我有一个带有recyclerview的片段,它工作正常,只有recyclerview。
有效的原始XML :
<android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/list"
android:name="pt.lusofona.helpnow.HospitalFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:layoutManager="LinearLayoutManager"
tools:context=".HospitalFragment"
tools:listitem="@layout/fragment_hospital" />
我试图添加FAB,所以我添加了约束布局,并且我意识到,如果我在屏幕上添加任何内容,则recyclerview会停止显示项目。
使用以下代码,它将停止显示项目(空白片段):
<android.support.constraint.ConstraintLayout xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<android.support.v7.widget.RecyclerView xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/list"
android:name="pt.lusofona.helpnow.HospitalFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layoutManager="LinearLayoutManager"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:context=".HospitalFragment"
tools:listitem="@layout/fragment_hospital" />
</android.support.constraint.ConstraintLayout>
我检查了类似的答案,但没有帮助。
这是我在HospitalFragment上设置适配器的方式
if (view instanceof RecyclerView) {
Context context = view.getContext();
RecyclerView recyclerView = (RecyclerView) view;
adapter = new MyHospitalRecyclerViewAdapter(DummyContent.ITEMS, mListener);
recyclerView.setAdapter(adapter);
}
return view;
答案 0 :(得分:1)
在我的评论之后,这里是代码片段:
RecyclerView recyclerview = view.findViewById(R.id.list);
if (recyclerview != null) {
Context context = view.getContext();
adapter = new MyHospitalRecyclerViewAdapter(DummyContent.ITEMS, mListener);
recyclerview.setAdapter(adapter);
}
return view;