Android 搜索到的關鍵字改變顏色

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private class MyAdapter extends BaseAdapter {

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

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

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

    @Override
    public View getView(int arg0, View arg1, ViewGroup arg2) {
        LayoutInflater mInflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
        View mView = mInflater.inflate(R.layout.cell_anchor, arg2, false);
        ImageView mImage = (ImageView) mView
                .findViewById(R.id.search_anchor_image);
        TextView mTextName = (TextView) mView
                .findViewById(R.id.search_anchor_name);
        TextView mTextId = (TextView) mView
                .findViewById(R.id.search_anchor_id);

        int chageTextColor;
        ForegroundColorSpan redSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue));
        LiveRoom anchor = mAnchors.get(arg0);

        SpannableStringBuilder builder = new SpannableStringBuilder(
                anchor.anchorName);
        chageTextColor = anchor.anchorName.indexOf(mSearchText);
        if (chageTextColor != -1) {
            builder.setSpan(redSpan, chageTextColor, chageTextColor
                    + mSearchText.length(),
                    Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
            mTextName.setText(builder);
        } else
            mTextName.setText(anchor.anchorName);

        SpannableStringBuilder builder1 = new SpannableStringBuilder(
                String.valueOf(anchor.anchorId));
        chageTextColor = String.valueOf(anchor.anchorId).indexOf(
                mSearchText);
        if (chageTextColor != -1) {
            builder1.setSpan(redSpan, chageTextColor, chageTextColor
                    + mSearchText.length(),
                    Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
            mTextId.setText(builder1);
        } else
            mTextId.setText(String.valueOf(anchor.anchorId));
        return mView;
    }

}