public static final class MotionEvent.PointerProperties extends Object
MotionEvent
objects and to query pointer properties in bulk.Modifier and Type | Field and Description |
---|---|
int |
id
The pointer id.
|
int |
toolType
The pointer tool type.
|
Constructor and Description |
---|
PointerProperties()
Creates a pointer properties object with an invalid pointer id.
|
PointerProperties(MotionEvent.PointerProperties other)
Creates a pointer properties object as a copy of the contents of
another pointer properties object.
|
Modifier and Type | Method and Description |
---|---|
void |
clear()
Resets the pointer properties to their initial values.
|
void |
copyFrom(MotionEvent.PointerProperties other)
Copies the contents of another pointer properties object.
|
static MotionEvent.PointerProperties[] |
createArray(int size) |
boolean |
equals(Object other)
Indicates whether some other object is "equal to" this one.
|
int |
hashCode()
Returns a hash code value for the object.
|
public int id
MotionEvent.INVALID_POINTER_ID
(-1).MotionEvent.getPointerId(int)
public int toolType
MotionEvent.getToolType(int)
public PointerProperties()
public PointerProperties(MotionEvent.PointerProperties other)
other
- public static MotionEvent.PointerProperties[] createArray(int size)
public void clear()
public void copyFrom(MotionEvent.PointerProperties other)
other
- The pointer properties object to copy.public boolean equals(Object other)
Object
The equals
method implements an equivalence relation
on non-null object references:
x
, x.equals(x)
should return
true
.
x
and y
, x.equals(y)
should return true
if and only if
y.equals(x)
returns true
.
x
, y
, and z
, if
x.equals(y)
returns true
and
y.equals(z)
returns true
, then
x.equals(z)
should return true
.
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.
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.
equals
in class Object
other
- the reference object with which to compare.true
if this object is the same as the obj
argument; false
otherwise.Object.hashCode()
,
HashMap
public int hashCode()
Object
HashMap
.
The general contract of hashCode
is:
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.
equals(Object)
method, then calling the hashCode
method on each of
the two objects must produce the same integer result.
Object.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.)
hashCode
in class Object
Object.equals(java.lang.Object)
,
System.identityHashCode(java.lang.Object)