Question

嘿，我使用gridView来显示我的项目。一切都还可以，但在六件物品或滚动后，一些物品会被重复。

所以我觉得如果convertItem不为null，我还有事可做。但我如何加载下一个项目

一些简短的代码：

 public CustomGridAdapter(Context context, ArrayList<Event> finalResult, double latitude, double longitude) {

    this.posLatitude = latitude;
    this.posLongitude = longitude;

    this.context = context;
    this.gridValues = finalResult;
    this.app = new Application(context);
}


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

@Override
public Object getItem(int position) {
    return null;
}

@Override
public long getItemId(int position) {
    return 0;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

    // LayoutInflator to call external grid_item.xml file
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    View gridView;

    if (convertView == null) {

        gridView = new View(context);

        gridView = inflater.inflate(R.layout.grid_item, null);

        event = gridValues.get(position);

    } else {
        gridView = convertView;
    }
    return gridView;
}

Answer 1

根据定义，ConvertView被重用。确保更改视图项的值膨胀或设置它。

@Override
public View getView(int position, View convertView, ViewGroup parent) {

// LayoutInflator to call external grid_item.xml file
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

View gridView;

if (convertView == null) {

    gridView = inflater.inflate(R.layout.grid_item, null);

} else {
    gridView = convertView;
}

event = gridValues.get(position);
// TODO: set view values based on this event

return gridView;
}

GridView CustomGrid适配器重复项目

1 个答案: