[Android] getRelativeTimeSpanString

* How to find time is today or yesterday in android
* DateUtils | Android Developer

可以簡單的用一行

DateUtils.getRelativeTimeSpanString(sdf.parse(d).getTime(),System.currentTimeMillis(), DateUtils.MINUTE_IN_MILLIS, DateUtils.FORMAT_ABBREV_RELATIVE).toString();

就解決了！