实现代码
Adapter的代码
其中:ViewHolder分别是三个不同的布局,也就是ListView中每一项的布局
TYPE_1...是三种类型.
在使用不同布局的时候,getItemViewType和getViewType不能少,一般是不用这两个函数的重载的
class RunRankAdapter extends BaseAdapter {
ArrayList<HashMap<String, Object>> ls;
Context mContext;
LinearLayout linearLayout = null;
LayoutInflater inflater;
TextView tex;
final int VIEW_TYPE = ;
final int TYPE_1 = ;
final int TYPE_2 = ;
final int TYPE_3 = ;
public RunRankAdapter(Context context,
ArrayList<HashMap<String, Object>> list) {
ls = list;
mContext = context;
}
@Override
public int getCount() {
return ls.size();
}
@Override
public Object getItem(int position) {
return ls.get(position);
}
@Override
public long getItemId(int position) {
return ;
}
// 每个convert view都会调用此方法，获得当前所需要的view样式
@Override
public int getItemViewType(int position) {
int p = position;
if (p == )
return TYPE_1;
else if (p == )
return TYPE_2;
else
return TYPE_3;
}
@Override
public int getViewTypeCount() {
return ;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder1 holder1 = null;
ViewHolder2 holder2 = null;
ViewHolder3 holder3 = null;
int type = getItemViewType(position);
if (convertView == null) {
inflater = LayoutInflater.from(mContext);
// 按当前所需的样式，确定new的布局
switch (type) {
case TYPE_1:
convertView = inflater.inflate(R.layout.item_runrank1,
parent, false);
holder1 = new ViewHolder1();
holder1.rank1 = (TextView) convertView
.findViewById(R.id.tv_list1_rank);
holder1.time1 = (TextView) convertView
.findViewById(R.id.tv_list1_time);
convertView.setTag(holder1);
break;
case TYPE_2:
convertView = inflater.inflate(R.layout.item_runrank2,
parent, false);
holder2 = new ViewHolder2();
holder2.rank2 = (TextView) convertView
.findViewById(R.id.tv_list2_rank);
holder2.time2 = (TextView) convertView
.findViewById(R.id.tv_list2_time);
convertView.setTag(holder2);
break;
case TYPE_3:
convertView = inflater.inflate(R.layout.item_runrank3,
parent, false);
holder3 = new ViewHolder3();
holder3.rank3 = (TextView) convertView
.findViewById(R.id.tv_list3_rank);
holder3.time3 = (TextView) convertView
.findViewById(R.id.tv_list3_time);
convertView.setTag(holder3);
break;
default:
break;
}
} else {
switch (type) {
case TYPE_1:
holder1 = (ViewHolder1) convertView.getTag();
break;
case TYPE_2:
holder2 = (ViewHolder2) convertView.getTag();
break;
case TYPE_3:
holder3 = (ViewHolder3) convertView.getTag();
break;
}
}
// 设置资源
switch (type) {
case TYPE_1:
holder1.rank1.setText("" + (position + ));
holder1.time1.setText(ls.get(position).get("time").toString());
break;
case TYPE_2:
holder2.rank2.setText("" + (position + ));
holder2.time2.setText(ls.get(position).get("time").toString());
holder2.totaldistance2.setText(ls.get(position)
break;
case TYPE_3:
holder3.rank3.setText("" + (position + ));
holder3.time3.setText(ls.get(position).get("time").toString());
break;
}
return convertView;
}
public class ViewHolder1 {
TextView rank1;
TextView time1;
}
public class ViewHolder2 {
TextView rank2;
TextView time2;
}
public class ViewHolder3 {
TextView rank3;
TextView time3;
}
}
使用方式:
声明并定义自己的Adapter,在ListView中设置他的Adapter
private RunRankAdapter runRankAdapter;
ArrayList<HashMap<String, Object>> runRank;
ListView lv_runRank;
runRank = new ArrayList<HashMap<String, Object>>();
runRankAdapter = new RunRankAdapter(this, runRank);
lv_runRank = (ListView) findViewById(R.id.lv_runRank);
lv_runRank.setAdapter(runRankAdapter);