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StateSet

public class StateSet
extends Object

java.lang.Object
↳	android.util.StateSet

State sets are arrays of positive ints where each element represents the state of a View (e.g. focused, selected, visible, etc.). A View may be in one or more of those states. A state spec is an array of signed ints where each element represents a required (if positive) or an undesired (if negative) View state. Utils dealing with state sets. In theory we could encapsulate the state set and state spec arrays and not have static methods here but there is some concern about performance since these methods are called during view drawing.

Summary

Fields
`public static final int[]`	`NOTHING` A state set that does not contain any valid states.
`public static final int[]`	`WILD_CARD` A state specification that will be matched by all StateSets.

Public methods
`static String`	`dump(int[] states)`
`static boolean`	`isWildCard(int[] stateSetOrSpec)` Return whether the stateSetOrSpec is matched by all StateSets.
`static boolean`	`stateSetMatches(int[] stateSpec, int[] stateSet)` Return whether the stateSet matches the desired stateSpec.
`static boolean`	`stateSetMatches(int[] stateSpec, int state)` Return whether the state matches the desired stateSpec.
`static int[]`	`trimStateSet(int[] states, int newSize)`

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 timeout, 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 timeout)` 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.

Fields

NOTHING

public static final int[] NOTHING

A state set that does not contain any valid states.

WILD_CARD

public static final int[] WILD_CARD

A state specification that will be matched by all StateSets.

Public methods

dump

public static String dump (int[] states)

Parameters
`states`	`int`

Returns
`String`

isWildCard

public static boolean isWildCard (int[] stateSetOrSpec)

Return whether the stateSetOrSpec is matched by all StateSets.

Parameters
`stateSetOrSpec`	`int`: a state set or state spec.

Returns
`boolean`

stateSetMatches

public static boolean stateSetMatches (int[] stateSpec, 
                int[] stateSet)

Return whether the stateSet matches the desired stateSpec.

Parameters
`stateSpec`	`int`: an array of required (if positive) or prohibited (if negative) `View` states.
`stateSet`	`int`: an array of `View` states

Returns
`boolean`

stateSetMatches

public static boolean stateSetMatches (int[] stateSpec, 
                int state)

Return whether the state matches the desired stateSpec.

Parameters
`stateSpec`	`int`: an array of required (if positive) or prohibited (if negative) `View` states.
`state`	`int`: a `View` state

Returns
`boolean`

trimStateSet

public static int[] trimStateSet (int[] states, 
                int newSize)

Parameters
`states`	`int`
`newSize`	`int`

Returns
`int[]`

Interfaces

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StateSet

Summary

Fields

Public methods

Inherited methods

Fields

NOTHING

WILD_CARD

Public methods

dump

isWildCard

stateSetMatches

stateSetMatches

trimStateSet