From the conclusion of previous post我无法跟踪如何将TextWatcher多次添加到ExpandableListView中的EditText。 ArrayList只有2个元素。
输出应仅列出0和1一次，但它被调用两次。
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private LayoutInflater inflater;
private Context context;
private ExpandableListView accordion;
private int lastExpandedGroupPosition;
ArrayList<ModelObject> mParent;
TextView textViewLabelGrandTotal;
float grandTotal = 0;
public ExpandableListAdapter( Context context, ArrayList<ModelObject> ModelObject, ExpandableListView accordion, TextView textViewLabelGrandTotal)
{
mParent = ModelObject;
inflater = LayoutInflater.from(context);
this.accordion = accordion;
this.context=context;
this.textViewLabelGrandTotal=textViewLabelGrandTotal;
}
@Override
//counts the number of group/parent items so the list knows how many times calls getGroupView() method
public int getGroupCount() {
return mParent.size();
}
@Override
//counts the number of children items so the list knows how many times calls getChildView() method
public int getChildrenCount(int i) {
return mParent.get(i).childCount;
}
@Override
//gets the title of each parent/group
public Object getGroup(int i) {
return mParent.get(i).INVOICE_ID;
}
@Override
//gets the name of each item
public Object getChild(int i, int i1) {
return mParent.get(i).children.get(i1);
}
@Override
public long getGroupId(int i) {
return i;
}
@Override
public long getChildId(int i, int i1) {
return i1;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
//in this method you must set the text to see the parent/group on the list
public View getGroupView(final int i, boolean b, View view, ViewGroup viewGroup) {
if (view == null) {
view = inflater.inflate(R.layout.sfa_receipt_by_customer_new_receipt_due_invoice_list_item_parent, viewGroup,false);
}
// set category name as tag so view can be found view later
view.setTag(getGroup(i).toString());
CheckBox CheckBoxInv =(CheckBox)view.findViewById(R.id.CheckBoxInv);
TextView textViewLabelInvoice = (TextView) view.findViewById(R.id.textViewLabelInvoice);
TextView textViewLabelDate = (TextView) view.findViewById(R.id.textViewLabelDate);
TextView textViewDueAmt = (TextView) view.findViewById(R.id.textViewDueAmt);
TextView textViewRemainingAmt = (TextView) view.findViewById(R.id.textViewRemainingAmt);
final EditText editTextPaid = (EditText)view.findViewById(R.id.editTextPaid);
DecimalFormat df = new DecimalFormat("#.##");
textViewLabelInvoice.setText(mParent.get(i).INVOICE_NO);
textViewLabelDate.setText(mParent.get(i).INVOICE_DATE);
textViewDueAmt.setText(df.format(mParent.get(i).DUE));
textViewRemainingAmt.setText(df.format(mParent.get(i).REMAINING_AFTER_PAID));
CheckBoxInv.setChecked(mParent.get(i).checked);
CheckBoxInv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
CheckBox c = (CheckBox) v;
System.out.println("===================== check change listerner ============================");
editTextPaid.setText(df.format(mParent.get(i).DUE)); // editTextPaid.setText("");
System.out.println("===================== check change listerner ============================");
if(c.isChecked() == false)
{
System.out.println("===================== uncheck change listerner ============================");
editTextPaid.setText("");
System.out.println("===================== uncheck change listerner ============================");
}
// notifyDataSetChanged();
}
});
//enable focus of edit text box
editTextPaid.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
System.out.println("ON TOUCH LISTERNER");
return false;
}
});
//disable focus of edittext box
editTextPaid.setOnFocusChangeListener(new View.OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
System.out.println("ON FOCUS CHANGE LISTENER");
}
});
//re calculate the remaining balance amount
editTextPaid.addTextChangedListener(new TextWatcher() {
{
System.out.println("TextWatcher Initialized..................!! " + i + " " + this);
}
@Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
System.out.println("ON TEXT CHANGE");
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
System.out.println("BEFORE TEXT CHANGE");
}
@Override
public void afterTextChanged(Editable arg0) {
System.out.println("AFTER TEXT CHANGE");
}
});
//return the entire view
return view;
}
@Override
//in this method you must set the text to see the children on the list
public View getChildView(int i, int i1, boolean b, View view, ViewGroup viewGroup) {
if (view == null)
{
view = inflater.inflate(R.layout.sfa_receipt_by_customer_new_receipt_due_invoice_list_item_child, viewGroup,false);
}
System.out.println("Inside getChildView()..................!!");
TextView textViewLabelReceipt = (TextView) view.findViewById(R.id.textViewLabelReceipt);
textViewLabelReceipt.setText((i1+1)+"."+mParent.get(i).children.get(i1).RECEIPT_NO);
TextView textViewLabelDate = (TextView) view.findViewById(R.id.textViewLabelDate);
textViewLabelDate.setText((i1+1)+"."+mParent.get(i).children.get(i1).RECEIPT_DATE);
TextView textViewRemainingAmt = (TextView) view.findViewById(R.id.textViewRemainingAmt);
textViewRemainingAmt.setText((i1+1)+"."+mParent.get(i).children.get(i1).REMAINING_AFTER_ADJUSTED_AMOUNT);
TextView textViewDueAmt = (TextView) view.findViewById(R.id.textViewDueAmt);
textViewDueAmt.setText((i1+1)+"."+mParent.get(i).children.get(i1).ADVANCE_BALANCE);
EditText editTextPaid =(EditText)view.findViewById(R.id.editTextPaid);
return view;
}
@Override
public boolean isChildSelectable(int i, int i1) {
return true;
}
@Override
/**
* automatically collapse last expanded group
*/
public void onGroupExpanded(int groupPosition) {
if(groupPosition != lastExpandedGroupPosition){
accordion.collapseGroup(lastExpandedGroupPosition);
}
super.onGroupExpanded(groupPosition);
lastExpandedGroupPosition = groupPosition;
}
}
07-30 06:59:28.219: I/System.out(9082): TextWatcher Initialized..................!! 0 com.example.ExpandableListAdapter$4@52bf1224
07-30 06:59:28.223: I/System.out(9082): TextWatcher Initialized..................!! 1 com.example.ExpandableListAdapter$4@52c09858
07-30 06:59:28.227: I/System.out(9082): TextWatcher Initialized..................!! 0 com.example.ExpandableListAdapter$4@52c37d10
07-30 06:59:28.239: I/System.out(9082): TextWatcher Initialized..................!! 1 com.example.ExpandableListAdapter$4@52c723ec
答案 0 :(得分：0)
自己解决了。
为ViewHolder类中的getGroupView（）方法放置了所有视图[CHECKBOX，EDITTEXT，TEXTVIEW] [这只是一个包含视图的类]。
使用＆＃34;视图＆＃34;的settag（）方法保存它对象，如果＆＃34;视图＆＃34;是getGroupView（）方法的参数。参数返回null。
使用getTag（）检索视图，如果＆＃34;查看＆＃34;则从中初始化ViewHolder对象。参数不为空。