Android最常用的ListView解决方案大集合

实现以上效果需解决

1选择苹果时并不是所有的苹果都被选中

2解决如果是几千条数据，等大数据带来的程序崩溃问题

3实现添加头部和脚部

4全选和反选

java源码部分

FruitAdapter

public class FruitAdapter extends BaseAdapter {
    private List<Fruit> mFruits;
    private LayoutInflater Inflater;
    private boolean[] mManagerAllCheckBox;

    public FruitAdapter(LayoutInflater Inflater, List fruits) {
        this.Inflater = Inflater;
        this.mFruits = fruits;
        mManagerAllCheckBox = new boolean[fruits.size()];
    }

    /**
     * 全选
     */
    public void selectAll() {
        for (int i = 0; i < mFruits.size(); i++) {
            mManagerAllCheckBox[i] = true;
            notifyDataSetChanged();
        }

    }

    public void selectFan() {
        for (int i = 0; i < mFruits.size(); i++) {
            mManagerAllCheckBox[i] = !mManagerAllCheckBox[i];
            notifyDataSetChanged();
        }
    }

    /**
     * 点击Item选择CheckBox
     */
    public void select(int position) {
        mManagerAllCheckBox[position] = !mManagerAllCheckBox[position];
        notifyDataSetChanged();

    }

    @Override

    public int getCount() {
        return mFruits.size();
    }

    @Override
    public Object getItem(int position) {
        return position;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        //通过ViewHolder不必每一个item都生成view，使得运行内存大大减少
        ViewHolder vh = null;
        Fruit fruit = mFruits.get(position);
        if (convertView == null) {
          //别忘了生成对象，否则报空指针
            vh = new ViewHolder();
            //LayoutInflater把XML转化为view
            convertView = Inflater.inflate(R.layout.list_fruit, null);
            vh.checkBox = (CheckBox) convertView.findViewById(R.id.checkbox);
            vh.imageView = (ImageView) convertView.findViewById(R.id.image_fruit);
            vh.textView = (TextView) convertView.findViewById(R.id.textview_name);
            convertView.setTag(vh);
        } else {
            vh = (ViewHolder) convertView.getTag();
        }

        vh.textView.setText(fruit.getName());
        vh.imageView.setImageResource(fruit.getImg());
        vh.checkBox.setChecked(mManagerAllCheckBox[position]);
        return convertView;
    }

    class ViewHolder {
        TextView textView;
        ImageView imageView;
        CheckBox checkBox;

    }
}

MyFruitAdapterActivity

public class MyFruitAdapterActivity extends AppCompatActivity {
    private ListView mListView;
    private List<Fruit> mFruits;
    private FruitAdapter fruitAdapter;
    private LayoutInflater inflater;
    private View mListViewFoot;
    private View mListViewHead;
    private Button mButtonSeleckAll;
    private Button mButtonSeleckFan;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.listview);
        mListView = (ListView) findViewById(R.id.listview1);
        //LayoutInflater作用是将layout的xml布局文件实例化为View类对象。
        inflater = getLayoutInflater();
        //调用初始化数据方法
        initData();

        //FruitAdapter需要传递两个参数类型LayoutInflater ， List
        fruitAdapter = new FruitAdapter(inflater, mFruits);
        //把适配器添加到ListView

       //通过LayoutInflater的inflater对象实例化为XML文件的View类对象
        mListViewFoot = inflater.inflate(R.layout.list_foot, null);
        mListViewHead = inflater.inflate(R.layout.list_head, null);

        //通过View类对象使用findViewById
        mButtonSeleckAll= (Button) mListViewHead.findViewById(R.id.select_all);
        mButtonSeleckFan= (Button) mListViewFoot.findViewById(R.id.select_fan);

        //添加首尾，传入View类型参数
        mListView.addFooterView(mListViewFoot);
        mListView.addHeaderView(mListViewHead);

        //将适配器添加到ListView
        //注意此行的位置
        mListView.setAdapter(fruitAdapter);
         //全选按钮点击事件
        mButtonSeleckAll.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                fruitAdapter.selectAll();
            }
        });
        //反选按钮点击事件
        mButtonSeleckFan.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                fruitAdapter.selectFan();
            }
        });

        //给ListView的每一个item添加点击事件
        mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Log.d("myfruit", "选中了" + mFruits.get(position - 1).getName());
                fruitAdapter.select(position-1 );
            }
        });
    }

    //这样是重复的对象，当选中的时候会都选中
//    public void initData() {
//        mFruits = new ArrayList<>();
//        Fruit apple = new Fruit("苹果", R.mipmap.a_logo1);
//        Fruit banana = new Fruit("苹果", R.mipmap.a_logo1);
//        Fruit grape = new Fruit("苹果", R.mipmap.a_logo1);
//        for (int i = 0; i < 5; i++) {
//            mFruits.add(apple);
//            mFruits.add(banana);
//            mFruits.add(grape);
//        }
//    }
    //这样
    public void initData() {
        mFruits = new ArrayList<>();
        for (int i = 0; i < 5; i++) {
            Fruit apple = new Fruit("苹果", R.mipmap.apple);
            Fruit banana = new Fruit("香蕉", R.mipmap.banana);
            Fruit grape = new Fruit("葡萄", R.mipmap.grape);
            mFruits.add(apple);
            mFruits.add(banana);
            mFruits.add(grape);

        }

    }
}

Fruit

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

    public  Fruit( String name, int img){
        this.name=name;
        this.img=img;

    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getImg() {
        return img;
    }

    public void setImg(int img) {
        this.img = img;
    }

}

XML源码部分

listview.xml

list_fruit.xml

list_foot.xml

list_head.xml

listview.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ListView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/listview1">

    </ListView>

</LinearLayout>

list_fruit.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="horizontal">

    <CheckBox
        android:id="@+id/checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
       android:layout_margin="30dp"

        android:focusable="false"/> <!---->

    <ImageView
        android:id="@+id/image_fruit"
        android:layout_width="100dp"
        android:layout_height="100dp" />
    <TextView
        android:id="@+id/textview_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"

        android:layout_marginLeft="10dp"/>
</LinearLayout>

list_foot.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <Button
        android:id="@+id/select_fan"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="反选"/>

</LinearLayout>

list_head.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Button
        android:id="@+id/select_all"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="全选"/>

</LinearLayout>

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