public
abstract
class
CellSignalStrength
extends Object
java.lang.Object | |
↳ | android.telephony.CellSignalStrength |
Known Direct Subclasses |
Abstract base class for cell phone signal strength related information.
Constants | |
---|---|
int |
SIGNAL_STRENGTH_GOOD
|
int |
SIGNAL_STRENGTH_GREAT
|
int |
SIGNAL_STRENGTH_MODERATE
|
int |
SIGNAL_STRENGTH_NONE_OR_UNKNOWN
|
int |
SIGNAL_STRENGTH_POOR
|
Public methods | |
---|---|
abstract
boolean
|
equals(Object o)
Indicates whether some other object is "equal to" this one. |
abstract
int
|
getAsuLevel()
Get the signal level as an asu value between 0..31, 99 is unknown |
abstract
int
|
getDbm()
Get the signal strength as dBm |
abstract
int
|
getLevel()
Get signal level as an int from 0..4
|
abstract
int
|
hashCode()
Returns a hash code value for the object. |
Inherited methods | |
---|---|
From
class
java.lang.Object
|
int SIGNAL_STRENGTH_GREAT
Constant Value: 4 (0x00000004)
int SIGNAL_STRENGTH_MODERATE
Constant Value: 2 (0x00000002)
int SIGNAL_STRENGTH_NONE_OR_UNKNOWN
Constant Value: 0 (0x00000000)
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 | |
---|---|
o |
Object :
the reference object with which to compare. |
Returns | |
---|---|
boolean |
true if this object is the same as the obj
argument; false otherwise. |
int getAsuLevel ()
Get the signal level as an asu value between 0..31, 99 is unknown
Returns | |
---|---|
int |
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 | |
---|---|
int |
a hash code value for this object. |