旋转时活动内容消失 [英] Activity content disappears when rotating
本文介绍了旋转时活动内容消失的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
具有活动片段,并且轮播内容消失时.知道有什么问题吗?
Have fragment on activity, and when rotation content disappears. Any idea what is wrong?
public class MenuActivity extends AppCompatActivity {
static MenuActivity menuActivity;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
menuActivity = this;
setContentView(R.layout.menu);
App.setContext(this);
if (savedInstanceState == null) {
getFragmentManager().beginTransaction().add(R.id.frameLayout, new MessageListFragment()).commit();
}
}
}
推荐答案
在Fragment内部调用此方法:
inside Fragment call this method:
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setRetainInstance(true);
}
还需要检查View是否为空,并防止重新创建它.
Also you need to check whether View is null or not, and prevent from recreating it.
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
if (view == null) {
view = inflater.inflate(R.layout.fragment, container, false);
// ...
}
return view;
}
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