Adapter万能适配器，只要3行

标签：适配器   万能   

废话不多说，先上图一个匿名内部类，一个适配器完成+两项listview优化

注：holder.setText()是把取view操作提取而已，如果需要操作imageview添加个 setImageView即可

so easy！

想要跟上面代码一样简单，ok  导入我的两个类

至于两个类怎么写的，稍微花下时间看下，应该就明白

类1 ViewHodler.java

package com.zhuimore.iqzone.adapter.base;

import android.content.Context;
import android.util.SparseArray;
import android.view.View;
import android.widget.TextView;

public class ViewHolder {
	
	private View mConvertView;
	//对于key和valse为int、Obj的 用SparseArray比map效率高
	private SparseArray<View> mViews = new SparseArray<View>();

	public ViewHolder() {
	}

	public void init(Context context, int layoutId, View convertView) {
		if (convertView == null) {
			convertView = View.inflate(context, layoutId, null);
			convertView.setTag(this);
			this.mConvertView = convertView;
		}
	}

	public View getView(int viewId) {
		View v = mViews.get(viewId);
		if (v == null) {
			v = mConvertView.findViewById(viewId);
		}
		return v;
	}

	public View getConvertView() {
		return mConvertView;
	}

	public ViewHolder setText(int viewId, String content) {
		TextView v = (TextView) mViews.get(viewId);
		if (v == null) {
			v = (TextView) mConvertView.findViewById(viewId);
		}
		v.setText(content);
		return this;
	}

}

package com.zhuimore.iqzone.adapter.base;

import java.util.List;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;

public abstract class AdapterBestBase<T> extends BaseAdapter {

	public Context mContext;
	public List<T> mList;
	public ViewHolder holder;
	public int layoutId;

	public AdapterBestBase(Context context, int layoutId, List<T> mList) {
		this.mContext = context;
		this.mList = mList;
		this.layoutId = layoutId;
		//一个adapter  一个holder
		holder = new ViewHolder();
	}

	public List<T> getList() {
		return mList;
	}

	public void appendToList(List<T> list) {
		if (list == null) {
			return;
		}
		mList.addAll(list);
		notifyDataSetChanged();
	}

	public void appendToTopList(List<T> list) {
		if (list == null) {
			return;
		}
		mList.addAll(0, list);
		notifyDataSetChanged();
	}

	public void appendT(T object) {
		if (object == null) {
			return;
		}
		mList.add(object);
		notifyDataSetChanged();
	}

	public void removeT(T object) {
		if (object == null) {
			return;
		}
		mList.remove(object);
		notifyDataSetChanged();
	}

	public void clear() {
		mList.clear();
		notifyDataSetChanged();
	}

	@Override
	public int getCount() {
		return mList.size();
	}

	@Override
	public T getItem(int position) {
		if (position > mList.size() - 1) {
			return null;
		}
		return mList.get(position);
	}

	@Override
	public long getItemId(int position) {
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		//检测convertView
		holder.init(mContext, layoutId, convertView);
		//回调 
		getExView(holder, getItem(position));
		return holder.getConvertView();
	}

	protected abstract void getExView(ViewHolder holder, T t);

}

Adapter万能适配器，只要3行

标签：适配器   万能   

原文地址：http://blog.csdn.net/u013134391/article/details/45891989