HarmonyOS 鸿蒙Next系统相机拍照问题

参考这个demo：

import picker from '@ohos.multimedia.cameraPicker'
import camera from '@ohos.multimedia.camera';
import common from '@ohos.app.ability.common';
import { BusinessError } from '@ohos.base';
import fileuri from '@ohos.file.fileuri';
import fs from '@ohos.file.fs';
let mContext = getContext(this) as common.Context;
class CameraPosition {
cameraPosition : camera.CameraPosition
saveUri :string
constructor(cameraPosition : camera.CameraPosition,saveUri:string) {
this.cameraPosition = cameraPosition
this.saveUri = saveUri
}
}
let pathDir = getContext().filesDir;
let filePath = pathDir + /${<span class="hljs-keyword">new</span> <span class="hljs-built_in">Date</span>().getTime()}.jpg}
fs.createRandomAccessFileSync(filePath, fs.OpenMode.CREATE);
let uri = fileuri.getUriFromPath(filePath);
async function demo() {
try {
let pickerProfile = new CameraPosition(camera.CameraPosition.CAMERA_POSITION_BACK,uri)
//前置摄像机传CAMERA_POSITION_FRONT，后置摄像机传CAMERA_POSITION_BACK，saveuri传想存到对应沙箱的uri
let pickerResult: picker.PickerResult = await picker.pick(mContext,
[picker.PickerMediaType.PHOTO, picker.PickerMediaType.VIDEO], pickerProfile);
console.log(“the pick pickerResult is:” + JSON.stringify(pickerResult));
} catch (error) {
let err = error as BusinessError;
console.error(the pick call failed. error code: ${err.code});
}
}
@Entry
@Component
struct IndexPage{
build(){
Column(){
Button(‘拉起后置摄像头’).onClick(()=>{
demo()
})
}
}
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>