We've talked about the versatility of Android Views and how behavior and visual appearance can be customized. In this recipe, we will create a drawable state selector, which is a resource defined in XML that specifies the drawable to use based on the View's state.
The most commonly used states, along with the possible values, include the following:
- state_pressed=["true" | "false"]
- state_focused=["true" | "false"]
- state_selected=["true" | "false"]
- state_checked=["true" | "false"]
- state_enabled=["true" | "false"]
To define a state selector, create an XML file with the <selector> element, as shown:
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res...
