Thus far, we have covered the fundamentals of Android but have not touched the user interface (UI). In this chapter, we are going to discuss user interfaces and controls. We will begin by discussing the general philosophy of UI development in Android, then we’ll describe the common UI controls that ship with the Android SDK. We will also discuss layout managers and view adapters. We will conclude by discussing the Hierarchy Viewer tool—a tool used to debug and optimize Android UIs.
KeywordsUser Interface Content Provider Java Code Radio Button Custom Adapter
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