public static abstract class WebMessagePort.WebMessageCallback
extends Object



The listener for handling MessagePort events. The message callback methods are called on the main thread. If the embedder application wants to receive the messages on a different thread, it can do this by passing a Handler in WebMessagePort.setWebMessageCallback(WebMessageCallback,Handler). In the latter case, the application should be extra careful for thread safety since WebMessagePort methods should be called on main thread.

Summary

Public constructors

WebMessageCallback()

Public methods

void onMessage(WebMessagePort port, WebMessage message)

Message callback for receiving onMessage events.

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 constructors

WebMessageCallback

public WebMessageCallback ()

Public methods

onMessage

public void onMessage (WebMessagePort port, 
                WebMessage message)

Message callback for receiving onMessage events.

Parameters
port WebMessagePort: the WebMessagePort that the message is destined for
message WebMessage: the message from the entangled port.

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Last updated 2026-02-26 UTC.