我想在我的应用程序上显示一张带有图片的幻灯片，我实现了一个水平的 RecyclerView。
左侧的屏幕是右侧同一屏幕的运行时屏幕截图，显示在 Layout Inspector 中，在我将照片添加到 recyclerview 之后
RecyclerView 的原始位置在 CardView 内，我将其移出，因为它也没有显示在那里。关于为什么的任何想法？
一些代码：
活动.xml
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".TheActivity">
<fragment
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="TheFragment"
android:tag="@string/the_tag"
tools:layout="@layout/the_layout"
android:id="@+id/the_id"/>
</FrameLayout>
片段.xml
<layout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:bind="http://schemas.android.com/apk/res-auto"
tools:context="TheActivity" >
<data>
<!-- Some vars -->
</data>
<LinearLayout android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ScrollView android:visibility="visible"
android:id="@+id/frag_add_property_container"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:orientation="vertical"
android:focusableInTouchMode="true"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.RecyclerView android:id="@+id/the_rv"
android:layout_width="match_parent"
android:layout_height="150dp"
app:layoutManager="android.support.v7.widget.LinearLayoutManager"
android:orientation="horizontal"
android:layout_marginBottom="@dimen/activity_half_vertical_margin"/>
</LinearLayout>
</ScrollView>
</LinearLayout>
public class TheFragment extends BaseFragment implements TheView {
private PictureFilesAdapter adapter;
@BindView(R.id.rv_add_property_pics)
RecyclerView imageRv;
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
bind = DataBindingUtil.inflate(inflater, getLayout(), container, false);
unbinder = ButterKnife.bind(this, bind.getRoot());
Drawable dividerDrawable = ContextCompat.getDrawable(getActivity(), R.drawable.rv_item_hor_divider);
imageRv.addItemDecoration(new CustomItemDecoration(dividerDrawable));
return bind.getRoot();
}
class PictureFilesAdapter extends RecyclerView.Adapter<PropertyPicturesViewHolder> {
Context context;
public ArrayList<File> files;
public ArrayList<File> getFiles() {
return files;
}
AddPropertyView view;
PictureFilesAdapter(AddPropertyView view, Context context) {
this.context = context;
this.files = new ArrayList<>();
this.view = view;
}
@Override
public PropertyPicturesViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(context);
View v = inflater.inflate(R.layout.item_rv_add_property, parent, false);
return new AddPropertyFragment.PropertyPicturesViewHolder(v);
}
@Override
public void onBindViewHolder(PropertyPicturesViewHolder holder, int position) {
holder.textView.setText(files.get(position).getAbsolutePath());
Picasso.with(context)
.load(files.get(position))
.into(holder.imageView);
}
@Override
public int getItemCount() {
return files.size();
}
void addFile(File file) {
this.files.add(file);
notifyDataSetChanged();
}
}
class PropertyPicturesViewHolder extends RecyclerView.ViewHolder {
private Uri uri;
@BindView(R.id.item_rv_add_prop_image) ImageView imageView;
@BindView(R.id.item_rv_add_prop_image_src) TextView textView;
PropertyPicturesViewHolder(View view) {
super(view);
ButterKnife.bind(this, view);
view.setOnClickListener((v) -> {
// some logic
});
}
}
}