我想在数据库中获得关键位置。
得到错误：getRef(position) : Cannot resolve method 'getRef(int)'
final String post_key = getRef(position).getKey();
这是我的代码CustomPostAdapter
public class CustomPostAdapter extends RecyclerView.Adapter<CustomPostAdapter.ViewHolder>{
public List<Spacecraft> userList ;
public Context context ;
private boolean mProcessLike = false ;
private DatabaseReference mDatabaseLike ;
// public ImageView imagePostt ;
public CustomPostAdapter(Context context , List<Spacecraft> userList){
this.userList = userList ;
this.context = context;
}
@NonNull
@Override
public CustomPostAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_posts_item, parent,false);
return new CustomPostAdapter.ViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull final ViewHolder holder, int position) {
mDatabaseLike = FirebaseDatabase.getInstance().getReference().child("Likes");
mDatabaseLike.keepSynced(true);
final String post_key = getRef(position).getKey();
final String name = userList.get(position).getName();
final String image_post = userList.get(position).getImage_post();
final String descrip = userList.get(position).getDescrip();
final String hachatg = userList.get(position).getHachtag();
final String user = userList.get(position).getUser();
final String time = userList.get(position).getTime();
//Text Post
holder.nameText.setText(name);
holder.descripText.setText(descrip);
holder.hachtagText.setText(" " + hachatg);
holder.timeText.setText(" " + time);
//Imgae Post if null set Visibtly Gone to ImageView
if (TextUtils.isEmpty(image_post)){
holder.imagePostt.setVisibility(View.GONE);
}else {
//Image Post
Picasso.with(context).load(image_post).into(holder.imagePostt , new Callback() {
@Override
public void onSuccess() {
holder.imagePostt.setVisibility(View.VISIBLE);
}
@Override
public void onError() {
holder.imagePostt.setVisibility(View.GONE);
}
});
}
//Onclick items
holder.mView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(context , ContentActivity.class);
intent.putExtra("NAME_KEY", name);
intent.putExtra("HACHTAG_KEY", hachatg);
intent.putExtra("DESCRIP_KEY", descrip);
intent.putExtra("USER_KEY", user);
intent.putExtra("IMAGE_POST", image_post);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
});
//Button Like Onclice
holder.mLikeBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mProcessLike = true;
if (mProcessLike){
mDatabaseLike.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
//Chek if user already Like or not
if (dataSnapshot.child(post_key).hasChild(user)){
}else {
mDatabaseLike.child(post_key).child(user).setValue("RandomValue");
mProcessLike = false;
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
}
});
}
@Override
public int getItemCount() {
return userList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
View mView;
public TextView nameText , hachtagText , descripText, urlText , timeText;
public ImageView imagePostt ;
public ImageButton mLikeBtn ;
public ViewHolder(View itemView) {
super(itemView);
mView = itemView;
nameText = (TextView)mView.findViewById(R.id.text_nameProblem);
hachtagText = (TextView)mView.findViewById(R.id.text_nameUser);
// urlText = (TextView)mView.findViewById(R.id.textUrl);
descripText = (TextView)mView.findViewById(R.id.text_Discription);
timeText = (TextView)mView.findViewById(R.id.timeText);
imagePostt = (ImageView)mView.findViewById(R.id.imagePost);
mLikeBtn = (ImageButton)mView.findViewById(R.id.btnLike);
}
}
}