49 lines
1.8 KiB
Swift
49 lines
1.8 KiB
Swift
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import ExpoModulesCore
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public class MyNativeModule: Module {
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// Each module class must implement the definition function. The definition consists of components
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// that describes the module's functionality and behavior.
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// See https://docs.expo.dev/modules/module-api for more details about available components.
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public func definition() -> ModuleDefinition {
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// Sets the name of the module that JavaScript code will use to refer to the module. Takes a string as an argument.
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// Can be inferred from module's class name, but it's recommended to set it explicitly for clarity.
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// The module will be accessible from `requireNativeModule('MyNativeModule')` in JavaScript.
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Name("MyNativeModule")
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// Defines constant property on the module.
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Constant("PI") {
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Double.pi
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}
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// Defines event names that the module can send to JavaScript.
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Events("onChange")
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// Defines a JavaScript synchronous function that runs the native code on the JavaScript thread.
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Function("hello") {
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return "Hello world! 👋"
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}
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// Defines a JavaScript function that always returns a Promise and whose native code
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// is by default dispatched on the different thread than the JavaScript runtime runs on.
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AsyncFunction("setValueAsync") { (value: String) in
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// Send an event to JavaScript.
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self.sendEvent("onChange", [
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"value": value
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])
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}
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// Enables the module to be used as a native view. Definition components that are accepted as part of the
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// view definition: Prop, Events.
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View(MyNativeModuleView.self) {
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// Defines a setter for the `url` prop.
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Prop("url") { (view: MyNativeModuleView, url: URL) in
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if view.webView.url != url {
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view.webView.load(URLRequest(url: url))
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}
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}
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Events("onLoad")
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}
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}
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}
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