HarmonyOS 打开系统相机如何默认前置镜头

我们有一个功能需要对个人正面形象进行拍照，希望默认镜头使用前置镜头，是否支持此功能，下面是我们的代码

export class UuCamera {
  public static async cameraCapture(context: common.UIAbilityContext): Promise<Array<string> | null> {
    // 设置打开相机的Intent
    let want: Want = {
      action: UuCameraConstants.ACTION_PICKER_CAMERA,
      parameters: {
        'supportMultiMode': false,
        'callBundleName': context.abilityInfo.bundleName
      }
    }
    let result: common.AbilityResult | null = null;
    try {
      result = await context.startAbilityForResult(want);
    } catch (e) {
    }
    if (result && result.resultCode === 0) {
      let param: Record<string, Object> | undefined = result.want?.parameters;
      if (param !== undefined) {
        if (param[UuCameraConstants.KEY_RESULT_PICKER_CAMERA_ARRAY]) {
          let resourceArray: string[] = param[UuCameraConstants.KEY_RESULT_PICKER_CAMERA_ARRAY] as string[];
          return resourceArray
        } else {
          let resourceUri: string = param[UuCameraConstants.KEY_RESULT_PICKER_CAMERA] as string;
          return [resourceUri];
        }
      }
    }
    return null;
  }
}

HarmonyOS

shlp

2024-12-27 17:52:57

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回答 1

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回答 1

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按时间

put_get

使用startAbilityForResult拉起系统相机，不支持设置前后摄像头

可以使用相机服务，样例代码如下：

async takePhoneByAPI(mContext: Context){
  async () => {
    try {
      let pickerProfile: cameraPicker.PickerProfile = {
        cameraPosition: camera.CameraPosition.CAMERA_POSITION_FRONT
      };
      let pickerResult: cameraPicker.PickerResult = await cameraPicker.pick(mContext,
        [cameraPicker.PickerMediaType.PHOTO, cameraPicker.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}`);
    }
  }
}