SizeF
public
final
class
SizeF
extends Object
implements
Parcelable
java.lang.Object | |
↳ | android.util.SizeF |
Immutable class for describing width and height dimensions in some arbitrary unit.
Width and height are finite values stored as a floating point representation.
Summary
Inherited constants |
---|
Fields | |
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public
static
final
Creator<SizeF> |
CREATOR
|
Public constructors | |
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SizeF(float width, float height)
Create a new immutable SizeF instance. |
Public methods | |
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int
|
describeContents()
Parcelable interface methods |
boolean
|
equals(Object obj)
Check if this size is equal to another size. |
float
|
getHeight()
Get the height of the size (as an arbitrary unit). |
float
|
getWidth()
Get the width of the size (as an arbitrary unit). |
int
|
hashCode()
Returns a hash code value for the object. |
static
SizeF
|
parseSizeF(String string)
Parses the specified string as a size value. |
String
|
toString()
Return the size represented as a string with the format |
void
|
writeToParcel(Parcel out, int flags)
Write this size to the specified parcel. |
Inherited methods | |
---|---|
Fields
Public constructors
SizeF
public SizeF (float width, float height)
Create a new immutable SizeF instance.
Both the width
and the height
must be a finite number.
In particular, NaN
and positive/negative infinity are illegal values.
Parameters | |
---|---|
width |
float : The width of the size |
height |
float : The height of the size |
Throws | |
---|---|
IllegalArgumentException |
if either width or height was not finite. |
Public methods
describeContents
public int describeContents ()
Parcelable interface methods
Returns | |
---|---|
int |
a bitmask indicating the set of special object types marshaled
by this Parcelable object instance.
Value is either 0 or CONTENTS_FILE_DESCRIPTOR |
equals
public boolean equals (Object obj)
Check if this size is equal to another size.
Two sizes are equal if and only if both their widths and heights are the same.
For this purpose, the width/height float values are considered to be the same if and only
if the method Float.floatToIntBits(float)
returns the identical int
value
when applied to each.
Parameters | |
---|---|
obj |
Object : the reference object with which to compare. |
Returns | |
---|---|
boolean |
true if the objects were equal, false otherwise |
getHeight
public float getHeight ()
Get the height of the size (as an arbitrary unit).
Returns | |
---|---|
float |
height |
getWidth
public float getWidth ()
Get the width of the size (as an arbitrary unit).
Returns | |
---|---|
float |
width |
hashCode
public 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 inequals
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
method, then calling thehashCode
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
method, then calling thehashCode
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.
Returns | |
---|---|
int |
a hash code value for this object. |
parseSizeF
public static SizeF parseSizeF (String string)
Parses the specified string as a size value.
The ASCII characters \
u002a
('*') and
\
u0078
('x') are recognized as separators between
the width and height.
For any SizeF s
: SizeF.parseSizeF(s.toString()).equals(s)
.
However, the method also handles sizes expressed in the
following forms:
"widthx
height" or
"width*
height" => new SizeF(width, height)
,
where width and height are string floats potentially
containing a sign, such as "-10.3", "+7" or "5.2", but not containing
an 'x'
(such as a float in hexadecimal string format).
SizeF.parseSizeF("3.2*+6").equals(new SizeF(3.2f, 6.0f)) == true
SizeF.parseSizeF("-3x-6").equals(new SizeF(-3.0f, -6.0f)) == true
SizeF.parseSizeF("4 by 3") => throws NumberFormatException
Parameters | |
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string |
String : the string representation of a size value. |
Returns | |
---|---|
SizeF |
the size value represented by string . |
Throws | |
---|---|
NumberFormatException |
if string cannot be parsed
as a size value. |
NullPointerException |
if string was null |
toString
public String toString ()
Return the size represented as a string with the format "WxH"
Returns | |
---|---|
String |
string representation of the size |
writeToParcel
public void writeToParcel (Parcel out, int flags)
Write this size to the specified parcel. To restore a size from a parcel, use the
CREATOR
.
Parameters | |
---|---|
out |
Parcel : The parcel to write the point's coordinates into
This value cannot be null . |
flags |
int : Additional flags about how the object should be written.
May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE .
Value is either 0 or a combination of Parcelable.PARCELABLE_WRITE_RETURN_VALUE , and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES |