在帮朋友做的一个小项目中，发现了这么的一个需求：要求列表中的某一项是可编辑输入的，说实话，做了差不多两年android开发，我还是第一次做列表中的item是可以输入编辑的，只能说我们的需求确实是变化莫测........不多说，继续记录一下实现过程
1、实现思路
在adapter中保存一个Hashmap，同时监听EditText控件的输入，然后保存相对应的值
2、核心代码
public class PurchaseAndStorageAdapter extends SimpleAdapter<PurorderBean> {
private Context mContext;
public HashMap<Integer, String> contents = new HashMap<>();
public PurchaseAndStorageAdapter(Context context, List<PurorderBean> datas) {
super(context, R.layout.adapter_purchase_and_storage_item, datas);
mContext = context;
}
@Override
protected void convert(BaseViewHolder viewHoder, PurorderBean item) {
Log.i("purchaseAndStorage", "convert: name = " + item.getName());
//列表的数据在这里绑定
viewHoder.getTextView(R.id.tv_name).setText(item.getName());
viewHoder.getTextView(R.id.tv_large).setText(item.getModel());
viewHoder.getTextView(R.id.tv_order_num).setText(item.getTaskCount()+"");
viewHoder.getTextView(R.id.tv_num).setText(item.getPurOrderCount()+"");
EditText etNum = (EditText)viewHoder.getTextView(R.id.tv_num);
etNum.addTextChangedListener(new MyTextChangedListener(viewHoder,contents));
}
public class MyTextChangedListener implements TextWatcher {
public BaseViewHolder holder;
public HashMap<Integer, String> contents;
public MyTextChangedListener(BaseViewHolder holder,HashMap<Integer, String> contents){
this.holder = holder;
this.contents = contents;
}
@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) {
if(holder != null && contents != null){
int adapterPosition = holder.getAdapterPosition();
LogUtil.d(TAG,"adapterPosition==================="+adapterPosition);
contents.put(adapterPosition,editable.toString());
}
}
}
}
3、获取列表中我们输入的值
HashMap<Integer, String> contents = adapter.contents;
4、完整的BaseViewHolder 、BaseAdapter封装如下
BaseViewHolder 文件
public class BaseViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private SparseArray<View> views;
private BaseAdapter.OnItemClickListener mOnItemClickListener ;
public BaseViewHolder(View itemView, BaseAdapter.OnItemClickListener onItemClickListener){
super(itemView);
itemView.setOnClickListener(this);
this.mOnItemClickListener =onItemClickListener;
this.views = new SparseArray<View>();
}
public TextView getTextView(int viewId) {
return retrieveView(viewId);
}
public CheckBox getCheckBox(int viewId) {
return retrieveView(viewId);
}
public Button getButton(int viewId) {
return retrieveView(viewId);
}
public ImageView getImageView(int viewId) {
return retrieveView(viewId);
}
public View getView(int viewId) {
return retrieveView(viewId);
}
protected <T extends View> T retrieveView(int viewId) {
View view = views.get(viewId);
if (view == null) {
view = itemView.findViewById(viewId);
views.put(viewId, view);
}
return (T) view;
}
@Override
public void onClick(View v) {+
if (mOnItemClickListener != null) {
mOnItemClickListener.onItemClick(v,getLayoutPosition());
}
}
}
BaseAdapter文件
public abstract class BaseAdapter<T,H extends BaseViewHolder> extends RecyclerView.Adapter<BaseViewHolder>{
protected static final String TAG = BaseAdapter.class.getSimpleName();
protected final Context context;
protected int layoutResId;
protected List<T> datas;
private OnItemClickListener mOnItemClickListener = null;
public interface OnItemClickListener {
void onItemClick(View view, int position);
}
public BaseAdapter(Context context, int layoutResId) {
this(context, layoutResId, null);
}
public BaseAdapter(Context context, int layoutResId, List<T> datas) {
this.datas = datas == null ? new ArrayList<T>() : datas;
this.context = context;
this.layoutResId = layoutResId;
}
@Override
public BaseViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(layoutResId, viewGroup, false);
BaseViewHolder vh = new BaseViewHolder(view,mOnItemClickListener);
return vh;
}
@Override
public void onBindViewHolder(BaseViewHolder viewHoder, int position) {
T item = getItem(position);
convert((H)viewHoder, item);
}
@Override
public int getItemCount() {
if(datas==null || datas.size()<=0)
return 0;
return datas.size();
}
public T getItem(int position) {
if (position >= datas.size()) return null;
return datas.get(position);
}
public void clear(){
// int itemCount = datas.size();
// datas.clear();
// this.notifyItemRangeRemoved(0,itemCount);
if(datas==null || datas.size()<=0)
return;
for (Iterator it=datas.iterator();it.hasNext();){
T t = (T) it.next();
int position = datas.indexOf(t);
it.remove();
notifyItemRemoved(position);
}
}
/**
* 从列表中删除某项
* @param t
*/
public void removeItem(T t){
int position = datas.indexOf(t);
datas.remove(position);
notifyItemRemoved(position);
}
public int getSizes(){
return datas.size();
}
public List<T> getDatas(){
return datas;
}
public void addData(List<T> datas){
addData(0,datas);
}
public void addData(int position,List<T> list){
if(list !=null && list.size()>0) {
for (T t:list) {
datas.add(position, t);
notifyItemInserted(position);
}
}
}
public void refreshData(List<T> list){
LogUtil.i(TAG,"list.size()======="+list.size());
clear();
if(list !=null && list.size()>0){
int size = list.size();
for (int i=0;i<size;i++){
datas.add(i,list.get(i));
notifyItemInserted(i);
}
}
}
public void loadMoreData(List<T> list){
if(list !=null && list.size()>0){
int size = list.size();
int begin = datas.size();
for (int i=0;i<size;i++){
datas.add(list.get(i));
notifyItemInserted(i+begin);
}
}
}
/**
* Implement this method and use the helper to adapt the view to the given item.
* @param viewHoder A fully initialized helper.
* @param item The item that needs to be displayed.
*/
protected abstract void convert(H viewHoder, T item);
public void setOnItemClickListener(OnItemClickListener listener) {
this.mOnItemClickListener = listener;
}
}
SimpleAdapter文件
public abstract class SimpleAdapter<T> extends BaseAdapter<T,BaseViewHolder> {
public SimpleAdapter(Context context, int layoutResId) {
super(context, layoutResId);
}
public SimpleAdapter(Context context, int layoutResId, List<T> datas) {
super(context, layoutResId, datas);
}
}
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