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如何在Android中驱动gridview?_Android_Gridview_Adapter - Fatal编程技术网

如何在Android中驱动gridview?

如何在Android中驱动gridview?,android,gridview,adapter,Android,Gridview,Adapter,我写了以下内容,将数据显示到网格视图中。这是我的程序代码 在onCreate()中 最后,这是我的“新闻适配器”: “网格新闻”的格式是这样的 <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android

我写了以下内容,将数据显示到网格视图中。这是我的程序代码

在onCreate()中

最后,这是我的“新闻适配器”:

“网格新闻”的格式是这样的

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" >

    <TextView
        android:id="@+id/news_icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:contentDescription="@string/menu_contentdescription"
        android:layout_centerHorizontal="true" />

    <TextView
        android:id="@+id/news_label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:textColor="#ffffff"
        android:textSize="15sp"
        android:textStyle="bold"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:paddingBottom="10dip" />

</RelativeLayout>


我不知道为什么在模拟器/设备中看不到结果。

我想这是因为getCount()返回0;它不应该是itemList.size()吗?在新闻适配器中。

Yap,完全正确。天哪,两个小时后你就成功了。非常感谢。
@Override
    protected void onStart() {
        super.onStart();
        String strNewsContent = "***";

        ...

        newsAdapter.setData(parsedList);
        newsAdapter.notifyDataSetChanged();
    }
public class NewsAdapter extends BaseAdapter {

    private LayoutInflater myInflater;
    private NewsFeedItemList itemList;


    public NewsAdapter(Context c) {
        myInflater = LayoutInflater.from(c);
    }

    public void setData(NewsFeedItemList newsFeedItemList){
        itemList = newsFeedItemList;

        Log.i("NewsAdapter", "Parsed list passed to the adapter.");
    }

    @Override
    public int getCount() {
        return 0;
    }

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

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

    public View getView(int position, View convertView, ViewGroup parent){
        ViewHolder holder;

        if (convertView == null) {
            convertView = myInflater.inflate(R.layout.grid_news, null);
            holder = new ViewHolder();
            holder.ivIcon = (TextView) convertView.findViewById(R.id.news_icon);
            holder.tvLabel = (TextView) convertView.findViewById(R.id.news_label);

            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        holder.ivIcon.setText(itemList.getImage().get(position));
        holder.tvLabel.setText(itemList.getTitle().get(position));

        Log.i("Position is>>>>:", Integer.toString(position));

        return convertView;
    }   

    static class ViewHolder {
        TextView ivIcon;
        TextView tvLabel;
    }

}
<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" >

    <TextView
        android:id="@+id/news_icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:contentDescription="@string/menu_contentdescription"
        android:layout_centerHorizontal="true" />

    <TextView
        android:id="@+id/news_label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:textColor="#ffffff"
        android:textSize="15sp"
        android:textStyle="bold"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:paddingBottom="10dip" />

</RelativeLayout>