So I'm looking to add a button to my app that would create and fill a reminder in the user's Reminders app, but I've found that I first need to request access to the user's Reminders app data. I've also found the way to do that has been changed with iOS 17 as explained here: https://developer.apple.com/documentation/eventkit/ekeventstore/4162273-requestfullaccesstoreminders
How do I use this function so that the prompt requesting for access to the user's Reminders app pops up at the launch of the app every time unless they've previously given permission?
Also what would be the function to create the reminder once I do have permissions? This is the code ChatGPT gave me to do so, but I just keep getting "Failed to create Reminder URL".
func createReminder() {
let reminderTitle = "******** Groceries"
var subtaskStrings: [String] = []
for ingredient in shoppingList {
subtaskStrings.append(ingredient)
}
let subtasks = subtaskStrings.map { (ingredient) -> [String: Any] in
return [
"title": ingredient,
"completed": false
]
}
let reminderData: [String: Any] = [
"title": reminderTitle,
"subtasks": subtasks
]
if let reminderURL = createURL(for: "x-apple-reminder://", with: reminderData) {
UIApplication.shared.open(reminderURL)
} else {
print("Failed to create Reminder URL")
}
}
Also I intend on expanding this function to the notes app. But im taking one step at a time.
Any help would be GREATLY appreciated. Thanks!
WeagleWeagle
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So I was trying to save an image in core data and created an NSManagedObject Subclass. After doing so I decided I didn't like it so I deleted the files, but now every time I run the project it creates a properties file with an error saying it can't find a UIImage in scope and the file isn't editable so I can't import UIKit. I've tried deleting the file in finder, deleting the whole project and then redownloading it from GitHub, but to no avail. Basically I want it to stop making the subclass every time I run the project.
Please help. Thanks!
How do you convert an image into binary data so that it can be saved in core data? I already have the image I simply need to add it to an entity in my core data model.
Any help would be greatly appreciated. Thanks!
I'm currently trying to save a selected image in core data as a type data, but I'm getting an error in the persistence file marked with a comment. I've included my code and any questions I will gladly answer. Thanks for any help!
Content View:
import SwiftUI
import PhotosUI
struct ContentView: View {
@ObservedObject var persistence = PersistenceController.shared
@State var selectedItems: [PhotosPickerItem] = []
@State var data: Data?
var body: some View {
NavigationView{
VStack{
Spacer()
VStack{
Spacer()
if let data = data, let uiimage = UIImage(data: data) {
Image(uiImage: uiimage)
.resizable()
.scaledToFit()
.frame(width: 250, height: 500)
}
Spacer()
}
Spacer()
PhotosPicker(selection: $selectedItems, maxSelectionCount: 1, matching: .images){
Text("Pick Photo")
}
.onChange(of: selectedItems){ newValue in
guard let item = selectedItems.first else{
return
}
item.loadTransferable(type: Data.self){ result in
switch result {
case .success(let data):
if let data = data{
self.data = data
} else {
print("Data is nil")
}
case .failure(let failure):
fatalError("\(failure)")
}
}
}
Spacer()
}
.navigationBarItems(trailing: addButton)
}
}
var addButton: some View {
Button(action: {
guard let item = selectedItems.first else{
return
}
item.loadTransferable(type: Data.self){ result in
switch result {
case .success(let data):
if let data = data{
persistence.addObject(image: data)
} else {
print("Data is nil")
}
case .failure(let failure):
fatalError("\(failure)")
}
}
}){
Text("Add Image").bold()
}
}
}
Persistence:
import Foundation
import CoreData
class PersistenceController: ObservableObject {
static let shared = PersistenceController()
let container: NSPersistentContainer
init(inMemory: Bool = false) {
container = NSPersistentContainer(name: "ReciPlanner")
if inMemory {
container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null")
}
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error as NSError? {
fatalError("Unresolved error \(error), \(error.userInfo)")
}
})
container.viewContext.automaticallyMergesChangesFromParent = true
}
func addObject(image: Data){
let context = container.viewContext
let object = Object(context: context) //Error: Thread 7: "An NSManagedObject of class 'Object' must have a valid NSEntityDescription."
object.item = image
}
func contextSave() {
let context = container.viewContext
if context.hasChanges {
do {
try context.save()
} catch {
print("**** ERROR: Unable to save context \(error)")
}
}
}
}
Data Model:
I'm currently trying to save a selected image in core data as a type data, but I'm getting an error in the persistence file marked with a comment. I've included my code and any questions I will gladly answer. Thanks for any help!
