packages/SystemUI/res/drawable/ic_sysbar_rotate_button.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
     Copyright (C) 2017 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.
-->
<animated-vector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:aapt="http://schemas.android.com/aapt">
    <aapt:attr name="android:drawable">
        <vector android:name="root"
                android:width="24dp"
                android:height="24dp"
                android:viewportWidth="24.0"
                android:viewportHeight="24.0">
            <group android:name="icon" android:pivotX="12" android:pivotY="12">
                <!-- Tint color to be set directly -->
                <path android:fillColor="#FFFFFFFF"
                      android:pathData="M17,1.01L7,1c-1.1,0 -2,0.9 -2,2v18c0,1.1 0.9,2 2,2h10c1.1,0 2,-0.9 2,-2V3c0,-1.1 -0.9,-1.99 -2,-1.99zM17,19H7V5h10v14z"/>
            </group>
        </vector>
    </aapt:attr>

    <!-- Repeat all animations 3 times but don't fade out at the end -->
    <target android:name="root">
        <aapt:attr name="android:animation">
            <set android:ordering="sequentially">
                <!-- Linear fade in-->
                <objectAnimator android:propertyName="alpha"
                                android:duration="100"
                                android:valueFrom="0"
                                android:valueTo="1"
                                android:interpolator="@android:anim/linear_interpolator" />
                <!-- Linear fade out -->
                <objectAnimator android:propertyName="alpha"
                                android:duration="100"
                                android:startOffset="1700"
                                android:valueFrom="1"
                                android:valueTo="0"
                                android:interpolator="@android:anim/linear_interpolator"/>
                <!-- Linear fade in-->
                <objectAnimator android:propertyName="alpha"
                                android:duration="100"
                                android:startOffset="100"
                                android:valueFrom="0"
                                android:valueTo="1"
                                android:interpolator="@android:anim/linear_interpolator" />
                <!-- Linear fade out -->
                <objectAnimator android:propertyName="alpha"
                                android:duration="100"
                                android:startOffset="1700"
                                android:valueFrom="1"
                                android:valueTo="0"
                                android:interpolator="@android:anim/linear_interpolator"/>
                <!-- Linear fade in-->
                <objectAnimator android:propertyName="alpha"
                                android:duration="100"
                                android:startOffset="100"
                                android:valueFrom="0"
                                android:valueTo="1"
                                android:interpolator="@android:anim/linear_interpolator" />
            </set>
        </aapt:attr>
    </target>
    <target android:name="icon">
        <aapt:attr name="android:animation">
            <set android:ordering="sequentially">
                <!-- Icon rotation with start timing offset after fade in -->
                <objectAnimator android:propertyName="rotation"
                                android:startOffset="100"
                                android:duration="600"
                                android:valueFrom="?attr/rotateButtonStartAngle"
                                android:valueTo="?attr/rotateButtonEndAngle">
                    <aapt:attr name="android:interpolator">
                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
                    </aapt:attr>
                </objectAnimator>

                <!-- Reset rotation position for fade in -->
                <objectAnimator android:propertyName="rotation"
                                android:startOffset="1300"
                                android:duration="100"
                                android:valueFrom="?attr/rotateButtonStartAngle"
                                android:valueTo="?attr/rotateButtonStartAngle"/>

                <!-- Icon rotation with start timing offset after fade in -->
                <objectAnimator android:propertyName="rotation"
                                android:duration="600"
                                android:valueFrom="?attr/rotateButtonStartAngle"
                                android:valueTo="?attr/rotateButtonEndAngle">
                    <aapt:attr name="android:interpolator">
                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
                    </aapt:attr>
                </objectAnimator>

                <!-- Reset rotation position for fade in -->
                <objectAnimator android:propertyName="rotation"
                                android:startOffset="1300"
                                android:duration="100"
                                android:valueFrom="?attr/rotateButtonStartAngle"
                                android:valueTo="?attr/rotateButtonStartAngle"/>

                <!-- Icon rotation with start timing offset after fade in -->
                <objectAnimator android:propertyName="rotation"
                                android:duration="600"
                                android:valueFrom="?attr/rotateButtonStartAngle"
                                android:valueTo="?attr/rotateButtonEndAngle">
                    <aapt:attr name="android:interpolator">
                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
                    </aapt:attr>
                </objectAnimator>
            </set>
        </aapt:attr>
    </target>
</animated-vector>