我有一个Recyclerview，它从Firebase提取数据，当我单击fab按钮时，Recyclerview里面有编辑文本，其中一个for循环遍历Recyclerview内的编辑文本并将数据保存在Firebase中 我的问题是单击按钮时，recyclerview的一半已镜像
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
final String userid = user.getUid();
usersDatabase = FirebaseDatabase.getInstance().getReference().child("users").child(userid);
recyclerView = view.findViewById(R.id.jardiList);
AItem = new ArrayList<>();
aAdapter = new jardiListAdapter(getContext(), AItem, this);
aAdapter.setHasStableIds(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
recyclerView.setAdapter(aAdapter);
fab = view.findViewById(R.id.fab_jardi);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
for (int i = 0; i < AItem.size(); i++) {
Adapterp mylist = AItem.get(i);
View view1 = recyclerView.getChildAt(i);
if (view1 != null) {
final TextView Qty = view1.findViewById(R.id.jSoldQty);
Map<String, Object> note6 = new HashMap<>();
note6.put(KEY_ITEMNAME, mylist.getItemName());
note6.put(KEY_ITEMOLD, mylist.getPurchasedQty());
int a = Integer.valueOf(mylist.getPurchasedQty())-Integer.valueOf(mylist.getItemStill()) ;
Qty.setText(String.valueOf(a));
mylist.setItemStill(String.valueOf(a));
// note6.put(KEY_ITEMPRICE, mylist.getItemPrice());
if (mylist.getItemStill() == null) {
note6.put(KEY_ITEMSTILL, "0");
note6.put(KEY_ITEMSOLD, "0");
note6.put(KEY_SALESTOTAL, "0");
} else {
note6.put(KEY_ITEMSTILL, mylist.getItemStill());
note6.put(KEY_ITEMSOLD, mylist.getItemSold());
note6.put(KEY_SALESTOTAL, mylist.getSalesTotal());
// currentTotal = currentTotal + Integer.valueOf(mylist.getSalesTotal());
}
note6.put(KEY_DATE, getDate());
// note.put(KEY_TIME, mylist.getPurchasedQty());
// note.put(KEY_P, mylist.getPurchasedQty());
usersDatabase.child("jardi").child(getDate()).child(p).child("Cigarette").child(mylist.getItemID()).updateChildren(note6);
usersDatabase.child("jardi1").child(p).child("Cigarette").child(mylist.getItemID()).updateChildren(note6);
}
}
}
});
编辑：我忘了说我只在横向模式下以人像模式面对问题，其正常工作而不会翻转
编辑：
usersDatabase.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
if (p.equals("1")) {
itemsDatabase = FirebaseDatabase.getInstance().getReference().child("users").child(userid)
.child("inventory").child("p").child(p).child("Cigarette");
itemsDatabase.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
AItem.clear();
for (DataSnapshot teacherSnapshot : dataSnapshot.getChildren()) {
Adapterp adapterp = teacherSnapshot.getValue(Adapterp.class);
adapterp.setKey(teacherSnapshot.getKey());
AItem.add(adapterp);
}
aAdapter.notifyDataSetChanged();
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
编辑：这是jardiListAdapter.class
public class jardiListAdapter extends RecyclerView.Adapter<jardiListAdapter.RecyclerViewHolder> {
private Context mContext;
private List<Adapterp> item;
private OnItemClickListener mListener;
public jardiListAdapter(Context context, List<Adapterp> uploads, OnItemClickListener mListener1) {
mContext = context;
item = uploads;
mListener = mListener1;
}
@Override
public jardiListAdapter.RecyclerViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(mContext).inflate(R.layout.jardi_adapter, parent, false);
return new jardiListAdapter.RecyclerViewHolder(v);
}
@Override
public void onBindViewHolder(final jardiListAdapter.RecyclerViewHolder holder, int position) {
final Adapterp currentitem = item.get(position);
holder.itemName.setText(currentitem.getItemName());
holder.old.setText(currentitem.getPurchasedQty());
holder.still.setText(currentitem.getItemStill());
if(!holder.still.getText().toString().equals("")){
int sum = Integer.valueOf(currentitem.getPurchasedQty())-Integer.valueOf(currentitem.getItemStill());
holder.sold.setText(String.valueOf(sum));
}
if(currentitem.getSalesTotal()!=null){
NumberFormat formatter = new DecimalFormat("#,###");
double price = Double.valueOf(currentitem.getSalesTotal());
String formattedNumber = formatter.format(price);
holder.salestotal.setText(formattedNumber);
}else {
holder.salestotal.setText("0");
}
}
@Override
public int getItemCount() {
