RecyclerView多种item布局

先看效果图

右边的布局使用的是RecyclerView：基本的用法也就不多说了，都已经比较熟悉了。



通过上面的效果图 我们已经实现了最基本的RecyclerView多种item布局，下面我就仔细说下到底是怎么实现的吧：

实现多种样式核心方法如下：

@Override
public int getItemViewType(int position) {
if (position < 1) {
return 0;
} else if (3 <= position && position < 7) {
return 1;
} else return 2;
}

接收的position表示当前第几的item需要处理，通过然后返回想要处理成那种试图的样子，（我这里0表示一行只有一个布局，1表示一行有4个布局，2表示一行有两个布局）；然后通过处理函数接收处理，代码如下：

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

int itemtype=getItemViewType(position);
switch (itemtype){
case 0:
ViewHplder_match vh1= (ViewHplder_match) holder;
vh1.goods_img_one.setImageDrawable(list.get(position).getGoodsimage());
break;
case 1:
ViewHplder_two vh2= (ViewHplder_two) holder;
vh2.goods_img_two.setImageDrawable(list.get(position).getGoodsimage());
vh2.goods_nm_two.set
c071
Text(list.get(position).getGoodsname());
break;
case 2:
ViewHplder_four vh3= (ViewHplder_four) holder;
vh3.goods_image.setImageDrawable(list.get(position).getGoodsimage());
vh3.goods_name.setText(list.get(position).getGoodsname());
vh3.goods_value.setText(list.get(position).getGoodsvalue());
break;
}

}

ViewHplder_match是继承了RecyclerView.ViewHolder 表示一行只有一个布局 ，代码如下：（请自觉忽略我设置的点击事件）

public class ViewHplder_match extends RecyclerView.ViewHolder {

public ImageView goods_img_one;
public MyRecyclerViewAdapter.OnRecyclerViewItemClickListener mOnItemClickListener=null;

public ViewHplder_match(View itemView,
final MyRecyclerViewAdapter.OnRecyclerViewItemClickListener
mOnItemClickListener) {
super(itemView);
goods_img_one=(ImageView)itemView.findViewById(R.id.goods_img_one);
this.mOnItemClickListener=mOnItemClickListener;
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(mOnItemClickListener!=null){
mOnItemClickListener.onItemClick(v,getPosition());
}
}
});
}
}

当然ViewHplder_two和ViewHplder_four的实现也是特别类似的，主要实现布局样式就跟实现一个布局样式没有什么两样，自行脑补；

下面是MyRecyclerViewAdapter的实现：

public class MyRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

private Context context;
private List<Goods> list;

public MyRecyclerViewAdapter(Context context,List<Goods> mlist){
this.context=context;
this.list=mlist;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

View view=null;
RecyclerView.ViewHolder holder=null;

switch (viewType){
case 0:
view= LayoutInflater.from(context).inflate(R.layout.holder_lauout_match,null);
holder=new ViewHplder_match(view,mOnItemClickListener);
break;
case 1:
view=LayoutInflater.from(context).inflate(R.layout.holder_lauout_two,null);
holder=new ViewHplder_two(view,mOnItemClickListener);
break;
case 2:
view=LayoutInflater.from(context).inflate(R.layout.holder_lauout_four,null);
holder=new ViewHplder_four(view,mOnItemClickListener);
break;
}

return holder;
}

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

int itemtype=getItemViewType(position);
switch (itemtype){
case 0:
ViewHplder_match vh1= (ViewHplder_match) holder;
vh1.goods_img_one.setImageDrawable(list.get(position).getGoodsimage());
break;
case 1:
ViewHplder_two vh2= (ViewHplder_two) holder;
vh2.goods_img_two.setImageDrawable(list.get(position).getGoodsimage());
vh2.goods_nm_two.setText(list.get(position).getGoodsname());
break;
case 2:
ViewHplder_four vh3= (ViewHplder_four) holder;
vh3.goods_image.setImageDrawable(list.get(position).getGoodsimage());
vh3.goods_name.setText(list.get(position).getGoodsname());
vh3.goods_value.setText(list.get(position).getGoodsvalue());
break;
}

}

@Override
public int getItemCount() {
return list.size();
}

@Override
public int getItemViewType(int position) {
if (position < 1) {
return 0;
} else if (3 <= position && position < 7) {
return 1;
} else return 2;
}

/**
* 下面是有关点击事件的一些东西
*/

private OnRecyclerViewItemClickListener mOnItemClickListener=null;

public interface OnRecyclerViewItemClickListener{
void onItemClick(View view , int pos);
}

public void setRecyclerViewOnItemClickListener(OnRecyclerViewItemClickListener listener) {
this.mOnItemClickListener = listener;
}
}

好了，RecyclerView的多种布局是不是特别简单，说白了也就是根据item在list中的position给布局分个类而已；