要实现Android RecyclerView制作固定网格布局与合并的行,可以按照以下步骤进行:
public class GridAdapter extends RecyclerView.Adapter {
private List dataList;
public GridAdapter(List dataList) {
this.dataList = dataList;
}
@NonNull
@Override
public GridViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_grid, parent, false);
return new GridViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull GridViewHolder holder, int position) {
String data = dataList.get(position);
holder.textView.setText(data);
// 设置其他控件的数据
// 判断是否需要合并行
if (position % 3 == 0) {
RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) holder.itemView.getLayoutParams();
layoutParams.span = 3; // 设置当前项占据3列
holder.itemView.setLayoutParams(layoutParams);
}
}
@Override
public int getItemCount() {
return dataList.size();
}
static class GridViewHolder extends RecyclerView.ViewHolder {
TextView textView;
public GridViewHolder(@NonNull View itemView) {
super(itemView);
textView = itemView.findViewById(R.id.textView);
}
}
}
RecyclerView recyclerView = findViewById(R.id.recyclerView);
RecyclerView.LayoutManager layoutManager = new GridLayoutManager(this, 3); // 设置为3列的网格布局
recyclerView.setLayoutManager(layoutManager);
List dataList = new ArrayList<>();
// 添加数据到dataList
GridAdapter gridAdapter = new GridAdapter(dataList);
recyclerView.setAdapter(gridAdapter);
通过以上步骤,就可以实现Android RecyclerView制作固定网格布局与合并的行。在适配器的onBindViewHolder
方法中,可以根据需求判断是否需要合并行,并设置当前项的LayoutParams的span属性来实现合并。