public class CompatibilityInfo extends Object implements Parcelable
Modifier and Type | Class and Description |
---|---|
class |
CompatibilityInfo.Translator
A helper object to translate the screen and window coordinates back and forth.
|
Parcelable.ClassLoaderCreator<T>, Parcelable.Creator<T>
Modifier and Type | Field and Description |
---|---|
int |
applicationDensity
The effective screen density we have selected for this application.
|
float |
applicationInvertedScale
Application's inverted scale.
|
float |
applicationScale
Application's scale.
|
static Parcelable.Creator<CompatibilityInfo> |
CREATOR |
static CompatibilityInfo |
DEFAULT_COMPATIBILITY_INFO
default compatibility info object for compatible applications
|
static int |
DEFAULT_NORMAL_SHORT_DIMENSION
This is the number of pixels we would like to have along the
short axis of an app that needs to run on a normal size screen.
|
static float |
MAXIMUM_ASPECT_RATIO
This is the maximum aspect ratio we will allow while keeping
applications in a compatible screen size.
|
CONTENTS_FILE_DESCRIPTOR, PARCELABLE_ELIDE_DUPLICATES, PARCELABLE_WRITE_RETURN_VALUE
Constructor and Description |
---|
CompatibilityInfo(ApplicationInfo appInfo,
int screenLayout,
int sw,
boolean forceCompat) |
Modifier and Type | Method and Description |
---|---|
boolean |
alwaysSupportsScreen() |
void |
applyToConfiguration(int displayDensity,
Configuration inoutConfig) |
void |
applyToDisplayMetrics(DisplayMetrics inoutDm) |
static float |
computeCompatibleScaling(DisplayMetrics dm,
DisplayMetrics outDm)
Compute the frame Rect for applications runs under compatibility mode.
|
int |
describeContents()
Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation.
|
boolean |
equals(Object o)
Indicates whether some other object is "equal to" this one.
|
CompatibilityInfo.Translator |
getTranslator()
Returns the translator which translates the coordinates in compatibility mode.
|
int |
hashCode()
Returns a hash code value for the object.
|
boolean |
isScalingRequired() |
boolean |
neverSupportsScreen() |
boolean |
supportsScreen() |
String |
toString()
Returns a string representation of the object.
|
void |
writeToParcel(Parcel dest,
int flags)
Flatten this object in to a Parcel.
|
public static final CompatibilityInfo DEFAULT_COMPATIBILITY_INFO
public static final int DEFAULT_NORMAL_SHORT_DIMENSION
public static final float MAXIMUM_ASPECT_RATIO
public final int applicationDensity
public final float applicationScale
public final float applicationInvertedScale
public static final Parcelable.Creator<CompatibilityInfo> CREATOR
public CompatibilityInfo(ApplicationInfo appInfo, int screenLayout, int sw, boolean forceCompat)
public boolean isScalingRequired()
public boolean supportsScreen()
public boolean neverSupportsScreen()
public boolean alwaysSupportsScreen()
public CompatibilityInfo.Translator getTranslator()
params
- the window's parameterpublic void applyToDisplayMetrics(DisplayMetrics inoutDm)
public void applyToConfiguration(int displayDensity, Configuration inoutConfig)
public static float computeCompatibleScaling(DisplayMetrics dm, DisplayMetrics outDm)
dm
- the display metrics used to compute the frame size.outDm
- If non-null the width and height will be set to their scaled values.public boolean equals(Object o)
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
o
- the reference object with which to compare.true
if this object is the same as the obj
argument; false
otherwise.Object.hashCode()
,
HashMap
public String toString()
Object
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())
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)
public int describeContents()
Parcelable
Parcelable.writeToParcel(Parcel, int)
,
the return value of this method must include the
Parcelable.CONTENTS_FILE_DESCRIPTOR
bit.describeContents
in interface Parcelable
Parcelable.CONTENTS_FILE_DESCRIPTOR
public void writeToParcel(Parcel dest, int flags)
Parcelable
writeToParcel
in interface Parcelable
dest
- The Parcel in which the object should be written.flags
- Additional flags about how the object should be written.
May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE
.