我有一个带有GridLayoutManager的recyclerview，在项目中我正在使用ViewPager来显示照片，我得到了下面的崩溃：

02-28 14：58：56.618 30212-30212 / ofeksprojects.ofek.com.nightout E / AndroidRuntime：FATAL EXCEPTION：main进程：ofeksprojects.ofek.com.nightout，PID：30212 java.lang.NullPointerException：尝试调用在eu.fiskur.simpleviewpager.SimpleViewPager上的eu.fiskur.simpleviewpager.SimpleViewPager.setIndicator（SimpleViewPager.java:217）上的空对象引用上的虚方法'android.view.View android.widget.LinearLayout.getChildAt（int）' . onLayout（SimpleViewPager.java:243）在android.view.View.layout（View.java:16694）的android.view.ViewGroup.layout（ViewGroup.java:5481）android.support.constraint.ConstraintLayout.onLayout（ConstraintLayout） .java：1495）在Android.widget.FrameLayout.layoutChildren（FrameLayout.java:336）的android.view.ViewGroup.layout（ViewGroup.java:5481）的android.view.View.layout（View.java:16694）在android.widget.FrameLayout.onLayout（FrameLayout.java:273）的android.view.View.layout（View.java:16694）android.view.ViewGroup.layout（ViewGroup.java:5481）在android.su在android.support.v7.widget.LinearLayoutManager.fill的android.support.v7.widget.GridLayoutManager.layoutChunk（GridLayoutManager.java:685）上的pport.v7.widget.RecyclerView $ LayoutManager.layoutDecoratedWithMargins（RecyclerView.java:8994） LinearLayoutManager.java:1518）在android.support.v7.widget.LinearLayoutManager.onLayoutChildren（LinearLayoutManager.java:585）的android.support.v7.widget.GridLayoutManager.onLayoutChildren（GridLayoutManager.java:170）android.support.v7 .widget.RecyclerView.dispatchLayoutStep2（RecyclerView.java:3719）在android.support.v7.widget.RecyclerView.dispatchLayout（RecyclerView.java:3436）android.support.v7.widget.RecyclerView.onLayout（RecyclerView.java:3988） ）在android.view.View.layout（View.java:16694）的android.view.ViewGroup.layout（ViewGroup.java:5481）android.widget.RelativeLayout.onLayout（RelativeLayout.java:1079）android.view .view.layout（View.java:16694）位于android.widget.FrameLayout.layoutCh的android.view.ViewGroup.layout（ViewGroup.java:5481） ildren（FrameLayout.java:336）位于android.view.View.Loutout（ViewLayout.java:273）的android.view.View.layout（View.java:16694）android.view.ViewGroup.layout（ViewGroup.java） ：5481）在android.view.Layout.onLayout（RelativeLayout.java：1079）的android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android位于android.support.design.widget.ViewOffsetBehavior.onLayoutChild（ViewOffsetBehavior.java:42）的.support.design.widget.HeaderScrollingViewBehavior.layoutChild（HeaderScrollingViewBehavior.java:132），位于android.support.design.widget.AppBarLayout $ ScrollingViewBehavior.onLayoutChild （AppBarLayout.java:1361）在android.view.View.Viewout.Lout的android.view.View.Viewout（View.java:16694）的android.support.design.widget.CoordinatorLayout.onLayout（CoordinatorLayout.java:874）处 . ViewGroup.java:5481）在Android.view.View的android.view.Viewout（View.java:16694）的android.support.v4.widget.DrawerLayout.onLayout（DrawerLayout.java:1172）处 . Android.widget.FoutLayout.onLayout（FrameLayout.java:273）在android.view.View.layout（View.java）的android.widget.FrameLayout.layoutChildren（FrameLayout.java:336）上的布局（ViewGroup.java:5481） ：16694）在android.widget.Linout.setChildFrame上的android.view.ViewGroup.layout（ViewGroup.java:5481）android.widget.LinearLayout.layoutVertical（LinearLayout.java:1586） .widget.LinearLayout.onLayout（LinearLayout.java:1495）位于android.view.View.Loutout（View.java:16694），位于android.view.jout上的android.view.ViewGroup.layout（ViewGroup.java:5481） . layoutChildren（FrameLayout.java:336）位于android.view.View.Loutout（ViewLayout.java:273）的android.view.View.layout（View.java:16694）android.view.ViewGroup.layout（ViewGroup.java） ：5481）在android.widget.LinearLayout.setChildFrame（LinearLayout.java:1743）的android.widget.LinearLayout.layoutVertical（LinearLayout.java:1586）在android.widget.LinearLayout.onLayout（LinearLayout.java:1495）在android .vi的ew.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）

我记得我读过它是一个已知问题，因为recyclerview和viewpager都是水平滚动但我找不到解决方案 . 谁可以对它有所了解？

这是代码 -

ublic class PlacesSearchAdapter extends BaseQuickAdapter<Place,PlacesSearchAdapter.PlaceViewHolder> {

private static String PLACE_PHOTOS_BASE_URL = "https://maps.googleapis.com/maps/api/place/photo?";
public PlacesSearchAdapter(@Nullable List<Place> data) {
    super(R.layout.place_item_base_layout,data);
}

@Override
protected void convert(PlaceViewHolder helper, Place item) {
    helper.nameTV.setText(item.getName());
    helper.addressTV.setText(item.getTextualAddress());
    loadThumbs(helper,item);
}

private void loadThumbs(PlaceViewHolder helper, Place item) {
    ArrayList<String> photosUrl = new ArrayList<>();
    for (Place.PlacePhoto photo:item.getPhotos()) {
        StringBuilder builder = new StringBuilder(PLACE_PHOTOS_BASE_URL);
        builder.append("maxwidth="+photo.getWidth());
        builder.append("&");
        builder.append("maxheight="+photo.getHeight());
        builder.append("&");
        builder.append("photoreference="+photo.getReference());

        photosUrl.add(builder.toString());
    }
    String[] photosArr = photosUrl.toArray(new String[photosUrl.size()]);
    helper.photosPager.setImageUrls(photosArr, new ImageURLLoader() {
        @Override
        public void loadImage(ImageView imageView, String url) {
            Picasso.with(imageView.getContext()).load(url).fit().into(imageView);
        }
    });
}

public class PlaceViewHolder extends BaseViewHolder {
    SimpleViewPager photosPager;
    TextView nameTV,addressTV;
    MaterialFavoriteButton favoriteButton;
    public PlaceViewHolder(View view) {
        super(view);
        nameTV = view.findViewById(R.id.nameTV_placeAdapter);
        addressTV = view.findViewById(R.id.addressTV_placeAdapter);
        photosPager = view.findViewById(R.id.placeThumb_placeAdapter);
        int indicatorColor = Color.parseColor("#ffffff");
        int selectedIndicatorColor = Color.parseColor("#fff000");
        photosPager.showIndicator(indicatorColor, selectedIndicatorColor);

        favoriteButton = view.findViewById(R.id.favoriteButton_placeAdapter);

    }
}

}

和我的onViewCreated（） -

public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    final CardView searchCard = view.findViewById(R.id.searchCard_searchFrag);
    placesRV = view.findViewById(R.id.resultList_searchFrag);
    placesRV.setLayoutManager(new GridLayoutManager(placesRV.getContext(),1,GridLayoutManager.HORIZONTAL,false));
    assert getActivity()!=null;
    placesRV.setNestedScrollingEnabled(true);
    placesRV.getLayoutManager().setAutoMeasureEnabled(true);
android android-recyclerview android-viewpager gridlayoutmanager