转载请注明出处：https://blog.csdn.net/a512337862/article/details/82498400

前言

CommonBaseAdapter 是对 BaseAdapter进行简单的封装，减少部分冗余代码，只需要重写三个方法:

getLayoutResId() : 返回 adapter 对应的layout文件ID
bindView() : 返回 layout文件所有需要操作的View的ID
initData(ViewHolder holder, T t, int position) : 通过ViewHolder.getViewById获取对应的View，进行绑定显示数据,增加回调监听等操作

CommonBaseAdapter

/** * Author ： BlackHao * Time : 2018/9/4 14:11 * Description : ListView/GridView BaseAdapter */public abstract class CommonBaseAdapter<T> extends BaseAdapter {    private List list;    private Context context;    public CommonBaseAdapter(List list, Context context) {        this.list = list;        this.context = context;    }    @Override    public int getCount() {        return list == null ? 0 : list.size();    }    @Override    public Object getItem(int position) {        return list.get(position);    }    @Override    public long getItemId(int position) {        return position;    }    @SuppressWarnings("unchecked")    @Override    public View getView(int position, View convertView, ViewGroup parent) {        ViewHolder viewHolder;        if (convertView == null) {            convertView = View.inflate(context, getLayoutResId(), null);            viewHolder = new ViewHolder();            //将控件与 ViewHolder 绑定            int[] viewIdArray = bindView();            for (int aViewIdArray : viewIdArray) {                viewHolder.bindViewById(convertView, aViewIdArray);            }            convertView.setTag(viewHolder);        } else {            viewHolder = (ViewHolder) convertView.getTag();        }        initData(viewHolder, list.get(position), position);        return convertView;    }    /**     * 获取 layout 文件     *     * @return layout 文件 ID     */    protected abstract int getLayoutResId();    /**     * 将控件与 ViewHolder 绑定     *     * @return 需要绑定的控件 ID 数组     */    protected abstract int[] bindView();    /**     * 绑定显示数据,增加回调监听等操作     *     * @param holder   ViewHolder     * @param position 对应的位置     * @param t        list.get(position)数据     */    protected abstract void initData(ViewHolder holder, T t, int position);    public class ViewHolder {        private SparseArray viewSparseArray;        ViewHolder() {            this.viewSparseArray = new SparseArray<>();        }        /**         * 通过 id获取 View         *         * @param id  View ID         * @param  View 类型         * @return 对应的 View         */        @SuppressWarnings("unchecked")        public extends View> E getViewById(@IdRes int id) {            return (E) viewSparseArray.get(id);        }        /**         * 通过 id 获取 View并绑定到 ViewHolder         *         * @param view 布局文件 View         * @param id   View ID         */        public void bindViewById(View view, @IdRes int id) {            viewSparseArray.put(id, view.findViewById(id));        }    }}

TestAdapter

/** * Author ： BlackHao * Time : 2018/9/4 14:58 * Description : TestAdapter */public class TestAdapter extends CommonBaseAdapter<String> {    public TestAdapter(List list, Context context) {        super(list, context);    }    @Override    protected int getLayoutResId() {        return R.layout.adapter_test;    }    @Override    protected int[] bindView() {        return new int[]{R.id.test_iv, R.id.test_tv};    }    @Override    protected void initData(ViewHolder holder, String s, int position) {        TextView tv = holder.getViewById(R.id.test_tv);        ImageView iv = holder.getViewById(R.id.test_iv);        tv.setText("Position:" + position + "  Content : " + s);        if (s.endsWith("pdf")) {            iv.setBackgroundResource(R.drawable.pdf);        } else if (s.endsWith("ppt")){            iv.setBackgroundResource(R.drawable.ppt);        }else {            iv.setBackgroundResource(R.drawable.unkown_file);        }    }}

结语

下载地址： https://github.com/LuoChen-Hao/BlackHaoUtil

Android(安卓)BaseAdapter 简单封装

前言

CommonBaseAdapter

TestAdapter

结语

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