我在每个项目上都有一个TextView,并在holder.item_edit_text.addTextChangedListener
上添加了onBindViewHolder
以获得较长列表,并且该接口在片段级别计算总数,但是当用户在一个视图上键入时,很奇怪,在多个项目上调用onBindViewHolder
。
IE,如果用户输入5,我将获得5的倍数,具体取决于回收率(列表中的项目数),例如15或25
RECYCLERVIEW onBindViewHolder
holder.item_edit_text.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence amount, int start, int before, int count) {
calculateTotal.onAmountAdded(current, amount.toString());
}
@Override
public void afterTextChanged(Editable s) {
}
});
@Override
public int getItemCount() {
if (Accounts != null) {
return Accounts.size();
}
return 0;
}
问题是我如何确保每次在recyclerview中为一项调用
onBindViewHolder
片段
@Override
public void onAmountAdded(Account account, String amount) {
private Map<Account, String> orderItems = new HashMap<>();
if (amount.length() < 9) {
orderItems.put(account, amount);
int newTotal = 0;
Iterator iterator = orderItems.entrySet().iterator();
while (iterator.hasNext()) {
try {
Map.Entry mentry = (Map.Entry) iterator.next();
newTotal += Integer.parseInt(mentry.getValue().toString());
} catch (Exception e) {
e.printStackTrace();
}
}
text_total.setText(ValidationUtil.formatNumber(String.valueOf(newTotal)));
return;
}
}
最佳答案
我想没有足够的信息。
而不是在viewBinder上添加TextWatcher
将其添加到您的ViewHolder类中
class ViewHolder extends RecyclerView.ViewHolder {
private TextView item_edit_text;
ViewHolder(View itemView) {
super(itemView);
item_edit_text = itemView.findViewById(R.id.item_edit_text);
item_edit_text.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence amount, int start, int before, int count) {
//not sure why this current variable is for
//if its current Account
Accounts current = Accounts.get(getLayoutPosition());
calculateTotal.onAmountAdded(current, amount.toString());
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
}
关于java - Android RecyclerView和onBindViewHolder,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/52897859/