OnItemClick丢失字符串的值

Question

大家好。

不幸的是，我对Java没有太多经验，我遇到了一个可能非常基本的问题。我正在填写列表视图，当我单击一个列表项之一时，我想将字符串发送到另一个意图。但是字符串的值始终与它正确显示在列表视图中。我想这与每次出现新项目时都会被覆盖的字符串有关。

我希望零件[3]被发送到OnItemClick中的另一个功能，我该如何完成？

这是代码

@Override
    public View getView(int position, View convertView, ViewGroup parent) {
        try {
            ViewHolder holder;
            final String uuidbeacon;
            final String pid;
            uuidbeacon = arrayL.get(position).getProximityUuid().toString();
            minorbeacon = arrayL.get(position).getMinor();
            rangebeacon = arrayL.get(position).getAccuracy();
            parts = fetchTums(uuidbeacon).split("::");
            if (convertView != null) {
                holder = (ViewHolder) convertView.getTag();
            }
            else{
                if(parts[0].equals("1")) {
                    holder = new ViewHolder(convertView = inflater.inflate(R.layout.tupple_monitoring, null));
                    holder.beacon_image.setImageDrawable(getTumImage("http://127.0.0.1/uploads/face/" + parts[4]));
                    holder.beacon_uuid.setText(parts[1]);
                    holder.beacon_txpower.setText(parts[3]);
                    if(parts[2].equals("1"))
                    {
                        holder.beacon_row.setBackgroundColor(Color.parseColor("#B6B6B6"));
                        holder.image_lock.setVisibility(View.VISIBLE);
                    }
                }
                if(parts[0].equals("0"))
                {
                    holder = new ViewHolder(convertView = inflater.inflate(R.layout.tupple_monitoringe, null));
                }
            }
            pid = parts[3];
            if (arrayL.get(position).getProximityUuid() != null)

            list.setOnItemClickListener(new AdapterView.OnItemClickListener()
            {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id )
                {
                    //list.setItemChecked(position, true);
                    //view.setBackgroundColor(Color.BLUE);
                    toastThis(pid);
                   if(parts[2].equals("1")){
                       pin(pid);
                   }
                   else{
                        if(pid != null){
                            openPage(parts[3], "", parts[1]);
                        }
                   }
                }
            });
        } catch (Exception e) {
            e.printStackTrace();
        }

        return convertView;
    }

Answer 1

您必须使用从onItemClick接收到的position选择该值才能单击确切的项目。在您的情况下，您必须在arrayL中以索引（位置）获得值。

String item = arrayL[position];

Answer 2

我会尝试在适配器外实现点击侦听器。例如，在片段内。

类似的东西：

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    YourAdapter adapter = new YourAdapter(getActivity(), mItems);
    ListView list       = (ListView) view.findViewById(R.id.your_list_id);
    list.setAdapter(adapter);
    list.setOnItemClickListener(onItemClicked());
}

private AdapterView.OnItemClickListener onItemClicked() {
    return new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int i, long l) {
            YourItem item = (YourItem) parent.getItemAtPosition(i);
            // your magic happens here
        }
    };
}