通过系统相机拍照和录像(CameraPicker)应用可调用CameraPicker拍摄照片或录制视频无需申请相机权限。CameraPicker的相机交互界面由系统提供在用户点击拍摄和确认按钮后调用CameraPicker的应用获取对应的照片或者视频。应用开发者如果只是需要获取即时拍摄的照片或者视频则可以使用CameraPicker能力来轻松实现。由于照片的拍摄和确认都是由用户进行主动确认因此应用开发者可以不用申请操作相机的相关权限。开发步骤详细的API说明请参考ohos.multimedia.cameraPicker (相机选择器)。导入相关接口导入方法如下。import { camera, cameraPicker as picker } from kit.CameraKit; import { fileIo, fileUri } from kit.CoreFileKit;配置PickerProfile。说明PickerProfile的saveUri为可选参数如果未配置该项拍摄的照片和视频默认存入媒体库中。如果不想将照片和视频存入媒体库请自行配置应用沙箱内的文件路径。应用沙箱内的这个文件必须是一个存在的、可写的文件。这个文件的uri传入picker接口之后相当于应用给系统相机授权该文件的读写权限。系统相机在拍摄结束之后会对此文件进行覆盖写入。createPickerProfile(context: Context): picker.PickerProfile { let pathDir context.filesDir; let fileName ${new Date().getTime()}; let filePath pathDir /${fileName}.tmp; fileIo.createRandomAccessFileSync(filePath, fileIo.OpenMode.CREATE); let uri fileUri.getUriFromPath(filePath); let pickerProfile: picker.PickerProfile { cameraPosition: camera.CameraPosition.CAMERA_POSITION_BACK, saveUri: uri }; return pickerProfile; }fileIo接口调用方法请参考createRandomAccessFileSync和getUriFromPath。调用picker拍摄接口获取拍摄的结果。async getPickerResult(context: Context, pickerProfile: picker.PickerProfile): Promisepicker.PickerResult { let result: picker.PickerResult await picker.pick(context, [picker.PickerMediaType.PHOTO, picker.PickerMediaType.VIDEO], pickerProfile); console.info(picker resultCode: ${result.resultCode},resultUri: ${result.resultUri},mediaType: ${result.mediaType}); return result; }完整示例import { camera, cameraPicker as picker } from kit.CameraKit; import { fileIo, fileUri } from kit.CoreFileKit; Entry Component struct Index { State imgSrc: string ; State videoSrc: string ; createPickerProfile(context: Context): picker.PickerProfile { let pathDir context.filesDir; let fileName ${new Date().getTime()}; let filePath pathDir /${fileName}.tmp; fileIo.createRandomAccessFileSync(filePath, fileIo.OpenMode.CREATE); let uri fileUri.getUriFromPath(filePath); let pickerProfile: picker.PickerProfile { cameraPosition: camera.CameraPosition.CAMERA_POSITION_BACK, saveUri: uri }; return pickerProfile; } async getPickerResult(context: Context, pickerProfile: picker.PickerProfile): Promisepicker.PickerResult { let result: picker.PickerResult await picker.pick(context, [picker.PickerMediaType.PHOTO, picker.PickerMediaType.VIDEO], pickerProfile); console.info(picker resultCode: ${result.resultCode},resultUri: ${result.resultUri},mediaType: ${result.mediaType}); return result; } getContext(): Context | undefined { let uiContext: UIContext this.getUIContext(); let context: Context | undefined uiContext.getHostContext(); return context; } build() { RelativeContainer() { Column() { Image(this.imgSrc).width(200).height(200).backgroundColor(Color.Black).margin(5); Video({ src: this.videoSrc}).width(200).height(200).autoPlay(true); Button(Test Picker PhotoVideo).fontSize(20) .fontWeight(FontWeight.Bold) .onClick(async () { let context this.getContext(); if (context undefined) { return; } let pickerProfile this.createPickerProfile(context); let result await this.getPickerResult(context, pickerProfile); if (result.resultCode 0) { if (result.mediaType picker.PickerMediaType.PHOTO) { this.imgSrc result.resultUri; } else { this.videoSrc result.resultUri; } } }).margin(5); }.alignRules({ center: { anchor: __container__, align: VerticalAlign.Center }, middle: { anchor: __container__, align: HorizontalAlign.Center } }) .id(CaptureOrVideoButton) } .height(100%) .width(100%) } }