ScrollView中嵌入ListView，GridView冲突的解决（让ListView全显示出来）

 ScrollView中嵌入原生ListView或GridView，会出现ListView，GridView显示不全的问题。

 解决方法：重新构造一个ListView或GridView，重写OnMeasure()方法：

// ListView

import android.widget.ListView;  
  
public class MyListView extends ListView{  
  
    public MyListView(android.content.Context context,android.util.AttributeSet attrs){  
        super(context, attrs);  
    }  
   
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec)  
    {  
        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,  
                MeasureSpec.AT_MOST);  
        super.onMeasure(widthMeasureSpec, expandSpec);  
  
    }  
      
} 

//GridView

public class MyGridView extends GridView {

    public MyGridView(Context context) {
        super(context);
        // TODO Auto-generated constructor stub
    }

    public MyGridView(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
    }
    
    public MyGridView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        // TODO Auto-generated constructor stub
    }
    
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        // TODO Auto-generated method stub
        
        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,MeasureSpec.AT_MOST);

        super.onMeasure(widthMeasureSpec, expandSpec);
    }