【发布时间】：2012-06-27 21:04:53
【问题描述】：
我正在尝试使用 EditText 控件实现 listView。问题是当我编辑其中一个字段时，视图中也修改了其他一些字段。但是，我的 Java 对象只反映了我所做的更改（而不是设置的其他 EditText）
我的安卓活动
public class LoanRepaymentActivity extends ListActivity implements View.OnClickListener {
private Location lastKnownLocation;
private ArrayList<CurrentRepaymentInstallment> loansForRepayment;
@Override
public void onCreate(Bundle savedInstanceState){
lastKnownLocation = Utility.getLastKnownLocation(this);
super.onCreate(savedInstanceState);
Intent intent = getIntent();
RepaymentInfo repaymentInfo = (RepaymentInfo)intent.getSerializableExtra(Constants.CURRENT_REPAYMENT_INSTALLMENT);
loansForRepayment = repaymentInfo.getLoansForRepayment();
boolean repaymentsNotPresent = loansForRepayment == null || loansForRepayment.isEmpty();
if(repaymentsNotPresent){
Dialog dialog = Utility.getDialogWithText(LoanRepaymentActivity.this, getText(R.string.noLoansForRepayment).toString());
Utility.getDialogButton(dialog, LoanRepaymentActivity.this, PartnerGroupListActivity.class, intent.getStringExtra(Constants.ACECSS_TOKEN_PARAM));
dialog.show();
}
ArrayAdapter<CurrentRepaymentInstallment> adapter = new LoanRepaymentListAdapter(this, loansForRepayment);
View footer = getLayoutInflater().inflate(R.layout.loan_disbursement_footer, null);
getListView().addFooterView(footer);
setListAdapter(adapter);
/* if(!repaymentsNotPresent) {
TextView textView = (TextView)findViewById(R.id.screenTitle);
String currentInstallmentLabel = getText(R.string.currentInstallmentLabel).toString() + repaymentInfo.getCurrentGroupInstallment();
textView.setText(currentInstallmentLabel);
}*/
Button button = (Button)findViewById(R.id.disburse);
button.setOnClickListener(this);
}
我的 XML 布局
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<TextView android:id="@+id/screenTitle"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
</TextView>
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@+layout/loan_disbursement_footer"
/>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/borrowerName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@+id/label"
android:textSize="14sp"
>
</TextView>
<TextView
android:id="@+id/loanAmount"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@+id/label"
android:textSize="14sp"
>
</TextView>
<TextView
android:id="@+id/installmentNumber"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@+id/label"
android:textSize="12sp"
>
</TextView>
<TextView
android:id="@+id/estimatedTotal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@+id/label"
android:textSize="12sp"
>
</TextView>
</LinearLayout>
<EditText
android:id="@+id/repaymentAmount"
android:layout_width="100sp"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:inputType="numberDecimal"
android:textSize="12sp"
>
</EditText>
</RelativeLayout>
用于设置 ListView 的自定义数组适配器
public class LoanRepaymentListAdapter extends ArrayAdapter<CurrentRepaymentInstallment> {
private final List<CurrentRepaymentInstallment> loansForRepayment;
private final Activity context;
public LoanRepaymentListAdapter(Activity context, List<CurrentRepaymentInstallment> loansForRepayment) {
super(context, R.layout.loan_repayments, loansForRepayment);
this.context = context;
this.loansForRepayment = loansForRepayment;
}
static class ViewHolder {
protected TextView borrowerName;
protected TextView loanAmount;
protected TextView installmentNumber;
protected TextView estimatedTotal;
protected EditText repaymentAmount;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
View view = null;
if (convertView == null) {
LayoutInflater inflator = context.getLayoutInflater();
view = inflator.inflate(R.layout.loan_repayments, null);
final ViewHolder viewHolder = new ViewHolder();
viewHolder.borrowerName = (TextView) view.findViewById(R.id.borrowerName);
viewHolder.loanAmount = (TextView) view.findViewById(R.id.loanAmount);
viewHolder.installmentNumber = (TextView) view.findViewById(R.id.installmentNumber);
viewHolder.estimatedTotal = (TextView) view.findViewById(R.id.estimatedTotal);
viewHolder.repaymentAmount = (EditText) view.findViewById(R.id.repaymentAmount);
// viewHolder.repaymentAmount.setEditableFactory(Editable.Factory.getInstance());
viewHolder.repaymentAmount.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable arg0) {
}
@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) {
CurrentRepaymentInstallment loanRepayment = (CurrentRepaymentInstallment) viewHolder.repaymentAmount.getTag();
String repaymentAmount = s.toString();
loanRepayment.setRepaymentAmount(repaymentAmount);
}
});
view.setTag(viewHolder);
viewHolder.repaymentAmount.setTag(loansForRepayment.get(position));
} else {
view = convertView;
((ViewHolder) view.getTag()).repaymentAmount.setTag(loansForRepayment.get(position));
}
ViewHolder holder = (ViewHolder) view.getTag();
holder.borrowerName.setText(loansForRepayment.get(position).getLoanProfileBasicInfo().getBorrowerBasicInfo().getFirstName());
holder.loanAmount.setText("Rs. " + Float.toString(loansForRepayment.get(position).getLoanProfileBasicInfo().getLoanAmountInPaisa()/100));
holder.estimatedTotal.setText("Rs. " + Float.toString(loansForRepayment.get(position).getEstimatedTotalAmount()/100));
holder.installmentNumber.setText("Inst no : " + Integer.toString(loansForRepayment.get(position).getInstallmentNumber()));
float repaymentAmt = loansForRepayment.get(position).getRepaymentAmount();
if(repaymentAmt != 0.0) holder.repaymentAmount.setText(Float.toString(repaymentAmt));
return view;
}
}
【问题讨论】：
-
将
addTextChangeListener-line 放在 if 语句之后。您还可以像new TextWatcher(position)一样为 TextWatcher 提供位置并使用该位置。 -
@MartijnVanMierloo 我应该把它放在 else 块内还是放在 else 块外？
-
在 if 和 else 块之外 :)
-
@MartijnVanMierloo - 我把代码留在了同一个地方。我得到了持有人的标签并设置了对象值。所以现在java对象设置正确。唯一剩下的就是显示的多个 EditTexts
标签： android android-listview android-arrayadapter android-edittext