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Added in API level 14

MotionEvent.PointerProperties

public static final class MotionEvent.PointerProperties
extends Object

java.lang.Object
   ↳ android.view.MotionEvent.PointerProperties


Transfer object for pointer properties. Objects of this type can be used to specify the pointer id and tool type when creating new MotionEvent objects and to query pointer properties in bulk.

Summary

Fields

public int id

The pointer id.

public int toolType

The pointer tool type.

Public constructors

MotionEvent.PointerProperties()

Creates a pointer properties object with an invalid pointer id.

MotionEvent.PointerProperties(MotionEvent.PointerProperties other)

Creates a pointer properties object as a copy of the contents of another pointer properties object.

Public methods

void clear()

Resets the pointer properties to their initial values.

void copyFrom(MotionEvent.PointerProperties other)

Copies the contents of another pointer properties object.

boolean equals(Object other)

Indicates whether some other object is "equal to" this one.

int hashCode()

Returns a hash code value for the object.

Inherited methods

From class java.lang.Object

Fields

id

Added in API level 14
int id

The pointer id. Initially set to INVALID_POINTER_ID (-1).

See also:

toolType

Added in API level 14
int toolType

The pointer tool type. Initially set to 0.

See also:

Public constructors

MotionEvent.PointerProperties

Added in API level 14
MotionEvent.PointerProperties ()

Creates a pointer properties object with an invalid pointer id.

MotionEvent.PointerProperties

Added in API level 14
MotionEvent.PointerProperties (MotionEvent.PointerProperties other)

Creates a pointer properties object as a copy of the contents of another pointer properties object.

Public methods

clear

Added in API level 14
void clear ()

Resets the pointer properties to their initial values.

copyFrom

Added in API level 14
void copyFrom (MotionEvent.PointerProperties other)

Copies the contents of another pointer properties object.

Parameters
other MotionEvent.PointerProperties: The pointer properties object to copy.

equals

Added in API level 14
boolean equals (Object other)

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object (x == y has the value true).

Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.

Parameters
other Object: the reference object with which to compare.
Returns
boolean true if this object is the same as the obj argument; false otherwise.

hashCode

Added in API level 14
int hashCode ()

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the JavaTM programming language.)

Returns
int a hash code value for this object.
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