分裂成束

我找到了解决办法。我们不传递片段,而是包含片段的类和参数( Class<T> 和 Bundle 然后,我们创建并添加片段 onViewCreated()

class BaseCustomDialogFragment: Fragment() {

companion object {
    val FRAGMENT_CLASS = "FRAGMENT_CLASS"
    val ARGUMENTS_BUNDLE = "ARGUMENTS_BUNDLE"
    fun <T> getInstance(title: String, fragmentClass: Class<T>, bundle: Bundle): BaseCustomDialogFragment {
        return BaseCustomDialogFragment().apply {
            arguments = Bundle()
            arguments!!.putString(DIALOG_TITLE, title)
            arguments!!.putSerializable(FRAGMENT_CLASS, fragmentClass)
            arguments!!.putBundle(ARGUMENTS_BUNDLE, bundle)
        }
    }
}

private lateinit var className: Class<*>
private lateinit var bundle: Bundle

override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
    (arguments?.getSerializable(FRAGMENT_CLASS) as? Class<*>)?.let { className = it }
    arguments?.getBundle(ARGUMENTS_BUNDLE)?.let { bundle = it }

    // Inflate View.
    return inflater.inflate(R.layout.fragment_custom_dialog, container, false)
}

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

private fun setContentUp(){
    val fragment = createFragment(className, bundle)

    activity?.supportFragmentManager
            ?.beginTransaction()
            ?.add(R.id.fragment_dialog_placeholder, fragment)
            ?.disallowAddToBackStack()
            ?.commit()
}

private fun <T> createFragment(fragmentClass: Class<T>, arguments: Bundle): Fragment {
    val fragment = fragmentClass.newInstance() as Fragment
    fragment.arguments = arguments
    return fragment
}

我希望对某人有帮助。