![]() ![]() You will have to do this for each button. This will automatically inject code for the onClick method in MainActivity.java. Now hover on this line and an alert will pop up on the left like this:Ĭlick Create 'OnClick.'. Specify the name of the method in the XML of the button. When a button is clicked, we will have to describe what needs to happen. The layout can be easily recreated using the Design Tab where you can drag-and-drop the widgets wherever you want. I have used a RelativeLayout here, meaning that every widget is arranged with respect to the widgets around it. Get the complete code at the end of this article. Since the code for buttons is similar I've left them out here. The recieved data is displayed in the TextView (the empty part below the buttons). It's a simple one with the minimum required widgets to test the connection between the devices.Īs you can see, it has an EditText widget for getting input from the user, buttons to start the connection, transmit the data, end the connection and clear the TextView. We will be using the same layout for both the USB App and the Bluetooth App. This tutorial will use one activity, the Main Activity, which will take the user's input to send to the Arduino and also display the received text. Activities contain widgets like buttons, text fields, images, etc., which help in the transfer of information. There are a host of other files too but they are all linked together with the help of these three.Īn activity can be described as a screen where the user interacts with the phone. This is where you define when the app must start, which permissions it needs, and which hardware it needs to access. the components or the widget-like buttons, TextViews etc. This contains the layout of the app, i.e. It controls the way the app will function. There are 3 major files in an Android app: You could also follow this article to set up Android Studio on your computer. ![]() Android Studio makes app development easier with its predictions and code generation. Android Studio - You will need to have this installed and setup.USB OTG Cable - You will need this to connect the USB cable of the Arduino to the micro-USB port of the Smartphone.Check if your phone does using the USB Host Diagnostics App from the Play Store. Android Phone which supports USB Host Mode (i.e., OTG Support) - Most devices running Android 3.1+ support this.Want to send text from your Android phone to your Arduino? Here's how! Requirements/Bill of Materials ![]()
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