listview实现简单图书管理

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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=".MainActivity"
    android:orientation="vertical">
 
    <ListView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/list_view"
        />
 
</LinearLayout>

<?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="horizontal">
 
    <ImageView
        android:id="@+id/book_img"
        android:layout_width="103dp"
        android:layout_height="113dp" />
 
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical">
 
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/book_name"
            />
 
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/book_author"
            />
 
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/book_info1"
            />
    </LinearLayout>
</LinearLayout>

package com.example.tow;
 
public class Book {
    String name;
    int imageId;
    String author;
    String info1;
    public Book(String name,int imageId,String author,String info1){
        this.name = name;
        this.imageId = imageId;
        this.author = author;
        this.info1 = info1;
    }
 
    public Book(String name,int imageId){
        this.name = name;
        this.imageId = imageId;
    }
    public String getName(){
        return name;
    }
    public int getImageId(){
        return imageId;
    }
    public String getAuthor(){
        return author;
    }
    public String getInfo1(){
        return info1;
    }
}

package com.example.tow;
 
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
 
import androidx.annotation.NonNull;
 
import java.util.List;
 
public class BookAdapter extends ArrayAdapter<Book> {
    private int resourceId;
    public BookAdapter(@NonNull Context context, int resource, @NonNull List<Book> objects){
        super(context,resource,objects);
        resourceId = resource;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent){
        Book book = getItem(position);
        //LayoutInflater动态加载子视图的布局
        View view = LayoutInflater.from(getContext()).inflate(resourceId,
                parent,false);
        ImageView bookImg = view.findViewById(R.id.book_img);
        TextView bookName = view.findViewById(R.id.book_name);
        TextView bookAuthor = view.findViewById(R.id.book_author);
        TextView bookInfo1 = view.findViewById(R.id.book_info1);
        bookImg.setImageResource(book.getImageId());
        bookName.setText(book.getName());
        bookAuthor.setText(book.getAuthor());
        bookInfo1.setText(book.getInfo1());
        return view;
    }
}

package com.example.tow;
 
import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
 
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
 
import java.util.ArrayList;
import java.util.List;
 
public class MainActivity extends AppCompatActivity {
    private List<Book> bookList = new ArrayList<>();
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initBook();
        BookAdapter adapter = new BookAdapter(MainActivity.this,R.layout.book_item,bookList);
        ListView listView = findViewById(R.id.list_view);
        listView.setAdapter(adapter);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int i, long id) {
                Book book = bookList.get(i);
                Toast.makeText(MainActivity.this,book.getName(),Toast.LENGTH_SHORT).show();
            }
        });
 
        listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int i, long l) {
                Book book = bookList.get(i);
                AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
                builder.setTitle("确认删除").setMessage("是否确认删除书籍"+book.getName()+"?");
                builder.setPositiveButton("是", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int ij) {
                        bookList.remove(i);
                        adapter.notifyDataSetChanged();
                        listView.invalidate();
                    }
                });
                builder.setNegativeButton("否", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {
                        dialogInterface.dismiss();
                    }
                });
                builder.show();
 
                return false;
            }
        });
    }
    public void initBook(){
        Book book1 = new Book("火影忍者疾风",R.drawable.book1,"牛仔|可以了","看人kiss");
        bookList.add(book1);
        Book book2 = new Book("火影剧场版",R.drawable.book2,"可爱卡卡西|写不下去了","学习kiss");
        bookList.add(book2);
        Book book3 = new Book("hello",R.drawable.book,"雷切|我说真的","自己去kiss");
        bookList.add(book3);
        Book book4 = new Book("我是卡卡西",R.drawable.book3,"小泽玛利亚|真写不下去了","巨好看的kiss");
        bookList.add(book4);
        Book book5 = new Book("我是鸣人",R.drawable.book4,"广末凉子|词穷了","我燃起来了");
        bookList.add(book5);
        Book book6 = new Book("你是个好人",R.drawable.book5,"鸣人|但是还是得写","我炸了");
        bookList.add(book6);
        Book book7 = new Book("我不想辜负你",R.drawable.book6,"自来也|没办法","开始战斗吧");
        bookList.add(book7);
        Book book8 = new Book("谢谢你",R.drawable.book,"罗密欧|我得交作业","谢谢你泰罗");
        bookList.add(book8);
        Book book9 = new Book("泰罗",R.drawable.book9,"朱丽叶|就这吧","真美");
        bookList.add(book9);
    }
}