RecyclerView不滚动

我已经筋疲力尽了4天让我的listview滚动但我不能然后有人建议使用RecyclerView,因为我使用的是CoordinatorLayout所以我做了。 现在了解并实施RecyclerView后仍然存在相同的错误。 它现在不滚动我应该做什么??? 我想放弃。 我无处可去。

@Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_contacts_list, container, false); DataBaseOperations hell = new DataBaseOperations(getActivity()); SQLiteDatabase db = hell.getReadableDatabase(); String[] columns = {mDatabase.Tableinfo.ID,mDatabase.Tableinfo.Contacts_phone,mDatabase.Tableinfo.Contacts_name,mDatabase.Tableinfo.Contact_pic}; Cursor Contacts = db.query(mDatabase.Tableinfo.contacts, columns, null, null, null, null, null); Toast.makeText(getContext(),"come on"+Contacts.getCount(),Toast.LENGTH_SHORT).show(); RecyclerView contacts = (RecyclerView) view.findViewById(R.id.contacts); contacts.hasFixedSize(); RecyclerView.LayoutManager llv = new LinearLayoutManager(getContext(),LinearLayoutManager.VERTICAL,false); contacts.setLayoutManager(llv); Context t = getContext(); MyContactsRecyclerViewAdapter lv = new MyContactsRecyclerViewAdapter(Contacts,t); contacts.setAdapter(lv); return view; } 

这里是我的list.xml的xml,它是在寻呼机,如果我也发布代码????

  

任何帮助,将不胜感激。 这是我的MainActivty的xml。

          

这是我的RecyclerAdapter。

 public class MyContactsRecyclerViewAdapter extends RecyclerView.Adapter { private Cursor cursor; private Context mcontext; private View view; public MyContactsRecyclerViewAdapter(Cursor cur, Context con){ cursor = cur; mcontext = con; } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()) .inflate(R.layout.fragment_contacts, parent, false); return new ViewHolder(view); } @Override public void onBindViewHolder(final ViewHolder holder, int position) { cursor.moveToPosition(position); String nam = cursor.getString(cursor.getColumnIndex(mDatabase.Tableinfo.Contacts_name)); String phon = cursor.getString(cursor.getColumnIndex(mDatabase.Tableinfo.Contacts_phone)); byte[] b = cursor.getBlob(cursor.getColumnIndex(mDatabase.Tableinfo.Contact_pic)); holder.name.setText(nam); holder.phone.setText(phon); if (b==null) { Profile bla = new Profile(); holder.pic.setImageBitmap(bla.getRoundedShape(BitmapFactory.decodeResource(mcontext.getResources(), R.drawable.samplepro),60,60)); } else { holder.pic.setImageBitmap(BitmapFactory.decodeByteArray(b,0,b.length)); } } @Override public int getItemCount() { if(cursor != null){ return cursor.getCount();} return 0 ; } public class ViewHolder extends RecyclerView.ViewHolder { public final View mView; public TextView name; public TextView phone; public ImageView pic; public ViewHolder(View view) { super(view); mView = view; pic = (ImageView) view.findViewById(R.id.image); phone = (TextView) view.findViewById(R.id.phone); name = (TextView)view.findViewById(R.id.name); }}} 

就是这个。 我认为每件事都与之相关。 请找一个错误。记住ScrollBars出现并消失,但仍然没有滚动

好像你在使用ViewPager ViewPager 。(正如我在android studio预览中看到的那样)

像这样用它:

         

它现在应该工作。

在AppBarLayout外移动ViewPager解决了我的问题。