Content View:
import SwiftUI
import PhotosUI
struct ContentView: View {
@ObservedObject var persistence = PersistenceController.shared
@State var selectedItems: [PhotosPickerItem] = []
@State var data: Data?
var body: some View {
NavigationView{
VStack{
Spacer()
VStack{
Spacer()
if let data = data, let uiimage = UIImage(data: data) {
Image(uiImage: uiimage)
.resizable()
.scaledToFit()
.frame(width: 250, height: 500)
}
Spacer()
}
Spacer()
PhotosPicker(selection: $selectedItems, maxSelectionCount: 1, matching: .images){
Text("Pick Photo")
}
.onChange(of: selectedItems){ newValue in
guard let item = selectedItems.first else{
return
}
item.loadTransferable(type: Data.self){ result in
switch result {
case .success(let data):
if let data = data{
self.data = data
} else {
print("Data is nil")
}
case .failure(let failure):
fatalError("\(failure)")
}
}
}
Spacer()
}
.navigationBarItems(trailing: addButton)
}
}
var addButton: some View {
Button(action: {
guard let item = selectedItems.first else{
return
}
item.loadTransferable(type: Data.self){ result in
switch result {
case .success(let data):
if let data = data{
persistence.addObject(image: data)
} else {
print("Data is nil")
}
case .failure(let failure):
fatalError("\(failure)")
}
}
}){
Text("Add Image").bold()
}
}
}
Persistence:
import Foundation
import CoreData
class PersistenceController: ObservableObject {
static let shared = PersistenceController()
let container: NSPersistentContainer
init(inMemory: Bool = false) {
container = NSPersistentContainer(name: "ReciPlanner")
if inMemory {
container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null")
}
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error as NSError? {
fatalError("Unresolved error \(error), \(error.userInfo)")
}
})
container.viewContext.automaticallyMergesChangesFromParent = true
}
func addObject(image: Data){
let context = container.viewContext
let object = Object(context: context) //Error: Thread 7: "An NSManagedObject of class 'Object' must have a valid NSEntityDescription."
object.item = image
}
func contextSave() {
let context = container.viewContext
if context.hasChanges {
do {
try context.save()
} catch {
print("**** ERROR: Unable to save context \(error)")
}
}
}
}
Data Model:
So I have a TabView in my app and I want to go back to the original view when that tabItem is pressed. For example, when you open the App Store and go to the games tab, click on a game. It takes you to a navigation link to a new view. You can either go back to the first page by pressing the arrow, or by tapping the “games” tabItem again. I want to be able to press my tabItem in a subview of the same tab to go back to the original view that the tab is assigned to.
Any help would be greatly appreciated! Thanks.
So I know this is probably a stretch, but is there any way to airdrop an object from core data? From what I understand airdrop is only used with links, but is there a way to convert the data of a core data object into a file, convert the file into a link, send it via airdrop, and convert it back into a file, and then add that object from a file to another user's core data storage?
Any help would be greatly appreciated. Thanks!!
Given an image selected in a UIImagePickerController and saved as a UIImage, how can I save that image in a core data model using XCode 14 beta? I’ve only found videos from 2 years ago where they make their own persistence file which is outdated.
Any help would be greatly appreciated! Thanks.
I'm developing an app that has accounts with usernames and passwords to log in. So far I have found firebase, which doesn't look bad, but I'd like to know every available option and what they have to offer before committing to one.
