Android-viewpager里不显示listview

Question

代码如下：

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ViewPager vp=(ViewPager) findViewById(R.id.vp);
        
        //viewpager
        //初始化views数据
        List<View>views=new ArrayList<View>();
        LayoutInflater inflater=LayoutInflater.from(this);
        views.add(inflater.inflate(R.layout.viewpager_menu, null));
        views.add(inflater.inflate(R.layout.viewpager_order, null));
        
        List<String>titles=new ArrayList<String>();
        titles.add("菜单界面");
        titles.add("订单界面");
        
        EasyEatAdapter adapter=new EasyEatAdapter(views,titles);
        vp.setAdapter(adapter);
        
        
        //listView
        
        View orderView=inflater.inflate(R.layout.viewpager_order,null);
        ListView lv=(ListView) orderView.findViewById(R.id.lv_order);
        List<Order>data=new ArrayList<Order>();
        data.add(new Order(R.drawable.img, "张三1", "18812345678", 3, "18:20", ""));
        data.add(new Order(R.drawable.img, "张三2", "18812345678", 3, "18:20", ""));
        data.add(new Order(R.drawable.img, "张三3", "18812345678", 3, "18:20", ""));
        data.add(new Order(R.drawable.img, "张三4", "18812345678", 3, "18:20", ""));
        data.add(new Order(R.drawable.img, "张三5", "18812345678", 3, "18:20", ""));
        data.add(new Order(R.drawable.img, "张三6", "18812345678", 3, "18:20", ""));
        data.add(new Order(R.drawable.img, "张三7", "18812345678", 3, "18:20", ""));
        data.add(new Order(R.drawable.img, "张三8", "18812345678", 3, "18:20", ""));
        OrderAdapter adapter2=new OrderAdapter(data);
        lv.setAdapter(adapter2);
    }
    
    
    //viewpager
    class EasyEatAdapter extends PagerAdapter{
        
        private List<View>views;
        private List<String>titles;
        
        public EasyEatAdapter (List<View>views,List<String>titles) {
            this.views=views;
            this.titles=titles;
        }
        
        
        //得到标题
        @Override
        public CharSequence getPageTitle(int position) {
            return titles.get(position);
        }
        
        //得到数量
        @Override
        public int getCount() {
            return views.size();
        }
        
        //滑动后页面
        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            View view=views.get(position);
            container.addView(view);
            return view;
        }
        
        //销毁页面
        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            View view=views.get(position);
            container.removeView(view);
            
        }
        
        @Override
        public boolean isViewFromObject(View view, Object object) {
            return view==object;
        }
        
    }
    
    
    //listView
    class OrderAdapter extends BaseAdapter{
        private List<Order>data;
        
        public OrderAdapter(List<Order>data){
            this.data=data;
        }
        
        //说明listview有多少个条目
        @Override
        public int getCount() {
            return data.size();
        }

        //得到指定position 的条目
        @Override
        public Object getItem(int position) {
            return data.get(position);
        }

        //得到条目的ID
        @Override
        public long getItemId(int position) {
            return position;
        }

        
        
        //说明每个条目的布局
        //convertView:缓存的条目
        //parent:ListView
        //返回值作为ListView的一个条目
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            Order order=data.get(position);
            if(convertView==null){
                LayoutInflater inflater=LayoutInflater.from(MainActivity.this);
                convertView=inflater.inflate(R.layout.listview_item_order, null);
            }
            
            TextView tvName=(TextView) convertView.findViewById(R.id.tv_name);
            TextView tvNumber=(TextView) convertView.findViewById(R.id.tv_number);
            TextView tvPhone=(TextView) convertView.findViewById(R.id.tv_phone);
            TextView tvTime=(TextView) convertView.findViewById(R.id.tv_time);
            TextView tvId=(TextView) convertView.findViewById(R.id.tv_id);
            TextView tvRemark=(TextView) convertView.findViewById(R.id.tv_remark);
            ImageView ivPic=(ImageView) convertView.findViewById(R.id.imageView1);
            
            
            //设置数据
            tvName.setText(order.getName());
            tvNumber.setText(String.valueOf(order.getNumber()));
            tvPhone.setText(order.getPhone());
            tvTime.setText(order.getTime());
            tvId.setText(String.valueOf(order.getId()));
            tvRemark.setText(order.getRemarkString());
            ivPic.setImageResource(order.getId());
            return convertView;
        }
        
    }
}

Answer 1

views.add(inflater.inflate(R.layout.viewpager_menu, null));
views.add(inflater.inflate(R.layout.viewpager_order, null));

View orderView=inflater.inflate(R.layout.viewpager_order,null);
ListView lv=(ListView) orderView.findViewById(R.id.lv_order);

擦 ，这么明显，这要是能显示就怪了。上面加的和下面你设置listview的那个orderview,虽然是同一个布局文件，但是明显是两个不同的view好不好。