鸿蒙开发：15-使用CameraPicker拉起系统相机

使用CameraPicker拉起系统相机

官方文档

如何调用系统拍照并获取图片-相机开发（Camera）-拍照和图片-媒体开发-开发 - 华为HarmonyOS开发者

示例代码

CommonConstants

export class CommonConstants {
  /**
   * Size of components.
   */
  static readonly FULL_SIZE: string = '100%';
}

ImagePickerPage

import { cameraPicker } from '@kit.CameraKit';
import { camera } from '@kit.CameraKit';
import { BusinessError } from '@ohos.base';
import { hilog } from '@kit.PerformanceAnalysisKit'
import { CommonConstants as Const } from '../common/constants/CommonConstants';

@Entry
@Component
struct ImagePickerPage {
  @State uri: Resource | string | undefined = undefined;
  private cameraPosition: Array<camera.CameraPosition> = [
    camera.CameraPosition.CAMERA_POSITION_UNSPECIFIED, camera.CameraPosition.CAMERA_POSITION_BACK,
    camera.CameraPosition.CAMERA_POSITION_FRONT, camera.CameraPosition.CAMERA_POSITION_FOLD_INNER
  ];
  private mediaType: Array<cameraPicker.PickerMediaType> = [
    cameraPicker.PickerMediaType.PHOTO, cameraPicker.PickerMediaType.VIDEO
  ];

  build() {
    Row() {
      Column() {
        Image(this.uri)
          .height($r('app.float.image_height'))
          .alt($r('app.media.startIcon'))

      Button($r('app.string.capture'))
        .width($r('app.float.button_width'))
        .margin({ top: $r('app.float.margin') })
        .onClick(async () => {
          try {
            // Configure to launch the rear camera
            let pickerProfile: cameraPicker.PickerProfile = { cameraPosition: this.cameraPosition[1] };
            // Configure to photo mode
            let pickerResult: cameraPicker.PickerResult = await cameraPicker.pick(getContext(this),
              [this.mediaType[0]], pickerProfile);
            // Get video URI
            this.uri = pickerResult.resultUri;
            hilog.info(0x0000, ' ', "the pick pickerResult is:" + JSON.stringify(pickerResult));
            // the pick pickerResult is:{"resultCode":0,"resultUri":"file://media/Photo/24/IMG_1741153812_023/IMG_20250305_134832.jpg","mediaType":"photo"}
          } catch (error) {
            let err = error as BusinessError;
            hilog.error(0x0000, '', `the pick call failed. error code: ${err.code}`);
          }
        })
      }
      .width(Const.FULL_SIZE)
    }
    .height(Const.FULL_SIZE)
  }
}