微调器和回收器的通用适配器查看
问题描述:
可以为不同的视图写通用适配器吗?我对通用适配器recyclerView
和spinner
感兴趣。在我的项目中,我有RecyclerView
和Spinner,我想为两者编写基本通用适配器(RecyclerView
和Spinner
) 您能帮我吗?微调器和回收器的通用适配器查看
答
是的,你可以实现ListView
/Spinner
和RecyclerView
public static class CommonAdapter extends RecyclerView.Adapter<CommonAdapter.RecycleViewHolder>
implements ListAdapter {
private Context mContext;
private List<String> data;
public CommonAdapter(Context context, List<String> data) {
mContext = context;
this.data = data;
}
// Start of recycleview adapter
@Override
public RecycleViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new RecycleViewHolder(new TextView(mContext));
}
@Override
public void onBindViewHolder(RecycleViewHolder holder, int position) {
holder.textView.setText(data.get(position));
}
@Override
public int getItemCount() {
return getCount();
}
public static class RecycleViewHolder extends RecyclerView.ViewHolder {
public TextView textView;
public RecycleViewHolder(View itemView) {
super(itemView);
textView = (TextView) itemView;
}
}
// Implementation of list adapter(Spinner/ListView)
@Override
public boolean areAllItemsEnabled() {
return true;
}
@Override
public boolean isEnabled(int position) {
return true;
}
@Override
public void registerDataSetObserver(DataSetObserver observer) {
}
@Override
public void unregisterDataSetObserver(DataSetObserver observer) {
}
@Override
public int getCount() {
return data.size();
}
@Override
public String getItem(int position) {
return data.get(position);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
SpinnerViewHolder holder;
if (convertView == null) {
convertView = new TextView(mContext);
holder = new SpinnerViewHolder();
holder.textView = (TextView) convertView;
convertView.setTag(holder);
} else {
holder = (SpinnerViewHolder) convertView.getTag();
}
holder.textView.setText(getItem(position));
return convertView;
}
@Override
public int getViewTypeCount() {
return 0;
}
@Override
public boolean isEmpty() {
return false;
}
public static class SpinnerViewHolder {
public TextView textView;
}
}
一个共同的适配器,这是做这件事的基本理念,您可以genirify更要使用同一个适配器的所有不同ListView
/RecyclerView
也有不同的数据类型。但截至目前,我正在给出组合适配器的基本概念。
适配器延伸其通过RecyclerView
所需的RecyclerView.ViewHolder
和我在执行相同的类ListAdapter
其通过ListView
/Spinner
必需的。
非常棒!谢谢 – Sky