HarmonyOS cameraPicker录像时，相机黑屏？

Question

cameraPicker录像时，若传入了saveUri，相机会黑屏。

参考代码：

let fileUri = getContext(this).cacheDir + '/test.mp4';
let file = fileIo.openSync(fileUri, fileIo.OpenMode.READ_WRITE | fileIo.OpenMode.CREATE);
const pickerProfile: cameraPicker.PickerProfile = {
  cameraPosition: camera.CameraPosition.CAMERA_POSITION_BACK,
  saveUri: fileUri
};
const mediaTypes = [cameraPicker.PickerMediaType.VIDEO];
const pickRes = await cameraPicker.pick(getContext(), mediaTypes, pickerProfile);

Answer 1

使用saveUri需要传入完整的Uri例如：

file://com.example.myapplicationssss/data/storage/el2/base/haps/entry/cache/test.mp4 

通过getContext(this).cacheDir + '/test.mp4’获取的缺少file://com.example.myapplicationssss（package）部分，需要补足或用其他方式获取完整uri。