Listview 5“项目”水平与垂直滚动Android

Question

我想知道如何使用垂直滚动制作每行5个项目的ListView

Answer 1

You need to create a custom row, then have 60 rows.

Lets asume you have an

ArrayList<String> cars 

with the cars data.

    @Override
    public View getView(int position, View convertView, ViewGroup parent)
    {  
       //Determine the first car
       int firstCarPosition = position*5;
       CarListItem item = new CarListItem(context);
       item.fillItem(firstCarPosition);
       return item;
    }

then create a class like this one

public class CarListItem extends LinearLayout {

  public SingleRowListItem(Context context) {
    super(context);
    LayoutInflater inflater =     (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    inflater.inflate(R.layout.list_item_cars_row, this, true);
  }

 public void fillItem(int firstPosition)
 {
     TextView car1 = (TextView)findViewById(R.id.car1);
     TextView car2 = (TextView)findViewById(R.id.car2);
     TextView car3 = (TextView)findViewById(R.id.car3);
     TextView car4 = (TextView)findViewById(R.id.car4);
     TextView car5 = (TextView)findViewById(R.id.car5);

     car1.setText(cars.get(firstPosition);
     car2.setText(cars.get(firstPosition+1);
     car3.setText(cars.get(firstPosition+2);
     car4.setText(cars.get(firstPosition+3);
     car5.setText(cars.get(firstPosition+4);
 }
}

Finally, create an XML called list_item_car_row:

<?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="60dp"
android:background="@drawable/standard_background"
android:orientation="horizontal"
>
    <TextView
    android:id="@+id/car1"
    android:layout_height="wrap_content"
    android:layout_weight="wrap_content"/>
    <TextView
    android:id="@+id/car2"
    android:layout_height="wrap_content"
    android:layout_weight="wrap_content"/>
    <TextView
    android:id="@+id/car3"
    android:layout_height="wrap_content"
    android:layout_weight="wrap_content"/>
    <TextView
    android:id="@+id/car4"
    android:layout_height="wrap_content"
    android:layout_weight="wrap_content"/>
    <TextView
    android:id="@+id/car5"
    android:layout_height="wrap_content"
    android:layout_weight="wrap_content"/>  
</LinearLayout>

That is what is called a component, a not system default item. This component is based on 6 textviews. Edit the XML, add it more data and make a cool one :)

Answer 2

As I got it, you want to make a ordinary ListView with vertical Scrolling but in every row you want to have Horizontal Scrolling too.

Make ordinary ListView with any adapter you like but design the item Layout like this:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">

    <HorizontalScrollView
        android:id="@+id/hor_scroll"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

        <LinearLayout
            android:id="@+id/lin"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <ImageView
                android:id="@+id/icon"
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:layout_marginRight="6.0dip"
                android:layout_alignParentTop="true"
                android:layout_alignParentBottom="true"
                android:focusable="false" />

            <TextView
                android:textAppearance="?android:textAppearanceMedium"
                android:gravity="center_vertical"
                android:id="@+id/text"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:singleLine="true"
                android:layout_toRightOf="@id/icon"
                android:layout_alignParentTop="true"
                android:layout_alignParentBottom="true" />

        </LinearLayout>

    </HorizontalScrollView>


</RelativeLayout>

You'll have Vertically Scrollable ListView with horizontally scrollabel items.

Answer 3

You must create a vertical ListView with a custom ListAdapter with the derired 5 items per row. You can describe the layout of the rows in a XML layout file. For example see http://www.survivingwithandroid.com/2012/10/android-listview-custom-adapter-and.html .

Answer 4

You need to create a layoutfile with a Listview

<ListView
    android:id="@+id/list"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

Then in code you need an ArrayAdapter (I always create my own!) to populate your list and a item_layout for every item

arrayAdapter = new ArrayAdapter(getActivity().getApplicationContext(), R.layout.item_layout, someArrayList);
        ListView lv = (ListView) view.findViewById(R.id.list);
        lv.setAdapter(arrayAdapter );