【发布时间】：2015-04-07 17:36:10
【问题描述】：
我是 android 的初学者。我有一个 ListView，其中包含一个微调器、edittext 和一个用于删除该行的图像按钮。微调器是从列表中填充的。有一个添加按钮可以将这些项目添加到列表视图中每次单击时。如果我在微调器中选择一个项目，那么我需要从该列表视图中的所有其他微调器中删除该项目，并且当我删除选定的微调器行或更改微调器中的选定项目时，这些项目变得可见。为简单起见，我的 Spinner 填充了以下数据：
{"data1", "data2", "data3", "data4", "data5"};
例如，如果我选择我的第一个 ListView 的 Spinner 值为“data3”，然后“data3”条目从所有其他 ListView Spinner 中消失，并且只有当我在第一个 listview 微调器中更改所选值时才会出现或删除该行，对于每个 ListView 微调器类似。如何执行此操作？有人请帮助我。下面是我的代码。
receipt_trans.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/LinLay3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_marginTop="5dp"
android:orientation="horizontal" >
<TextView
android:id="@+id/txtGrossAmt"
android:layout_width="95dp"
android:layout_height="wrap_content"
android:text="Gross amount :"
android:textColor="#000" />
<EditText
android:id="@+id/edtGrossAmt"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:background="@drawable/border"
android:focusableInTouchMode="false"
android:layout_toRightOf="@+id/txtAccount" />
<Button
android:id="@+id/btnAddRow"
android:layout_width="wrap_content"
android:layout_height="25dp"
android:layout_marginLeft="10dp"
android:text="Add Row"
android:layout_toRightOf="@+id/edtGrossAmt" />
</LinearLayout>
<LinearLayout
android:id="@+id/LinLay4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp"
android:orientation="horizontal" >
<TextView
android:id="@+id/txtFundStores"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_marginLeft="40dp"
android:text="Fund Stores"
android:textColor="#000" />
</LinearLayout>
<ListView
android:id="@+id/lstFundStore"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp" >
</ListView>
</LinearLayout>
fundstore_row.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<Spinner
android:id="@+id/spnAccount"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_alignBottom="@+id/imageButton1"
android:layout_marginBottom="15dp"
android:layout_toRightOf="@+id/textView1" />
<EditText
android:id="@+id/edtAccAmount"
android:layout_width="0sp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:inputType="numberDecimal"
android:textAppearance="?android:attr/textAppearanceSmall"/>
<ImageButton
android:id="@+id/imgDel"
android:layout_width="20sp"
android:layout_height="fill_parent"
android:contentDescription="delete"
android:src="@drawable/delete2" />
</LinearLayout>
ReceiptTransaction.java:
public class ReceiptTransaction extends Activity{
RestTemplate restTemplate=new RestTemplate();
String constr="http://192.168.1.14:8080/ServPro/stock/";
ListView lstFund;
Button btnAddRw;
private FundStoreAdapter adapter;
ArrayList<COAAccount> subList;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.receipt_trans);
lstFund=(ListView) findViewById(R.id.lstFundStore);
btnAddRw=(Button) findViewById(R.id.btnAddRow);
setFundStore();
setDeduction();
btnAddRw.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
adapter.add(new FundReceipt(subList.get(0), 0.0f));
}
});
}
public void setFundStore(){
String accList=restTemplate.getForObject(constr+"getAllCBOnly", String.class);
Gson gson = new Gson(); // Or use new GsonBuilder().create();
CoaAccountList dropCoaList = gson.fromJson(accList, CoaAccountList.class);
subList=new ArrayList<COAAccount>();
COAAccount newAccount = new COAAccount();
newAccount.setFunds(-1, -2, "Select...", "select", "SE",0.0f);
subList.add(newAccount);
ArrayList<COAAccount> listItem=(ArrayList<COAAccount>) dropCoaList.getCoaList();
for(COAAccount addCoa:listItem){
subList.add(addCoa);
}
adapter=new FundStoreAdapter(ReceiptTransaction.this, R.layout.fundstore_row, new ArrayList<FundReceipt>(),subList);
lstFund.setAdapter(adapter);
adapter.add(new FundReceipt(subList.get(0), 0.0f));
}
public void setDeduction(){
}
}
FundStoreAdapter.java：
public class FundStoreAdapter extends ArrayAdapter<FundReceipt> {
protected static final String LOG_TAG = FundStoreAdapter.class.getSimpleName();
private final Context context;
private final int resourceID;
private List<FundReceipt> items;
private ArrayList<COAAccount> list;
public FundStoreAdapter(Context context, int resource, List<FundReceipt> items, ArrayList<COAAccount> subList) {
super(context, resource,items);
this.context = context;
this.resourceID = resource;
this.items=items;
this.list=subList;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
FundStoreHolder holder = null;
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
View rowView = inflater.inflate(resourceID, parent, false);
holder=new FundStoreHolder();
holder.fundRecpt=items.get(position);
holder.imgDeleteFund=(ImageButton) rowView.findViewById(R.id.imgDel);
holder.imgDeleteFund.setTag(holder.fundRecpt);
removeRow(holder);
holder.edtAmount=(EditText) rowView.findViewById(R.id.edtAccAmount);
setValueTextListeners(holder);
holder.spnAcct=(Spinner) rowView.findViewById(R.id.spnAccount);
setNameTextChangeListener(holder);
rowView.setTag(holder);
setupItem(holder);
return rowView;
}
private void removeRow(FundStoreHolder holder) {
holder.imgDeleteFund.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
FundReceipt itemToRemove = (FundReceipt)v.getTag();
remove(itemToRemove);
}
});
}
private void setupItem(FundStoreHolder holder) {
holder.edtAmount.setText(String.valueOf(holder.fundRecpt.getAmount()));
//ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, list);
ArrayAdapter<COAAccount> dataAdapter =new ArrayAdapter<COAAccount>(context, android.R.layout.simple_spinner_item,list);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
holder.spnAcct.setAdapter(dataAdapter);
holder.spnAcct.setSelection(dataAdapter.getPosition(holder.fundRecpt.getSelAcct()));
}
public static class FundStoreHolder{
FundReceipt fundRecpt;
Spinner spnAcct;
EditText edtAmount;
ImageButton imgDeleteFund;
}
private void setNameTextChangeListener(final FundStoreHolder holder) {
holder.spnAcct.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
// TODO Auto-generated method stub
holder.fundRecpt.setSelAcct((COAAccount) parent.getSelectedItem());
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// TODO Auto-generated method stub
}
});
}
private void setValueTextListeners(final FundStoreHolder holder) {
holder.edtAmount.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
try{
holder.fundRecpt.setAmount(Float.parseFloat(s.toString()));
}catch (NumberFormatException e) {
Log.e(LOG_TAG, "error reading float value: " + s.toString());
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) { }
@Override
public void afterTextChanged(Editable s) { }
});
}
}
FundReceipt.java：
public class FundReceipt implements Serializable {
private static final long serialVersionUID = -5435670920302756945L;
private Float amount = 0.0f;
private COAAccount selAcct;
public FundReceipt(COAAccount selAcct, Float amount) {
this.setAmount(amount);
this.setSelAcct(selAcct);
}
public Float getAmount() {
return amount;
}
public void setAmount(Float amount) {
this.amount = amount;
}
public COAAccount getSelAcct() {
return selAcct;
}
public void setSelAcct(COAAccount selAcct) {
this.selAcct = selAcct;
}
}
【问题讨论】：