recycleView实现item点击更改该item颜色，其它item颜色变回 - 好文

recycleView实现item点击更改该item颜色，其它item颜色变回
<http://www.cnblogs.com/kim-liu/p/7681862.html>

项目中需要横向滚动效果，按照以前的思路，我会写一个ScrollView，里边加一个LinearLayout，在代码中动态加入控件，然后动态删除或者改变颜色，现在android有了新控件RecyclerView，可以方便的实现这样的功能，具体使用方法请参考这篇文章:
Android 自定义RecyclerView 实现真正的Gallery效果
<http://blog.csdn.net/lmj623565791/article/details/38173061/>

主要问题在于，我点击一个item，改变颜色，点击其他项，改变颜色，上一次点击的变回原来的颜色，刚开始实现的方法是在控件上直接修改，发现滑动的时候，颜色会乱掉，所以在adapter里边加入一个list进行标记，根据标记改变控件颜色
相应的adapter
public class AddDeviceAdapter extends RecyclerView.Adapter<AddDeviceAdapter.
ViewHolder> /*implements View.OnClickListener*/{ private OnItemClickListener
mOnItemClickListener =null; private LayoutInflater mInflater; private
List<AddDevice> mDatas;private AddDevice addDevice; private List<Boolean>
isClicks;//控件是否被点击,默认为false，如果被点击，改变值，控件根据值改变自身颜色 public
AddDeviceAdapter(Context context, List<AddDevice> datas) { mInflater =
LayoutInflater.from(context); mDatas = datas; isClicks =new ArrayList<>(); for(
int i =0;i<mDatas.size();i++){ isClicks.add(false); } } public void
setDatas(List<AddDevice> datas) { mDatas = datas; L.e("AddDeviceAdapter's
mDatas===" +new Gson().toJson(mDatas)); } public void
setOnItemClickLitener(OnItemClickListener mOnItemClickListener) {
this.mOnItemClickListener = mOnItemClickListener; } @Overridepublic int
getItemCount() {return mDatas.size(); } @Override public ViewHolder
onCreateViewHolder(ViewGroup viewGroup,int i) { View view =
mInflater.inflate(R.layout.item_add_device, viewGroup,false); ViewHolder
viewHolder =new ViewHolder(view); viewHolder.viewSpace =
view.findViewById(R.id.viewSpace); viewHolder.ivAddDevice = (ImageView)
view.findViewById(R.id.ivAddDevice); viewHolder.tvAddDevice = (TextView)
view.findViewById(R.id.tvAddDevice);//将创建的View注册点击事件 //
view.setOnClickListener(this);return viewHolder; } @Override public void
onBindViewHolder(final ViewHolder viewHolder, final int i) { addDevice =
mDatas.get(i); viewHolder.ivAddDevice.setImageResource(addDevice.getResId());
viewHolder.tvAddDevice.setText(addDevice.getItemText());
//将数据保存在itemView的Tag中，以便点击时进行获取
viewHolder.itemView.setTag(viewHolder.tvAddDevice);if(isClicks.get(i)){
viewHolder.tvAddDevice.setTextColor(Color.parseColor("#00a0e9")); }else{
viewHolder.tvAddDevice.setTextColor(Color.parseColor("#ffffff")); } //
if(addDevice.isFirst()) {// viewHolder.viewSpace.setVisibility(View.GONE); // }
// 如果设置了回调，则设置点击事件if (mOnItemClickListener != null) {
viewHolder.itemView.setOnClickListener(new View.OnClickListener() { @Override
publicvoid onClick(View v) { for(int i = 0; i <isClicks.size();i++){
isClicks.set(i,false); } isClicks.set(i,true); notifyDataSetChanged();
mOnItemClickListener.onItemClick(viewHolder.itemView,viewHolder.tvAddDevice,
i); } }); } }/* @Override public void onClick(View v) { if
(mOnItemClickListener != null) { //注意这里使用getTag方法获取数据
mOnItemClickListener.onItemClick(, textView,(int)v.getTag()); } }*/public static
classViewHolder extends RecyclerView.ViewHolder { public ViewHolder(View arg0) {
super(arg0); } View viewSpace; ImageView ivAddDevice; TextView tvAddDevice; }
publicinterface OnItemClickListener { void onItemClick(View view, TextView
textView,int position); } }

热门工具换一换