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getViewTypeCount不能少,一般的同一种item的列表是不用这两个函数的重载的，但是如果需要不同种类的item，就必须重载这两个

	class RunRankAdapter extends BaseAdapter {
		ArrayList> 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> 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> runRank;  
ListView lv_runRank;
runRank = new ArrayList>();  
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

需要注意的地方：adapter中的getViewTypeCount()方法一定要重载，返回值应该是不同布局的种类数