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Merge pull request #223 from android/permissions
Adds Fine permission UI to background permission sample.
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237 changes: 237 additions & 0 deletions
237
.../android/gms/location/sample/locationupdatesbackgroundkotlin/PermissionRequestFragment.kt
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| /* | ||
| * Copyright (C) 2020 Google Inc. All Rights Reserved. | ||
| * | ||
| * 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.google.android.gms.location.sample.locationupdatesbackgroundkotlin | ||
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| import android.Manifest | ||
| import android.content.Context | ||
| import android.content.Intent | ||
| import android.content.pm.PackageManager | ||
| import android.net.Uri | ||
| import android.os.Bundle | ||
| import android.provider.Settings | ||
| import android.util.Log | ||
| import android.view.LayoutInflater | ||
| import android.view.View | ||
| import android.view.ViewGroup | ||
| import androidx.core.content.ContextCompat.checkSelfPermission | ||
| import androidx.fragment.app.Fragment | ||
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| import com.google.android.gms.location.sample.locationupdatesbackgroundkotlin.databinding.FragmentPermissionRequestBinding | ||
| import com.google.android.material.snackbar.Snackbar | ||
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| private const val TAG = "PermissionRequestFrag" | ||
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| /** | ||
| * Displays information about why a user should enable either the FINE location permission or the | ||
| * background location permission (depending on what is needed). | ||
| * | ||
| * Allows users to grant the permissions as well. | ||
| */ | ||
| class PermissionRequestFragment : Fragment() { | ||
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| // Set by Activity for which type of permission to request (Fine or background). | ||
| private var permissionRequestType: PermissionRequestType? = null | ||
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| private lateinit var binding: FragmentPermissionRequestBinding | ||
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| private var activityListener: Callbacks? = null | ||
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| override fun onCreate(savedInstanceState: Bundle?) { | ||
| super.onCreate(savedInstanceState) | ||
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| permissionRequestType = | ||
| arguments?.getSerializable(ARG_PERMISSION_REQUEST_TYPE) as PermissionRequestType | ||
| } | ||
|
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| override fun onCreateView( | ||
| inflater: LayoutInflater, | ||
| container: ViewGroup?, | ||
| savedInstanceState: Bundle? | ||
| ): View? { | ||
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| binding = FragmentPermissionRequestBinding.inflate(inflater, container, false) | ||
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| when (permissionRequestType) { | ||
| PermissionRequestType.FINE_LOCATION -> | ||
| binding.explanationTextView.text = | ||
| getString(R.string.fine_location_access_rationale_text) | ||
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| PermissionRequestType.BACKGROUND_LOCATION -> | ||
| binding.explanationTextView.text = | ||
| getString(R.string.background_location_access_rationale_text) | ||
| } | ||
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| binding.permissionRequestButton.setOnClickListener { | ||
| when (permissionRequestType) { | ||
| PermissionRequestType.FINE_LOCATION -> | ||
| requestFineLocationPermission() | ||
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| PermissionRequestType.BACKGROUND_LOCATION -> | ||
| TODO("Add system background permission request.") | ||
| } | ||
| } | ||
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| return binding.root | ||
| } | ||
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| override fun onAttach(context: Context) { | ||
| super.onAttach(context) | ||
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| if (context is Callbacks) { | ||
| activityListener = context | ||
| } else { | ||
| throw RuntimeException("$context must implement OnFragmentInteractionListener") | ||
| } | ||
| } | ||
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| override fun onDetach() { | ||
| super.onDetach() | ||
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| activityListener = null | ||
| } | ||
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| override fun onRequestPermissionsResult( | ||
| requestCode: Int, | ||
| permissions: Array<String>, | ||
| grantResults: IntArray | ||
