BaseViewHolder.java

package com.hansion.hble.sample.adapter;

import android.content.Context;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

/**
 * 通用ViewHolder，避免每个Adapter都需要写ViewHolder
 */
public class BaseViewHolder {

    private SparseArray<View> mView;
    private int mPosition;
    private View mConvertView;

    public BaseViewHolder(Context context, ViewGroup parent, int layoutId, int position) {
        mPosition = position;
        mView = new SparseArray<View>();
        mConvertView = LayoutInflater.from(context).inflate(layoutId, parent, false);
        mConvertView.setTag(this);
    }

    public static BaseViewHolder getViewHolder(Context context, View convertView, ViewGroup parent, int layoutId, int position) {
        if (convertView == null) {
            return new BaseViewHolder(context, parent, layoutId, position);
        } else {
            BaseViewHolder viewHolder = (BaseViewHolder) convertView.getTag();
            viewHolder.mPosition = position;
            return viewHolder;
        }
    }

    public View getConvertView() {
        return mConvertView;
    }

    /** 通过id获取控件 */
    public <T extends View> T getView(int viewId) {
        View view = mView.get(viewId);
        if (view == null) {
            view = mConvertView.findViewById(viewId);
            mView.put(viewId, view);
        }
        return (T) view;
    }
}