Question

我有一个BaseAdapter如下：

public class OrderAdapter extends BaseAdapter {
private final Context mContext;
private Handler mHandler;
private List<Order> mOrders = Collections.emptyList();
private Message msg;
private int counter;

public OrderAdapter(Context context, List<Order> objects) {
    ThreadPreconditions.checkOnMainThread();
    this.mContext = context;
    this.mOrders = objects;
    notifyDataSetChanged();
}
public OrderAdapter(Context context, List<Order> objects, Handler handler) {
    ThreadPreconditions.checkOnMainThread();
    this.mContext = context;
    this.mOrders = objects;
    this.mHandler = handler;
    notifyDataSetChanged();
}

public void updateOrders(List<Order> bananaPhones) {
    ThreadPreconditions.checkOnMainThread();
    this.mOrders = bananaPhones;
    notifyDataSetChanged();
}

@Override
public int getCount() {
    return mOrders.size();
}

@Override
public Order getItem(int position) {
    return mOrders.get(position);
}

// getItemId() is often useless, I think this should be the default
// implementation in BaseAdapter
@Override
public long getItemId(int position) {
    return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent){
    msg = Message.obtain();
    if (convertView == null){
        convertView = LayoutInflater.from(mContext).inflate(R.layout.order_row_item, parent, false);
    }
    msg.what = position;
    msg.obj = convertView;
    mHandler.sendMessage(msg);
    return convertView;
}


}

在我的活动中，我有一个处理程序，它异步地接收和更改行的值。问题是：＆＃34;位置＆＃34;由getView检索不正确，它实际上从0-4开始随机出现。在调试会话中，我发现适配器具有正确的项目，它只是使视图错误。我的listView不在scrollView上，它的高度是fill_parent，并且适配器上没有asyncTask，所以即使创建新的thead也是由活动完成的（我认为这是重置数字，但那是不是这样的。）

现在已经坚持了2天，任何帮助都会非常感激。

Answer 1

在getView（）

中使用View Holder

请参阅此链接https://www.caveofprogramming.com/guest-posts/custom-listview-with-imageview-and-textview-in-android.html

getView位置未正确检索

1 个答案: