Question

我有一个带有GridLayoutManager的recyclerview，在项目中我使用ViewPager来显示照片，我在下面发生了崩溃：

02-28 14：58：56.618 30212-30212 / ofeksprojects.ofek.com.nightout E / AndroidRuntime：FATAL EXCEPTION：main 处理：ofeksprojects.ofek.com.nightout，PID：30212 java.lang.NullPointerException：尝试调用虚方法＆＃39; android.view.View android.widget.LinearLayout.getChildAt（int）＆＃39;在null对象引用上在eu.fiskur.simpleviewpager.SimpleViewPager.setIndicator（SimpleViewPager.java:217）在eu.fiskur.simpleviewpager.SimpleViewPager.onLayout（SimpleViewPager.java:243）在android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android.support.constraint.ConstraintLayout.onLayout（ConstraintLayout.java:1495）在android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android.widget.FrameLayout.layoutChildren（FrameLayout.java:336）在android.widget.FrameLayout.onLayout（FrameLayout.java:273）在android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android.support.v7.widget.RecyclerView $ LayoutManager.layoutDecoratedWithMargins（RecyclerView.java:8994）在android.support.v7.widget.GridLayoutManager.layoutChunk（GridLayoutManager.java:685）在android.support.v7.widget.LinearLayoutManager.fill（LinearLayoutManager.java:1518）在android.support.v7.widget.LinearLayoutManager.onLayoutChildren（LinearLayoutManager.java:585）在android.support.v7.widget.GridLayoutManager.onLayoutChildren（GridLayoutManager.java:170）在android.support.v7.widget.RecyclerView.dispatchLayoutStep2（RecyclerView.java:3719）在android.support.v7.widget.RecyclerView.dispatchLayout（RecyclerView.java:3436）在android.support.v7.widget.RecyclerView.onLayout（RecyclerView.java:3988）在android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android.widget.RelativeLayout.onLayout（RelativeLayout.java:1079）在android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android.widget.FrameLayout.layoutChildren（FrameLayout.java:336）在android.widget.FrameLayout.onLayout（FrameLayout.java:273）在android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android.widget.RelativeLayout.onLayout（RelativeLayout.java:1079）在android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android.support.design.widget.HeaderScrollingViewBehavior.layoutChild（HeaderScrollingViewBehavior.java:132）在android.support.design.widget.ViewOffsetBehavior.onLayoutChild（ViewOffsetBehavior.java:42）在android.support.design.widget.AppBarLayout $ ScrollingViewBehavior.onLayoutChild（AppBarLayout.java:1361）在android.support.design.widget.CoordinatorLayout.onLayout（CoordinatorLayout.java:874）在android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android.support.v4.widget.DrawerLayout.onLayout（DrawerLayout.java:1172）在android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android.widget.FrameLayout.layoutChildren（FrameLayout.java:336）在android.widget.FrameLayout.onLayout（FrameLayout.java:273）在android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android.widget.LinearLayout.setChildFrame（LinearLayout.java:1743）在android.widget.LinearLayout.layoutVertical（LinearLayout.java:1586）在android.widget.LinearLayout.onLayout（LinearLayout.java:1495）在android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android.widget.FrameLayout.layoutChildren（FrameLayout.java:336）在android.widget.FrameLayout.onLayout（FrameLayout.java:273）在android.view.View.layout（View.java:16694）在android.view.ViewGroup.layout（ViewGroup.java:5481）在android.widget.LinearLayout.setChildFrame（LinearLayout.java:1743）在android.widget.LinearLayout.layoutVertical（LinearLayout.java:1586）在android.widget.LinearLayout.onLayout（LinearLayout.java:1495）在android.view.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的问题，因为recyclerview和viewpager都是水平滚动但我无法找到解决方案。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);

水平ViewPager内部水平RecyclerView

0 个答案: