Android ListView+图片

Main5Activity 代码如下：


public class Main5Activity extends AppCompatActivity {
    private List<Fruit> fruitList =new ArrayList<>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main5);
        initFruits();
        FruitAdapter adapter =new FruitAdapter(Main5Activity.this,R.layout.fruit_item,fruitList);
        ListView listView=(ListView)findViewById(R.id.list_View);
        listView.setAdapter(adapter);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Fruit fruit =fruitList.get(position);
                Toast.makeText(Main5Activity.this,fruit.getName(),Toast.LENGTH_SHORT).show();
            }
        });

    }
    private void initFruits(){
        for (int i=0;i<2;i++){
            Fruit apple = new Fruit("Apple",R.drawable.apple);
            fruitList.add(apple);
            Fruit banbana=new Fruit("Banbana",R.drawable.banbana);
            fruitList.add(banbana);
        }
    }
}

activity_main5.xml 代码如下：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.lnjr.ll.Main5Activity">

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

    </ListView>
    <ImageView
        android:layout_width="100dp"
        android:layout_height="100dp" />

</RelativeLayout>

FruitAdapter.java代码如下：


public class FruitAdapter extends ArrayAdapter<Fruit> {
    private int resourceId;
    public FruitAdapter(Context context, int textViewResourceId,
                        List<Fruit> objects){
        super(context,textViewResourceId,objects);
        resourceId=textViewResourceId;
    }
    public View getView(int position, View convertView, ViewGroup parent){
        Fruit fruit =getItem(position);
        View view;
        ViewHolder viewHolder;
        if (convertView==null){
            view=LayoutInflater.from(getContext()).inflate(resourceId,parent,false);
            viewHolder=new ViewHolder();
            viewHolder.fruitImage=(ImageView)view.findViewById(R.id.fruit_image);
            viewHolder.fruitName=(TextView)view.findViewById(R.id.fruit_name);
            view.setTag(viewHolder);
        }else {
view=convertView;
            viewHolder=(ViewHolder)view.getTag();
        }
        viewHolder.fruitImage.setImageResource(fruit.getImageId());
        viewHolder.fruitName.setText(fruit.getName());
        return view;
    }
    class ViewHolder{
        ImageView fruitImage;
        TextView fruitName;
    }

}

Fruit.java 代码如下：


public class Fruit {
    private String name;
    private int imageId;

    public Fruit(String name ,int imageId){
        this.name=name;
        this.imageId=imageId;
    }
    public String getName(){
        return name;
    }
    public int getImageId(){
        return imageId;
    }
}

fruit_item.xml 代码如下：

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


    <ImageView
        android:id="@+id/fruit_image"
        android:layout_width="100dp"
        android:layout_height="100dp"
        />
    <TextView
        android:id="@+id/fruit_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:layout_marginLeft="10dp"
        >

    </TextView>


</LinearLayout>

Screenshot_1556444066.png