public static final class CaptureResult.Key<T> extends Object
Key
is used to do capture result field lookups with
CaptureResult.get(android.hardware.camera2.CaptureResult.Key<T>)
.
For example, to get the timestamp corresponding to the exposure of the first row:
long timestamp = captureResult.get(CaptureResult.SENSOR_TIMESTAMP);
To enumerate over all possible keys for CaptureResult
, see
CameraCharacteristics.getAvailableCaptureResultKeys()
.
Constructor and Description |
---|
Key(String name,
Class<T> type)
Visible for testing and vendor extensions only.
|
Key(String name,
TypeReference<T> typeReference)
Visible for testing and vendor extensions only.
|
Modifier and Type | Method and Description |
---|---|
boolean |
equals(Object o)
Indicates whether some other object is "equal to" this one.
|
String |
getName()
Return a camelCase, period separated name formatted like:
"root.section[.subsections].name" . |
CameraMetadataNative.Key<T> |
getNativeKey()
Visible for CameraMetadataNative implementation only; do not use.
|
int |
hashCode()
Returns a hash code value for the object.
|
String |
toString()
Return this
CaptureResult.Key as a string representation. |
public Key(String name, TypeReference<T> typeReference)
public String getName()
"root.section[.subsections].name"
.
Built-in keys exposed by the Android SDK are always prefixed with "android."
;
keys that are device/platform-specific are prefixed with "com."
.
For example, CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP
would
have a name of "android.scaler.streamConfigurationMap"
; whereas a device
specific key might look like "com.google.nexus.data.private"
.
public final int hashCode()
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 final boolean equals(Object o)
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()
CaptureResult.Key
as a string representation.
"CaptureResult.Key(%s)"
, where %s
represents
the name of this key as returned by getName()
.
toString
in class Object
CaptureResult.Key
public CameraMetadataNative.Key<T> getNativeKey()