CustomFanController - Solution Code

Creates a circular fan control dial that offers multiple selections marked by numeric indicators: 0 for off, 1 for low, 2 for medium, and 3 for high.

Introduction

The app creates a circular UI element that resembles a physical fan control. It uses a custom view that extends View to draw a circular fan control dial with an indicator and text labels for the settings: 0 (off), 1 (low), 2 (medium), and 3 (high). When the user clicks the dial, it moves the dial indicator to the next selection, and changes the dial's color from gray to green for selections 1-3 (indicating that the fan power is on).

Pre-requisites

You need to know how to:

• Open, build, and run apps with Android Studio.
• Use the layout editor to create a user interface.
• Edit a layout in XML.
• Use touch, text, and click listeners in your code.

Getting Started

1. Download the code.
2. Open the code in Android Studio.
3. Run the app.

License

Copyright 2019 Google, Inc.

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you 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.