /> <br /> ArrayList it = new ArrayList();<br /> final SQLiteDatabase db = helper.getReadableDatabase();//sola lettura x fare query<br /> Cursor r = db.rawQuery("SELECT titolo FROM contatore",null);<br /> r.moveToFirst();<br /> for (int i = 0; i < r.getCount(); i++) {<br /> Row_principale items1 = new Row_principale();<br /> // (r.getString(1));//numero<br /> //(r.getString(2));//data<br /> items1.setTitolo(r.getString(0));<br /> it.add(items1);<br /> r.moveToNext();<br /> }<br /> return it;<br /> <br /> }<br /> }<br />

Crotan spero di non aver commesso errori.

[Fabriziocolazzo]

ho modificato il codice in questo modo ma ottengo un errore
Error:(75, 21) error: method setAdapter in class RecyclerView cannot be applied to given types;<br /> required: Adapter<br /> found: Adapter_principale<br /> reason: actual argument Adapter_principale cannot be converted to Adapter by method invocation conversion

main<br /> public class MainActivity extends AppCompatActivity {<br /> //Vatiabili Globali<br /> <br /> DbHelper helper =new DbHelper(this);<br /> SQLiteDatabase db;<br /> RecyclerView recyclerView;<br /> Intent intent; // x passare i dati tra activity<br /> Map<Integer, myCustomObject> listp = new TreeMap<>();<br /> Adapter_principale adapter_principale = new Adapter_principale(this, R.layout.row_principale, listp);<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> protected void onCreate(Bundle savedInstanceState) {<br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.activity_main);<br /> //variabili<br /> Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);<br /> setSupportActionBar(toolbar);<br /> // getSupportActionBar().setTitle(R.string.app_name); //Titolo In Toolbar<br /> db= helper.getReadableDatabase();//sola lettura x fare query<br /> <br /> recyclerView = (RecyclerView) findViewById(R.id.recyclerView);<br /> recyclerView.setLayoutManager(new LinearLayoutManager(this));<br /> <br /> final Map<Integer, myCustomObject> listp = new TreeMap<>();<br /> final Adapter_principale adapter_principale = new Adapter_principale(this, R.layout.row_principale, listp);<br /> <br /> //nome ingrediente per salsiccia<br /> int i=0;<br /> Cursor r = db.rawQuery("SELECT * FROM contatore",null);<br /> while(r.moveToNext()) {<br /> r.moveToNext();<br /> i++;<br /> listp.put(i, new myCustomObject(r.getString(1), i));<br /> }<br /> int j=0;<br /> Cursor a = db.rawQuery("SELECT * FROM promemoria WHERE idcont=?", new String[]{r.getString(0)});<br /> while (a.moveToNext()) {<br /> j++;<br /> if(listp.containsKey(j))<br /> listp.get(j).setText2(a.getInt(1));<br /> // listp.put(2, new myCustomObject( null,a.getInt(0) * ValoreIntero));<br /> <br /> }<br /> adapter_principale.clear();<br /> adapter_principale.notifyDataSetChanged();<br /> adapter_principale.add(listp);<br /> <br /> recyclerView.setAdapter(adapter_principale);<br /> <br /> <br /> <br /> //entra in Activity Add<br /> FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);<br /> fab.setOnClickListener(new View.OnClickListener() {<br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public void onClick(View view) {<br /> intent = new Intent(getApplicationContext(), Add.class)<br /> .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);<br /> startActivity(intent); //Snackbar.make(view, "Contatore aggiunto con successo!", Snackbar.LENGTH_LONG) .setAction("Action", null).show();<br /> }<br /> });<br /> <br /> }<br /> <br /> }

<br /> class myCustomObject {<br /> private String text1;<br /> private int text2;<br /> <br /> public String getText1(){<br /> <br /> return this.text1;<br /> }<br /> public void setText1(String text1){<br /> <br /> this.text1= text1;<br /> }<br /> <br /> public int getText2(){<br /> return this.text2;<br /> }<br /> public void setText2(int text2){<br /> this.text2= text2;<br /> }<br /> <br /> public myCustomObject(String text1, int text2) {<br /> this.text1 = text1;<br /> this.text2 = text2;<br /> }<br /> <br /> <br /> }<br /> <br /> public class Adapter_principale extends BaseAdapter {<br /> private ArrayList mapData;<br /> Context context;<br /> int layoutResourceId;<br /> <br /> Holder holder;<br /> <br /> public Adapter_principale(Context context, int layoutResourceId, Map<Integer, myCustomObject> arList) {<br /> this.layoutResourceId = layoutResourceId;<br /> this.context = context;<br /> <br /> mapData = new ArrayList();<br /> mapData.addAll(arList.entrySet());<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public int getCount() {<br /> return mapData.size();<br /> }<br /> <br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public Map.Entry<Integer, myCustomObject> getItem(int position) {<br /> return (Map.Entry) mapData.get(position);<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public long getItemId(int position) {<br /> return 0;<br /> }<br /> <br /> @<a rel="nofollow" href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public View getView(int position, View view, ViewGroup parent) {<br /> if(view == null) {<br /> holder = new Holder();<br /> <br /> LayoutInflater inflater = ((Activity)context).getLayoutInflater();<br /> view = inflater.inflate(layoutResourceId, parent, false);<br /> <br /> holder.textView = (TextView)view.findViewById(R.id.textViewList);<br /> holder.textView2 = (TextView)view.findViewById(R.id.numero);<br /> <br /> view.setTag(holder);<br /> } else {<br /> holder = (Holder)view.getTag();<br /> }<br /> <br /> Map.Entry<Integer, myCustomObject> item = getItem(position);<br /> holder.textView.setText(item.getValue().getText1());<br /> holder.textView2.setText(String.valueOf(item.getValue().getText2()));<br /> <br /> return view;<br /> }<br /> public void add(Map<Integer, myCustomObject> map) {<br /> mapData.addAll(map.entrySet());<br /> }<br /> public void clear() {<br /> mapData.clear();<br /> }<br /> <br /> }<br /> class Holder {<br /> TextView textView, textView2;<br /> }<br />