BottomFragment

底部弹出控件 - Fragment 实现

import android.os.Bundle
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import androidx.fragment.app.FragmentManager
import com.dench.baselib.R
import com.dench.baselib.databinding.FragmentBottomBinding

class BottomFragment : Fragment() {
    companion object {
        fun start(fm: FragmentManager, fragment: Fragment): BottomFragment {
            val bottomFragment = BottomFragment().apply {
                setFragment(fragment)
            }
            fm.beginTransaction()
                .setCustomAnimations(
                    R.anim.fragment_bottom_enter,
                    0,
                    0,
                    R.anim.fragment_bottom_exit
                )
                .add(android.R.id.content, bottomFragment)
                .addToBackStack(null)
                .commitAllowingStateLoss()
            return bottomFragment
        }
    }

    private lateinit var fragment: Fragment

    private fun setFragment(fragment: Fragment) {
        this.fragment = fragment
    }

    private lateinit var binding: FragmentBottomBinding
    private val TAG = "BottomFragment"

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        binding = FragmentBottomBinding.inflate(inflater, container, false)
        return binding.root
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        binding.run {
            binding.bottomFragmentRl.setOnClickListener(View.OnClickListener {
                Log.d(TAG, "bottom root view click.")
                dismissSelf()
            })

            /** add fragment */
            childFragmentManager.beginTransaction()
                .add(R.id.container, fragment)
                .commitAllowingStateLoss()
        }
    }

    private fun dismissSelf() {
        parentFragmentManager.popBackStack()
    }
}