Summary: Constants | Methods | Inherited Methods

Notification.Metric.TimeDifference

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Kotlin |Java

public static final class Notification.Metric.TimeDifference
extends Notification.Metric.MetricValue

java.lang.Object
↳	android.app.Notification.Metric.MetricValue
	↳	android.app.Notification.Metric.TimeDifference

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This represents a timer, a stopwatch, or a countdown to an event.

When representing a running timer (or stopwatch, etc), this value specifies a reference instant for when that timer will hit zero (or the stopwatch was at zero, respectively), called the "zero time". In this case the time displayed is defined as the difference between the "zero time" and the current time, meaning it will show a live-updated timer.

The zero time can be specified as an Instant (in which case it corresponds to a "real-world" point in time, from InstantSource.system), or as milliseconds since boot (from SystemClock.elapsedRealtime()). The latter might be suitable when the timer is tied to an AlarmManager.ELAPSED_REALTIME alarm in AlarmManager.

When representing a paused timer (or stopwatch, etc), this value specifies the duration as a fixed value.

This value can also specify its formatting, whether as a "chronometer" (e.g. 43:21) or an adaptive time (e.g. 1h 43m).

Summary

Constants
int	FORMAT_ADAPTIVE Formatting option: adaptive (e.g. 1h 5m; 15m; 1m 30s; 5s).
int	FORMAT_CHRONOMETER Formatting option: chronometer-style, (e.g. two hours = "2:00:00").

Public methods
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
static Notification.Metric.TimeDifference	forPausedStopwatch(Duration elapsedTime, int format) Creates a "paused stopwatch" metric, showing the elapsedTime.
static Notification.Metric.TimeDifference	forPausedTimer(Duration remainingTime, int format) Creates a "paused timer" metric, showing the remainingTime.
static Notification.Metric.TimeDifference	forStopwatch(long startTime, int format) Creates a "running stopwatch" metric, which will show the time elapsed since startTime, specified in the SystemClock.elapsedRealtime() frame of reference.
static Notification.Metric.TimeDifference	forStopwatch(Instant startTime, int format) Creates a "running stopwatch" metric, which will show the time elapsed since startTime.
static Notification.Metric.TimeDifference	forTimer(long endTime, int format) Creates a "running timer" metric, which will show a countdown to endTime, specified in the SystemClock.elapsedRealtime() frame of reference.
static Notification.Metric.TimeDifference	forTimer(Instant endTime, int format) Creates a "running timer" metric, which will show a countdown to endTime.
int	getFormat() Formatting option for the timer/stopwatch.
Duration	getPausedDuration() The fixed time difference, for a paused timer or stopwatch.
Long	getZeroElapsedRealtime() The elapsed realtime at which the time difference is zero.
Instant	getZeroTime() The Instant at which the time difference is zero.
int	hashCode() Returns a hash code value for the object.
boolean	isStopwatch() Whether this TimeDifference value represents a stopwatch -- when running, it counts up from getZeroTime() (or getZeroElapsedRealtime()).
boolean	isTimer() Whether this TimeDifference value represents a timer -- when running, it counts down to getZeroTime() (or getZeroElapsedRealtime()).
String	toString() Returns a string representation of 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 timeoutMillis, int nanos) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. final void wait(long timeoutMillis) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. final void wait() Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Constants

FORMAT_ADAPTIVE

public static final int FORMAT_ADAPTIVE

Formatting option: adaptive (e.g. 1h 5m; 15m; 1m 30s; 5s).

Constant Value: 1 (0x00000001)

FORMAT_CHRONOMETER

public static final int FORMAT_CHRONOMETER

Formatting option: chronometer-style, (e.g. two hours = "2:00:00").

Constant Value: 2 (0x00000002)

Public methods

equals

public boolean equals (Object obj)

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.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
obj	Object: the reference object with which to compare.

Returns
boolean	true if this object is the same as the obj argument; false otherwise.

forPausedStopwatch

public static Notification.Metric.TimeDifference forPausedStopwatch (Duration elapsedTime, 
                int format)

Creates a "paused stopwatch" metric, showing the elapsedTime.

Parameters
elapsedTime	Duration: This value cannot be null.
format	int: Value is one of the following: FORMAT_ADAPTIVE FORMAT_CHRONOMETER

Returns
Notification.Metric.TimeDifference	This value cannot be null.

forPausedTimer

public static Notification.Metric.TimeDifference forPausedTimer (Duration remainingTime, 
                int format)

Creates a "paused timer" metric, showing the remainingTime.

