起初我在我的Activity中使用了ListView但是我无法在我的edittext中解决我的问题，当滚动列表视图时，值正在消失。因此，我将其更改为回收站视图，因为有人说它将在edittext中解决我的问题，但事实并非如此。当我滚动我的Recycler视图时，我的edittext的值会丢失。
这是我的适配器代码：
public class RecyclerView_InvoiceList extends RecyclerView.Adapter<RecyclerView_InvoiceList.MyViewHolder> {
private Context mContext;
private List<InvoiceList> invoiceLists;
private float TotalPaymentAmount;
DBHelper dbHelper;
int maxPaymentLineID;
String maxPaymentID;
String indicator;
private final int requestCode = 20;
String invoiceStatusValue, okay;
float invAmountDue = 0;
float invAmountPaid = 0;
public RecyclerView_InvoiceList(Context mContext, List<InvoiceList> invoiceLists, Float totalPaymentAmount, String maxPaymentID
, String okay, String Indicator, DBHelper dbHelper) {
this.mContext = mContext;
this.invoiceLists = invoiceLists;
this.TotalPaymentAmount = totalPaymentAmount;
this.maxPaymentID = maxPaymentID;
this.okay = okay;
this.indicator = Indicator;
this.dbHelper = dbHelper;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// infalte the item Layout
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.sales_invoice_custom, parent, false);
// set the view's size, margins, paddings and layout parameters
MyViewHolder vh = new MyViewHolder(v); // pass the view to View Holder
return vh;
}
@Override
public void onBindViewHolder(final MyViewHolder holder, int position) {
holder.SelectInvoiceCB.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int getPosition = (Integer) buttonView.getTag(); // Here we get the position that we have set for the checkbox using setTag.
invoiceLists.get(getPosition).setSelectInvoice(buttonView.isChecked()); // Set the value of checkbox to maintain its state.
}
});
holder.PayFull.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int getPosition = (Integer) buttonView.getTag(); // Here we get the position that we have set for the checkbox using setTag.
invoiceLists.get(getPosition).setPayFull(buttonView.isChecked()); // Set the value of checkbox to maintain its state.
if (holder.PayFull.isChecked()) {
holder.PayPartial.setChecked(false);
}
}
});
holder.PayPartial.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int getPosition = (Integer) buttonView.getTag(); // Here we get the position that we have set for the checkbox using setTag.
invoiceLists.get(getPosition).setPayPartial(buttonView.isChecked()); // Set the value of checkbox to maintain its state.
if (holder.PayPartial.isChecked()) {
holder.PayFull.setChecked(false);
}
}
});
Calendar c = Calendar.getInstance();
SimpleDateFormat df1 = new SimpleDateFormat("yyyy-MM-dd");
final String formattedDate = df1.format(c.getTime());
try {
dbHelper.openDataBase();
// LAYOUT VISIBILITY FOR CREDIT MEMOs
try {
if (invoiceLists.get(position).getCredit_Memo_ID().equals(null) || invoiceLists.get(position).getCredit_Memo_ID().isEmpty()
|| invoiceLists.get(position).getCredit_Memo_ID().length() < 1
|| invoiceLists.get(position).getCredit_Memo_ID().trim().equals("")){
holder.CreditMemoID.setVisibility(View.GONE);
holder.CreditMemoDate.setVisibility(View.GONE);
holder.CreditMemoReason.setVisibility(View.GONE);
holder.LL2.setVisibility(View.GONE);
holder.LL3.setVisibility(View.GONE);
} else {
holder.LL2.setVisibility(View.VISIBLE);
holder.LL3.setVisibility(View.VISIBLE);
holder.CreditMemoID.setVisibility(View.VISIBLE);
holder.CreditMemoDate.setVisibility(View.VISIBLE);
holder.CreditMemoReason.setVisibility(View.VISIBLE);
holder.CreditMemoID.setText(invoiceLists.get(position).getCredit_Memo_ID());
holder.CreditMemoDate.setText(invoiceLists.get(position).getCredit_Memo_Date().substring(0,10));
holder.CreditMemoReason.setText(invoiceLists.get(position).getCredit_Memo_Reason());
}
} catch (Exception e) {
e.getMessage();
}
holder.SalesInvoiceNo.setText(invoiceLists.get(position).getSales_Invoice_ID());
holder.InvoiceDate.setText(invoiceLists.get(position).getInvoice_Date());
holder.DueDate.setText(invoiceLists.get(position).getDue_Date());
float invAmount = 0;
invAmount = Math.round(Float.parseFloat(invoiceLists.get(position).getInvoice_Amount())*100.00)/(float)100.00;
holder.InvoiceAmount.setText(String.format("%,.2f",invAmount));
holder.AmountDue.setText(String.format("%,.2f",invAmount));
//holder.InvoiceAmount.setText(invoiceLists.get(position).getInvoice_Amount());
holder.TotalAmount.setTag(position); // This line is important.
holder.SelectInvoiceCB.setTag(position); // This line is important.
holder.PayFull.setTag(position); // This line is important.
holder.PayPartial.setTag(position); // This line is important.
