How can I get current date in Android?

问题

I wrote the following code

Date d = new Date();
CharSequence s  = DateFormat.format(\"MMMM d, yyyy \", d.getTime());

But is asking me parameter, I want current date in string format,

28-Dec-2011

so that I can set over TextView,

explain a bit, if you think something is necessary, I am new to Android Development.

回答1:

You can use the SimpleDateFormat class for formatting date in your desired format.

Just check this link where you get an idea for your example.

For example:

String dateStr = "04/05/2010"; 

SimpleDateFormat curFormater = new SimpleDateFormat("dd/MM/yyyy"); 
Date dateObj = curFormater.parse(dateStr); 
SimpleDateFormat postFormater = new SimpleDateFormat("MMMM dd, yyyy"); 

String newDateStr = postFormater.format(dateObj);

Update:

The detailed example is here, I would suggest you go through this example and understand the concept of SimpleDateFormat class.

Final Solution:

Date c = Calendar.getInstance().getTime();
System.out.println("Current time => " + c);

SimpleDateFormat df = new SimpleDateFormat("dd-MMM-yyyy");
String formattedDate = df.format(c);

回答2:

Its simple one line code for get current Date in this yyyy-MM-dd format you can use your format that you want :

String date = new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault()).format(new Date());

回答3:

This is nothing to do with android as it is java based so you could use

private String getDateTime() { 
   DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
   Date date = new Date(); 
   return dateFormat.format(date); 
}

回答4:

 public String giveDate() {
    Calendar cal = Calendar.getInstance();
    SimpleDateFormat sdf = new SimpleDateFormat("EEE, MMM d, yyyy");
    return sdf.format(cal.getTime());
 }

回答5:

try this,

SimpleDateFormat timeStampFormat = new SimpleDateFormat("yyyyMMddHHmmssSS");
Date myDate = new Date();
String filename = timeStampFormat.format(myDate);

回答6:

CharSequence s  = DateFormat.getDateInstance().format("MMMM d, yyyy ");

You need an instance first

回答7:

Works like a charm and converts to String as a bonus ;)

SimpleDateFormat currentDate = new SimpleDateFormat("dd/MM/yyyy");
      Date todayDate = new Date();
    String thisDate = currentDate.format(todayDate);

回答8:

 String date = new SimpleDateFormat("yyyy-MM-dd").format(new Date());

// import Date class as java.util

回答9:

The below code displays the both time and date

Calendar cal = Calendar.getInstance();
cal.getTime().toString();

回答10:

SimpleDateFormat df = new SimpleDateFormat("dd-MMM-yyyy");
String date = df.format(Calendar.getInstance().getTime());

回答11:

Calendar cal = Calendar.getInstance();      
Calendar dt = Calendar.getInstance(); 
dt.clear();
dt.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH),cal.get(Calendar.DATE)); 
return dt.getTime();

回答12:

A simple tweak to Paresh's solution:

Date date = Calendar.getInstance().getTime();
SimpleDateFormat df = new SimpleDateFormat("dd-MMM-yyyy");
String formattedDate = df.format(date);

回答13:

You can use following code to get a date in the format you want.

String date = String.valueOf(android.text.format.DateFormat.format("dd-MM-yyyy", new java.util.Date()));

回答14:

I am providing the modern answer.

java.time and ThreeTenABP

To get the current date:

    LocalDate today = LocalDate.now(ZoneId.of("America/Hermosillo"));

This gives you a LocalDate object, which is what you should use for keeping a date in your program. A LocalDate is a date without time of day.

Only when you need to display the date to a user, format it into a string suitable for the user’s locale:

    DateTimeFormatter userFormatter
            = DateTimeFormatter.ofLocalizedDate(FormatStyle.LONG);
    System.out.println(today.format(userFormatter));

When I ran this snippet today in US English locale, output was:

July 13, 2019

If you want it shorter, specify FormatStyle.MEDIUM or even FormatStyle.SHORT. DateTimeFormatter.ofLocalizedDate uses the default formatting locale, so the point is that it will give output suitable for that locale, different for different locales.

If your user has very special requirements for the output format, use a format pattern string:

    DateTimeFormatter userFormatter = DateTimeFormatter.ofPattern(
            "d-MMM-u", Locale.forLanguageTag("ar-AE"));

13-يول-2019

I am using and recommending java.time, the modern Java date and time API. DateFormat, SimpleDateFormat, Date and Calendar used in the question and/or many of the other answers, are poorly designed and long outdated. And java.time is so much nicer to work with.

