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Android Studio – Opening an activity from a fragment using a button

I am completely new to android studio (kotlin) and am attempting to open a new activity from a fragment using a button. I apologize if this is simple, i just can not seem to figure it out.

This is what i have so far, it does not do anything when i run the emulator and click on the button

class HomeFragment : Fragment(R.layout.fragment_home) {


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        val btntakepicture: Button? = view?.findViewById<Button>(R.id.btn_take_picture)
        btntakepicture?.setOnClickListener {
            requireActivity().run {
                startActivity(Intent(this, takepicture::class.java))
                finish()
            }
        }
    }
}
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3

Answers


  1. 0

    There is almost no reason to ever override onCreate in a fragment. It is called before your view is created so you have no button to set a listener on at that point. You should override onViewCreated instead.

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  2. 0

    To fix this, you can move the code to the onViewCreated method instead, which is called after the view is created:

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  3. 0

    Override onViewCreated method as follow:

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    
    val btntakepicture: Button = view.findViewById<Button>(R.id.btn_take_picture)
    btntakepicture.setOnClickListener {
        requireActivity().run {
            startActivity(Intent(this, takepicture::class.java))
            finish()
        }
    }
}
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