关于ViewGroup 中listview 和GridView数据不能动态更新的解决

    原文来自此网站 http://www.pocketdigi.com/20120701/881.html  

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {

// if (changed) {
int childLeft = 0;
int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
View childView = getChildAt(i);
if (childView.getVisibility() != View.GONE) {
int childWidth = childView.getMeasuredWidth();
childView.layout(childLeft, 0, childLeft + childWidth,childView.getMeasuredHeight());
childLeft += childWidth;
}
}
// }
}

将if(changed) 注释掉就可以及时刷新 listview、gridview 数据