Android Programming: The Big Nerd Ranch Guide, 4th Edition

Using a Camera Intent

The next step is to actually take the picture. This is the easy part: You get to use an implicit intent again.

Start by stashing the location of the photo file. You will use it a few more times, so this will save a bit of work.

Listing 16.10  Grabbing the photo file location (CrimeFragment.kt)

class CrimeFragment : Fragment(), DatePickerFragment.Callbacks {

    private lateinit var crime: Crime
    private lateinit var photoFile: File
    ...
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        ...
        crimeDetailViewModel.crimeLiveData.observe(
            viewLifecycleOwner,
            Observer { crime ->
                crime?.let {
                    this.crime = crime
                    photoFile = crimeDetailViewModel.getPhotoFile(crime)
                    updateUI()
                }
            })
    }
    ...
}