Question

iam试图将imageview手风琴的背景图像更改为发送消息的人如果是我，那么背景就是我的照片如果是其他背景将变为匿名问题是我的代码正常工作，但是有时它像我的意思是说发送消息的背景是绿色，接收到的是黄色有时发送的是黄色，接收的是绿色当我刷新布局时它完美地工作这是我的代码

首先是我的回收站视图

private void intitializingRecyclerView()
{

    mMessagesList.setLayoutManager(new LinearLayoutManager(this));
    Query mQuery = mMyMessagesRef;

    FirebaseRecyclerOptions mOptions = new FirebaseRecyclerOptions.Builder<Message>()
            .setQuery(mQuery,Message.class).build();


    mAdapter = new FirebaseRecyclerAdapter<Message, MessagesHolder>(mOptions) {
        @Override
        protected void onBindViewHolder(@NonNull MessagesHolder holder, int position, @NonNull Message model) {
            if (model.getFrom().equals(myId))
            {
                holder.fillSentMessage(Image,model.getMessages());
            } else if (!model.getFrom().equals(myId))
            {
                holder.fillReceivedMessage("",model.getMessages());
            }
            holder.showElements();
        }

        @NonNull
        @Override
        public MessagesHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {

             View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.rv_sent_message,parent,false);
            return new MessagesHolder(view,parent.getContext());
        }
    };
    mMessagesList.setAdapter(mAdapter);

}

然后我在sendButton中写的就是这个

mMessage.setText("");
mMessagesList.scrollToPosition(count - 1);
mAdapter.notifyDataSetChanged();

和我的HolderClass

public class MessagesHolder extends RecyclerView.ViewHolder {

    private CircleImageView mImage;
    private TextView mMessage;
    private ConstraintLayout mLayout;

    Context context;

    public MessagesHolder(@NonNull View itemView, Context context) {
        super(itemView);
        this.context = context;

        mImage = itemView.findViewById(R.id.iv_sent_message);
        mMessage = itemView.findViewById(R.id.tv_sent_message);
        mLayout = itemView.findViewById(R.id.cl_message_layout);

    }


    public void fillSentMessage(final String Image, String Message) {
        Picasso.get().load(Image).networkPolicy(NetworkPolicy.OFFLINE).into(mImage, new Callback() {
            @Override
            public void onSuccess() {

            }

            @Override
            public void onError(Exception e) {
                Picasso.get().load(Image).into(mImage);
            }
        });
        mMessage.setText(Message);
    }

    public void fillReceivedMessage(final String Image, String Message) {

        mLayout.setLayoutDirection(View.LAYOUT_DIRECTION_LTR);
        if (!Image.isEmpty()) {

            Picasso.get().load(Image).networkPolicy(NetworkPolicy.OFFLINE).into(mImage, new Callback() {
                @Override
                public void onSuccess() {

                }

                @Override
                public void onError(Exception e) {
                    Picasso.get().load(Image).into(mImage);
                }
            });
        } else
        {
            Picasso.get().load(R.drawable.anynomous).into(mImage);
        }
        mMessage.setTextColor(context.getResources().getColor(R.color.white));
        mMessage.setText(Message);
        mMessage.setBackgroundResource(R.drawable.recieved_message);

    }

    public void showElements()
    {
        mMessage.setVisibility(View.VISIBLE);
        mImage.setVisibility(View.VISIBLE);
        mLayout.setVisibility(View.VISIBLE);

    }

}

谢谢

Answer 1

感谢我通过添加另一个if语句来解决它，该语句检查代码是否等于我的朋友代码

 if (model.getFrom().equals(myId))
                {
                    holder.fillSentMessage(Image,model.getMessages());
                } else if (model.getFrom().equals(friendId))
                {
                    holder.fillReceivedMessage("",model.getMessages());
                }
                holder.showElements();}

更改recyclerview（firebase）中已接收和已发送消息的背景

1 个答案: