ReactAndroid/com.facebook.react.jstasks/HeadlessJsTaskContext

HeadlessJsTaskContext

Helper class for dealing with JS tasks. Handles per-ReactContext active task tracking, starting / stopping tasks and notifying listeners.

Types

Companion

object Companion

Functions

addTaskEventListener

@Synchronized

fun addTaskEventListener(listener: HeadlessJsTaskEventListener)

Register a task lifecycle event listener. Synchronized in order to prevent race conditions with finishTask, as the listener will be invoked for already running tasks.

finishTask

@Synchronized

fun finishTask(taskId: Int)

Finish a JS task. Doesn't actually stop the task on the JS side, only removes it from the list of active tasks and notifies listeners.

hasActiveTasks

fun hasActiveTasks(): Boolean

Get whether there are any running JS tasks at the moment.

isTaskRunning

@Synchronized

fun isTaskRunning(taskId: Int): Boolean

Check if a given task is currently running. A task is stopped if either finishTask is called or it times out.

removeTaskEventListener

fun removeTaskEventListener(listener: HeadlessJsTaskEventListener)

Unregister a task lifecycle event listener.

retryTask

@Synchronized

fun retryTask(taskId: Int): Boolean

Retry a running JS task with a delay. Invokes as long as the process does not get killed.

startTask

@Synchronized

fun startTask(taskConfig: HeadlessJsTaskConfig): Int

Start a JS task. Handles invoking AppRegistry.startHeadlessTask and notifying listeners.