See Commit
Please use and
Mirror of https://android.googlesource.com/platform/frameworks/opt/datetimepicker with Gradle support
DatePicker and TimePicker from Google for Android 4.0+
If you want to support pre-ICS devices, you can checkout this.
compile 'com.github.citux:datetimepicker:0.3.0'
A Demo App can be found under demo.
The interesting part is in the Activity.
You can download the latest demo from here (demo.apk).
Google - For developing the library
Copyright 2014 Paul Stöhr
Copyright 2013 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.