我想利用 expandlelistView 來顯示產品和子產品，即子持有者，在子持有者中，它包含一個 textView 和一個 Edittext，它保存每個子產品的產品計數值，這里的問題是這個。當我在編輯文本中輸入值時，在折疊組時，編輯文本中的數據會丟失。這些值將在其他組編輯文本中重復。3.如何保存數據以供以后在應用程序中使用。下面的代碼?；顒硬季?。<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".ui.activities.ShelfCheckActivity"><ExpandableListView android:id="@+id/listview" android:layout_width="wrap_content" android:layout_height="match_parent" android:dividerHeight="0dp" android:groupIndicator="@null" android:descendantFocusability="beforeDescendants"/></RelativeLayout>模型類public class ListItemModel {String title;ArrayList<EdittextValues> arrayList = new ArrayList<>();public ListItemModel(String title) { this.title = title;}public String getTitle() { return title;}public void setTitle(String title) { this.title = title;}public ArrayList<EdittextValues> getArrayList() { return arrayList;}public void setArrayList(ArrayList<EdittextValues> arrayList) { this.arrayList = arrayList;}}波霍類public class EdittextValues {String value;public EdittextValues(String value) { this.value = value;}public String getValue() { return value;}public void setValue(String value) { this.value = value;}}
1 回答
鴻蒙傳說
TA貢獻1865條經驗 獲得超7個贊
只需更改以下方法并檢查其工作與否！
@Override
public View getChildView(int groupPosition, int childPosition, boolean
isLastChild, View convertView, ViewGroup parent) {
if(convertView == null)
{
convertView = LayoutInflater.from(context).inflate(R.layout.list_row_child,null);
childViewHolder = new ChildViewHolder(convertView, groupPosition, childPosition);
convertView.setTag(childViewHolder);
}
else{
childViewHolder = (ChildViewHolder) convertView.getTag();
}
childViewHolder.childTitle.setText(groupItem.get(groupPosition)
.getChildTitles().get(childPosition));
return convertView;
}
另一個變化是
private class ChildViewHolder {
public TextView childTitle;
public EditText et;
public ChildViewHolder(View itemView, int groupPosition, int childPosition) {
super(itemView);
childTitle = itemView.findViewById(R.id.textViewChild);
et = itemView.findViewById(R.id.productCount);
et.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
if(charSequence != null){
groupItem.get(groupPosition).getArrayList().get(childPosition).setValue(charSequence.toString());
}
}
@Override
public void afterTextChanged(Editable editable) {
}
});
}
}
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