LAContext showing pop up every times - ios

Question

- (void)touchIdIntegration{
LAContext *myContext = [[LAContext alloc] init];
NSError *authError = nil;
if ([myContext canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&authError]) {
[myContext evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics
localizedReason:#"Authenticate via Touch ID to unlock the app"
reply:^(BOOL success, NSError *error) {
if (success) {
dispatch_async(dispatch_get_main_queue(), ^{
[[AppManager instance].helpManager setDontShowInterstialAd:TRUE];
[[AppManager instance].cycleManager setUserAuthenticated:TRUE];
[self.delegate showAlertViewsOnServerData];
});
} else {
dispatch_async(dispatch_get_main_queue(), ^{
switch (error.code) {
case kLAErrorAuthenticationFailed:
NSLog(#"kLAErrorAuthenticationFailed");
break;
case kLAErrorTouchIDNotEnrolled:
NSLog(#"kLAErrorTouchIDNotEnrolled");
break;
case LAErrorPasscodeNotSet:
NSLog(#"LAError code ");
break;
default:
break;
}
});
}
}];
} else {
dispatch_async(dispatch_get_main_queue(), ^{
self.m_imgFingerPrint.hidden = YES;
NSLog(#"LAError code %ld",authError.code);
NSString *alertMessage =nil;
switch (authError.code) {
case kLAErrorAuthenticationFailed:
{
alertMessage = #"kLAErrorAuthenticationFailed" ;
}
break;
case kLAErrorTouchIDNotEnrolled:
alertMessage = #"kLAErrorTouchIDNotEnrolled" ;
break;
case LAErrorPasscodeNotSet:
alertMessage = #"LAErrorPasscodeNotSet" ;
break;
default:
break;
}
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Error"
message:alertMessage
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil, nil];
[alertView show];
});
}
}
I don't want this pop up each every time when user moves to this screen.Is it possible or not ?Please let me know.
please find the screen shot below:
Anyways thanks in advance.

Answer 1

Don't write this code viewDidLoad or viewDidAppear. Write it only when it is absolutely required to ask for touchID.