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Summary: Constants | Methods | Inherited Methods

CellSignalStrength

public abstract class CellSignalStrength
extends Object

java.lang.Object
↳	android.telephony.CellSignalStrength

Known direct subclasses

CellSignalStrengthCdma, CellSignalStrengthGsm, CellSignalStrengthLte, CellSignalStrengthNr, CellSignalStrengthTdscdma, CellSignalStrengthWcdma

CellSignalStrengthCdma	Signal strength related information.
CellSignalStrengthGsm	GSM signal strength related information.
CellSignalStrengthLte	LTE signal strength related information.
CellSignalStrengthNr	5G NR signal strength related information.
CellSignalStrengthTdscdma	Tdscdma signal strength related information.
CellSignalStrengthWcdma	Wcdma signal strength related information.

Abstract base class for cell phone signal strength related information.

Summary

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 technology-specific signal strength in Arbitrary Strength Units, calculated from the strength of the pilot signal or equivalent.
`abstract int`	`getDbm()` Get the technology-specific signal strength in dBm, which is the signal strength of the pilot signal or equivalent.
`abstract int`	`getLevel()` Retrieve an abstract level value for the overall signal quality.
`abstract int`	`hashCode()` Returns a hash code value for the object.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Constants

SIGNAL_STRENGTH_GOOD

public static final int SIGNAL_STRENGTH_GOOD

Constant Value: 3 (0x00000003)

SIGNAL_STRENGTH_GREAT

public static final int SIGNAL_STRENGTH_GREAT

Constant Value: 4 (0x00000004)

SIGNAL_STRENGTH_MODERATE

public static final int SIGNAL_STRENGTH_MODERATE

Constant Value: 2 (0x00000002)

SIGNAL_STRENGTH_NONE_OR_UNKNOWN

public static final int SIGNAL_STRENGTH_NONE_OR_UNKNOWN

Constant Value: 0 (0x00000000)

SIGNAL_STRENGTH_POOR

public static final int SIGNAL_STRENGTH_POOR

Constant Value: 1 (0x00000001)

Public methods

equals

public abstract 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:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values 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.
For any non-null reference value 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.

getAsuLevel

public abstract int getAsuLevel ()

Get the technology-specific signal strength in Arbitrary Strength Units, calculated from the strength of the pilot signal or equivalent.

Returns
`int`

getDbm

public abstract int getDbm ()

Get the technology-specific signal strength in dBm, which is the signal strength of the pilot signal or equivalent.

Returns
`int`

getLevel

public abstract int getLevel ()

Retrieve an abstract level value for the overall signal quality.

Returns
`int`	a single integer from 0 to 4 representing the general signal quality. 0 represents very poor or unknown signal quality while 4 represents excellent signal quality. Value is between SIGNAL_STRENGTH_NONE_OR_UNKNOWN and SIGNAL_STRENGTH_GREAT inclusive

hashCode

public abstract 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 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.
If two objects are equal according to the equals(Object) method, then calling the hashCode 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(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 Java™ programming language.)

Returns
`int`	a hash code value for this object.

Interfaces

Classes

Enums

Exceptions

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CellSignalStrength

Summary

Constants

Public methods

Inherited methods

Constants

SIGNAL_STRENGTH_GOOD

SIGNAL_STRENGTH_GREAT

SIGNAL_STRENGTH_MODERATE

SIGNAL_STRENGTH_NONE_OR_UNKNOWN

SIGNAL_STRENGTH_POOR

Public methods

equals

getAsuLevel

getDbm

getLevel

hashCode