如何在onBindviewholder中获取Layoutmanager状态，以便基于layoutmanager更新我的字段

Question

public boolean onOptionsItemSelected(MenuItem item) {
    int id=item.getItemId();
    switch (id){
        case R.id.item_grid:
            layoutManager=new GridLayoutManager(this,2);
            recyclerView.setLayoutManager(layoutManager);break;
        case R.id.item_staggered_grid:
            layoutManager=new StaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL);
            recyclerView.setLayoutManager(layoutManager);
            break;
        case R.id.item_horizontal:

            layoutManager=new LinearLayoutManager(this,LinearLayoutManager.HORIZONTAL,false);
            recyclerView.setLayoutManager(layoutManager);
            break;
        case R.id.item_vertical:
            layoutManager=new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,true);
            recyclerView.setLayoutManager(layoutManager);
            break;
    }
    return true;
}

the above code is in mainactivity, so in my Adapter how should i get the layoutmanager state so as to update my fields such as adjusting textsize to fit when using gridlayoutmanager and increasing the text size when using linear layoutmanager.

public class NflAdapter extends RecyclerView.Adapter<NflAdapter.ViewHolder> {

private List<Nfl> teams;
private Context context;
private Resources rsc;



static SQLiteDatabase db;
CupboardNFLSQLiteOpenHelper dbhelper;

@Override
public NflAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v= LayoutInflater.from(parent.getContext()).inflate(R.layout.cardviewitem,parent,false);
    return new ViewHolder(v);

}
public NflAdapter(List<Nfl> teams) {
    //this.context= context;
    this.teams = teams;
}

public NflAdapter(Context context,Resources rsc,List<Nfl> teams) {
   this.context=context;
    this.rsc=rsc;
    this.teams = teams;

}

@Override
public void onBindViewHolder(NflAdapter.ViewHolder holder, final int position) {



    final Nfl obj=teams.get(position);
    holder.teamname.setText(obj.getTeamName());
    holder.teamid.setText("# "+position);
  //holder.teamimage.setImageResource(obj.getImage_id());

   holder.teamimage.setImageBitmap(ImageGenie.decodeSampledBitmapFromResource(rsc, obj.getImage_id(),300,300));
    holder.removeteam_button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Log.d("hello","clicked button and position is:"+position);
            teams.remove(position);
            dbhelper = new CupboardNFLSQLiteOpenHelper(context);
            db = dbhelper.getWritableDatabase();
            cupboard().withDatabase(db).delete(obj);
            notifyDataSetChanged();



        }
    });




}

@Override
public int getItemCount() {
    return teams.size();
}

public static class ViewHolder extends RecyclerView.ViewHolder{
    TextView teamname,teamid;
    ImageView teamimage;
    Button removeteam_button;

    public ViewHolder(View itemView) {
        super(itemView);
        teamname=(TextView)itemView.findViewById(R.id.teamname_tv);
        teamid=(TextView)itemView.findViewById(R.id.teamid_tv);
        teamimage=(ImageView)itemView.findViewById(R.id.team_iv);
        removeteam_button=(Button)itemView.findViewById(R.id.remove_bt);

    }
}

}

Grid layoutmanager image

linearlayoutmanager image

I want to use if else in onbindviewholder and set field properties based on layoutmanager, is it possible.

Answer 1

public boolean onOptionsItemSelected(MenuItem item) {
    int id=item.getItemId();
    switch (id){
        case R.id.item_grid:

            youradpater.updateType("Grid");
            recyclerView.setLayoutManager(null);
            recyclerView.setLayoutManager(new GridLayoutManager(this,2));
            recyclerView.setAdapter(null);
            recyclerView.setAdapter(youradpater);


        case R.id.item_staggered_grid:


            youradpater.updateType("Stagggered");
            recyclerView.setLayoutManager(null);
            recyclerView.setLayoutManager(new StaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL));
            recyclerView.setAdapter(null);
            recyclerView.setAdapter(youradpater);


            break;
        case R.id.item_horizontal:
            youradpater.updateType("Horizontal");
            layoutManager=new LinearLayoutManager(this,LinearLayoutManager.HORIZONTAL,false);

            recyclerView.setLayoutManager(null);
            recyclerView.setLayoutManager(layoutManager);
            recyclerView.setAdapter(null);
            recyclerView.setAdapter(youradpater);
            break;
        case R.id.item_vertical:

            youradpater.updateType("vertical");
            layoutManager=new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,true);
            recyclerView.setLayoutManager(null);
            recyclerView.setLayoutManager(layoutManager);
            recyclerView.setAdapter(null);
            recyclerView.setAdapter(youradpater);
            break;
    }
    return true;
}




public class NflAdapter extends RecyclerView.Adapter<NflAdapter.ViewHolder> {

private List<Nfl> teams;
private Context context;
private Resources rsc;



static SQLiteDatabase db;
CupboardNFLSQLiteOpenHelper dbhelper;


String layouttype="vertical";

@Override
public NflAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v= LayoutInflater.from(parent.getContext()).inflate(R.layout.cardviewitem,parent,false);
    return new ViewHolder(v);

}
public NflAdapter(List<Nfl> teams) {
    //this.context= context;
    this.teams = teams;
}

public NflAdapter(Context context,Resources rsc,List<Nfl> teams) {
   this.context=context;
    this.rsc=rsc;
    this.teams = teams;

}

@Override
public void onBindViewHolder(NflAdapter.ViewHolder holder, final int position) {

    //conditions can be put here


    if(layouttype.equals("Vertical")){


    }else if(layouttype.equals("Horizontal")){



    }

    // and so on




    final Nfl obj=teams.get(position);
    holder.teamname.setText(obj.getTeamName());
    holder.teamid.setText("# "+position);
  //holder.teamimage.setImageResource(obj.getImage_id());

   holder.teamimage.setImageBitmap(ImageGenie.decodeSampledBitmapFromResource(rsc, obj.getImage_id(),300,300));
    holder.removeteam_button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Log.d("hello","clicked button and position is:"+position);
            teams.remove(position);
            dbhelper = new CupboardNFLSQLiteOpenHelper(context);
            db = dbhelper.getWritableDatabase();
            cupboard().withDatabase(db).delete(obj);
            notifyDataSetChanged();



        }
    });




}

@Override
public int getItemCount() {
    return teams.size();
}

public static class ViewHolder extends RecyclerView.ViewHolder{


    TextView teamname,teamid;
    ImageView teamimage;
    Button removeteam_button;

    public ViewHolder(View itemView) {
        super(itemView);
        teamname=(TextView)itemView.findViewById(R.id.teamname_tv);
        teamid=(TextView)itemView.findViewById(R.id.teamid_tv);
        teamimage=(ImageView)itemView.findViewById(R.id.team_iv);
        removeteam_button=(Button)itemView.findViewById(R.id.remove_bt);

    }
}

void updateType(Sting layouttype){

    this.layouttype=layouttype;

}

}