使TextView使用具有不同样式的自定义字体（常规和斜体）

Question

我有一个TextView，我需要在其上显示以下字符串：＆＃34;一些文本＆＃34;。我希望TextView为此使用自定义字体。所以我需要得到以下输出：

我尝试了以下代码：

    textView.setText("some <i>text</i>");
    final Typeface typeface = Typeface.createFromAsset(getActivity().getAssets(), "customfont-regular.otf");
    if (typeface != null)
        textView.setTypeface(typeface);

但结果是：，所以Italic实际上是假的，由系统生成。然后我尝试了以下内容：

    textView.setText("some <i>text</i>");
    final Typeface typeface = Typeface.createFromAsset(getActivity().getAssets(), "customfont-regular.otf");
    if (typeface != null)
        textView.setTypeface(typeface, Typeface.NORMAL);
    final Typeface typefaceItalic = Typeface.createFromAsset(getActivity().getAssets(), "customfont-italic.otf");
    if (typefaceItalic != null)
        textView.setTypeface(typefaceItalic, Typeface.ITALIC);

但输出是全部的！

那么如何在单个TextView中组合常规和斜体的自定义字体？

Answer 1

经过一番研究后，我找到了以下解决方案：

    final Typeface typefaceItalic = Typeface.createFromAsset(getActivity().getAssets(), "customfont-italic.otf");

    // there is no easy way in Android to make a single TextView display text using custom typeface with different styles (regular and italic). We need to replace all Italic spans with custom typeface spans for this.
    final SpannableString text = new SpannableString("some <i>text</i>");
    final StyleSpan[] spans = text.getSpans(0, text.length(), StyleSpan.class);
    for (StyleSpan span : spans) {
        if (span.getStyle() == Typeface.ITALIC) {
            text.setSpan(new CustomTypefaceSpan("customfont", italicTypeface), text.getSpanStart(span), text.getSpanEnd(span), 0);
            text.removeSpan(span);
        }
    }
    textView.setText(text);

    final Typeface typeface = Typeface.createFromAsset(getActivity().getAssets(), "customfont-regular.otf");
    if (typeface != null)
        textView.setTypeface(typeface, Typeface.NORMAL);

CustomTypefaceSpan是此处描述的类：https://stackoverflow.com/a/4826885/190148