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Editorial Team
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Asked: 2026-05-22T15:59:03+00:00

android.text.format.DateFormat specifies that using the format string ‘a’ should yield ‘a’ or ‘p’ and

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android.text.format.DateFormat specifies that using the format string ‘a’ should yield ‘a’ or ‘p’ and ‘aa’ should yield ‘am’ or ‘pm’. However, on my AVD, using ‘a’, ‘A’, or ‘AA’ yields ‘am’ or ‘pm’ which is not congruent with the on-line documentation.

final long currentTimeMillis = System.currentTimeMillis();

Log.i("DateFormat", "a: " + (String) DateFormat.format("a", currentTimeMillis));
Log.i("DateFormat", "aa: " + (String) DateFormat.format("aa", currentTimeMillis));
Log.i("DateFormat", "A: " + (String) DateFormat.format("A", currentTimeMillis));
Log.i("DateFormat", "AA: " + (String) DateFormat.format("AA", currentTimeMillis));

Since DateFormat has been available since API Level 3, am I running into a regression or is there something wrong with my development environment? (I’m new to android so I don’t have much experience with this framework yet). AVD is configured for API Level 8 and I’m using Eclipse.

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1 Answer

  1. Editorial Team

    Finally got around to looking at the source code and as far as I can tell, these formatting options were never implemented correctly. Only 2 possible localized strings are retrieved and they are not manipulated any further, which is what I’m observing.

    I’ve filed a bug: http://code.google.com/p/android/issues/detail?id=16997

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