The ListView item in the Android layout file ScrollView does not show the full solution

Import Android.content.Context;
Import Android.util.AttributeSet;
Import Android.widget.ListView;

/**
* Created by Wanqi on 15-7-20.
*/
public class Scrolllistview extends ListView {

    Public Scrolllistview (context context, AttributeSet Attrs) {
        Super (context, attrs);
    }
    @Override
    protected void onmeasure (int widthmeasurespec, int heightmeasurespec) {
    Calculates the height and width of each child according to the pattern
    int expandspec = Measurespec.makemeasurespec (integer.max_value >> 2, measurespec.at_most);
        Super.onmeasure (Widthmeasurespec, Expandspec);
    }
}

Applied in an XML file;

  <com.cs.ronghui.list.mylistview                
Android:id= "@+id/procutsugid"               
Android:layout_width= "Fill_parent"              
android:layout_height= "Wrap_content"               />  

The ListView item in the Android layout file ScrollView solution is not fully displayed