I was curious if Apple had some sort of kit for developers for a login system. Like CloudKit for example, can CloudKit be used to store log in info and be reached when the user is logging in? And if not maybe other options for this.
Thanks for any help!
I'm developing an app that has accounts with usernames and passwords to log in. So far I have found firebase, which doesn't look bad, but I'd like to know every available option and what they have to offer before committing to one.
I was curious if Apple had some sort of kit for developers for a login system. And if not maybe other options for this.
Thanks for any help!
So I know this is probably a stretch, but is there any way to airdrop an object from core data? From what I understand airdrop is only used with links, but is there a way to convert the data of a core data object into a file, convert the file into a link, send it via airdrop, and convert it back into a file, and then add that object from a file to another user's core data storage?
Any help would be greatly appreciated. Thanks!!
So I have a TabView in my app and I want to go back yo the main view when that tabItem is pressed. For example, when you open the App Store and go to the games tab, click on a game. It takes you to a navigation link to a new view. You can either go back to the first page by pressing the arrow, or by tapping the “games” tabItem again. I want to be able to press my tabItem in a subview of the same tab to go back to the original view that the tab is assigned to.
So I know this is probably a stretch, but is there any way to airdrop an object from core data? From what I understand airdrop is only used with links, but is there a way to convert the data of a core data object into a file, convert the file into a link, send it via airdrop, and convert it back into a file, and then add that object from a file to another user's core data storage?
Any help would be greatly appreciated. Thanks!!
I need help optimizing and fixing my date list builder. Basically the user should be able to build a list of dates in a sheet and it be shown on the original view and go back to that page to add more. Dates should not be repeated hence why I use a set.
Issue: But when the user adds the first date it doesn't show until a second date is added. After some troubleshooting with print I've found that the problem isn't adding the first item to the list, but the ForEach not working until there is a second item.
I've included code for a visual representation of my goal. If you have any questions please leave a comment. Any help would be greatly appreciated. Thanks!
import SwiftUI
struct ContentView: View {
@State private var dates = Set<Date>()
@State private var isDatesShowing = false
var body: some View {
NavigationView{
Form{
Section(""){
addDatesButton
Section{
ForEach(dates.sorted(by: <),id: \.self){ date in
Text(date, style: .date)
.bold()
.foregroundColor(.white)
}
}
}
}
.navigationBarTitle("List of Dates")
.sheet(isPresented: $isDatesShowing){
AddToDateView(dates: $dates)
}
}
.preferredColorScheme(.dark)
}
var addDatesButton: some View{
Button(action: {
isDatesShowing.toggle()
}){
Text("Select Dates")
.bold()
}
}
}
struct AddToDateView: View {
@Environment(\.dismiss) var dismiss
@Binding var dates: Set<Date>
@State var date = Date()
var body: some View {
NavigationView{
Form{
DatePicker(selection: $date, in: Date.now..., displayedComponents: .date) {
Text("Select a date")
}
.datePickerStyle(WheelDatePickerStyle())
Button(action:{
dates.insert(date)
}){
Text("Add Date")
}
Section("Dates"){
ForEach(dates.sorted(by: <),id: \.self){ date in
Button(action: {
dates.remove(date)
}){
Text(date, style: .date)
.bold()
.foregroundColor(.white)
}
}
}
}
.cornerRadius(10)
.navigationBarItems(trailing: submitButton)
}
}
var submitButton: some View{
Button(action: {
dismiss()
}){
Text("Submit")
.bold()
}
}
}
So this project is pretty straightforward. I have an item. The use can create, get a closer look at, delete, or edit an item. For some reason, no matter how many different ways I try to do it, the edit part does not work. I've tried moving the sheet outside of the context menu (it only opens the bottom item), I've tried moving it under the list using the first index of the item (it crashes), and finally I've tried it the shown way and it just doesn't do anything. If anyone can come up with a better way to open the edit view for the correct item (preferably using a context menu, but something similar is acceptable) I would really appreciate it.
I've provided the project for a better understanding of what I'm trying to do. If you have any questions just leave a comment.
