Impossible to understand what it is except if we convert it in HEX format with two's complement. This decimal value could be for example "-16777216". In this video we will create a simple spinner in Android Studio and fill it with a string array from our xml resource file.Example code. getColor() method in order to retrieve a decimal value. Once converted into an int, we can't either use it, we have to call the ContextCompat. So we can't directly use this Object like that, we have to cast it. It's an ID that only the Android OS knows how to use it. getSelectedItem() method is an Object type. It's interesting to notice here that the value gets from the Spinner. Then we link our BadprogArrayAdapter with this Fragment.Īnd finally when the user will click on a color, this color will be automatically changed in the View in the center of the Fragment. We start by creating an array of Integers in which we add the 3 colors present in the file colors.xml. The FirstFragment contains data needed to create our Spinner of colors. In our example we don't specify the type when we declare our ArrayAdapter but as this class is a template one we could have replaced Object objects with Integer objects in the constructor parameters. We use Integer and not int type because we can't use primitive types, indeed Integer inherits from Object whereas int doesn't. Within we're going to fill an array of Integers (list of colors) and use this array to display every element (color) in this array. We have then the BaprogArrayAdapter which is a class that extends the Android ArrayAdapter. The MainActiviy is quite simple and so easy to understand. Spinner, Object class and 2's complement will be see in this example. The minimum SDK for this tutorial is the API 14 (Android 4.0 or also known as IceCreamSandwich). In this Android Spinner tutorial we're going to create our own cutom Spinner by replacing classic texts with squares of color. With Android we haven't a classic ComboBox like in other frameworks but we have instead a Spinner.Īctually it's exactly the same and only the name differs.
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