布局嵌套时显示不全的问题 PullToRefreshRecyclerView，状态栏，GridView

public class MeasureUtil {
public static int getScrolledDistance(PullToRefreshRecyclerView pullToRefreshRecyclerView){
LinearLayoutManager layoutManager = (LinearLayoutManager) pullToRefreshRecyclerView.getLayoutManager();
View childAt = pullToRefreshRecyclerView.getChildAt(0);
int firstVisibleItemPosition = layoutManager.findFirstVisibleItemPosition();
int height = childAt.getHeight();
int decoratedBottom = layoutManager.getDecoratedBottom(childAt);
return (firstVisibleItemPosition+1)* height - decoratedBottom;
}

public static int getStatusBarHeight(Context context){
Class<?> c = null;
Object obj = null;
Field field = null;
int x = 0, statusBarHeight = 0;
try {
c = Class.forName("com.android.internal.R$dimen");
obj = c.newInstance();
field = c.getField("status_bar_height");
x = Integer.parseInt(field.get(obj).toString());
statusBarHeight = context.getResources().getDimensionPixelSize(x);
} catch (Exception e1) {
e1.printStackTrace();
}
return statusBarHeight;
}

public static void setListViewHeightBasedOnChildren(ListView listView) {
if(listView == null) return;
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null) {
// pre-condition
return;
}
int totalHeight = 0;
for (int i = 0; i < listAdapter.getCount(); i++) {
View listItem = listAdapter.getView(i, null, listView);
listItem.measure(0, 0);
totalHeight += listItem.getMeasuredHeight();
}
ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
listView.setLayoutParams(params);
}

public static void reMesureGridViewHeight(GridView gridView) {
// 获取GridView对应的Adapter
ListAdapter listAdapter = gridView.getAdapter();
if (listAdapter == null) {
return;
}
int rows;
int columns = 0;
int horizontalBorderHeight = 0;
Class<?> clazz = gridView.getClass();
try {
// 利用反射，取得每行显示的个数
Field column = clazz.getDeclaredField("mRequestedNumColumns");
column.setAccessible(true);
columns = (Integer) column.get(gridView);
//          columns = gridView.getNumColumns();//Call requires API level 11

// 利用反射，取得横向分割线高度
Field horizontalSpacing = clazz.getDeclaredField("mRequestedHorizontalSpacing");
horizontalSpacing.setAccessible(true);
horizontalBorderHeight = (Integer) horizontalSpacing.get(gridView);

//          horizontalBorderHeight = gridView.getHorizontalSpacing();//Call requires API level 16
} catch (Exception e) {
e.printStackTrace();
}
// 判断数据总数除以每行个数是否整除。不能整除代表有多余，需要加一行
if (listAdapter.getCount() % columns > 0) {
rows = listAdapter.getCount() / columns + 1;
} else {
rows = listAdapter.getCount() / columns;
}
int totalHeight = 0;
for (int i = 0; i < rows; i++) { // 只计算每项高度*行数
View listItem = listAdapter.getView(i, null, gridView);
listItem.measure(0, 0); // 计算子项View 的宽高
totalHeight += listItem.getMeasuredHeight(); // 统计所有子项的总高度
}
ViewGroup.LayoutParams params = gridView.getLayoutParams();
params.height = totalHeight + horizontalBorderHeight * (rows - 1);// 最后加上分割线总高度
gridView.setLayoutParams(params);
}
}