Expo 相机的 takePictureAsync 不返回任何内容。 （承诺从未兑现）

Question

I started using Camera from Expo for React Native ( https://docs.expo.io/versions/v35.0.0/sdk/camera/ )

I see camera window but when I call await this.camera.takePictureAsync(); the Promise is never finished and I get no output.

My camera:

<Camera ref={(camera) => this.camera = camera}
  style={{flex: 1}}
  type={this.state.type}
>
  <Button onPress={() => this.snap()} title='SNAP'/>
</Camera>

Snap function:

snap = async () => {
  if (this.camera) {
      console.log("SNAP!");
      let photo = await this.camera.takePictureAsync();
      console.log(photo);
  }
};

The SNAP! is shown in console so there is no problem with camera itself. Second console.log is never called.

I am testing my app on Android 9 (Real device)

EDIT: It is working on emulator, so there must be problem specifically with the real device

Answer 1

Try to set useCamera2Api prop to true for Camera element.