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AppRegistry

AppRegistry是所有 React Native 应用的 JS 入口。应用的根组件应当通过AppRegistry.registerComponent方法注册自己,然后原生系统才可以加载应用的代码包并且在启动完成之后通过调用AppRegistry.runApplication来真正运行应用。

import {Text, AppRegistry} from 'react-native';

const App = () => (
<View>
<Text>App1</Text>
</View>
);

AppRegistry.registerComponent('Appname', () => App);

要“结束”一个应用并销毁视图的话,请调用AppRegistry.unmountApplicationComponentAtRootTag方法,参数为在runApplication中使用的标签名。它们必须严格匹配。

AppRegistry应当在require序列中尽可能早的被 require 到,以确保 JS 运行环境在其它模块之前被准备好。


文档

方法

getAppKeys()

static getAppKeys(): string[];

返回一个 AppKeys 数组。


getRegistry()

static getRegistry(): {sections: string[]; runnables: Runnable[]};

返回一个Registry对象。


getRunnable()

static getRunnable(appKey: string): : Runnable | undefined;

返回一个Runnable对象。

参数:

名称类型
appKey
Required
string

getSectionKeys()

static getSectionKeys(): string[];

Returns an array of strings.


getSections()

static getSections(): Record<string, Runnable>;

Returns a Runnables object.


registerCancellableHeadlessTask()

static registerCancellableHeadlessTask(
taskKey: string,
taskProvider: TaskProvider,
taskCancelProvider: TaskCancelProvider,
);

Register a headless task which can be cancelled. A headless task is a bit of code that runs without a UI.

Parameters:

NameTypeDescription
taskKey
Required
stringThe native id for this task instance that was used when startHeadlessTask was called.
taskProvider
Required
TaskProviderA 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.
taskCancelProvider
Required
TaskCancelProvidera void returning function that takes no arguments; when a cancellation is requested, the function being executed by taskProvider should wrap up and return ASAP.

registerComponent()

static registerComponent(
appKey: string,
getComponentFunc: ComponentProvider,
section?: boolean,
): string;

参数:

名称类型
appKey
必填
string
componentProvider
必填
ComponentProvider
sectionboolean

registerConfig()

static registerConfig(config: AppConfig[]);

参数:

名称类型
config
Required
AppConfig[]

registerHeadlessTask()

static registerHeadlessTask(
taskKey: string,
taskProvider: TaskProvider,
);

Register a headless task. A headless task is a bit of code that runs without a UI.

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:

NameTypeDescription
taskKey
Required
stringThe native id for this task instance that was used when startHeadlessTask was called.
taskProvider
Required
TaskProviderA 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.

registerRunnable()

static registerRunnable(appKey: string, func: Runnable): string;

Parameters:

NameType
appKey
Required
string
run
Required
function

registerSection()

static registerSection(
appKey: string,
component: ComponentProvider,
);

Parameters:

NameType
appKey
Required
string
component
Required
ComponentProvider

runApplication()

static runApplication(appKey: string, appParameters: any): void;

加载 JavaScript 包并运行应用程序。

参数:

NameType
appKey
Required
string
appParameters
Required
any

setComponentProviderInstrumentationHook()

static setComponentProviderInstrumentationHook(
hook: ComponentProviderInstrumentationHook,
);

参数:

NameType
hook
Required
function

A valid hook function accepts the following as arguments:

NameType
component
Required
ComponentProvider
scopedPerformanceLogger
Required
IPerformanceLogger

The function must also return a React Component.


setWrapperComponentProvider()

static setWrapperComponentProvider(
provider: WrapperComponentProvider,
);

Parameters:

NameType
provider
Required
ComponentProvider

startHeadlessTask()

static startHeadlessTask(
taskId: number,
taskKey: string,
data: any,
);

Only called from native code. Starts a headless task.

Parameters:

NameTypeDescription
taskId
Required
numberThe native id for this task instance to keep track of its execution.
taskKey
Required
stringThe key for the task to start.
data
Required
anyThe data to pass to the task.

unmountApplicationComponentAtRootTag()

static unmountApplicationComponentAtRootTag(rootTag: number);

Stops an application when a view should be destroyed.

Parameters:

NameType
rootTag
Required
number

Type Definitions

AppConfig

Application configuration for the registerConfig method.

Type
object

Properties:

NameType
appKey
Required
string
componentComponentProvider
runfunction
sectionboolean

Note: Every config is expected to set either component or run function.

Registry

Type
object

Properties:

NameType
runnablesarray of Runnables
sectionsarray of strings

Runnable

Type
object

Properties:

NameType
componentComponentProvider
runfunction

Runnables

An object with key of appKey and value of type of Runnable.

Type
object

Task

A Task is a function that accepts any data as argument and returns a Promise that resolves to undefined.

Type
function

TaskCanceller

A TaskCanceller is a function that accepts no argument and returns void.

Type
function

TaskCancelProvider

A valid TaskCancelProvider is a function that returns a TaskCanceller.

Type
function

TaskProvider

A valid TaskProvider is a function that returns a Task.

Type
function