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DisplayManagerCompat

public abstract class DisplayManagerCompat
extends Object

java.lang.Object
↳	android.support.v4.hardware.display.DisplayManagerCompat

Helper for accessing features in DisplayManager introduced after API level 4 in a backwards compatible fashion.

Summary

Constants
`String`	`DISPLAY_CATEGORY_PRESENTATION` Display category: Presentation displays.

Public methods
`abstract Display`	`getDisplay(int displayId)` Gets information about a logical display.
`abstract Display[]`	`getDisplays()` Gets all currently valid logical displays.
`abstract Display[]`	`getDisplays(String category)` Gets all currently valid logical displays of the specified category.
`static DisplayManagerCompat`	`getInstance(Context context)` Gets an instance of the display manager given the context.

Inherited methods

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Constants

DISPLAY_CATEGORY_PRESENTATION

String DISPLAY_CATEGORY_PRESENTATION

Display category: Presentation displays.

This category can be used to identify secondary displays that are suitable for use as presentation displays.

See also:

Constant Value: "android.hardware.display.category.PRESENTATION"

Public methods

getDisplay

Display getDisplay (int displayId)

Gets information about a logical display. The display metrics may be adjusted to provide compatibility for legacy applications.

Parameters
`displayId`	`int`: The logical display id.

Returns
`Display`	The display object, or null if there is no valid display with the given id.

getDisplays

Display[] getDisplays ()

Gets all currently valid logical displays.

Returns
`Display[]`	An array containing all displays.

getDisplays

Display[] getDisplays (String category)

Gets all currently valid logical displays of the specified category.

When there are multiple displays in a category the returned displays are sorted of preference. For example, if the requested category is DISPLAY_CATEGORY_PRESENTATION and there are multiple presentation displays then the displays are sorted so that the first display in the returned array is the most preferred presentation display. The application may simply use the first display or allow the user to choose.

Parameters
`category`	`String`: The requested display category or null to return all displays.

Returns
`Display[]`	An array containing all displays sorted by order of preference.

See also:

DISPLAY_CATEGORY_PRESENTATION

getInstance

DisplayManagerCompat getInstance (Context context)

Gets an instance of the display manager given the context.

Parameters
`context`	`Context`

Returns
`DisplayManagerCompat`