public class Point
extends Object
implements Parcelable
java.lang.Object | |
↳ | android.graphics.Point |
Point holds two integer coordinates
Inherited constants |
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![]() android.os.Parcelable
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Fields |
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public static final Creator<Point> |
CREATOR
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public int |
x
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public int |
y
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Public constructors |
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Point() |
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Point(int x, int y) |
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Point(Point src) |
Public methods |
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int |
describeContents() Parcelable interface methods |
final boolean |
equals(int x, int y) Returns true if the point's coordinates equal (x,y) |
boolean |
equals(Object o) Indicates whether some other object is "equal to" this one. |
int |
hashCode() Returns a hash code value for the object. |
final void |
negate() Negate the point's coordinates |
final void |
offset(int dx, int dy) Offset the point's coordinates by dx, dy |
void |
readFromParcel(Parcel in) Set the point's coordinates from the data stored in the specified parcel. |
void |
set(int x, int y) Set the point's x and y coordinates |
String |
toString() Returns a string representation of the object. |
void |
writeToParcel(Parcel out, int flags) Write this point to the specified parcel. |
Inherited methods |
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![]() java.lang.Object
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![]() android.os.Parcelable
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int describeContents ()
Parcelable interface methods
Returns | |
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int |
a bitmask indicating the set of special object types marshaled by this Parcelable object instance. |
boolean equals (int x, int y)
Returns true if the point's coordinates equal (x,y)
Parameters | |
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x |
int
|
y |
int
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Returns | |
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boolean |
boolean equals (Object o)
Indicates whether some other object is "equal to" this one.
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.
Parameters | |
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o |
Object : the reference object with which to compare. |
Returns | |
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boolean |
true if this object is the same as the obj argument; false otherwise. |
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:
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. 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 | |
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int |
a hash code value for this object. |
void offset (int dx, int dy)
Offset the point's coordinates by dx, dy
Parameters | |
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dx |
int
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dy |
int
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void readFromParcel (Parcel in)
Set the point's coordinates from the data stored in the specified parcel. To write a point to a parcel, call writeToParcel().
Parameters | |
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in |
Parcel : The parcel to read the point's coordinates from |
void set (int x, int y)
Set the point's x and y coordinates
Parameters | |
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x |
int
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y |
int
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String toString ()
Returns a string representation of the object. In general, the toString
method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.
The toString
method for class Object
returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@
', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:
getClass().getName() + '@' + Integer.toHexString(hashCode())
Returns | |
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String |
a string representation of the object. |
void writeToParcel (Parcel out, int flags)
Write this point to the specified parcel. To restore a point from a parcel, use readFromParcel()
Parameters | |
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out |
Parcel : The parcel to write the point's coordinates into |
flags |
int : Additional flags about how the object should be written. May be 0 or PARCELABLE_WRITE_RETURN_VALUE . |