useDevicesList
响应式的 enumerateDevices 列出可用的输入/输出设备。
Demo
相机 (0)
麦克风 (0)
扬声器 (0)
用法
js
import { useDevicesList } from '@vueuse/core'
const {
devices,
videoInputs: cameras,
audioInputs: microphones,
audioOutputs: speakers,
} = useDevicesList()
请求权限
要请求权限,使用 ensurePermissions
方法。
js
const {
ensurePermissions,
permissionGranted,
} = useDevicesList()
await ensurePermissions()
console.log(permissionsGranted.value)
组件
vue
<template>
<UseDevicesList v-slot="{ videoInputs, audioInputs, audioOutputs }">
摄像头: {{ videoInputs }}
麦克风: {{ audioInputs }}
扬声器: {{ audioOutputs }}
</UseDevicesList>
</template>
Type Declarations
Show Type Declarations
typescript
export interface UseDevicesListOptions extends ConfigurableNavigator {
onUpdated?: (devices: MediaDeviceInfo[]) => void
/**
* Request for permissions immediately if it's not granted,
* otherwise label and deviceIds could be empty
*
* @default false
*/
requestPermissions?: boolean
/**
* Request for types of media permissions
*
* @default { audio: true, video: true }
*/
constraints?: MediaStreamConstraints
}
export interface UseDevicesListReturn {
/**
* All devices
*/
devices: Ref<MediaDeviceInfo[]>
videoInputs: ComputedRef<MediaDeviceInfo[]>
audioInputs: ComputedRef<MediaDeviceInfo[]>
audioOutputs: ComputedRef<MediaDeviceInfo[]>
permissionGranted: ShallowRef<boolean>
ensurePermissions: () => Promise<boolean>
isSupported: ComputedRef<boolean>
}
/**
* Reactive `enumerateDevices` listing available input/output devices
*
* @see https://vueuse.org/useDevicesList
* @param options
*/
export declare function useDevicesList(
options?: UseDevicesListOptions,
): UseDevicesListReturn