android-date

问题 Im trying to convert a timestamp to a human readable date and time. I tried: String dateSt = 1386580621268; Log.i("*****", "date st is = "+dateSt); long unixSeconds = Long.parseLong(dateSt); Log.i("*******", "unix seconds is = "+unixSeconds); Date date = new Date(unixSeconds*1000L); // *1000 is to convert seconds to milliseconds SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy"); // the format of your date String formattedDate = sdf.format(date); System.out.println(formattedDate); The

问题 I am using date converter class to convert my date object. However, I still encounter an error saying. error: Cannot figure out how to save this field into a database. You can consider adding a type converter for it. My Date Converter class public class DateConverter { @TypeConverter public static Date toDate(Long dateLong){ return dateLong == null ? null: new Date(dateLong); } @TypeConverter public static long fromDate(Date date){ return date == null ? null :date.getTime(); } } My Database

问题 I know this question has been asked many times but i am unable to find the right direction. I have registered BroadcastReceiver which I want to trigger when the Android System Date is changed automatically but its not firing. I have used the following approaches: 1 IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(Intent.ACTION_TIME_CHANGED); registerReceiver(new DateTimeChangeReceiver (), intentFilter); 2-> AndroidManifest.xml <receiver android:name="

问题 When I click edittext, date picker dialog opens. without clicking done button in date picker and clicked outside of dialog, it sets in edittext. I checked this but this works for first time. When selecting second time by choosing dialog and without clicking done button, it fails. private final DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() { private boolean fired; public void resetFired(){ fired = false; } @Override public void onDateSet

问题 I have java util date as Thu Feb 28 15:35:00 GMT+00:00 2013 How to convert it to HH:MM . I am trying to do this via below snippet: SimpleDateFormat formatter = new SimpleDateFormat("HH:MM"); formatter.setTimeZone(TimeZone.getTimeZone("GMT")); return formatter.format(objDate); Its giving right result for dd mmm but always giving minutes as 02 for HH:MM Please suggest me what is wrong in this function? 回答1: MM is the month value in SimpleDateFormat . You want mm . Note that using HH will give

问题 In various Android projects, I use the following static function to parse dates such as 1900-12-31 . Of course, this function should be deterministic - but it turns out it is not. Why? Normally, it parses the date 2010-10-30 , for example, to the correct Date instance holding that value. But I have noticed that when I have an IntentService running at the same time and parsing some dates, this function parses the same date as above to 1983-01-20 , which is one of the dates parsed in the

问题 in my Android application, i am taking date and time from database. but i am not able to get the date in the "Date" Format from the database into my application, the date is in string format, so i am not able to compare the system date to database date. if i convert the system date into string then i am not able to update the date into the database in recurring case. i also want to update the database date if the system date and database date is matched. how can i achieve this is android.

问题 I am working on a chat application but I am struggling to figure out how to display the calendar date on the top of chat messages; for example, something like this: Another image with timestamps: As you see in the example, the date is displayed on top of a fresh new batch of text messages. I would like to do the same, just for a batch of messages related to a specific date. Say if I have messages for October 19, it shows October 19 on top followed by messages for October 20 and so on... Here

问题 My application is time dependent and I don't want change in device date and time affect my application, like if user deliberately set device date to any previous date . Is there any way to get current date and time when user is connected to mobile network or WiFi I don't want to use GPS. 回答1: Javadoc of the SystemClock class describe different ways of counting elapsed time for various scenarios and conditions. In your case you have to use long time = SystemClock.elapsedRealtime(); Return the

问题 I am just plugging and playing with a sample code to get a hang of chatting/messaging apps. I am using a function gettimedate such that, in my model class I have the following: private volatile long mTimedate; public myclass(....,DateType date,...){ mTimedate = date != null ? date.time : new Date().getTime(); } public final long getTimedate() { return mTimedate; } public int hashCode() { if (mId != null) { return mId.hashCode(); } int hash = mBody == null ? 0 : mBody.hashCode(); return 31 *