出现上述问题可能是因为在验证时没有正确处理结果回调。要解决这个问题，可以使用以下代码例子，判断回调结果，当用户按下返回键关闭前一个提示时，手动调用cancel()函数取消验证：

if (BiometricPrompt.AUTHENTICATION_RESULT_TYPE_ERROR == authenticationResult.getAuthenticationType( )) {
    biometricPrompt.cancelAuthentication( );
}

此外，还可以使用以下代码例子，将onAuthenticationError()函数用于取消出现上述问题的验证：

biometricPrompt = new BiometricPrompt.Builder(activity)
    .setTitle(title)
    .setNegativeButton(negativeButtonText, executor, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            authenticationCallback.onCancelled( );
            dialog.dismiss( );
        }
    })
    .build( );

biometricPrompt.authenticate(promptInfo, new BiometricPrompt.CryptoObject(yourCipher), executor, authenticationCallback);

private class AuthenticationCallback extends BiometricPrompt.AuthenticationCallback {
 
    @Override
    public void onAuthenticationError(int errorCode, @NonNull CharSequence errString) {
        super.onAuthenticationError(errorCode, errString);
        if (errorCode == BiometricPrompt.ERROR_USER_CANCELED) {
            onCancelled( );
        }
    }
 
    @Override
    public void onAuthenticationFailed() {
        super.onAuthenticationFailed( );
    }
 
    @Override
    public void onAuthenticationSucceeded(@NonNull BiometricPrompt.AuthenticationResult result) {
        super.onAuthenticationSucceeded(result);
        onSuccess( );
    }
 
    public void onSuccess( ) {
        //do something after authentication success
    }
     
    public void onCancelled( ) {
        //do something after authentication cancelled
    }
}