1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.permissioncontroller.permission.ui.handheld 18 19 import androidx.fragment.app.Fragment 20 import androidx.navigation.fragment.findNavController 21 22 /** 23 * Press back and close the activity if this is the last fragment. 24 */ pressBacknull25fun Fragment.pressBack() { 26 val wasBackExecuted = findNavController().popBackStack() 27 if (!wasBackExecuted) { 28 activity?.let { it.finishAfterTransition() } 29 } 30 }