Question

我在AppCompatActivity的xml中有一个静态的v4.app.Fragment，当我启动应用程序时，一切都显示出来，但是一旦我进入另一个活动并回来，或者切换到另一个应用程序并切换回来，片段无法看到，而片段的Log.d显示片段存在于某处。我也尝试过使用getsupportfragmentmanager.add.commit以编程方式添加片段，结果相同

activity_main.xml中 ...

<FrameLayout
    android:id="@+id/content_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <fragment
        android:id="@+id/fragment"
        android:name="xxx.xxx.xxx.Fragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</FrameLayout>

<android.support.design.widget.FloatingActionButton
...

MainActivity.java

@BindView(R.id.toolbar) Toolbar toolbar;
@BindView(R.id.fab) FloatingActionButton fab;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ButterKnife.bind(MainActivity.this);
...
No onResume, onCreateView, etc

XFragment.java

public class XFragment extends Fragment {

@BindView(R.id.swipeRefreshLayout) SwipeRefreshLayout swipeRefreshLayout;
@BindView(R.id.recyclerView) RecyclerView recyclerView; 
// and a lot of other variables

public XFragment() {

}

public static XFragment newInstance(boolean isSearch) {
    XFragment xFragment = new XFragment();
    return xFragment;
}

@Override
public void onResume() {
    Log.d(TAG, "onResume");
    super.onResume();
    //initiate variables
    inflateRecyclerView();
    //etc
}

@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.d(TAG, "onCreate");
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    Log.d(TAG, "onCreateView");
    View view = inflater.inflate(R.layout.fragment_x, container, false);
    ButterKnife.bind(this, view);
    return view;
}

@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    Parcelable parcelable = llm.onSaveInstanceState();
    outState.putParcelable("LM", parcelable);
}

@Override
public void onViewStateRestored(@Nullable Bundle savedInstanceState) {
    Log.d(TAG, "onViewStateRestored");
    super.onViewStateRestored(savedInstanceState);
    if (savedInstanceState != null) {
      llm = savedInstanceState.onRestoreInstanceState(savedInstanceState.getParcelable("LM"));
    }
}

public void inflateRecyclerView() {
    //use retrofit to call api
}

P.S。：当我动态添加它时，我在活动中隐藏了findViewById，然后使用

XFragment f = new XFragment.newInstance();
getSupportFragmentManager().beginTransaction()
                .add(R.id.fragment_container, f).commit();

Answer 1

抱歉，我知道导致问题的原因。我一直在使用一个库调用DynamicBox，它似乎导致了问题。我不知道我做错了什么或者那个库还有bug。耶...

看不到碎片

1 个答案: