android studio development essentials 2015

The AndroidManifest file in the project explorer If we use sensors in an Android project, we have to get the required permissions to use these sensors in the AndroidManifest.xml file which is located in the manifests folder as shown below:įigure 3.2. The name of the image is compass.png, we’ll use its name to access it in our code. Please copy and paste this image to your drawable folder as a resource file to use as a UI component. You can of course use any other image you like in your project. I found the royalty free image shown in Figure 3.1 for this aim (I chose this one because it looks sort of ancient like an ancient compass). We’ll need a compass image whose needle shows the absolute north. I named the project as Compass App and selected Empty Activity as the default activity type. Let’s start by creating an Android project first in Android Studio. Android Studio Installed with SDK and Emulator.JRE (Java runtime environment) installed.Minimum 8GB of RAM and Enough storage to hold all the data.2.0 List of Materials and Equipment Needed In the end, we’ll have a complete compass app that we can use in daily life. Most Android devices have an accelerometer and a magnetometer sensor inside therefore using a compass app only requires software rather than additional hardware.Īs we develop our compass app, we’ll learn setting permissions to use sensors, reading acceleration and magnetic field data in Java code, extracting the orientation data from the sensor data and animating images.

Accelerometer is a sensor which converts the mechanical acceleration information to electrical signals and similarly a magnetometer is used to translate the magnetic field intensity to electronic signals. We’ll develop a simple compass app that will utilize the internal accelerometer and magnetometer sensors of the Android device. This user manual was created as a class project in ENG2575, OL88, Spring 2021.Ģ.0 List of Materials and Equipment NeededĨ.0 References 1.0 Introduction and Purpose 3.0 Setting up the Required Permissions.2.0 List of Materials and Equipment Needed.

Android studio development essentials 2015