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Fix crash when tapping My Profile tab too quickly after app launch

This commit is contained in:
Shadowfacts 2020-10-19 18:41:38 -04:00
parent 744329dca2
commit 8a528936b8
Signed by untrusted user: shadowfacts
GPG Key ID: 94A5AB95422746E5
1 changed files with 31 additions and 12 deletions
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43
Tusker/Screens/Profile/ProfileViewController.swift
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@ -14,11 +14,17 @@ class ProfileViewController: UIPageViewController {
weak var mastodonController: MastodonController!
// todo: does this still need to be settable?
var accountID: String! {
// This property is optional because MyProfileViewController may not have the user's account ID
// when first constructed. It should never be set to nil.
var accountID: String? {
willSet {
if newValue == nil {
fatalError("Do not set ProfileViewController.accountID to nil")
}
}
didSet {
updateAccountUI()
pageControllers.forEach { $0.accountID = accountID }
loadAccount()
}
}
@ -50,7 +56,9 @@ class ProfileViewController: UIPageViewController {
}
deinit {
mastodonController.persistentContainer.account(for: accountID)?.decrementReferenceCount()
if let accountID = accountID {
mastodonController.persistentContainer.account(for: accountID)?.decrementReferenceCount()
}
}
override func viewDidLoad() {
@ -84,8 +92,12 @@ class ProfileViewController: UIPageViewController {
.receive(on: DispatchQueue.main)
.sink { [weak self] (_) in self?.updateAccountUI() }
loadAccount()
}
private func loadAccount() {
guard let accountID = accountID else { return }
if mastodonController.persistentContainer.account(for: accountID) != nil {
headerView.updateUI(for: accountID)
updateAccountUI()
} else {
let req = Client.getAccount(id: accountID)
@ -95,10 +107,6 @@ class ProfileViewController: UIPageViewController {
self.mastodonController.persistentContainer.addOrUpdate(account: account, incrementReferenceCount: true) { (account) in
DispatchQueue.main.async {
self.updateAccountUI()
self.headerView.updateUI(for: self.accountID)
self.pageControllers.forEach {
$0.updateUI(account: account)
}
}
}
}
@ -106,8 +114,17 @@ class ProfileViewController: UIPageViewController {
}
private func updateAccountUI() {
guard let account = mastodonController.persistentContainer.account(for: accountID) else { return }
guard let accountID = accountID,
let account = mastodonController.persistentContainer.account(for: accountID) else {
return
}
// Optionally invoke updateUI on headerView because viewDidLoad may not have been called yet
headerView?.updateUI(for: accountID)
navigationItem.title = account.displayNameWithoutCustomEmoji
pageControllers.forEach {
$0.updateUI(account: account)
}
}
private func selectPage(at index: Int, animated: Bool, completion: ((Bool) -> Void)? = nil) {
@ -177,13 +194,15 @@ class ProfileViewController: UIPageViewController {
// MARK: Interaction
@objc private func composeMentioning() {
if let account = mastodonController.persistentContainer.account(for: accountID) {
if let accountID = accountID,
let account = mastodonController.persistentContainer.account(for: accountID) {
compose(mentioningAcct: account.acct)
}
}
private func composeDirectMentioning() {
if let account = mastodonController.persistentContainer.account(for: accountID) {
if let accountID = accountID,
let account = mastodonController.persistentContainer.account(for: accountID) {
let draft = mastodonController.createDraft(mentioningAcct: account.acct)
draft.visibility = .direct
compose(editing: draft)