import android.view.View;
import android.view.ViewGroup;
import android.widget.ListAdapter;
import android.widget.ListView;

public class ListViewUnScoll {
   public static void setListViewHeightBasedOnChildren(ListView listView) {
   
          //獲取ListView對應的Adapter

          ListAdapter listAdapter = listView.getAdapter();

          if (listAdapter == null) {

                 return;

          }

          int totalHeight = 0;

          for (int i = 0, len = listAdapter.getCount(); i < len; i++) {   //listAdapter.getCount()返回資料項的數目

                 View listItem = listAdapter.getView(i, null, listView);

                 listItem.measure(0, 0);  //計運算元項View 的寬高

                 totalHeight += listItem.getMeasuredHeight();  //統計所有子項的總高度

          }

          ViewGroup.LayoutParams params = listView.getLayoutParams();

          params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));

          //listView.getDividerHeight()獲取子項間分隔符佔用的高度

          //params.height最後得到整個ListView完整顯示需要的高度

          listView.setLayoutParams(params);

   }
}