拍摄照片出现的问题

您好，我在github上的官方demo中的Media Manager功能实现demo（github地址：GitHub - DJI-Mobile-SDK-Tutorials/Android-MediaManagerDemo.）里的mainactivity中添加了拍照功能的代码，然后出现报错：照相机当前忙或者是在当前状态不能拍摄照片，具体的界面如下

 

 

添加的代码如下：两个按键photomode和takephoto，对应的代码分别为

if (isMavicAir2() || isM300()) {
    switchCameraFlatMode(SettingsDefinitions.FlatCameraMode.PHOTO_SINGLE);
}else {
    switchCameraMode(SettingsDefinitions.CameraMode.SHOOT_PHOTO);
}

private void switchCameraFlatMode(SettingsDefinitions.FlatCameraMode flatCameraMode){
    Camera camera = DemoApplication.getCameraInstance();
    if (camera != null) {
        camera.setFlatMode(flatCameraMode, error -> {
            if (error == null) {
                showToast("Switch Camera Flat Mode Succeeded");
            } else {
                showToast(error.getDescription());
            }
        });
    }
}

private void switchCameraMode(SettingsDefinitions.CameraMode cameraMode){
    Camera camera = DemoApplication.getCameraInstance();
    if (camera != null) {
        camera.setMode(cameraMode, error -> {
            if (error == null) {
                showToast("Switch Camera Mode Succeeded");
            } else {
                showToast(error.getDescription());
            }
        });
    }
}

private void captureAction(){
    final Camera camera = DemoApplication.getCameraInstance();
    if (camera != null) {
        if (isMavicAir2() || isM300()) {
            camera.setFlatMode(SettingsDefinitions.FlatCameraMode.PHOTO_SINGLE, djiError -> {
                if (null == djiError) {
                    takePhoto();
                }
            });
        }else {
            camera.setShootPhotoMode(SettingsDefinitions.ShootPhotoMode.SINGLE, djiError -> {
                if (null == djiError) {
                    takePhoto();
                }
            });
        }
    }
}
private void takePhoto(){
    final Camera camera = DemoApplication.getCameraInstance();
    if (camera == null){
        return;
    }
    handler.postDelayed(new Runnable() {
        @Override
public void run() {
            camera.startShootPhoto(djiError -> {
                if (djiError == null) {
                    showToast("take photo: success");
                } else {
                    showToast(djiError.getDescription());
                }
            });
        }
    }, 2000);
}

然后出现图中的错误，您能帮我看看是哪里出现问题了么