Utils.java
/*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.biometric;
import androidx.annotation.Nullable;
import androidx.annotation.RestrictTo;
import androidx.fragment.app.FragmentActivity;
/**
* @hide
*/
@RestrictTo(RestrictTo.Scope.LIBRARY)
public class Utils {
/**
* @param errMsgId
* @return true if the error is not publicly defined
*/
public static boolean isUnknownError(int errMsgId) {
switch (errMsgId) {
case BiometricPrompt.ERROR_HW_UNAVAILABLE:
case BiometricPrompt.ERROR_UNABLE_TO_PROCESS:
case BiometricPrompt.ERROR_TIMEOUT:
case BiometricPrompt.ERROR_NO_SPACE:
case BiometricPrompt.ERROR_CANCELED:
case BiometricPrompt.ERROR_LOCKOUT:
case BiometricPrompt.ERROR_VENDOR:
case BiometricPrompt.ERROR_LOCKOUT_PERMANENT:
case BiometricPrompt.ERROR_USER_CANCELED:
case BiometricPrompt.ERROR_NO_BIOMETRICS:
case BiometricPrompt.ERROR_HW_NOT_PRESENT:
case BiometricPrompt.ERROR_NEGATIVE_BUTTON:
case BiometricPrompt.ERROR_NO_DEVICE_CREDENTIAL:
return false;
default:
return true;
}
}
/**
* Finishes a given activity if and only if it's a {@link DeviceCredentialHandlerActivity}.
* @param activity The activity to finish.
*/
public static void maybeFinishHandler(@Nullable FragmentActivity activity) {
if (activity instanceof DeviceCredentialHandlerActivity && !activity.isFinishing()) {
activity.finish();
}
}
}