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Android MaoZhuaWeiBo Adapter ListView优化及发送微博 - 4
这一篇主要给大家说说Adapter ListView优化及发送微博,我们都知道Android在一些比较耗内存的类里,为了尽量避免浪费内
存,我们需要对我们的组件之类的进行优化,使其节约不必要的资源浪费
自定义适配器:
package com.neweriweibo.adapter; /** * 适配器 * @author Engineer-Jsp * @date 2014.10.28 * */ import java.util.ArrayList; import com.neweriweibo.R; import com.neweriweibo.model.UserWeiBiInfo; import com.squareup.picasso.Picasso; import android.content.Context; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.TextView; public class MessageAdapter extends BaseAdapter { private Context mContext ; private ArrayList<UserWeiBiInfo> mresult ; private LayoutInflater layoutinflater; public MessageAdapter(Context context, ArrayList<UserWeiBiInfo> result) { mContext = context ; mresult = result ; layoutinflater = LayoutInflater.from(mContext); } @Override public int getCount() { return mresult.size(); } @Override public Object getItem(int position) { return mresult.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder ; View view = convertView ; if(view == null){ holder = new ViewHolder() ; view = layoutinflater.inflate(R.layout.message_list_item, null) ; holder.tvName = (TextView)view.findViewById(R.id.m_tv_username) ; holder.tvMessage = (TextView)view.findViewById(R.id.m_tv_message) ; holder.headimg = (ImageView)view.findViewById(R.id.weibo_item_icon); view.setTag(holder) ; }else{ holder = (ViewHolder) view.getTag() ; } Log.d("微博好友消息-用户名测试:", mresult.get(position).getName()); holder.tvName.setText(mresult.get(position).getName()); Log.d("微博好友消息-内容测试:", mresult.get(position).getOrigtext()); holder.tvMessage.setText(mresult.get(position).getOrigtext()); Log.d("微博好友消息-头像地址测试:", mresult.get(position).getHeadimg()); Picasso.with(view.getContext().getApplicationContext()).load(mresult.get(position).getHeadimg()).into(holder.headimg); return view; } static class ViewHolder{ TextView tvName ; TextView tvMessage ; ImageView headimg; } }
ViewHolder 就是ListView优化办法之一,屡试不爽
发送消息界面:
<img src=http://www.mamicode.com/"http://img.blog.csdn.net/20141104025947645?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvanNwcGluZw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />>目前只带文本发送功能,表情包都在源代码里有,有兴趣的,可以继续开发,下面提供源码学习下载地址:地址:<a target=_blank href=http://www.mamicode.com/"http://download.csdn.net/detail/jspping/8117425" target="_blank">http://download.csdn.net/detail/jspping/8117425>OK,东西又不是很多,关键是掌握方法Android MaoZhuaWeiBo Adapter ListView优化及发送微博 - 4
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