Реализация отправки фото в чате wifi-direct

public class ChatAdapter extends BaseAdapter{ 
    public static Bitmap bitmap; 
    private HashMap<String,Bitmap> mapThumb; 
  
    private Context mContext; 
    private ArrayList<ChatMessage> mMessages; 
    private HashMap<String, Integer> mColorsForUsers; 
    private int[] mColors = null; 
    private final int NUM_OF_COLORS = 16; 
  
  
    public ChatAdapter(Context context, ArrayList<ChatMessage> messages) { 
  
        super(); 
        this.mContext = context; 
        this.mMessages = messages; 
        this.mColorsForUsers = new HashMap<String, Integer>(); 
        mapThumb = new HashMap<String, Bitmap>(); 
  
  
  
        mColors = new int[NUM_OF_COLORS]; 
        int i=0; 
        mColors[i++]=R.color.AntiqueWhite; 
        mColors[i++]=R.color.Cyan; 
        mColors[i++]=R.color.DarkGray; 
        mColors[i++]=R.color.Blue; 
        mColors[i++]=R.color.Yellow; 
        mColors[i++]=R.color.Azure; 
        mColors[i++]=R.color.Lavender; 
        mColors[i++]=R.color.Magenta; 
        mColors[i++]=R.color.Gold; 
        mColors[i++]=R.color.Black; 
        mColors[i++]=R.color.Green; 
        mColors[i++]=R.color.Gray; 
        mColors[i++]=R.color.BlanchedAlmond; 
        mColors[i++]=R.color.MediumTurquoise; 
        mColors[i++]=R.color.PaleGoldenrod; 
        mColors[i++]=R.color.Silver; 
    } 
  
  
  
    @Override 
    public int getCount() {return mMessages.size();} 
  
    @Override 
    public Object getItem(int position) {return mMessages.get(position);} 
     
  
     
  
    @SuppressLint("ResourceAsColor") 
    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
  
        View view = convertView; 
  
         
        ChatMessage message = (ChatMessage) this.getItem(position); 
        int msgColor; 
  
        ViewHolder holder; 
        if(convertView == null) 
        { 
            holder = new ViewHolder(); 
  
            holder.image = (ImageView) view.findViewById(R.id.image); 
  
  
            convertView = LayoutInflater.from(mContext).inflate(R.layout.chat_activity_list_item, parent, false); //get the xml layout 
            holder.mMessage = (TextView) convertView.findViewById(R.id.message_text); 
            holder.mTimeAndUserName =(TextView) convertView.findViewById(R.id.message_time_and_userName); 
  
            convertView.setTag(holder); 
        } 
        else 
            holder = (ViewHolder) convertView.getTag(); 
  
        holder.mMessage.setText(message.getMessage()); 
        holder.mTimeAndUserName.setText("   "+message.getTime()+"  "+message.getUserName()+"   "); 
  
        holder.mTimeAndUserName.setTextColor(R.color.textFieldColor); 
        holder.mTimeAndUserName.setTextSize(14); 
  
        LayoutParams lp = (LayoutParams) holder.mMessage.getLayoutParams(); 
        LayoutParams lp2 = (LayoutParams) holder.mTimeAndUserName.getLayoutParams(); 
  
        if(message.isMine()) 
        { 
            holder.mMessage.setBackgroundResource(R.drawable.speech_bubble_green); 
            lp.gravity = Gravity.RIGHT; 
            lp2.gravity = Gravity.RIGHT; 
            holder.mMessage.setTextColor(mContext.getResources().getColor(R.color.Black)); 
        } 
  
        else 
        { 
            holder.mMessage.setBackgroundResource(R.drawable.speech_bubble_orange); 
  
            msgColor = getColorForUser(message.mUserUnique); 
  
            holder.mMessage.setTextColor(mContext.getResources().getColor(msgColor)); 
  
            lp.gravity = Gravity.LEFT; 
            lp2.gravity = Gravity.LEFT; 
  
        } 
        holder.mMessage.setLayoutParams(lp); 
  
  
        holder.mTimeAndUserName.setLayoutParams(lp2); 
  
        return convertView; 
    }