Question

我试图从ButterKnife迁移到Android数据绑定。

使用ButterKnife时（工作正常）：

// Called after a network call
public void updateView(MyAdapter adapter, String title) {
    toolbar.setTitle(title);
    recyclerView.setHasFixedSize(true);
    LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
    recyclerView.setLayoutManager(layoutManager);
    recyclerView.setAdapter(adapter);
}

使用Android数据绑定：

public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    binding = MyFragmentBinding.inflate(inflater, container, false);
    binding.toolbar.setTitle(R.string.app_name); // this works
    return binding.getRoot();
}

// Called after a network call
public void updateView(MyAdapter adapter, String title) {
    binding.toolbar.setTitle(title);
    binding.recyclerView.setHasFixedSize(true);
    LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
    binding.recyclerView.setLayoutManager(layoutManager);
    binding.recyclerView.setAdapter(adapter);
}

在稍后的代码上调用updateView后，屏幕变为空白。我进行了调试，发现视图仍然附加到片段。

此外，如果我正在更新onCreateView内的内容，那么可以。

我有什么不对的吗？

布局：

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<android.support.design.widget.CoordinatorLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:layout_alignParentTop="true"
        android:background="?attr/colorPrimary"
        android:elevation="@dimen/_6sdp"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
        app:navigationIcon="@drawable/default_nav_icon_back"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="?attr/actionBarSize" />

</android.support.design.widget.CoordinatorLayout>
</layout>

无法通过Android上的数据绑定更新视图

0 个答案: