![]() ![]() The minimum API level indicates that it will not work (or at least has not been tested) with any older Android version, and will likely crash. Each version of Android has an associated API level, and each app in its manifest declares its “minimum” and “target” SDK version (i.e. New versions of Android introduce new capabilities, and sometimes drop support for old ones. Here you will also find Parcel and Bundle, which are different ways of serializing/deserializing data, mainly meant to be used for saving/restoring UI state. android.os contains various useful classes to do with the UI framework: Handler for feeding tasks/messages to a Looper, and AsyncTask for running tasks on background threads that need coordination with the UI.aphics is the namespace for the 2D graphics API Canvas is the drawing context, Paint specifies settings like what colour, drawing mode, text settings etc to use, and Typeface is how you specify fonts.android.widget is the namespace where you will find specific widget implementations and related classes.The android.view namespace defines non-widget-specific utility classes. Here you will find important methods for accessing application package data and the application environment. is the base class for and other similar classes. ![]() ![]() Here is an overview of some of the most important package namespaces and classes in the Android API. 4.3 android.opengl Versus khronos.opengles. ![]()
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