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list.xml

item.xml

Book.java

public class Book {    private String bookName;    private String bookPrice;    public Book(String bookName, String bookPrice) {        this.bookName = bookName;        this.bookPrice = bookPrice;    }    public String getBookName() {        return bookName;    }    public String getBookPrice() {        return bookPrice;    }    public void setBookName(String bookName) {        this.bookName = bookName;    }    public void setBookPrice(String bookPrice) {        this.bookPrice = bookPrice;    }}

list.java

List
   
     data = new ArrayList<>();        for(int i = 0; i < 3; i++) {            Book b = new Book("book","100");            data.add(b);        }        ListView listview = (ListView) findViewById(R.id.listview);        MyListViewAdapter t = new MyListViewAdapter(this, data);        listview.setAdapter(t);
   

MyListViewAdapter.java

public class MyListViewAdapter extends BaseAdapter {    private List
   
     list;    LayoutInflater inflater;    public MyListViewAdapter(Context context, List
    
      list) {        this.list = list;        inflater = LayoutInflater.from(context);    }    @Override    public int getCount() {        if (list == null) {            return 0;        }        return list.size();    }    @Override    public long getItemId(int i) {        return i;    }    @Override    public Object getItem(int i) {        if (list == null) {            return null;        }        return list.get(i);    }    @Override    public View getView(int i, View convertView, ViewGroup viewGroup) {        ViewHolder viewHolder;        // 当view为空时才加载布局，否则，直接修改内容        if (convertView == null) {            // 通过inflate的方法加载布局，context需要在使用这个Adapter的Activity中传入。            convertView = inflater.inflate(R.layout.item, null);            viewHolder = new ViewHolder();            viewHolder.bookName = (TextView) convertView.findViewById(R.id.name);            viewHolder.bookPrice = (TextView) convertView.findViewById(R.id.price);            convertView.setTag(viewHolder); // 用setTag方法将处理好的viewHolder放入view中        } else { // 否则，让convertView等于view，然后从中取出ViewHolder即可            viewHolder = (ViewHolder) convertView.getTag();        }        // 从viewHolder中取出对应的对象，然后赋值给他们        viewHolder.bookName.setText(list.get(i).getBookName());        viewHolder.bookPrice.setText(list.get(i).getBookPrice());        // 将这个处理好的view返回        return convertView;    }    private class ViewHolder {        public TextView bookName;        public TextView bookPrice;    }}
    
   

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