Added in API level 8

EventLog


open class EventLog
kotlin.Any
   ↳ 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 (android.util.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

A previously logged event read from the logs.

Public methods
open static Int

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

open static String!

Get the name associated with an event type tag code.

open static Unit

Read events from the log, filtered by type.

open static Int
writeEvent(tag: Int, value: Int)

Record an event log message.

open static Int
writeEvent(tag: Int, value: Long)

Record an event log message.

open static Int
writeEvent(tag: Int, value: Float)

Record an event log message.

open static Int
writeEvent(tag: Int, str: String!)

Record an event log message.

open static Int
writeEvent(tag: Int, vararg list: Any!)

Record an event log message.

Public methods

getTagCode

Added in API level 8
open static fun getTagCode(name: String!): Int

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

Parameters
name String!: of event to look up
Return
Int the tag code, or -1 if no tag has that name

getTagName

Added in API level 8
open static fun getTagName(tag: Int): String!

Get the name associated with an event type tag code.

Parameters
tag Int: code to look up
Return
String! the name of the tag, or null if no tag has that number

readEvents

Added in API level 8
open static fun readEvents(
    tags: IntArray!,
    output: MutableCollection<EventLog.Event!>!
): Unit

Read events from the log, filtered by type.

Parameters
tags IntArray!: to search for
output MutableCollection<EventLog.Event!>!: container to add events into
Exceptions
java.io.IOException if something goes wrong reading events

writeEvent

Added in API level 8
open static fun writeEvent(
    tag: Int,
    value: Int
): Int

Record an event log message.

Parameters
tag Int: The event type tag code
value Int: A value to log
Return
Int The number of bytes written

writeEvent

Added in API level 8
open static fun writeEvent(
    tag: Int,
    value: Long
): Int

Record an event log message.

Parameters
tag Int: The event type tag code
value Long: A value to log
Return
Int The number of bytes written

writeEvent

Added in API level 23
open static fun writeEvent(
    tag: Int,
    value: Float
): Int

Record an event log message.

Parameters
tag Int: The event type tag code
value Float: A value to log
Return
Int The number of bytes written

writeEvent

Added in API level 8
open static fun writeEvent(
    tag: Int,
    str: String!
): Int

Record an event log message.

Parameters
tag Int: The event type tag code
str String!: A value to log
Return
Int The number of bytes written

writeEvent

Added in API level 8
open static fun writeEvent(
    tag: Int,
    vararg list: Any!
): Int

Record an event log message.

Parameters
tag Int: The event type tag code
list Any!: A list of values to log
Return
Int The number of bytes written