Android TextView 右上角文字角标(TM, ©，® )

Posted 2022-12-07 胖虎

两种实现方式：

		// ============ Use html String ==========

        TextView tvUseHtml = findViewById(R.id.tvUseHtml);
        String htmlString = "This is use HTML string.<sup><small>Sina weibo</small></sup>";
        tvUseHtml.setText(Html.fromHtml(htmlString));

        // ============ Use SuperscriptSpan ==========

        TextView tvUseSpan = (TextView) findViewById(R.id.tvUseSpan);
        String baseString = "This is use SuperscriptSpan.";
        String extendString = "Sina weibo";
        SpannableStringBuilder cs = new SpannableStringBuilder(baseString + extendString);
        int start = baseString.length();
        cs.setSpan(new SuperscriptSpan(),
                start,
                start + extendString.length(),
                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        cs.setSpan(new RelativeSizeSpan(0.75f),
                start,
                start + extendString.length(),
                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        tvUseSpan.setText(cs);