FragmentActivity+FragmentTabHost+Fragement instead of TabActibvity+TabHost+Activity

http://www.tuicool.com/articles/NzeMJz

http://www.tuicool.com/articles/FJ7VBb

FragmentTabHost切换Fragment时避免UI重新加载


不过,初次实现时发现有个缺陷,每次FragmentTabHost切换fragment时会调用onCreateView()重绘UI。

解决方法,在fragment onCreateView 里缓存View:

Java代码 收藏代码
private View rootView;// 缓存Fragment view

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
{
Log.i(TAG, "onCreateView");

if (rootView == null)
{
rootView = inflater.inflate(R.layout.fragment_1, null);
}
// 缓存的rootView需要判断是否已经被加过parent,如果有parent需要从parent删除,要不然会发生这个rootview已经有parent的错误。
ViewGroup parent = (ViewGroup) rootView.getParent();
if (parent != null)
{
parent.removeView(rootView);
}
return rootView;
}

原文地址:https://www.cnblogs.com/ZacharyHodgeZou/p/3953720.html