ios - In App Purchase - No purchase to restore -


i'm trying figure out if message when user tries restore in app purchase there no purchase ever made.

right now, user taps restorebutton, disable restorebutton. 

- (ibaction)purchaserestore:(id)sender {     nslog(@"4 ibaction purchase restore method: start");     [[skpaymentqueue defaultqueue] addtransactionobserver:self];     [[skpaymentqueue defaultqueue]restorecompletedtransactions];     nslog(@"4 purchase restore: skpayment queue 2 lines... log in user");     restorebutton.enabled = no;     nslog(@"4 restore button enabled: no"); }

so if click restorebutton, , have nothing restore restorebutton stays grayed out.

i uialert or change restorebutton text if happens "you don't have items restore", assume need message apple saying "no items restore" can fire off code.

here's updatedtransactions code if needed:

case skpaymenttransactionstaterestored:                  [[skpaymentqueue defaultqueue] finishtransaction:transaction];                 nslog(@"5 finish transaction");                  restorebutton.hidden = yes;                 nslog(@"5 restore button hidden: yes");                  [self showbuttonthree];                 nslog(@"5 show button three");                  nslog(@"5 restored: end");                  break;

any ideas? thanks!

update

tried this:

- (void)paymentqueuerestorecompletedtransactionsfinished:(skpaymentqueue *)queue {     nslog(@"completed transactions finished");     uialertview *alertview = [[uialertview alloc]initwithtitle:                               @"restored succesfully" message:nil delegate:                               self cancelbuttontitle:@"ok" otherbuttontitles: nil];     [alertview show]; }

but popping whether there transaction restore or not. had assumed called if there no transaction restore maybe, makes sense wouldn't:

-(void)paymentqueue:(skpaymentqueue *)queue restorecompletedtransactionsfailedwitherror:(nserror *)error {     nslog(@"completed transactions failed error");     uialertview *alertview = [[uialertview alloc]initwithtitle:                               @"not restored succesfully" message:nil delegate:                               self cancelbuttontitle:@"ok" otherbuttontitles: nil];     [alertview show]; }

from official apple documentation restorecompletedtransactions

after transactions delivered, payment queue calls observer’s paymentqueuerestorecompletedtransactionsfinished: method. if error occurred while restoring transactions, observer notified through paymentqueue:restorecompletedtransactionsfailedwitherror: method.


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