防止在SpannableString之前键入SearchView

Question

在Android SearchView中我制作了一个TextView并添加了＃34;本网站＆＃34;然后将视图转换为位图并使用可绘制的形状添加范围。

我不希望我的光标在Span之前输入，setSelection似乎不适合我

    final SearchView sv = new SearchView(getActivity());

    final String tokenName = "This Site";
    final SpannableStringBuilder sb = new SpannableStringBuilder();
    TextView tv = createSearchTokenTextView(tokenName);

    BitmapDrawable bd = (BitmapDrawable) convertViewToDrawable(tv);
    bd.setBounds(0, 0, bd.getIntrinsicWidth(), bd.getIntrinsicHeight());

    sb.append(tokenName + " ");
    sb.setSpan(new ImageSpan(bd), sb.length() - (tokenName.length() + 1), sb.length() - 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

    Selection.setSelection(sb, 0, sb.toString().length());

    sv.setQuery(sb, false);