packages/SystemUI/res/anim/lockscreen_fingerprint_draw_on_ridge_6_path_animation.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2015 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
  -->
<set
    xmlns:android="http://schemas.android.com/apk/res/android" >
    <set
        android:ordering="sequentially" >
        <objectAnimator
            android:duration="50"
            android:propertyName="trimPathStart"
            android:valueFrom="1.0"
            android:valueTo="1.0"
            android:valueType="floatType"
            android:interpolator="@android:interpolator/linear" />
        <objectAnimator
            android:duration="549"
            android:propertyName="trimPathStart"
            android:valueFrom="1.0"
            android:valueTo="0.0"
            android:valueType="floatType"
            android:interpolator="@interpolator/lockscreen_fingerprint_draw_on_animation_interpolator_1" />
    </set>
</set>