Just out of curiosity, has anybody tried using Joda Time (http://joda- time.sourceforge.net/) in an Android application? The Joda API is much better than Java's built-in Date and Calendar classes.
++Steve On Mar 8, 12:54 pm, sm1 <sergemas...@gmail.com> wrote: > There may be built-in methods for such things as "5 minutes ago" but I > don't know any yet. > > for the current time in human-readable form, using some default date > display format (which may or may not be dependent on user-preferred > locale and date format selection, this remains TBD for Android), the > fastest way is: > > ""+new Date() > > and with a given time in millis, it would be as in: > > " Build.TIME "+Build.TIME+" = "+new Date(Build.TIME) > > Calendar is recommended for conversions (e.g., time zone changes) and > for other calculations with dates, such add, after, before, compareTo. > > When you create a Calendar, it is already set to the current time: > > Calendar cal = Calendar.getInstance(); > > is usually equivalent and preferable to: > > long millis = System.currentTimeMillis(); //don't do these 4 > statements > Date date = new Date(millis); > Calendar c = Calendar.getInstance(); > c.setTime(date); > > And if you need to use SimpleDateFormat, because for example you don't > want to use the default format you get from Date, then take special > care because some implementations are not multithreaded, therefore > unless you know for sure that Android's implementation is > multithreaded, then don't cache the instance and use a local variable > that only lives in the method, don't use a field. This makes > SimpleDateFormat somewhat expansive to use but usually it is only used > for some UI work (i.e., not background work), therefore using it may > be OK for many apps. > > happy coding > serge > > On Mar 8, 4:33 am, TAKEphONE <shimo...@gmail.com> wrote: > > > Hi, > > > Is there any internal method/object I can use to return a format > > like the built-in call log does ? > > > (i.e. "5 minutes ago", "2 days ago"...) > > > On Mar 6, 2:55 pm, Tseng <tseng.priv...@googlemail.com> wrote: > > > > I wouldn't really use this method to be honest. Even the Android > > > Documentation sugest to use native methods, instead of writing your > > > own stuff for methods which are already available (i.e. simple date > > > formating). > > > > [Use Native > > > Methods]http://developer.android.com/guide/practices/design/performance.html#... > > > > On Mar 6, 1:20 pm, droozen <droozenr...@gmail.com> wrote: > > > > > Sometimes I construct my human readable strings in a separate function > > > > by myself, mostly because I imagine it's faster. Something like. > > > > > int iMonth = cal.get(Calendar.MONTH) + 1; // Months from the calendar > > > > are offset by one. Add one if you want human readable. > > > > int iDay = cal.get(Calendar.DAY_OF_MONTH); > > > > > String month = Integer.toString(iMonth); > > > > if(iMonth < 10){ > > > > month = "0" + month; // Otherwise, you might get something like > > > > 1/1/1900, instead of 01/01/1900 > > > > > } > > > > > String day = Integer.toString(iDay); > > > > if(iDay < 10){ > > > > day = "0" + day; > > > > > } > > > > > String humanReadable = month + "/" + day + "/" cal.get(Calendar.YEAR); > > > > > But really, you should be using SimpleDateFormat, I suppose... > > > > > On Mar 6, 5:55 am, Łukasz Warchoł <warchol...@gmail.com> wrote: > > > > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Beginners" group. To post to this group, send email to android-beginners@googlegroups.com To unsubscribe from this group, send email to android-beginners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~----------~----~----~----~------~----~------~--~---
