android 多类型listview
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http://blog.163.com/benben_long/blog/static/199458243201462432214930/
当我们需要在ListView中显示多种视图时,仍然使用继承BaseAdapter的方式,要注意的是getItemViewType(int position)和getViewTypeCount()这两个方法。
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
[java] view plaincopy
- class RunRankAdapter extends BaseAdapter {
- ArrayList<HashMap<String, Object>> ls;
- Context mContext;
- LinearLayout linearLayout = null;
- LayoutInflater inflater;
- TextView tex;
- final int VIEW_TYPE = 3;
- final int TYPE_1 = 0;
- final int TYPE_2 = 1;
- final int TYPE_3 = 2;
- 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 0;
- }
- // 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 == 0)
- return TYPE_1;
- else if (p == 1)
- return TYPE_2;
- else
- return TYPE_3;
- }
- @Override
- public int getViewTypeCount() {
- return 3;
- }
- @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 + 1));
- holder1.time1.setText(ls.get(position).get("time").toString());
- break;
- case TYPE_2:
- holder2.rank2.setText("" + (position + 1));
- holder2.time2.setText(ls.get(position).get("time").toString());
- holder2.totaldistance2.setText(ls.get(position)
- break;
- case TYPE_3:
- holder3.rank3.setText("" + (position + 1));
- 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
[java] view plaincopy
- 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);
还有一种方法:
在主布局文件中包含一个LinearLayout. 并且设置android:orientation="vertical"
定义两种不同的布局文件,然后代码中,根据不同条件调用.addview向LinearLayout加载就可以了
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