Question

我有一个使用SimpleCursorAdapter从SQLite数据库填充的列表视图。在游标中返回的一个列是整数值0或1.在我的列表视图中，我想以更友好的形式显示它（即“是”或“否”）并且可能使用不同的文本颜色为每个人。这是我的来源：

Cursor c = dbHelper.fetchAllItems();
startManagingCursor(c);

String[] from = {"deployed", "designation", "serial"};
int[] to = {R.id.deployed, R.id.designation, R.id.serial};

setListAdapter(new SimpleCursorAdapter(this, R.layout.list_item, c, from, to));

当SimpleCursorAdapter将每个视图简单地映射到列名时，如何有条件地切换布局中的元素和/或属性。（假设我不能使用SimpleCursorAdapter来完成此操作，这是安全的吗？）

Answer 1

通过添加自定义适配器，扩展CursorAdapter

来解决

修饰：

Cursor c = dbHelper.fetchAllItems();
startManagingCursor(c);

setListAdapter(new RowAdapter(this, c));

新嵌套类：

private static class RowAdapter extends CursorAdapter {

    public RowAdapter(Context context, Cursor c) {
        super(context, c);
    }

    public void bindView(View view, Context context, Cursor c) {
        TextView vDesignation = (TextView) view.findViewById(R.id.designation);
        TextView vSerial = (TextView) view.findViewById(R.id.serial);
        TextView vDeployed = (TextView) view.findViewById(R.id.deployed);

        String designation = c.getString(c.getColumnIndexOrThrow("designation"));
        String serial = c.getString(c.getColumnIndexOrThrow("serial"));
        int deployed = c.getInt(c.getColumnIndexOrThrow("deployed"));

        vDesignation.setText(designation);
        vSerial.setText(serial);
        vDeployed.setText(deployed > 0 ? R.string.yes : R.string.no);
        vDeployed.setTextColor(deployed > 0 ? view.getResources().getColor(R.color.yes) : view.getResources().getColor(R.color.no));
    }

    public View newView(Context context, Cursor c, ViewGroup parent) {
        LayoutInflater inflater = LayoutInflater.from(context);
        View view = inflater.inflate(R.layout.list_item, parent, false);
        bindView(view, context, c);
        return view;
    }
}

Android应用，ListView中的条件文本

1 个答案: