LAContext *myContext = [[LAContext alloc] init];
// 這個屬性是設(shè)置指紋輸入失敗之后的彈出框的選項
myContext.localizedFallbackTitle = @"忘記密碼";
NSError *authError = nil;
NSString *myLocalizedReasonString = @"請按住Home鍵完成驗證";
// MARK: 判斷設(shè)備是否支持指紋識別
if (![myContext canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&authError])
{
[myContext evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:myLocalizedReasonString reply:^(BOOL success, NSError * _Nullable error) {
if(success)
{
NSLog(@"指紋認(rèn)證成功");
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"驗證結(jié)果" message:@"指紋認(rèn)證成功" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
}
else
{
NSLog(@"指紋認(rèn)證失敗，%@",error.description);
NSLog(@"%ld", (long)error.code); // 錯誤碼 error.code
switch (error.code)
{
case LAErrorAuthenticationFailed: // Authentication was not successful, because user failed to provide valid credentials
{
NSLog(@"授權(quán)失敗"); // -1 連續(xù)三次指紋識別錯誤
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"驗證結(jié)果" message:@"授權(quán)失敗" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
}
break;
case LAErrorUserCancel: // Authentication was canceled by user (e.g. tapped Cancel button)
{
NSLog(@"用戶取消驗證Touch ID"); // -2 在TouchID對話框中點擊了取消按鈕
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"驗證結(jié)果" message:@"用戶取消驗證" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
}
break;
case LAErrorUserFallback: // Authentication was canceled, because the user tapped the fallback button (Enter Password)
{
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
NSLog(@"用戶選擇輸入密碼，切換主線程處理"); // -3 在TouchID對話框中點擊了輸入密碼按鈕
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"驗證結(jié)果" message:@"用戶選擇輸入密碼，切換主線程處理" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
}];
}
break;
case LAErrorSystemCancel: // Authentication was canceled by system (e.g. another application went to foreground)
{
NSLog(@"取消授權(quán)，如其他應(yīng)用切入，用戶自主"); // -4 TouchID對話框被系統(tǒng)取消，例如按下Home或者電源鍵
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"驗證結(jié)果" message:@"取消授權(quán)，如其他應(yīng)用切入，用戶自主" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
}
break;
case LAErrorPasscodeNotSet: // Authentication could not start, because passcode is not set on the device.
{
NSLog(@"設(shè)備系統(tǒng)未設(shè)置密碼"); // -5
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"驗證結(jié)果" message:@"設(shè)備系統(tǒng)未設(shè)置密碼" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
}
break;
case LAErrorTouchIDNotAvailable: // Authentication could not start, because Touch ID is not available on the device
{
NSLog(@"設(shè)備未設(shè)置Touch ID"); // -6
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"驗證結(jié)果" message:@"設(shè)備未設(shè)置Touch ID" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
}
break;
case LAErrorTouchIDNotEnrolled: // Authentication could not start, because Touch ID has no enrolled fingers
{
NSLog(@"用戶未錄入指紋"); // -7
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"驗證結(jié)果" message:@"用戶未錄入指紋" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
}
break;
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_9_0
case LAErrorTouchIDLockout: //Authentication was not successful, because there were too many failed Touch ID attempts and Touch ID is now locked. Passcode is required to unlock Touch ID, e.g. evaluating LAPolicyDeviceOwnerAuthenticationWithBiometrics will ask for passcode as a prerequisite 用戶連續(xù)多次進行Touch ID驗證失敗，Touch ID被鎖，需要用戶輸入密碼解鎖，先Touch ID驗證密碼
{
NSLog(@"Touch ID被鎖，需要用戶輸入密碼解鎖"); // -8 連續(xù)五次指紋識別錯誤，TouchID功能被鎖定，下一次需要輸入系統(tǒng)密碼
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"驗證結(jié)果" message:@"Touch ID被鎖，需要用戶輸入密碼解鎖" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
}
break;
case LAErrorAppCancel: // Authentication was canceled by application (e.g. invalidate was called while authentication was in progress) 如突然來了電話，電話應(yīng)用進入前臺，APP被掛起啦");
{
NSLog(@"用戶不能控制情況下APP被掛起"); // -9
}
break;
case LAErrorInvalidContext: // LAContext passed to this call has been previously invalidated.
{
NSLog(@"LAContext傳遞給這個調(diào)用之前已經(jīng)失效"); // -10
}
break;
#else
#endif
default:
{
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
NSLog(@"其他情況，切換主線程處理");
}];
break;
}
}
}
}];
}
else
{
NSLog(@"設(shè)備不支持指紋");
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"驗證結(jié)果" message:@"設(shè)備不支持指紋" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
NSLog(@"%ld", (long)authError.code);
switch (authError.code)
{
case LAErrorTouchIDNotEnrolled:
{
NSLog(@"Authentication could not start, because Touch ID has no enrolled fingers");
break;
}
case LAErrorPasscodeNotSet:
{
NSLog(@"Authentication could not start, because passcode is not set on the device");
break;
}
default:
{
NSLog(@"TouchID not available");
break;
}
}
}
指紋解鎖主要代碼
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平臺聲明：文章內(nèi)容（如有圖片或視頻亦包括在內(nèi)）由作者上傳并發(fā)布，文章內(nèi)容僅代表作者本人觀點，簡書系信息發(fā)布平臺，僅提供信息存儲服務(wù)。
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