IOS Get Verification Code Countdown effect _ios

The example of this article for everyone to share the iOS countdown to obtain the code of the specific codes for your reference, the specific contents are as follows

1. The countdown sends the verification code, the interface jumps the timing will reset

/** time to resend SMS/(void) firetimer{__block int timeout=180;//countdown times dispatch_queue_t queue = Dispatch_get_global_queue (DI

 Spatch_queue_priority_default, 0);

 dispatch_source_t _timer = dispatch_source_create (dispatch_source_type_timer, 0, 0,queue); Dispatch_source_set_timer (_timer,dispatch_walltime (NULL, 0), 1.0*nsec_per_sec, 0);
   Execute Dispatch_source_set_event_handler per second (_timer, ^{if (timeout<=0) {//Countdown end, Close Dispatch_source_cancel (_timer); Dispatch_async (Dispatch_get_main_queue (), ^{//SET interface button to display according to their own needs settings [_changecodebutton settitle:@ "Get Authentication Code" forstate:
    UIControlStateNormal];
   _changecodebutton.userinteractionenabled = YES;
  });
   }else{int seconds = timeout;//% 60;
   NSString *strtime = [NSString stringwithformat:@ "%.2d", seconds];
    Dispatch_async (Dispatch_get_main_queue (), ^{/SET interface button to display according to their own needs set//nslog (@ "____%@", strtime);
    [UIView Beginanimations:nil Context:nil];
    [UIView Setanimationduration:1]; _changecodebutton.titlelabel.font =[Uifont systemfontofsize:14];
    [_changecodebutton settitle:[nsstring stringwithformat:@ "(%@s) to regain", Strtime] forstate:uicontrolstatenormal];
    [UIView commitanimations];
   _changecodebutton.userinteractionenabled = NO;
   });
  timeout--;
 }
 });
Dispatch_resume (_timer);

 }

The above method is a long time ago transferred from a certain blogger, because can not find the address, but very useful so for the moment included here, forgive me.

2. The countdown sends the verification code, the interface jumps after timing does not reset

has not been sorted out, continue to update the

First to share other cases: iOS implementation of verification code countdown function (i), iOS implementation Verification Code countdown function (ii)

The above is the entire content of this article, I hope to help you learn, but also hope that we support the cloud habitat community.