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Android 中自定义 Adapter
来源:互联网   发布日期:2015-10-02 16:20:01   浏览:933次  

导读:public classMyListViewAdapter extendsBaseAdapter { privateContext mContext= null; privateLayoutInflater mLayoutInflater= null; privateListMapString, Object mList= null; //构造方法,参数list传递的就是这一组数据的信息 publicMyListViewAdapter...

public classMyListViewAdapter extendsBaseAdapter {

privateContext mContext= null;

privateLayoutInflater mLayoutInflater= null;

privateList<Map<String, Object>> mList= null;

//构造方法,参数list传递的就是这一组数据的信息

publicMyListViewAdapter(Context context, List<Map<String, Object>> list) {

this.mList= list;

this.mContext= context;

this.mLayoutInflater= LayoutInflater.from(mContext);

}

//得到总的数量

@Override

public intgetCount() {

// TODOAuto-generated method stub

return this.mList!= null? this.mList.size() : 0;

}

//根据位置得到View对象

@Override

publicObject getItem(intposition) {

// TODOAuto-generated method stub

return this.mList.get(position);

}

//根据ListView位置得到List中的ID

@Override

public longgetItemId(intposition) {

// TODOAuto-generated method stub

returnposition;

}

//根据位置得到View对象

@Override

publicView getView(intposition, View convertView, ViewGroup parent) {

// TODOAuto-generated method stub

//得到条目中的子组件

ViewHolder holder = null;

if(convertView == null) {

holder = newViewHolder();

convertView = mLayoutInflater.inflate(R.layout.activity_main_item, null);

holder.imageHead= (ImageView) convertView.findViewById(R.id.imageHead);

holder.name= (TextView) convertView.findViewById(R.id.name);

holder.time= (TextView) convertView.findViewById(R.id.time);

holder.content= (TextView) convertView.findViewById(R.id.content);

holder.imageContent= (ImageView) convertView.findViewById(R.id.imageContent);

holder.transmit= (TextView) convertView.findViewById(R.id.transmit);

holder.comment= (TextView) convertView.findViewById(R.id.comment);

convertView.setTag(holder);

} else{

holder = (ViewHolder) convertView.getTag();

}

//对ListView的Item中的控件的操作

holder.imageHead.setImageResource((Integer) mList.get(position).get("imageHead"));

holder.name.setText(mList.get(position).get("name").toString());

holder.time.setText(mList.get(position).get("time").toString());

holder.content.setText(mList.get(position).get("content").toString());

holder.imageContent.setImageResource((Integer) mList.get(position).get("imageContent"));

holder.transmit.setText(mList.get(position).get("transmit").toString());

holder.comment.setText(mList.get(position).get("comment").toString());

returnconvertView;

}www.2cto.com

// 定义一个内部类来管理条目中的子组件

public final classViewHolder {

publicImageView imageHead= null;

publicImageView imageContent= null;

publicTextView time= null;

publicTextView name= null;

publicTextView content= null;

publicTextView comment= null;

publicTextView transmit= null;

}

}

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