效果图

遇到的问题

TextWatcher 的afterTextChanged  方法会被执行多次，尤其切换tab之后 ，adapter 数据重新设置 ，但是仍然会执行多次，最开始不得不用线程池去监听  next button  状态；

解决方法

@Override

    public void onBindViewHolder(RecyclerView.ViewHolder holder,final int position) {

if (holder ==null)return;

//        final int pos = holder.getAdapterPosition();

        final LoginconfigFieldRsp data =datas.get(position);

if (holderinstanceof AccountViewHolder) {

final AccountViewHolder accountViewHolder = (AccountViewHolder) holder;

//避免TextWatcher被调用，提前将他移除。

            if (accountViewHolder.accountinput.getTag()instanceof ExpandTextWatcher) {

accountViewHolder.accountinput.removeTextChangedListener((ExpandTextWatcher) (accountViewHolder.accountinput.getTag()));

}

accountViewHolder.accoundlab.setText(data.getLabel());

accountViewHolder.accountinput.setText(data.getInputvalue());

accountViewHolder.accountinput.setHint(String.format(tips, data.getLabel()));

accountViewHolder.accountinput.setOnFocusChangeListener(new ExpandOnFocusChangeListener(position, accountViewHolder.ivaccountclear, data));

if (data.isShowClear()) {

accountViewHolder.ivaccountclear.setVisibility(View.VISIBLE);

}else {

accountViewHolder.ivaccountclear.setVisibility(View.INVISIBLE);

}

accountViewHolder.ivaccountclear.setOnClickListener(new View.OnClickListener() {

@Override

                public void onClick(View v) {

data.setInputvalue("");

accountViewHolder.accountinput.setText("");

accountViewHolder.accountinput.setHint(String.format(tips,data.getLabel()));

notifyItemChanged(position);

}

});

            ExpandTextWatcher expandTextWatcher =new ExpandTextWatcher(position, accountViewHolder.ivaccountclear, data);

accountViewHolder.accountinput.addTextChangedListener(expandTextWatcher);

accountViewHolder.accountinput.setTag(expandTextWatcher);

}

}