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PickupFragment.kt
PickupFragment.kt 2.54 KiB
/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.cupcake
import com.example.cupcake.model.OrderViewModel
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import androidx.fragment.app.activityViewModels
import androidx.navigation.fragment.findNavController
import com.example.cupcake.databinding.FragmentPickupBinding
/**
* [PickupFragment] allows the user to choose a pickup date for the cupcake order.
*/
class PickupFragment : Fragment() {
// Binding object instance corresponding to the fragment_pickup.xml layout
// This property is non-null between the onCreateView() and onDestroyView() lifecycle callbacks,
// when the view hierarchy is attached to the fragment.
private var binding: FragmentPickupBinding? = null
private val sharedViewModel: OrderViewModel by activityViewModels()
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
val fragmentBinding = FragmentPickupBinding.inflate(inflater, container, false)
binding = fragmentBinding
return fragmentBinding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
binding?.apply {
lifecycleOwner = viewLifecycleOwner
viewModel = sharedViewModel
pickupFragment = this@PickupFragment
}
}
/**
* Navigate to the next screen to see the order summary.
*/
fun goToNextScreen() {
findNavController().navigate(R.id.action_pickupFragment_to_summaryFragment)
}
/**
* This fragment lifecycle method is called when the view hierarchy associated with the fragment
* is being removed. As a result, clear out the binding object.
*/
override fun onDestroyView() {
super.onDestroyView()
binding = null
}
}