How to Convert an ISO 8601 String to a Date/Time Object in Android?

Converting ISO 8601 String to Date/Time in Android

In Android, working with date and time values can be a common task when dealing with data from web services or databases. ISO 8601 is a widely used standard for representing date and time, and Android provides a convenient way to parse ISO 8601 strings into Date or Time objects.

Step 1: Create a SimpleDateFormat Object

To parse an ISO 8601 string into a Date or Time object, you first need to create a SimpleDateFormat object. The format string used with this object specifies the format of the ISO 8601 string you are parsing.

<code class="java">SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");</code>

The format string in the above example matches the commonly used ISO 8601 format, where YYYY represents the year, MM represents the month, dd represents the day, HH represents the hour, mm represents the minute, ss represents the second, and Z represents the Zulu time zone (UTC).

Step 2: Parse the ISO 8601 String

Once you have created a SimpleDateFormat object, you can use it to parse your ISO 8601 string into a Date or Time object.

<code class="java">String dtStart = "2010-10-15T09:27:37Z";
try {
    Date date = format.parse(dtStart);
    System.out.println(date);
} catch (ParseException e) {
    e.printStackTrace();
}</code>

In this code:

• dtStart is the ISO 8601 string being parsed.
• format is the SimpleDateFormat object used for parsing.
• date is the resulting Date object.

Step 3: Work with the Date/Time Object

Once you have parsed the ISO 8601 string into a Date or Time object, you can use it to manipulate and display date and time values as needed.

• You can use the toString() method to get a string representation of the date/time object.
• You can use the various get() methods to access specific date/time components, such as year, month, day, hour, minute, and second.
• You can use the set() methods to modify date/time components.

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