return item.size();
}
public void setOnItemClickListener(OnItemClickListener listener) {
this.mListener = listener;
}
public interface OnItemClickListener {
void onItemClick(int position, String newValue);
void onShowItemClick(int position);
void onDeleteItemClick(int position);
}
public class RecyclerViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener
, MenuItem.OnMenuItemClickListener, PopupMenu.OnMenuItemClickListener {
public TextView itemName, old, sold, salestotal;
public EditText still;
public String cc;
ImageButton optionBtn;
public RecyclerViewHolder(View itemView) {
super(itemView);
itemName = itemView.findViewById(R.id.jitemname);
old = itemView.findViewById(R.id.jOldQty);
sold = itemView.findViewById(R.id.jSoldQty);
salestotal = itemView.findViewById(R.id.jSalesTotal);
still = itemView.findViewById(R.id.jStillQty);
optionBtn = itemView.findViewById(R.id.jardi_option);
optionBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showPopup(v);
}
});
still.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) {
}
@Override
public void afterTextChanged(Editable editable) {
mListener.onItemClick(getAdapterPosition(), still.getText().toString());
}
});
itemView.setOnClickListener(this);
}
@Override
public void onClick(View view) {
}
@Override
public boolean onMenuItemClick(MenuItem item) {
if (mListener != null) {
int position = getAdapterPosition();
if (position != RecyclerView.NO_POSITION) {
switch (item.getItemId()) {
case R.id.smallJardi_btn:
mListener.onShowItemClick(position);
break;
case R.id.jardi_missingPurchases_btn:
mListener.onShowItemClick(position);
break;
}
}
}
return false;
}
public void showPopup(View view) {
PopupMenu popup = new PopupMenu(mContext, view);
try {
// Reflection apis to enforce show icon
Field[] fields = popup.getClass().getDeclaredFields();
for (Field field : fields) {
String POPUP_CONSTANT = "mPopup";
if (field.getName().equals(POPUP_CONSTANT)) {
field.setAccessible(true);
Object menuPopupHelper = field.get(popup);
Class<?> classPopupHelper = Class.forName(menuPopupHelper.getClass().getName());
String POPUP_FORCE_SHOW_ICON = "setForceShowIcon";
Method setForceIcons = classPopupHelper.getMethod(POPUP_FORCE_SHOW_ICON, boolean.class);
setForceIcons.invoke(menuPopupHelper, true);
break;
}
}
} catch (Exception e) {
e.printStackTrace();
}
popup.getMenuInflater().inflate(R.menu.jardi_menu, popup.getMenu());
popup.setOnMenuItemClickListener(this);
popup.show();
}
}
}
这是我的布局
jardi_adapter.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:orientation="vertical"
android:visibility="visible"
app:cardBackgroundColor="#FFFFE8">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="1.7">
<TextView
android:id="@+id/jitemname"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.4"
android:padding="8dp"
android:textColor="#fa0" />
<TextView
android:id="@+id/jOldQty"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:padding="8dp" />
<EditText
android:id="@+id/jStillQty"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.3"
android:inputType="number"
android:padding="8dp" />
<TextView
android:id="@+id/jSoldQty"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:padding="8dp"
android:text="0" />
<TextView
android:id="@+id/jSalesTotal"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:padding="8dp"
android:text="0" />
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:padding="8dp"
android:text="LBP" />
<ImageButton
android:id="@+id/jardi_option"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.2"
android:background="#00000000"
android:src="@drawable/arrow_24dp" />
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/black" />
</LinearLayout>
答案 0 :(得分：1)
在回收商列表中使用编辑文本时出现问题。当您向下滚动时，即使您的用户尚未填写，回收者视图中的底部编辑文本也会被已填充的编辑文本值填充。
作为替代方法，您可以创建最适合您的任何数据结构稀疏数组，这些结构可以映射您的位置和值，例如mEditTextItem [] = new String [LIST_SIZE]。 ，假设您的列表项的位置与数组的索引匹配。
尝试使用文本监视程序mEditTextItem [POSITION] = YOUR_EDIT_TEXT_VALUE的值更新索引
要初始化编辑文本时，请使用mEditTextItem [POSITION]
的值。通过此方法，您始终可以确保您的编辑文本具有正确的值。
在fab项目上单击，而不是遍历“回收者”视图，而是遍历mEditTextItem获得结果