Web获取相机拍照图片案例

...
Web({ src: $rawfile(LOCAL_HTML_PATH), controller: this.controller })
  .onShowFileSelector((event: FileResult) => { 
    this.invokeCamera(((uri: string) => {
      event?.result.handleFileList([uri]);
    }))
    return true;
  })
...

invokeCamera(callback: (uri: string) => void) {
  const context = getContext(this) as common.UIAbilityContext;
  let want: Want = {
    action: ACTION_IMAGE_CAPTURE,
    parameters: {
      "callBundleName": context.abilityInfo.bundleName,
    }
  };
  let result: (error: BusinessError, data: common.AbilityResult) => void = (error: BusinessError, data: common.AbilityResult) => {
    if (error && error.code !== 0) {
      logger.error(`${TAG_CAMERA_ERROR} ${JSON.stringify(error.message)}`);
      return;
    }
    let resultUri: string = data.want?.parameters?.resourceUri as string;
    if (callback && resultUri) {
      callback(resultUri);
    }
  }
  context.startAbilityForResult(want, result);
}

<script>
  function showPic() {
    let event = this.event;
    let tFile = event ? event.target.files : [];
    if (tFile === 0) {
      document.getElementById('image_preview').style.display = 'block';
      document.getElementById('image_preview').innerHTML = "未选择图片";
      return
    }
    document.getElementById('image').setAttribute('src', URL.createObjectURL(tFile[0]));
    document.getElementById('image_preview').style.display = 'block';
    document.getElementById('image').style.display = 'block';
  }
</script>
<input ref="camera" type="file" id="upload" name="upload" accept="image/*" capture="upload" onchange="showPic()" />
<p id="image_preview">图片预览</p>
<img id="image">

webgetcameraimage                                           // har类型
|---mainpage
|   |---MainPage.ets                                       // ArkTS页面
|---rawfile
|   |---camera.html                                        // HTML页面