片段在屏幕旋转时被调用两次 [英] Fragment is called twice on screen rotation
本文介绍了片段在屏幕旋转时被调用两次的处理方法,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
我是Android新手,更改屏幕方向后会遇到此问题.每当屏幕方向更改时, fragment
都会被调用两次.以下是我的代码示例.我检查了其他帖子,但找不到答案.任何人都可以指导我.
I am new to android, and i am facing this problem when the screen orientation is changed. The fragment
gets called twice whenever screen orientation changes. Below is the sample of my code. I checked other posts, but couldnt find answer. Anyone guide me through this.
public class SampleFragment extends Fragment {
static final String TAG_NAME = SampleFragment.class.getSimpleName();
List<PhrToolBar> mToolBarList;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
DaggerHelper.getAppProviderComponent().inject(this);
mRootView = null;
getActivity().setTitle("Personal Health Records");
mRootView = inflater.inflate(R.layout.sample_phr_main_fragment, container, false);
mBinding = DataBindingUtil.bind(mRootView);
mBinding.setViewModel(mViewModel);
setHasOptionsMenu(true);
return mRootView;
}
推荐答案
简单添加此代码
if (savedInstanceState == null) {
// only create fragment if activity is started for the first time
mFragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = mFragmentManager.beginTransaction();
FragmentOne fragment = new FragmentOne();
fragmentTransaction.add(R.id.fragment_container, fragment);
fragmentTransaction.commit();
} else {
// do nothing - fragment is recreated automatically
}
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