我有一个可以接受 2 种不同类型对象的 ListView：Food 和 SectionItem。
我有这个 ：
我想知道是否可以像这样在 SectionItem 和 Food 项目之间进行布局填充/边距差异（仅使用一个 ListView）：
这是我的适配器：
public class FoodsAdapter extends ArrayAdapter<Item> {
private Context context;
private ArrayList<Item> items;
private LayoutInflater vi;
public FoodsAdapter(Context context,ArrayList<Item> items) {
super(context,0, items);
this.context = context;
this.items = items;
vi = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
final Item i = items.get(position);
if (i != null) {
if(i.isSection()){
SectionItem si = (SectionItem)i;
v = vi.inflate(R.layout.activity_souscarte_list_item_titlesouscategorie, null);
v.setOnClickListener(null);
v.setOnLongClickListener(null);
v.setLongClickable(false);
final TextView sectionView = (TextView) v.findViewById(R.id.souscarte_titlesouscategorie);
sectionView.setText(si.getTitle());
}else{
Food food = (Food)i;
v = vi.inflate(R.layout.activity_souscarte_list_item_elementsouscategorie, null);
final TextView title = (TextView) v.findViewById(R.id.souscarte_element_title);
final TextView prix = (TextView) v.findViewById(R.id.souscarte_element_prix);
final TextView desc = (TextView) v.findViewById(R.id.souscarte_element_desc);
if (title != null)
title.setText(food.getName());
if (prix != null)
prix.setText(Float.toString(food.getPrice())+ "€");
if (desc != null)
desc.setText(food.getDescription());
}
}
return v;
}
}
这是我的活动：
public class SousCarteActivityNew extends Activity {
private ArrayList<ArrayList<Food>> arraySousCategories;
private ArrayList<Item> allFoodsInOne;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_souscarte_list_item);
arraySousCategories = FoodsContainer.sousCategoriesArray;
allFoodsInOne = new ArrayList<Item>();
for (ArrayList<Food> foodArray : arraySousCategories){
allFoodsInOne.add(new SectionItem(foodArray.get(0).getType()));
for (Food food : foodArray){
allFoodsInOne.add(food);
}
}
LinearLayout ll = (LinearLayout) findViewById(R.id.souscarte_linearlayout);
ListView lv = new ListView(getApplicationContext());
FoodsAdapter adapter = new FoodsAdapter(getApplicationContext(), allFoodsInOne);
lv.setAdapter(adapter);
ll.setPadding(15, 15, 15, 0);
ll.addView(lv);
}
}
这是我的 activity_souscarte_list_item_titlesouscategorie.xml ：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView android:id="@+id/souscarte_titlesouscategorie"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@color/green"
android:gravity="center"
android:layout_margin="0dp"
android:textColor="@color/white"
android:textSize="19sp"/>
</LinearLayout>
这是我的 activity_souscarte_list_item_elementsouscategorie.xml ：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="@color/white"
android:id="@+id/souscarte_element_layout"
android:layout_marginLeft="17dp"
android:layout_marginRight="17dp"
android:padding="5dp">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:id="@+id/souscarte_element_title"
android:textColor="@color/black"
android:layout_weight="3"
android:paddingLeft="5dp"/>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:id="@+id/souscarte_element_prix"
android:gravity="right"
android:textColor="@color/black"
android:layout_weight="1"
android:paddingRight="5dp"/>
</LinearLayout>
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="@color/black"
android:id="@+id/souscarte_element_desc"
android:paddingLeft="5dp"
android:paddingRight="5dp"/>
</LinearLayout>