feat(App): accelerometer

packages/uni-app-plus/src/service/api/device/accelerometer.ts

+import {
+  defineAsyncApi,
+  API_ON_ACCELEROMETER,
+  API_TYPE_ON_ACCELEROMETER_CHANGE,
+  API_OFF_ACCELEROMETER,
+  API_TYPE_OFF_ACCELEROMETER_CHANGE,
+  API_START_ACCELEROMETER,
+  API_TYPE_START_ACCELEROMETER,
+  API_STOP_ACCELEROMETER,
+  API_TYPE_STOP_ACCELEROMETER,
+  defineOnApi,
+} from '@dcloudio/uni-api'
+import { DEVICE_FREQUENCY } from '../constants'
+
+let listener: number | null = null
+
+export const onAccelerometerChange = <API_TYPE_ON_ACCELEROMETER_CHANGE>(
+  defineOnApi(API_ON_ACCELEROMETER, () => {
+    startAccelerometer()
+  })
+)
+
+export const offAccelerometerChange = <API_TYPE_OFF_ACCELEROMETER_CHANGE>(
+  defineOnApi(API_OFF_ACCELEROMETER, () => {
+    stopAccelerometer()
+  })
+)
+
+export const startAccelerometer = <API_TYPE_START_ACCELEROMETER>(
+  defineAsyncApi(API_START_ACCELEROMETER, (_, { resolve, reject }) => {
+    listener =
+      listener ||
+      plus.accelerometer.watchAcceleration(
+        (res) => {
+          UniServiceJSBridge.invokeOnCallback(API_ON_ACCELEROMETER, {
+            x: (res && res.xAxis) || 0,
+            y: (res && res.yAxis) || 0,
+            z: (res && res.zAxis) || 0,
+          })
+        },
+        (err) => {
+          listener = null
+          reject(`startAccelerometer:fail ${err.message}`)
+        },
+        {
+          frequency: DEVICE_FREQUENCY,
+        }
+      )
+
+    setTimeout(resolve, DEVICE_FREQUENCY)
+  })
+)
+
+export const stopAccelerometer = <API_TYPE_STOP_ACCELEROMETER>(
+  defineAsyncApi(API_STOP_ACCELEROMETER, (_, { resolve }) => {
+    if (listener) {
+      plus.accelerometer.clearWatch(listener)
+      listener = null
+    }
+    resolve()
+  })
+)

packages/uni-app-plus/src/service/api/index.ts

 export * from './file/getFileInfo'
 export * from './device/compass'
 export * from './device/vibrate'
+export * from './device/accelerometer'
 export * from './media/getImageInfo'
 export * from './media/getVideoInfo'