具有多个布局的Android ListView [英] Android ListView with multiple layouts

问题描述

我必须显示具有不同视图类型的列表.因此，我必须定义一个带有适配器的ListView，在其中必须膨胀多个视图.我已经通过给出的示例进行了检查，但问题是我的列表不像示例那样对称标头在4个项目之后每次重复.所以我遇到了getView()

I have to show a list with different type of Views. So I have to define a ListView with an Adapter where I have to inflate multiple views. I have gone through example given, but problem is for my list is not symmetric like the example where header is repeated each time after 4 items. So I am facing problem with reuse of items in getView()

 public View getView(int position, View convertView, ViewGroup parent) {   
    int type = getItemViewType(position);
    if (convertView == null) {
        holder = new ViewHolder();
        switch (type) {
             case TYPE_1:
             convertView = mInflater.inflate(R.layout.item1, null);
             .......
             break;

             case TYPE_2:
             convertView = mInflater.inflate(R.layout.item2, null);
             .......
             break;
        }
        convertView.setTag(holder);
    } else {
        holder = (ViewHolder)convertView.getTag();
    }
    ............
    ............
}

现在，如果convertView不为null，但是之前使用的项类型不同，则布局将不匹配.此代码将如何处理此问题?

Now if the convertView is not null, but the item type for which it was earlier used was different, then the layout will not match with same. How this code will handle this issue?

推荐答案

您可以查看此示例适配器. getViewTypeCount方法返回您的不同类型的行. getItemViewType方法，如果position等于0，则对第一行布局进行膨胀，否则对其他行布局进行膨胀.您可以自定义此代码示例.

You can look this example adapter. getViewTypeCount method return your different type row. getItemViewType method, if position equals 0 inflate first row layout else inflate other row layout. You can customize this code example.

    import java.util.List;
    import android.app.Activity;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.ArrayAdapter;

    /**
     * Created by MustafaS on 9.2.2015.
     */
    public class CustomArrayAdapter extends ArrayAdapter<YourModel> {

       @Override
       public int getItemViewType(int position) {

          if (position == 0) {
             return 0;
          }
          else {
             return 1;
          }
       }

       @Override
       public int getViewTypeCount() {
          return 2;
       }

       @Override
       public View getView(int position, View convertView, ViewGroup parent) {
          int type = getItemViewType(position);
          if (type == 0) {
             if (convertView == null) {
                convertView = LayoutInflater.from(activity).inflate(R.layout.listview_first_row, parent, false);
                viewHolderFirst = new ViewHolderFirst();
                convertView.setTag(viewHolderFirst);
             }
             else {
                viewHolderFirst = (ViewHolderFirst) convertView.getTag();
             }

          }
          else {
             if (convertView == null) {
                convertView = LayoutInflater.from(activity).inflate(R.layout.listview_other_row, parent, false);
                viewHolder = new ViewHolder();

             }
             else {
                viewHolder = (ViewHolder) convertView.getTag();
             }
          }
          return convertView;
       }

       protected class ViewHolderFirst {
          private RunnableViewPager pager;
          private CircleIndicator   indicator;
       }

       protected class ViewHolder {
          private ImageView imageviewRestaurant;
          private TextView  textviewRestaurantName;
          private TextView  textviewType;
          private TextView  textviewPrice;
          private TextView  textviewDistance;
          private ImageView imageviewCall;
          private ImageView imageviewCalendar;
       }
    }

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