android - Kotlin:在 fragment 内打开新 Activity

Question

如何在使用按钮时在 fragment 内打开新的 Activity？

我试过了

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)

    LogOut_btn.setOnClickListener {
        //FirebaseAuth.getInstance().signOut()
        val intent = Intent (this, Main::class.java)
        startActivity(intent)            
    }
}

val intent = Intent doesn't seem to work in a fragment.

知道如何在 fragment 中开始新 Activity 吗？

Answer 1

因为 Fragment 不是 Context 类型，所以您需要调用父 Activity:

 val intent = Intent (getActivity(), Main::class.java)
 getActivity().startActivity(intent)

或者类似的东西

activity?.let{
    val intent = Intent (it, Main::class.java)
    it.startActivity(intent)
}