holder.TotalAmount.setText(invoiceLists.get(position).getAmount_Paid());
holder.SelectInvoiceCB.setChecked(invoiceLists.get(position).isSelectInvoice());
holder.PayFull.setChecked(invoiceLists.get(position).isPayFull());
holder.PayPartial.setChecked(invoiceLists.get(position).isPayPartial());
try {
if (invoiceLists.get(position).getAmount_Paid().toString().equals("") ||
invoiceLists.get(position).getAmount_Paid().toString().equals("0.0") ||
Float.parseFloat(invoiceLists.get(position).getAmount_Paid().toString()) < 1) {
invAmount = 0;
invAmountDue = 0;
invAmountPaid = 0;
//invAmount = Float.parseFloat(invoiceLists.get(position).getInvoice_Amount());
invAmount = Math.round(Float.parseFloat(invoiceLists.get(position).getInvoice_Amount())*100.00)/(float)100.00;
invAmountDue = invAmount - invAmountPaid;
Log.e("Without AmountPaid ", "Amount Due : " + String.valueOf(invAmountDue));
} else {
invAmount = 0;
invAmountDue = 0;
invAmountPaid = Math.round(Float.parseFloat(invoiceLists.get(position).getAmount_Paid())*100.00)/(float)100.00;
//invAmount = Float.parseFloat(invoiceLists.get(position).getInvoice_Amount());
invAmount = Math.round(Float.parseFloat(invoiceLists.get(position).getInvoice_Amount())*100.00)/(float)100.00;
invAmountDue = invAmount - invAmountPaid;
Log.e("With AmountPaid ", "Amount Due : " + String.valueOf(invAmountDue));
}
holder.AmountDue.setText(String.format("%,.2f",invAmountDue));
if (TotalPaymentAmount >= Float.parseFloat(String.valueOf(invAmountDue))) {
holder.SelectInvoiceCB.setChecked(true);
holder.PayFull.setChecked(true);
holder.PayFull.setClickable(true);
holder.PayPartial.setClickable(true);
holder.TotalAmount.setText(String.valueOf(Math.round(invAmountDue * 100.00) / 100.00));
System.out.println("TotalPaymentAmount: " + TotalPaymentAmount);
System.out.println("invAmountDue: " + invAmountDue);
if (Float.parseFloat(String.valueOf(invAmountDue)) < 1) {
Log.e("Computations : ", TotalPaymentAmount + " + " + String.valueOf(Float.parseFloat(String.valueOf(invAmountDue))));
Log.e("Equals ", "TotalPaymentAmount = " + TotalPaymentAmount);
} else {
TotalPaymentAmount = TotalPaymentAmount - Float.parseFloat(String.valueOf(invAmountDue));
}
} else {
if (TotalPaymentAmount < 1) {
holder.TotalAmount.setText("0.00");
/*holder.PayFull.setClickable(false);
holder.PayPartial.setClickable(false);*/
} else {
holder.SelectInvoiceCB.setChecked(true);
holder.PayPartial.setChecked(true);
holder.PayFull.setClickable(true);
holder.PayPartial.setClickable(true);
holder.TotalAmount.setText(String.valueOf(Math.round(TotalPaymentAmount * 100.00) / 100.00));
if ((TotalPaymentAmount - Float.parseFloat(String.valueOf(invAmountDue))) < 0) {
TotalPaymentAmount = (float) 0.0;
} else {
TotalPaymentAmount = TotalPaymentAmount - Float.parseFloat(String.valueOf(invAmountDue));
}
}
}
} catch (Exception e) {
e.getMessage();
System.out.println("Custom Invoice List: " + e);
} finally {
dbHelper.close();
}
}
@Override
public int getItemCount() {
return invoiceLists.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder {
CheckBox SelectInvoiceCB, PayFull, PayPartial;
TextView SalesInvoiceNo, InvoiceDate, InvoiceAmount, AmountDue, DueDate, CreditMemoID, CreditMemoDate, CreditMemoReason;
LinearLayout LL2, LL3;
EditText TotalAmount;
ImageView CaptureForm;
public MyViewHolder(View view) {
super(view);
// get the reference of item view's
SelectInvoiceCB = (CheckBox) view.findViewById(R.id.selectInvoiceCB);
SalesInvoiceNo = (TextView) view.findViewById(R.id.SINo);
InvoiceDate = (TextView) view.findViewById(R.id.SIDate);
InvoiceAmount = (TextView) view.findViewById(R.id.SIAmount);
AmountDue = (TextView) view.findViewById(R.id.SIAmountDue);
DueDate = (TextView) view.findViewById(R.id.SIdueDate);
PayFull = (CheckBox) view.findViewById(R.id.SIFull);
PayPartial = (CheckBox) view.findViewById(R.id.SIPartial);
TotalAmount = (EditText) view.findViewById(R.id.SITotalAmount);
CreditMemoID = (TextView) view.findViewById(R.id.creditMemoID);
CreditMemoDate = (TextView) view.findViewById(R.id.creditMemoDate);
CreditMemoReason = (TextView) view.findViewById(R.id.creditMemoReason);
LL2 = (LinearLayout) view.findViewById(R.id.ll2);
LL3 = (LinearLayout) view.findViewById(R.id.ll3);
}
}
}
答案 0 :(得分：0)
问题：滚动
后，您的edittext值为0 解决方案：将此代码用于Edittext textwatcher方法afterTextchange()上的yourEditTextName.setSelection(yourEditTextName.getText().length());
代码：
let data = [{
"id": 1,
"amount": 24000000,
"users": {
"username": "user1"
}
}, {
"id": 2,
"amount": 10000000,
"users": {
"username": "user1"
}
}, {
"id": 3,
"amount": 20000000,
"users": {
"username": "user2"
}
}];
function sumFor(username) {
return data.reduce((sum, item) => {
if (item.users.username === username) {
sum += item.amount;
}
return sum;
}, 0);
}
console.log(sumFor('user1'));