Parameters
remainingTime	Duration: This value cannot be null.
format	int: Value is one of the following: FORMAT_ADAPTIVE FORMAT_CHRONOMETER

Returns
Notification.Metric.TimeDifference	This value cannot be null.

forStopwatch

public static Notification.Metric.TimeDifference forStopwatch (long startTime, 
                int format)

Creates a "running stopwatch" metric, which will show the time elapsed since startTime, specified in the SystemClock.elapsedRealtime() frame of reference.

Parameters
startTime	long: elapsed realtime at which the stopwatch started. Value is a non-negative timestamp in the SystemClock.elapsedRealtime() time base.
format	int: Value is one of the following: FORMAT_ADAPTIVE FORMAT_CHRONOMETER

Returns
Notification.Metric.TimeDifference	This value cannot be null.

forStopwatch

public static Notification.Metric.TimeDifference forStopwatch (Instant startTime, 
                int format)

Creates a "running stopwatch" metric, which will show the time elapsed since startTime.

Parameters
startTime	Instant: instant at which the stopwatch started. This value cannot be null.
format	int: Value is one of the following: FORMAT_ADAPTIVE FORMAT_CHRONOMETER

Returns
Notification.Metric.TimeDifference	This value cannot be null.

forTimer

public static Notification.Metric.TimeDifference forTimer (long endTime, 
                int format)

Creates a "running timer" metric, which will show a countdown to endTime, specified in the SystemClock.elapsedRealtime() frame of reference.

Parameters
endTime	long: elapsed realtime at which the timer reaches zero. Value is a non-negative timestamp in the SystemClock.elapsedRealtime() time base.
format	int: Value is one of the following: FORMAT_ADAPTIVE FORMAT_CHRONOMETER

Returns
Notification.Metric.TimeDifference	This value cannot be null.

forTimer

public static Notification.Metric.TimeDifference forTimer (Instant endTime, 
                int format)

Creates a "running timer" metric, which will show a countdown to endTime.

Parameters
endTime	Instant: instant at which the timer reaches zero. This value cannot be null.
format	int: Value is one of the following: FORMAT_ADAPTIVE FORMAT_CHRONOMETER

Returns
Notification.Metric.TimeDifference	This value cannot be null.

getFormat

public int getFormat ()

Formatting option for the timer/stopwatch.

Returns
int	Value is one of the following: FORMAT_ADAPTIVE FORMAT_CHRONOMETER

getPausedDuration

public Duration getPausedDuration ()

The fixed time difference, for a paused timer or stopwatch.

• For a paused timer this is the remainingTime supplied to forPausedTimer(Duration, int).
• For a paused stopwatch this is the elapsedTime supplied to forPausedStopwatch(Duration, int).
• For running timers or stopwatches this is null.

Returns
Duration

getZeroElapsedRealtime

public Long getZeroElapsedRealtime ()

The elapsed realtime at which the time difference is zero. Only valid for an SystemClock.elapsedRealtime()-based TimeDifference.

• For a running timer this is the endTime supplied to forTimer(long, int).
• For a running stopwatch this is the startTime supplied to forStopwatch(long, int).
• For running timers or stopwatches based on Instant (as well as paused timers and stopwatches), this is null.

.
Value is a non-negative timestamp in the SystemClock.elapsedRealtime() time base.

Returns
Long	Value is a non-negative timestamp in the SystemClock.elapsedRealtime() time base.

getZeroTime

public Instant getZeroTime ()

The Instant at which the time difference is zero. Only valid for an Instant-based TimeDifference.

• For a running timer this is the endTime supplied to forTimer(Instant,int).
• For a running stopwatch this is the startTime supplied to forStopwatch(Instant,int).
• For running timers or stopwatches based on elapsed realtime (as well as paused timers and stopwatches), this is null.

Returns
Instant

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 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 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 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.

Returns
int	a hash code value for this object.

isStopwatch

public boolean isStopwatch ()

Whether this TimeDifference value represents a stopwatch -- when running, it counts up from getZeroTime() (or getZeroElapsedRealtime()).

Returns
boolean

isTimer

public boolean isTimer ()

Whether this TimeDifference value represents a timer -- when running, it counts down to getZeroTime() (or getZeroElapsedRealtime()).

Returns
boolean

toString

public String toString ()

Returns a string representation of the object.

Returns
String	a string representation of the object.