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While taking a course, I was instructed to make an xml selector for a Button. The course said to make a new Android xml in Eclipse, but i am using Android Studio.
Also when I custom write the code it gives me an error. It says "element selector must be declared".
Got code from here: Android: How to Make A Drawable Selector.
Does anyone know how to do this in Android Studio?
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A selector may be created by invoking the open method of this class, which will use the system's default selector provider to create a new selector. A selector may also be created by invoking the openSelector method of a custom selector provider. A selector remains open until it is closed via its close method.
A selector tag basically looks for the state of the UI at the time and displays the appropriate image. This particular drawable is for a check box, when the checkbox is in the state android:state_checked="false" (i.e. when the checkbox is not checked) it uses this image: @drawable/ic_launcher_allshow.
A ColorStateList is an object you can define in XML that you can apply as a color, but will actually change colors, depending on the state of the View object to which it is applied.
Though it is already answered in the comment, 
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