Any help would be greatly appreciated.
Content View:
struct ContentView: View {
@Environment(\.managedObjectContext) var managedObjContext
@ObservedObject var persistence = PersistenceController.shared
@State private var items = PersistenceController.shared.getItems()
@State private var showingEditView = false
@State private var showingAddView = false
var body: some View {
NavigationView{
List{
Section(""){
ForEach(items) { item in
NavigationLink(destination: ItemView(item: item)){
Text(item.name!)
}
.contextMenu{
Button(action: {
self.showingEditView.toggle()
}){
Text("Edit Item")
}
.sheet(isPresented: $showingEditView){
EditItemView(item: item)
.onDisappear(perform: {
items = persistence.getItems()
})
}
}
}
.onDelete(perform: { indexSet in
deleteItem(indexSet: indexSet)
})
}
}
.listStyle(InsetGroupedListStyle())
.cornerRadius(10)
.navigationBarTitle("My Items")
.navigationBarItems(trailing: addButton)
.onAppear(perform: {
items = persistence.getItems()
})
.sheet(isPresented: $showingAddView){
AddItemView()
.onDisappear(perform: {
items = persistence.getItems()
})
}
}
}
var addButton: some View {
Button(action: {
showingAddView.toggle()
}){
Text("Add an Item").bold()
}
}
func deleteItem(indexSet: IndexSet){
withAnimation{
indexSet.map {
items[$0]
}
.forEach(managedObjContext.delete)
persistence.contextSave()
items = persistence.getItems()
}
}
}
Item View:
struct ItemView: View{
@State var item: Item
var body: some View{
Text(item.name ?? "No Name")
}
}
Add View:
struct AddItemView: View{
@Environment(\.dismiss) var dismiss
@ObservedObject var persistence = PersistenceController.shared
@State private var name = ""
var body: some View {
Form{
TextField("Item Name", text: $name)
Button(action:{
persistence.addItem(name: name)
dismiss()
}){
Text("Add Item")
}
}
}
}
Edit View:
struct EditItemView: View{
@Environment(\.dismiss) var dismiss
@ObservedObject var persistence = PersistenceController.shared
@State var item: Item
@State private var name = ""
var body: some View {
Form{
TextField("Item Name", text: $name)
Button(action:{
persistence.addItem(name: name)
dismiss()
}){
Text("Add Item")
}
}
.onAppear{
name=item.name ?? "No Name"
}
}
}
Persistence File:
class PersistenceController : ObservableObject{
static let shared = PersistenceController()
let container: NSPersistentContainer
init(inMemory: Bool = false) {
container = NSPersistentContainer(name: "Test")
if inMemory {
container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null")
}
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error as NSError? {
fatalError("Unresolved error \(error), \(error.userInfo)")
}
})
container.viewContext.automaticallyMergesChangesFromParent = true
}
static var preview: PersistenceController = {
let result = PersistenceController(inMemory: true)
let viewContext = result.container.viewContext
for _ in 0..<10 {
let newItem = Item(context: viewContext)
newItem.id = UUID()
newItem.name = "Test"
}
do {
try viewContext.save()
} catch {
let nsError = error as NSError
fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
}
return result
}()
func getItems() -> [Item] {
let context = container.viewContext
var request = NSFetchRequest<Item>()
request = Item.fetchRequest()
request.entity = NSEntityDescription.entity(forEntityName: "Item", in: context)
do {
let items = try context.fetch(request)
if items.count == 0 { return []}
return items.sorted(by: {$0.name! > $1.name!})
} catch {
print("**** ERROR: items fetch failed \(error)")
return []
}
}
func addItem(name: String){
let context = container.viewContext
let item = Item(context: context)
item.id = UUID()
item.name = name
contextSave()
}
func contextSave() {
let context = container.viewContext
if context.hasChanges {
do {
try context.save()
self.objectWillChange.send()
} catch {
print("**** ERROR: Unable to save context \(error)")
}
}
}
}
Data Model: