Android listview設定多個不同的item樣式
阿新 • • 發佈:2019-02-09
實現程式碼
Adapter的程式碼
其中:ViewHolder分別是三個不同的佈局,也就是ListView中每一項的佈局
TYPE_1...是三種類型.
在使用不同佈局的時候,getItemViewType和getViewType不能少,一般是不用這兩個函式的過載的
- class RunRankAdapter extends BaseAdapter {
- ArrayList<HashMap<String, Object>> ls;
- Context mContext;
-
LinearLayout linearLayout = null
- LayoutInflater inflater;
- TextView tex;
- finalint VIEW_TYPE = 3;
- finalint TYPE_1 = 0;
- finalint TYPE_2 = 1;
- finalint TYPE_3 = 2;
- public RunRankAdapter(Context context,
- ArrayList<HashMap<String, Object>> list) {
- ls = list;
-
mContext = context;
- }
- @Override
- publicint getCount() {
- return ls.size();
- }
- @Override
- public Object getItem(int position) {
- return ls.get(position);
- }
- @Override
- publiclong getItemId(int position) {
- return0;
- }
-
// 每個convert view都會呼叫此方法,獲得當前所需要的view樣式
- @Override
- publicint getItemViewType(int position) {
- int p = position;
- if (p == 0)
- return TYPE_1;
- elseif (p == 1)
- return TYPE_2;
- else
- return TYPE_3;
- }
- @Override
- publicint getViewTypeCount() {
- return3;
- }
- @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);
- // 按當前所需的樣式,確定new的佈局
- 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;
- }
- }
- // 設定資源
- 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;
- }
- publicclass ViewHolder1 {
- TextView rank1;
- TextView time1;
- }
- publicclass ViewHolder2 {
- TextView rank2;
- TextView time2;
- }
- publicclass ViewHolder3 {
- TextView rank3;
- TextView time3;
- }
- }
使用方式:
宣告並定義自己的Adapter,在ListView中設定他的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);
還有一種方法:
在主佈局檔案中包含一個LinearLayout. 並且設定android:orientation="vertical"
定義兩種不同的佈局檔案,然後程式碼中,根據不同條件呼叫.addview向LinearLayout載入就可以了
需要注意的地方:adapter中的getViewTypeCount()方法一定要過載,返回值應該是不同佈局的種類數