SyncAdapter Poll Frequency

Question

I've implemented SyncAdapter, with sync frequency as 10 seconds. But while running the application, this sync frequency is automatically updated to 900 seconds.

Account Creation code:

public static void createSyncAccount(Context c) {
        boolean created = false;

        Account account = getAccount();
        AccountManager manager = (AccountManager)c.getSystemService(Context.ACCOUNT_SERVICE);

        if (manager != null && manager.addAccountExplicitly(account, null, null)) {
            final String AUTHORITY = UserIntakeContract.CONTENT_AUTHORITY;
            final long SYNC_FREQUENCY = 10; // (seconds)

            ContentResolver.setIsSyncable(account, AUTHORITY, 1);
            ContentResolver.setSyncAutomatically(account, AUTHORITY, true);
            ContentResolver.addPeriodicSync(account, AUTHORITY, new Bundle(), SYNC_FREQUENCY);
            created = true;
        }

        if (created) {
            SyncAdapter.performSync();
        }
    }

Log Trace:

03-13 10:00:16.902 18073-18094/system_process W/ContentService: 
Requested poll frequency of 10 seconds being rounded up to 900s.

But I'm not able to find any resource or documentation stating minimum poll frequency as 15 minutes (900 seconds).

Can anyone provide some authentic resource or documentation or explanation?

score 0 · Answer 1 · edited Mar 14 '18 at 07:30

0

Did you check the documentation of "ContentResolver.addPeriodicSync". There is poll frequency documentation with the description: long: how frequently the sync should be performed, in seconds. A minimum value of 1 hour is enforced. Maybe due to this enforcement this change is happening.

edited Mar 14 '18 at 07:30

Ram Koti

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answered Mar 14 '18 at 06:02

Qandil Tariq

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Yes, but it stated minimum value of 1 hour. But in my case its 15 minutes. – Gokul Nath KP Mar 14 '18 at 06:04
It seems that on Android 7 and 8 the minimum frequency is 15 min. Till Android 6 we had a round up to 60 sec, which is decent. – Qandil Tariq Mar 14 '18 at 06:06
https://stackoverflow.com/questions/31945718/contentresolver-addperiodicsync-interval-round-up You can check the last answer of this post. – Qandil Tariq Mar 14 '18 at 06:07

score 0 · Answer 2 · answered Mar 14 '18 at 06:12

Looks like you are trying to set time period beyond limit.

After looking at source:

https://android.googlesource.com/platform/frameworks/base/+/b267554/services/java/com/android/server/content/ContentService.java#415

Minimum time period that can be set varies from version to version.

SyncAdapter Poll Frequency

2 Answers2