AppRegistry
AppRegistry
is the JS entry point to running all React Native apps. App root components should register themselves with AppRegistry.registerComponent
, then the native system can load the bundle for the app and then actually run the app when it's ready by invoking AppRegistry.runApplication
.
import {Text, AppRegistry} from 'react-native';
const App = props => (
<View>
<Text>App1</Text>
</View>
);
AppRegistry.registerComponent('Appname', () => App);
To "stop" an application when a view should be destroyed, call AppRegistry.unmountApplicationComponentAtRootTag
with the tag that was passed into runApplication
. These should always be used as a pair.
AppRegistry
should be required early in the require
sequence to make sure the JS execution environment is setup before other modules are required.
Reference
Methodsβ
setWrapperComponentProvider()
β
static setWrapperComponentProvider(provider)
Parameters:
Name | Type | Required |
---|---|---|
provider | ComponentProvider | yes |
enableArchitectureIndicator()
β
static enableArchitectureIndicator(enabled)
Parameters:
Name | Type | Required |
---|---|---|
enabled | boolean | yes |
registerConfig()
β
static registerConfig([config])
Parameters:
Name | Type | Required | Description |
---|---|---|---|
config | AppConfig | yes | See below. |
Valid AppConfig
keys are:
- 'appKey' (string)- Required.
- 'component' (ComponentProvider) - Optional.
- 'run' (Function) - Optional.
- 'section' (boolean) - Optional.
registerComponent()
β
static registerComponent(appKey, componentProvider, section?)
Parameters:
Name | Type | Required |
---|---|---|
appKey | string | yes |
componentProvider | ComponentProvider | yes |
section | boolean | no |
registerRunnable()
β
static registerRunnable(appKey, run)
Parameters:
Name | Type | Required |
---|---|---|
appKey | string | yes |
run | Function | yes |
registerSection()
β
static registerSection(appKey, component)
Parameters:
Name | Type | Required |
---|---|---|
appKey | string | yes |
component | ComponentProvider | yes |
getAppKeys()
β
static getAppKeys()
Returns an Array of AppKeys
getSectionKeys()
β
static getSectionKeys()
Returns an Array of SectionKeys
getSections()
β
static getSections()
Returns all Runnables which is an object with key of AppKeys
and value of type of Runnable
which consist of:
- 'component' (ComponentProvider).
- 'run' (Function).
getRunnable()
β
static getRunnable(appKey)
Returns a Runnable
object which consist of:
- 'component' (ComponentProvider).
- 'run' (Function).
getRegistry()
β
static getRegistry()
Returns a type Registry
which consist of:
- 'sections' (Array of strings).
- 'runnables' (Runnables).
setComponentProviderInstrumentationHook()
β
static setComponentProviderInstrumentationHook(hook)
Parameters:
Name | Type | Required | Description |
---|---|---|---|
hook | Function | yes | See below. |
A valid hook
accepts the following as arguments:
- 'component' (ComponentProvider)- Required.
- 'scopedPerformanceLogger' (IPerformanceLogger)- Required.
The hook
function returns a React Component
runApplication()
β
static runApplication(appKey, appParameters)
Loads the JavaScript bundle and runs the app.
Parameters:
Name | Type | Required |
---|---|---|
appKey | string | yes |
appParameters | any | yes |
unmountApplicationComponentAtRootTag()
β
static unmountApplicationComponentAtRootTag(rootTag)
Stops an application when a view should be destroyed.
Parameters:
Name | Type | Required |
---|---|---|
rootTag | number | yes |
registerHeadlessTask()
β
static registerHeadlessTask(taskKey, taskProvider)
Register a headless task. A headless task is a bit of code that runs without a UI. @param taskKey the key associated with this task @param taskProvider a promise returning function that takes some data passed from the native side as the only argument; when the promise is resolved or rejected the native side is notified of this event and it may decide to destroy the JS context.
This is a way to run tasks in JavaScript while your app is in the background. It can be used, for example, to sync fresh data, handle push notifications, or play music.
Parameters:
Name | Type | Required | Description |
---|---|---|---|
taskKey | String | yes | See below. |
taskProvider | TaskProvider | yes | See below. |
- A valid
TaskProvider
is a function that returns aTask
. - A
Task
is a function that accepts any data as argument and returns a Promise that resolves to undefined.
registerCancellableHeadlessTask()
β
static registerCancellableHeadlessTask(taskKey, taskProvider, taskCancelProvider)
Register a headless task which can be cancelled. A headless task is a bit of code that runs without a UI. @param taskKey the key associated with this task @param taskProvider a promise returning function that takes some data passed from the native side as the only argument; when the promise is resolved or rejected the native side is notified of this event and it may decide to destroy the JS context. @param taskCancelProvider a void returning function that takes no arguments; when a cancellation is requested, the function being executed by taskProvider should wrap up and return ASAP.
Parameters:
Name | Type | Required | Description |
---|---|---|---|
taskKey | String | yes | See below. |
taskProvider | TaskProvider | yes | See below. |
taskCancelProvider | TaskCancelProvider | yes | See below. |
- A valid
TaskProvider
is a function that returns aTask
. - A
Task
is a function that accepts any data as argument and returns a Promise that resolves to undefined. - A valid
TaskCancelProvider
is a function that returns aTaskCanceller
. - A
TaskCanceller
is a function that accepts no argument and returns void.
startHeadlessTask()
β
static startHeadlessTask(taskId, taskKey, data)
Only called from native code. Starts a headless task.
@param taskId the native id for this task instance to keep track of its execution @param taskKey the key for the task to start @param data the data to pass to the task
Parameters:
Name | Type | Required |
---|---|---|
taskId | number | yes |
taskKey | string | yes |
data | any | yes |
cancelHeadlessTask()
β
static cancelHeadlessTask(taskId, taskKey)
Only called from native code. Cancels a headless task.
@param taskId the native id for this task instance that was used when startHeadlessTask was called @param taskKey the key for the task that was used when startHeadlessTask was called
Parameters:
Name | Type | Required |
---|---|---|
taskId | number | yes |
taskKey | string | yes |