android设置GridView高度自适应，实现全屏铺满效果

public static void setGridViewMatchParent(GridView gridView ) {  
    // 获取gridView的adapter  
       ListAdapter adapter = gridView.getAdapter();  
       if (adapter == null) {  
           return;  
       }  
       // 固定列宽，有多少列  
       int col = 2;// gridView.getNumColumns();  
       int totalHeight = 0;  
       // i每次加2，相当于adapter.getCount()小于等于2时 循环一次，计算一次item的高度， adapter.getCount()小于等于8时计算两次高度相加  
       for (int i = 0; i < adapter.getCount(); i += col) {  
        // 获取listview的每一个item  
           View listItem = adapter.getView(i, null, gridView);  
           listItem.measure(0, 0);  
           // 获取item的高度和  
           totalHeight += listItem.getMeasuredHeight();  
       }  
  
       // 获取gridView的布局参数  
       ViewGroup.LayoutParams params = gridView.getLayoutParams();  
       // 设置高度  
       params.height = totalHeight;  
       // 设置margin  
       ((MarginLayoutParams) params).setMargins(10, 10, 10, 10);  
       // 设置参数  
       gridView.setLayoutParams(params);  
   }