问题
im trying to save the values of Edittext in the ListView and it works, but when there is a ListView too large, when Im editing 1 edittext, if I scroll the listview, another EditText is editing at the same time... I don't know what to do, I wasted 6hours, and got nothing. If some can help me, please.
This is the code of the getView of the Custom Listview
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final int position2 = position;
View v = convertView;
final ViewHolder holder;
if(v == null) {
LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.lista_item_prepedido, null);
holder = new ViewHolder();
holder.codi = (TextView) v.findViewById(R.id.NomProducte);
holder.nom = (EditText) v.findViewById(R.id.Preu);
holder.eliminar = (ImageButton) v.findViewById(R.id.delete);
View eliminarPrepedido = (ImageButton) v.findViewById(R.id.delete);
if(blocClients.equals("0"))
{
eliminarPrepedido.setVisibility(View.GONE);
holder.nom.setFocusable(false);
}
v.setTag(holder);
holder.nom.setText(items.get(position).getNom());
holder.nom.addTextChangedListener(new TextWatcher(){
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
// TODO Auto-generated method stub
}
@Override
public void onTextChanged(CharSequence s, int start,
int before, int count) {
items.get(position2).Nom = s.toString();
String preu = items.get(position2).Nom;
String nomproducte = items.get(position2).Codic;
int position = position2;
//mostrarMensaje("Valor: "+preu+" Nom Producte: "+nomproducte+" CodiClient: " +CodicClient+ " posicio: "+position);
baseDatos = openOrCreateDatabase(nombreBD, MODE_WORLD_WRITEABLE, null);
String sqlStr = "UPDATE estadistiques SET ultimpreu = '" +preu+"' WHERE codic_client='"+CodicClient+"' AND desc_article = '"+nomproducte+"' ";
baseDatos.execSQL(sqlStr);
try {
fnGlobal.CreaSincroFitxer(sqlStr);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
baseDatos.close();
}
});
} else {
holder = (ViewHolder) v.getTag();
}
holder.codi.setText(items.get(position).getCodic());
holder.eliminar.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
final int position = position2;
String CodicClient = null;
Bundle extras = getIntent().getExtras();
CodicClient = extras.getString("codiClientTab");
String nomproducte = items.get(position).Codic;
int Opcio = 1;
baseDatos = openOrCreateDatabase(nombreBD, MODE_WORLD_WRITEABLE, null);
String sqlStr = "DELETE FROM estadistiques WHERE codic_client ='"+CodicClient+"' AND desc_article ='"+nomproducte+"'" ;
baseDatos.execSQL(sqlStr);
try {
fnGlobal.CreaSincroFitxer(sqlStr);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
baseDatos.close();
notifyDataSetChanged();
onResume();
}
});
return v;
}
}
Custom XML item for listview
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/item"
android:layout_width="fill_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:background="@drawable/rounded_rectangle"
android:orientation="horizontal"
android:padding="6dip" >
<ImageButton
android:id="@+id/delete"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_marginRight="6dp"
android:layout_marginTop="15dp"
android:background="@drawable/delete" />
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<EditText
android:id="@+id/Preu"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/NomProducte"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="5dp"
android:background="@color/white"
android:ellipsize="end"
android:gravity="right"
android:inputType="numberDecimal"
android:singleLine="true"
android:text="nom"
android:textSize="18sp" />
<TextView
android:id="@+id/NomProducte"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/Preu"
android:layout_alignParentLeft="true"
android:layout_marginLeft="5dp"
android:layout_weight="0.16"
android:clickable="false"
android:ellipsize="end"
android:focusable="false"
android:focusableInTouchMode="false"
android:singleLine="true"
android:text="codi"
android:textColor="#000000"
android:textSize="18sp" />
</RelativeLayout>
</LinearLayout>
Thanks a lot! :)
回答1:
If I've understood your problem, it would be very hard to make this always behave in an easy way to understand. I would suggest that you change the way you implement this to have two TextViews in the ListView showing the two piece of information. When the editable one is tapped, bring up a Dialog to edit the information, which the user must then either accept or cancel before the move the listview, making it clear what is going on. In summary, I suggest:
- NomProducte become a TextView which is set up as now.
- Catch onTouch of NomProducte to bring up a dialog showing the image, Preu text as TextView and NomProducte text as an EditText.
- The user enters the data into that one.
- OK -> Accept the new text actions
- Cancel -> Ignore the new text actions.
来源：https://stackoverflow.com/questions/15408464/how-to-implement-listener-text-changes-in-custom-listview-with-edittexts