EmojiTextView.java 文件源码

@Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
  final int size = MeasureSpec.getSize(widthMeasureSpec);
  final int mode = MeasureSpec.getMode(widthMeasureSpec);
  if (!useSystemEmoji()                                            &&
      getEllipsize() == TruncateAt.END                             &&
      !TextUtils.isEmpty(source)                                   &&
      (mode == MeasureSpec.AT_MOST || mode == MeasureSpec.EXACTLY) &&
      getPaint().breakText(source, 0, source.length()-1, true, size, null) != source.length())
  {
    needsEllipsizing = true;
    FontMetricsInt font = getPaint().getFontMetricsInt();
    super.onMeasure(MeasureSpec.makeMeasureSpec(size, MeasureSpec.EXACTLY),
                    MeasureSpec.makeMeasureSpec(Math.abs(font.top - font.bottom), MeasureSpec.EXACTLY));
  } else {
    needsEllipsizing = false;
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
  }
}