Android 一个按钮实现列表数据单选全选功能 具体实现代码

当然！以下是一个简单示例的代码，展示了如何在Android中使用一个按钮实现列表数据的单选和全选功能：

public class MainActivity extends AppCompatActivity {
    private Button selectAllButton;
    private ListView listView;
    private CustomAdapter adapter;
    private List<Item> itemList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        selectAllButton = findViewById(R.id.select_all_button);
        listView = findViewById(R.id.list_view);

        // 初始化数据列表
        itemList = new ArrayList<>();
        itemList.add(new Item("Item 1", false));
        itemList.add(new Item("Item 2", false));
        itemList.add(new Item("Item 3", false));
        // 添加更多项...

        adapter = new CustomAdapter(this, itemList);
        listView.setAdapter(adapter);

        selectAllButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                boolean allSelected = true;

                // 检查是否已经全部选中
                for (Item item : itemList) {
                    if (!item.isSelected()) {
                        allSelected = false;
                        break;
                    }
                }

                // 根据当前状态选择全部或取消全部
                if (allSelected) {
                    for (Item item : itemList) {
                        item.setSelected(false);
                    }
                } else {
                    for (Item item : itemList) {
                        item.setSelected(true);
                    }
                }

                adapter.notifyDataSetChanged(); // 更新列表项的UI
            }
        });
    }

    // 数据适配器
    private class CustomAdapter extends BaseAdapter {
        private Context context;
        private List<Item> itemList;

        public CustomAdapter(Context context, List<Item> itemList) {
            this.context = context;
            this.itemList = itemList;
        }

        @Override
        public int getCount() {
            return itemList.size();
        }

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

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            LayoutInflater inflater = LayoutInflater.from(context);
            View view = inflater.inflate(R.layout.list_item, parent, false);

            TextView itemNameTextView = view.findViewById(R.id.item_name_text_view);
            CheckBox itemCheckBox = view.findViewById(R.id.item_check_box);

            Item item = itemList.get(position);
            itemNameTextView.setText(item.getName());
            itemCheckBox.setChecked(item.isSelected());

            // 设置单选和全选的UI效果
            if (item.isSelected()) {
                view.setBackgroundColor(Color.GREEN);
            } else {
                view.setBackgroundColor(Color.TRANSPARENT);
            }

            // 点击列表项时切换选中状态
            view.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    item.setSelected(!item.isSelected());
                    notifyDataSetChanged(); // 更新列表项的UI
                }
            });

            return view;
        }
    }

    // 数据模型
    private class Item {
        private String name;
        private boolean selected;

        public Item(String name, boolean selected) {
            this.name = name;
            this.selected = selected;
        }

        public String getName() {
            return name;
        }

        public boolean isSelected() {
            return selected;
        }

        public void setSelected(boolean selected) {
            this.selected = selected;
        }
    }
}

请注意，上述代码只是一个简单示例，您可能需要根据您的具体需求进行修改和调整。希望能帮到您！如果有任何问题，请随时提问。