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android listview万能适配器

發布時間:2025/4/16 编程问答 17 豆豆
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參考 ?? Android 快速開發系列 打造萬能的ListView GridView 適配器     Hongyang

public class CommonViewHolder {private Context context;private int position;private int layoutId;private View convertView;private SparseArray<View> views;private CommonViewHolder(Context context, ViewGroup parent, int layoutId, int position) {this.context = context;this.layoutId = layoutId;this.position = position;views = new SparseArray<>();convertView = View.inflate(context, layoutId, null);convertView.setTag(this);}public static CommonViewHolder getInstance(Context context, ViewGroup parent, int resId, int position, View convertView) {if (convertView == null) {return new CommonViewHolder(context, parent, resId, position);} else {CommonViewHolder holder = (CommonViewHolder) convertView.getTag();holder.position = position;return holder;}}public int getPosition() { return position; }public View getConvertView() { return convertView; }public <T extends View> T getView(int viewId) {View view = views.get(viewId);if (view == null) {view = this.convertView.findViewById(viewId);views.put(viewId, view);}return (T) view;}public CommonViewHolder setText(int viewId, String text) {((TextView) getView(viewId)).setText(text);return this;}public CommonViewHolder setImageResource(int viewId, int resId) {((ImageView) getView(viewId)).setImageResource(resId);return this;}public CommonViewHolder setOnClickListener(int viewId, View.OnClickListener onClickListener) {getView(viewId).setOnClickListener(onClickListener);return this;} }

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public abstract class CommonAdapter<T> extends BaseAdapter {private List<T> datas;private Context context;private int layoutId;public CommonAdapter(Context context, List<T> datas, int layoutId) {super();this.datas = datas;this.context = context;this.layoutId = layoutId;}@Overridepublic int getCount() {return datas == null ? 0 : datas.size(); }@Overridepublic T getItem(int position) {return datas.get(position); }@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {CommonViewHolder holder = CommonViewHolder.getInstance(context, parent, layoutId, position, convertView);convert(holder, datas.get(position));return holder.getConvertView();}public abstract void convert(CommonViewHolder holder, T t); }

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轉載于:https://www.cnblogs.com/Westfalen/p/5107945.html

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