Dropbox iOS SDK always returns 'YES' for isLinked:

99封情书 提交于 2019-12-04 03:49:28

Sometime in mid-2012 (can't find the iOS SDK version log) the Dropbox iOS SDK behaviour changed to retain 'link' status through uninstall/reinstall of an app (even on device). As a result, apps that perform some action on receiving the 'linked' callback (like mine) would not work after a reinstall.

One solution is to unlink on first-run. Something like so:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    if ([[NSUserDefaults standardUserDefaults] objectForKey:HAS_RUN_KEY] == nil)
    {
        // ensure you have a DBSession to unlink
        if ([DBSession sharedSession] == nil)
        {
            DBSession* dbSession = [[[DBSession alloc] initWithAppKey:DROPBOX_KEY appSecret:DROPBOX_SECRET root:kDBRootAppFolder] autorelease];
            [DBSession setSharedSession:dbSession];
        }

        // unlink
        [[DBSession sharedSession] unlinkAll];

        // set 'has run' flag
        [[NSUserDefaults standardUserDefaults] setBool:YES forKey:HAS_RUN_KEY];
        [[NSUserDefaults standardUserDefaults] synchronize];
    }
}
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