Question

我想创建一个复选框列表，这些复选框是从数据库中的表动态生成的，代码可能如下所示：

    public void getCategories(Context context) {

    Quote quote_instance = new Quote();
    final ArrayList<Quote> allQuotesObjects = quote_instance
            .getAllObjectsForField(context, "Category");
    categories_items = new String[allQuotesObjects.size() - 1];
    final boolean[] itemsChecked = new boolean[categories_items.length];
    for (int x = 0; x < allQuotesObjects.size() - 1; x++) {
        categories_items[x] = allQuotesObjects.get(x).Category;
    }
    cat_list = new ArrayList<String>(Arrays.asList(categories_items));
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle(getResources().getString(
            R.string.category_widget_label));
    builder.setPositiveButton("Select",
            new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    for (int i = 0; i < categories_items.length; i++) {
                        if (itemsChecked[i]) {
                            categories_ids.add(i);
                        } else if (categories_ids.contains(i)) {
                            categories_ids.remove(i);
                        }
                    }
                }
            });
//  Log.i("AHMAD", cat_list.toString());

    boolean[] prechecked = new boolean[categories_items.length];
    Arrays.fill(prechecked, true);
    builder.setMultiChoiceItems(categories_items, prechecked,
            new DialogInterface.OnMultiChoiceClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which,
                        boolean isChecked) {
                    itemsChecked[which] = isChecked;
                }
            });
    builder.show();
}

它应该看起来像这张照片 http://i.stack.imgur.com/uc9UR.png （抱歉无法发布图片）

我无法为每个项目创建一个复选框，因为它们是实用生成的。如何使用共享首选项制作此列表？

Answer 1

你不能只做一个超过你需要数量的for循环，然后打电话：

Checkbox cb = new Checkbox(getApplicationContext());
cb.(add attributes)
layout.addView(cb)

复选框列表 - 共享偏好

1 个答案: