Resources are static bits of information held outside the Java source code. You have seen one type of resource—the layout—frequently in the examples in this book. There are many other types of resources, such as images and strings, that you can take advantage of in your Android applications.
Resources are stored as files under the
res/ directory in your Android project layout. With the exception of raw resources (
res/raw/), all the other types of resources are parsed for you, either by the Android packaging system or by the Android system on the device or emulator. So, for example, when you lay out an activity's UI via a layout resource (
res/layout/), you do not have to parse the layout XML ...