我正在创建一个带有相对布局和内部列表视图的抽屉布局(一个用于主要内容,一个用于导航)
对于列表视图,我创建了一个自定义适配器,并使用具有 imageview 和 textview 的 list_item xml 文件创建每一行。
该应用程序运行,但是当我打开抽屉时,我只看到没有列表视图的背景。现在,如果我使用 ArrayAdapter(默认)尝试它,则会显示列表视图。
有什么建议吗?
我的自定义适配器
public class CustomAdapter extends ArrayAdapter<Categories>{
Context context;
int layoutResourceId;
Categories[] data = null;
public CustomAdapter(Context context, int layoutResourceId, Categories[] categs) {
super(context, layoutResourceId);
this.layoutResourceId = layoutResourceId;
this.context = context;
data = categs;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
PHolder holder = null;
if(row == null)
{
LayoutInflater inflater = ((Activity)context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new PHolder();
holder.imgIcon = (ImageView)row.findViewById(R.id.categimage);
holder.txtTitle = (TextView)row.findViewById(R.id.categtext);
row.setTag(holder);
}
else
{
holder = (PHolder)row.getTag();
}
Categories categ = data[position];
holder.txtTitle.setText(categ.title);
holder.imgIcon.setImageResource(categ.icon);
return row;
}
static class PHolder
{
ImageView imgIcon;
TextView txtTitle;
}
}
在我的主要活动中
mDrawerList = (ListView) findViewById(R.id.categlist);
Categories data[] = new Categories[]
{
new Categories(R.drawable.restaurant, R.string.food),
new Categories(R.drawable.bar_coktail, R.string.bar),
new Categories(R.drawable.mall, R.string.shop),
new Categories(R.drawable.agritourism, R.string.out),
new Categories(R.drawable.dance_class, R.string.art),
new Categories(R.drawable.officebuilding, R.string.other),
new Categories(R.drawable.university, R.string.education),
new Categories(R.drawable.townhouse, R.string.house),
new Categories(R.drawable.junction, R.string.transport)
};
CustomAdapter ca = new CustomAdapter(this, R.layout.list_item, data);
View header = (View)getLayoutInflater().inflate(R.layout.list_header, null);
mDrawerList.addHeaderView(header);
mDrawerList.setAdapter(ca);