Android ListView中 每一项都有不同的布局

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 = 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

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);

利用type为Listview的item设置不同的布局