| ) { | ||
| Log.d(TAG, "onRequestPermissionResult") | ||
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| when (requestCode) { | ||
| REQUEST_FINE_LOCATION_PERMISSIONS_REQUEST_CODE -> when { | ||
| grantResults.isEmpty() -> | ||
| // If user interaction was interrupted, the permission request | ||
| // is cancelled and you receive an empty array. | ||
| Log.d(TAG, "User interaction was cancelled.") | ||
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| grantResults[0] == PackageManager.PERMISSION_GRANTED -> | ||
| activityListener?.displayLocationUI() | ||
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| else -> { | ||
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| Snackbar.make( | ||
| binding.frameLayout, | ||
| R.string.permission_denied_explanation, | ||
| Snackbar.LENGTH_LONG | ||
| ) | ||
| .setAction(R.string.settings) { | ||
| // Build intent that displays the App settings screen. | ||
| val intent = Intent() | ||
| intent.action = Settings.ACTION_APPLICATION_DETAILS_SETTINGS | ||
| val uri = Uri.fromParts( | ||
| "package", | ||
| BuildConfig.APPLICATION_ID, | ||
| null | ||
| ) | ||
| intent.data = uri | ||
| intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK | ||
| startActivity(intent) | ||
| } | ||
| .show() | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| private fun fineLocationPermissionApproved(): Boolean { | ||
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| val context = context ?: return false | ||
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| return PackageManager.PERMISSION_GRANTED == checkSelfPermission( | ||
| context, | ||
| Manifest.permission.ACCESS_FINE_LOCATION | ||
| ) | ||
| } | ||
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| private fun requestFineLocationPermission() { | ||
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| if (fineLocationPermissionApproved()) { | ||
| activityListener?.displayLocationUI() | ||
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| } else { | ||
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| val provideRationale = shouldShowRequestPermissionRationale( | ||
| Manifest.permission.ACCESS_FINE_LOCATION | ||
| ) | ||
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| // If the user denied a previous request, but didn't check "Don't ask again", provide | ||
| // additional rationale. | ||
| if (provideRationale) { | ||
| Snackbar.make( | ||
| binding.frameLayout, | ||
| R.string.simple_permission_rationale, | ||
| Snackbar.LENGTH_LONG | ||
| ) | ||
| .setAction(R.string.ok) { | ||
| requestPermissions( | ||
| arrayOf(Manifest.permission.ACCESS_FINE_LOCATION), | ||
| REQUEST_FINE_LOCATION_PERMISSIONS_REQUEST_CODE | ||
| ) | ||
| } | ||
| .show() | ||
| } else { | ||
| Log.d(TAG, "Request fine location permission") | ||
| requestPermissions( | ||
| arrayOf(Manifest.permission.ACCESS_FINE_LOCATION), | ||
| REQUEST_FINE_LOCATION_PERMISSIONS_REQUEST_CODE | ||
| ) | ||
| } | ||
| } | ||
| } | ||
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| /** | ||
| * This interface must be implemented by activities that contain this | ||
| * fragment to allow an interaction in this fragment to be communicated | ||
| * to the activity and potentially other fragments contained in that | ||
| * activity. | ||
| * | ||
| * | ||
| * See the Android Training lesson [Communicating with Other Fragments] | ||
| * (http://developer.android.com/training/basics/fragments/communicating.html) | ||
| * for more information. | ||
| */ | ||
| interface Callbacks { | ||
| fun displayLocationUI() | ||
| } | ||
|
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| companion object { | ||
| private const val ARG_PERMISSION_REQUEST_TYPE = | ||
| "com.google.android.gms.location.sample.locationupdatesbackgroundkotlin.PERMISSION_REQUEST_TYPE" | ||
|
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| private const val REQUEST_FINE_LOCATION_PERMISSIONS_REQUEST_CODE = 34 | ||
|
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| /** | ||
| * Use this factory method to create a new instance of | ||
| * this fragment using the provided parameters. | ||
| * | ||
| * @param permissionRequestType Type of permission you would like to request. | ||
| * @return A new instance of fragment PermissionRequestFragment. | ||
| */ | ||
| @JvmStatic | ||
| fun newInstance(permissionRequestType: PermissionRequestType) = | ||
| PermissionRequestFragment().apply { | ||
| arguments = Bundle().apply { | ||
| putSerializable(ARG_PERMISSION_REQUEST_TYPE, permissionRequestType) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| enum class PermissionRequestType { | ||
| FINE_LOCATION, BACKGROUND_LOCATION | ||
| } |
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