Question: Can I use java.time on Android?

Yes, java.time works nicely on older and newer Android devices. It just requires at least Java 6.

In Java 8 and later and on newer Android devices (from API level 26) the modern API comes built-in.
In Java 6 and 7 get the ThreeTen Backport, the backport of the modern classes (ThreeTen for JSR 310; see the links at the bottom).
On (older) Android use the Android edition of ThreeTen Backport. It’s called ThreeTenABP. And make sure you import the date and time classes from org.threeten.bp with subpackages.

Links

Oracle tutorial: Date Time explaining how to use java.time.
Java Specification Request (JSR) 310, where java.time was first described.
ThreeTen Backport project, the backport of java.time to Java 6 and 7 (ThreeTen for JSR-310).
ThreeTenABP, Android edition of ThreeTen Backport
Question: How to use ThreeTenABP in Android Project, with a very thorough explanation.

回答15:

Date c = Calendar.getInstance().getTime();
System.out.println("Current time => " + c);

SimpleDateFormat df = new SimpleDateFormat("dd-MMM-yyyy");
String formattedDate = df.format(c);

This one is the best answer...

回答16:

Calendar c = Calendar.getInstance();
int day = c.get(Calendar.DAY_OF_MONTH);
int month = c.get(Calendar.MONTH);
int year = c.get(Calendar.YEAR);
String date = day + "/" + (month + 1) + "/" + year;

Log.i("TAG", "--->" + date);

回答17:

 public static String getcurrentDateAndTime(){

        Date c = Calendar.getInstance().getTime();
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy/MM/dd");
        String formattedDate = simpleDateFormat.format(c);
        return formattedDate;
    }

// String currentdate=  getcurrentDateAndTime();

回答18:

The simplest way to get the current date in current locale (device locale!) :

String currentDate = DateFormat.getDateInstance().format(Calendar.getInstance().getTime());

If you want to have the date in different styles use getDateInstance(int style):

DateFormat.getDateInstance(DateFormat.FULL).format(Calendar.getInstance().getTime());

Other styles: DateFormat.LONG, DateFormat.DATE_FIELD, DateFormat.DAY_OF_YEAR_FIELD, etc. (use CTRL+Space to see all of them)

If you need the time too:

String currentDateTime = DateFormat.getDateTimeInstance(DateFormat.DEFAULT,DateFormat.LONG).format(Calendar.getInstance().getTime());

回答19:

  public static String getDateTime() {
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("MMMM dd, yyyy HH:mm:ss", Locale.getDefault());
        Date date = new Date();
        return simpleDateFormat.format(date);
    }

回答20:

try with this link of code this is absolute correct answer for all cases all over date and time. or customize date and time as per need and requirement of app.

try with this link .try with this link

回答21:

I wrote calendar app using CalendarView and it's my code:

CalendarView cal = (CalendarView) findViewById(R.id.calendar);
cal.setDate(new Date().getTime());

'calendar' field is my CalendarView. Imports:

import android.widget.CalendarView;
import java.util.Date;

I've got current date without errors.

回答22:

This is the code i used:

             Date date = new Date();  // to get the date
             SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy"); // getting date in this format
             String formattedDate = df.format(date.getTime());
             text.setText(formattedDate);

回答23:

I've already used this:

Date What_Is_Today=Calendar.getInstance().getTime();
SimpleDateFormat Dateformat = new SimpleDateFormat("dd-MM-yyyy");
String Today=Dateformatf.format(What_Is_Today);

Toast.makeText(this,Today,Toast.LENGTH_LONG).show();

at first I get time, then I declared a Simple Date Format (to get date like: 19-6-2018) then I use format to change date to string.

回答24:

This is the code I used:

final Calendar c = Calendar.getInstance();
year = c.get(Calendar.YEAR);
month = c.get(Calendar.MONTH);
day = c.get(Calendar.DAY_OF_MONTH);

// Set current date into textview
tvDisplayDate.setText(new StringBuilder()
    .append(month + 1).append("-") // Month is 0 based, add 1
    .append(day).append("-")
    .append(year).append("   Today is :" + thursday ) );

// Set current date into datepicker
dpResult.init(year, month, day, null);

来源：https://stackoverflow.com/questions/8654990/how-can-i-get-current-date-in-android

标签

android

date

simpledateformat

android-date