The Welcome app’s default GUI already contains a
TextView, so we’ll simply modify its properties.
According to the Android documentation for application resources
it’s considered a good practice to place strings, string arrays, images, colors, font sizes, dimensions and other app resources in XML file within the subfolders of the project’s
res folder, so that the resources can be managed separately from your app’s Java code. This is known as externalizing the resources. For example, if you externalize color values, all components that use the same color can be updated to a new color ...