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Editorial Team
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Asked: 2026-05-15T16:16:14+00:00

I am developing an iPhone application, I encounter a problem on the iOS4 because

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I am developing an iPhone application, I encounter a problem on the iOS4 because of multi task.

This application has the default settings defined in a Settings.bundle.
If I run my application then I left it (so it goes in the background).
I’ll change the settings and restarts the application (it comes out of standby and method: applicationDidBecomeActive () is called).

Values in NSUserDefault are not updates, but when I leave the application and relaunch. The values are good.

Does someone experience the same problem as me?
Is what I’m doing something wrong?

Thank you for your advice / help.

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1 Answer

  1. Editorial Team

    I had the same problem as you, and got around it by calling

    [[NSUserDefaults standardUserDefaults] synchronize];

    in applicationDidBecomeActive.

    For some reason the [NSUserDefaults standardUserDefaults] object you can access in your app isn’t synchronized with the actual plist files backing it when an app becomes active again after having been suspended. Calling the synchronize method forces a synchronization.

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