Added in API level 8

Summary: Nested Classes | Methods | Inherited Methods

EventLog

Kotlin |Java

public class EventLog
extends Object

java.lang.Object
↳	android.util.EventLog

Access to the system diagnostic event record. System diagnostic events are used to record certain system-level events (such as garbage collection, activity manager state, system watchdogs, and other low level activity), which may be automatically collected and analyzed during system development.

This is not the main "logcat" debugging log (Log)! These diagnostic events are for system integrators, not application authors.

Events use integer tag codes corresponding to /system/etc/event-log-tags. They carry a payload of one or more int, long, or String values. The event-log-tags file defines the payload contents for each type code.

Summary

Nested classes
`class`	`EventLog.Event` A previously logged event read from the logs.

Public methods
`static int`	`getTagCode(String name)` Get the event type tag code associated with an event name.
`static String`	`getTagName(int tag)` Get the name associated with an event type tag code.
`static void`	`readEvents(int[] tags, Collection<EventLog.Event> output)` Read events from the log, filtered by type.
`static int`	`writeEvent(int tag, String str)` Record an event log message.
`static int`	`writeEvent(int tag, int value)` Record an event log message.
`static int`	`writeEvent(int tag, float value)` Record an event log message.
`static int`	`writeEvent(int tag, Object... list)` Record an event log message.
`static int`	`writeEvent(int tag, long value)` Record an event log message.

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.

Public methods

getTagCode

Added in API level 8

public static int getTagCode (String name)

Get the event type tag code associated with an event name.

Parameters
`name`	`String`: of event to look up

Returns
`int`	the tag code, or -1 if no tag has that name

getTagName

Added in API level 8

public static String getTagName (int tag)

Get the name associated with an event type tag code.

Parameters
`tag`	`int`: code to look up

Returns
`String`	the name of the tag, or null if no tag has that number

readEvents

Added in API level 8

public static void readEvents (int[] tags, 
                Collection<EventLog.Event> output)

Read events from the log, filtered by type.

Parameters
`tags`	`int`: to search for
`output`	`Collection`: container to add events into

Throws
`IOException`	if something goes wrong reading events

writeEvent

Added in API level 8

public static int writeEvent (int tag, 
                String str)

Record an event log message.

Parameters
`tag`	`int`: The event type tag code
`str`	`String`: A value to log

Returns
`int`	The number of bytes written

writeEvent

Added in API level 8

public static int writeEvent (int tag, 
                int value)

Record an event log message.

Parameters
`tag`	`int`: The event type tag code
`value`	`int`: A value to log

Returns
`int`	The number of bytes written

writeEvent

Added in API level 23

public static int writeEvent (int tag, 
                float value)

Record an event log message.

Parameters
`tag`	`int`: The event type tag code
`value`	`float`: A value to log

Returns
`int`	The number of bytes written

writeEvent

Added in API level 8

public static int writeEvent (int tag, 
                Object... list)

Record an event log message.

Parameters
`tag`	`int`: The event type tag code
`list`	`Object`: A list of values to log

Returns
`int`	The number of bytes written

writeEvent

Added in API level 8

public static int writeEvent (int tag, 
                long value)

Record an event log message.

Parameters
`tag`	`int`: The event type tag code
`value`	`long`: A value to log

Returns
`int`	The number of bytes written

EventLog

Summary

Nested classes

Public methods

Inherited methods

Public methods

getTagCode

getTagName

readEvents

writeEvent

writeEvent

writeEvent

writeEvent

writeEvent