SystemUI 密码解锁后指纹识别清除次数

不积跬步无以至千里

之前也是比较发闷儿,密码解锁后清楚指纹识别的次数是在哪里处理的,今天正好查找一个问题正好发现,记录下来

1.调用密码验证流程

代码路径:frameworks/base/services/core/java/com/android/server/locksettings/LockSettingsService.java

/**
     * Verify user credential and unlock the user. Fix pattern bug by deprecating the old base zero
     * format.
     */
    private VerifyCredentialResponse doVerifyCredential(String credential, int credentialType,
            boolean hasChallenge, long challenge, int userId,
            ICheckCredentialProgressCallback progressCallback) throws RemoteException {
        if (TextUtils.isEmpty(credential)) {
            throw new IllegalArgumentException("Credential can't be null or empty");
        }
        ...
        response = verifyCredential(userId, storedHash, credentialToVerify,
                hasChallenge, challenge, progressCallback);

        if (response.getResponseCode() == VerifyCredent