Controls that are not commonly used in android,
AutoCompleteTextView: It is a view similar to EditText (in fact, it is a subclass of EditText), but it automatically displays the list of suggestions completed when the user inputs it.
<AutoCompleteTextView android:layout_width="fill_parent" android:layout_height="wrap_content" />
TimePicker: You can select a time in 24-hour or AM/PM mode.
<TimePicker android:id="@+id/timePicker" android:layout_width="wrap_content" android:layout_height="wrap_content" />
DatePicker: Select a date
<DatePicker android:layout_width="wrap_content" android:layout_height="wrap_content" />
DigitalClock: Display the clock in number Mode
<DigitalClock android:layout_width="wrap_content" android:layout_height="wrap_content" />
AnalogClock: Displays a simulated clock with two pointers (hour hands and minute hands)
<AnalogClock android:layout_width="wrap_content" android:layout_height="wrap_content" />
ImageSwitcher: Image Selector
Basic use see: http://www.cnblogs.com/zzw1994/p/5082870.html
GridView: Display items in a two-dimensional rolling network (for example, jiugongge display)
Basic use see: http://www.cnblogs.com/zzw1994/p/5082591.html