91 lines
4.0 KiB
Markdown
91 lines
4.0 KiB
Markdown
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Android WearHighBandwidthNetworking Sample
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===================================
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Sample demonstrates how to determine if a high-bandwidth network is available for use cases that
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require a minimum network bandwidth, such as streaming media or downloading large files. In
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addition, the sample demonstrates best practices for asking a user to add a new Wi-Fi network for
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high-bandwidth network operations if the bandwidth of currently available networks is inadequate.
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Introduction
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------------
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On Android Wear, a high-bandwidth network is not always available, as the platform manages network
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connectivity with the goal of providing the best overall user experience, balancing network
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bandwidth and maximizing device battery life. For use cases that require high-bandwidth network
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access, such as transporting large files or streaming media, we recommend that apps:
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1. Check for an active network, and if there is one, check its bandwidth.
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2. If there isn't an active network, or its bandwidth is insufficient, request access to an
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unmetered Wi-Fi or cellular network.
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3. If a high-bandwidth network is still not avaiable, ask the user to connect to a new Wi-Fi
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network.
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You can use the [ConnectivityManager][1] class to check if an active network exists, if the active
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network has sufficient bandwidth for the desired network operation, and to request an appropriate
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high-bandwidth network.
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In addition to requesting a high-bandwidth network, you should also ensure that you are releasing
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bound networks and cancelling any ongoing network requests when they are no longer needed.
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This sample demonstrates all aspects of testing, requesting, and releasing network resources to
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ensure a high-bandwidth network is available. In addition, the sample demonstrates the ideal user
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experience for guiding the user through the process of acquiring a high-bandwidth network.
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To try all aspects of this sample, ensure that you have removed all saved Wi-Fi networks from your
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Wear device and that it is unplugged, as Wear devices may prefer high-bandwidth networks by default
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while plugged-in. Also, you may wish to put your phone in airplane mode or turn off Bluetooth to
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simulate the Wear device running standalone.
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[1]: https://developer.android.com/reference/android/net/ConnectivityManager.html
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Pre-requisites
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--------------
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- Android SDK 27
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- Android Build Tools v27.0.2
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- Android Support Repository
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Screenshots
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-------------
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<img src="screenshots/wear-1.png" height="400" alt="Screenshot"/> <img src="screenshots/wear-2.png" height="400" alt="Screenshot"/> <img src="screenshots/wear-3.png" height="400" alt="Screenshot"/>
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Getting Started
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---------------
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This sample uses the Gradle build system. To build this project, use the
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"gradlew build" command or use "Import Project" in Android Studio.
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Support
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-------
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- Google+ Community: https://plus.google.com/communities/105153134372062985968
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- Stack Overflow: http://stackoverflow.com/questions/tagged/android
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If you've found an error in this sample, please file an issue:
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https://github.com/googlesamples/android-WearHighBandwidthNetworking
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Patches are encouraged, and may be submitted by forking this project and
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submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
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License
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-------
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Copyright 2017 The Android Open Source Project, Inc.
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Licensed to the Apache Software Foundation (ASF) under one or more contributor
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license agreements. See the NOTICE file distributed with this work for
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additional information regarding copyright ownership. The ASF licenses this
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file to you under the Apache License, Version 2.0 (the "License"); you may not
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use this file except in compliance with the License. You may obtain a copy of
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the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations under
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the License.
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