最近同学张 发现指纹支付的时候按Home键 不退出应用 测试发现是这样子的
//home 键不退出 走这个错 alert.message=@"System cancelled authentication";
代码如下：
UIAlertView*alert = [[UIAlertViewalloc]initWithTitle:@""message:@""delegate:selfcancelButtonTitle:@"Okay"otherButtonTitles:nil,nil];
LAContext*myContext = [[LAContextalloc]init];
myContext.localizedFallbackTitle=@"ssssr";
NSError*authError =nil;
NSString*myLocalizedReasonString =@"Restricted Area!";
if([myContextcanEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometricserror:&authError]) {
[myContextevaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics
localizedReason:myLocalizedReasonString
reply:^(BOOLsuccess,NSError*error) {
if(success) {
// User authenticated successfully, take appropriate action
alert.title=@"Success";
alert.message=@"You have access to private content!";
[alertshow];
}else{
// User did not authenticate successfully, look at error and take appropriate action
alert.title=@"Fail";
switch(error.code) {
caseLAErrorUserCancel:
alert.message=@"Authentication Cancelled";
break;
caseLAErrorAuthenticationFailed:
alert.message=@"Authentication Failed";
break;
caseLAErrorPasscodeNotSet:
alert.message=@"Passcode is not set";
break;
caseLAErrorSystemCancel:
//home 键不退出 走这个错 alert.message=@"System cancelled authentication";
break;
caseLAErrorUserFallback:
alert.message=@"You chosed to try password";
break;
default:
alert.message=@"You cannot access to private content!";
break;
}
[alertshow];
}
}];
}else{
// Could not evaluate policy; look at authError and present an appropriate message to user
alert.title=@"Warning";
if(authError.code==LAErrorTouchIDNotEnrolled) {
alert.message=@"You do not have any fingerprints enrolled!";
}elseif(authError.code==LAErrorTouchIDNotAvailable) {
alert.message=@"Your device does not support TouchID authentication!";
}elseif(authError.code==LAErrorPasscodeNotSet){
alert.message=@"Your passcode has not been set";
}
[alertshow];
}
