为list-view Android设置适配器时出错

Question

我在listview中为Android设置适配器时遇到了一个奇怪的错误。我正在开发一个聊天应用程序，当我发送它出现在列表视图中的任何消息时，但是当我尝试接收消息时，它会带我到Catch-block类FutureTask

我正在使用adapter.notifyDataSetChanged();让我的适配器知道我在适配器中创建的任何更改。

我的代码如下

private void addNewMessage(MessageItems m) {

    if(MainActivity.mymessage)
    {
    messages.add(m);
    }else if(MainActivity.mymessage == false)
    {
        messages.add(m);
    }
    adapter.notifyDataSetChanged();
    getListView().setSelection(messages.size()-1);

}

**Code of Adapter**

public class AwesomeAdapter extends BaseAdapter{
    private Context mContext;
    private ArrayList<MessageItems> mMessages;



    public AwesomeAdapter(Context context, ArrayList<MessageItems> messages) {
        super();
        this.mContext = context;
        this.mMessages = messages;
    }
    @Override
    public int getCount() {
        return mMessages.size();
    }
    @Override
    public Object getItem(int position) {       
        return mMessages.get(position);
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        MessageItems message = (MessageItems) this.getItem(position);

        ViewHolder holder; 
        if(convertView == null)
        {
            holder = new ViewHolder();
            convertView = LayoutInflater.from(mContext).inflate(R.layout.sms_row, parent, false);
            holder.message = (TextView) convertView.findViewById(R.id.message_text);
            convertView.setTag(holder);
        }
        else
            holder = (ViewHolder) convertView.getTag();

        holder.message.setText(message.getMessage());

        LayoutParams lp = (LayoutParams) holder.message.getLayoutParams();
        //check if it is a status message then remove background, and change text color.
        if(message.isStatusMessage())
        {
            holder.message.setBackgroundDrawable(null);
            lp.gravity = Gravity.LEFT;
            holder.message.getResources().getColor(R.color.textFieldColor);
            //holder.message.setTextColor(R.color.textFieldColor);
        }
        else
        {       
            //Check whether message is mine to show green background and align to right
            if(message.isMine())
            {
                holder.message.setBackgroundResource(R.drawable.speech_bubble_green);
                lp.gravity = Gravity.RIGHT;
            }
            //If not mine then it is from sender to show orange background and align to left
            else
            {
                holder.message.setBackgroundResource(R.drawable.speech_bubble_orange);
                lp.gravity = Gravity.LEFT;
            }
            holder.message.setLayoutParams(lp);
            holder.message.getResources().getColor(R.color.textFieldColor);
            //holder.message.setTextColor(R.color.textColor);   
        }
        return convertView;
    }
    private static class ViewHolder
    {
        TextView message;
    }

    @Override
    public long getItemId(int position) {
        //Unimplemented, because we aren't using Sqlite.
        return position;
    }

在FutureTask类中，当我尝试设置adapter.notifyDataSetChanged（）;

时，它会将我带到以下try-catch块

public void run() {
    if (state != NEW ||
        !UNSAFE.compareAndSwapObject(this, runnerOffset,
                                     null, Thread.currentThread()))
        return;
    try {
        Callable<V> c = callable;
        if (c != null && state == NEW) {
            V result;
            boolean ran;
            try {
                result = c.call();
                ran = true;
            } catch (Throwable ex) {
                result = null;
                ran = false;
                setException(ex);
            }
            if (ran)
                set(result);
        }
    } finally {
        // runner must be non-null until state is settled to
        // prevent concurrent calls to run()
        runner = null;
        // state must be re-read after nulling runner to prevent
        // leaked interrupts
        int s = state;
        if (s >= INTERRUPTING)
            handlePossibleCancellationInterrupt(s);
    }
}

我知道某个地方的问题在于为listview设置适配器，我需要在收到新消息时更新它，但我无法修复它。感谢您的帮助