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Xcode12でios12対応のアプリをビルドする方法
iOS12がビルドできる最大のバージョンのXcodeは12.5.1だ。
しかし、Xcode12だとXcodeデフォルトで入っているテンプレートがiOS12に
対応していない。これはiOS13以上で動作するUISCreenを使っているからだ。
Xcodeのテンプレートガリガリ書くのは結構しんどそう、かつXcode12.5.1でiOS12のためのテンプレートがネットに出回っていないので、
結構みんなが使っているやつ無いから、直接書き換えるのが現実的だと思う。
よくわからん不具合嫌だし。
ということで、 Xcodeでプロジェクトを作った時点でのファイルを書き換えていこうと思う。
編國
AppDelegate
AppDelegateは下のように変更していく。
objectivecの場合
ヘッダーファイル
AppDelegate.h
#import <UIKit/UIKit.h>
#import <CoreData/CoreData.h>
@interface AppDelegate : UIResponder <UIApplicationDelegate>
// 下記の1行を追加。UIWindowを追加。
@property (strong, nonatomic) UIWindow * window;
@property (readonly, strong) NSPersistentContainer *persistentContainer;
- (void)saveContext;
@end
ソースファイル
AppDelegate.m
#import "AppDelegate.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
return YES;
}
// UIScreenの代わりに下記のコードを追加。
- (void)applicationWillResignActive:(UIApplication *)application {
// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
// Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
}
- (void)applicationDidEnterBackground:(UIApplication *)application {
// Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
// If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}
- (void)applicationWillEnterForeground:(UIApplication *)application {
// Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
}
- (void)applicationDidBecomeActive:(UIApplication *)application {
// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}
- (void)applicationWillTerminate:(UIApplication *)application {
// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
// Saves changes in the application's managed object context before the application terminates.
[self saveContext];
}
// #pragma mark -UIScreenSession lifecycleの部分は削除。
// #pragma mark - UISceneSession lifecycle
//
//
//- (UISceneConfiguration *)application:(UIApplication *)application configurationForConnectingSceneSession:(UISceneSession *)connectingSceneSession options:(UISceneConnectionOptions *)options {
// // Called when a new scene session is being created.
// // Use this method to select a configuration to create the new scene with.
// return [[UISceneConfiguration alloc] initWithName:@"Default Configuration" sessionRole:connectingSceneSession.role];
//}
//
//
//- (void)application:(UIApplication *)application didDiscardSceneSessions:(NSSet<UISceneSession *> *)sceneSessions {
// // Called when the user discards a scene session.
// // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
// // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
// }
#pragma mark - Core Data stack
@synthesize persistentContainer = _persistentContainer;
- (NSPersistentContainer *)persistentContainer {
// The persistent container for the application. This implementation creates and returns a container, having loaded the store for the application to it.
@synchronized (self) {
if (_persistentContainer == nil) {
_persistentContainer = [[NSPersistentContainer alloc] initWithName:@"jrekwoujsklrewr"];
[_persistentContainer loadPersistentStoresWithCompletionHandler:^(NSPersistentStoreDescription *storeDescription, NSError *error) {
if (error != nil) {
// Replace this implementation with code to handle the error appropriately.
// abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
/*
Typical reasons for an error here include:
* The parent directory does not exist, cannot be created, or disallows writing.
* The persistent store is not accessible, due to permissions or data protection when the device is locked.
* The device is out of space.
* The store could not be migrated to the current model version.
Check the error message to determine what the actual problem was.
*/
NSLog(@"Unresolved error %@, %@", error, error.userInfo);
abort();
}
}];
}
}
return _persistentContainer;
}
#pragma mark - Core Data Saving support
- (void)saveContext {
NSManagedObjectContext *context = self.persistentContainer.viewContext;
NSError *error = nil;
if ([context hasChanges] && ![context save:&error]) {
// Replace this implementation with code to handle the error appropriately.
// abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
NSLog(@"Unresolved error %@, %@", error, error.userInfo);
abort();
}
}
@end
swiftの場合
ヘッダーファイルとソースファイルと別れていないので下のようになる。
AppDelegate.swift
import UIKit
import CoreData
@main
class AppDelegate: UIResponder, UIApplicationDelegate {
// 下記の1行を追加。UIWindowを追加。
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
return true
}
// UIScreenの代わりに下記のコードを追加。
func applicationWillResignActive(_ application: UIApplication) {
// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
// Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
}
func applicationDidEnterBackground(_ application: UIApplication) {
// Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
// If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}
func applicationWillEnterForeground(_ application: UIApplication) {
// Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
}
func applicationDidBecomeActive(_ application: UIApplication) {
// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}
func applicationWillTerminate(_ application: UIApplication) {
// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
// Saves changes in the application's managed object context before the application terminates.
self.saveContext()
}
// もともとあったMARK: UIScreenSession lifecycleの部分は削除。
// MARK: UISceneSession Lifecycle
// func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
// // Called when a new scene session is being created.
// // Use this method to select a configuration to create the new scene with.
// return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
// }
// func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
// // Called when the user discards a scene session.
// // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
// // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
// }
// Coredataの部分が微妙に違うので変更。
lazy var persistentContainer: NSPersistentContainer = {
/*
The persistent container for the application. This implementation
creates and returns a container, having loaded the store for the
application to it. This property is optional since there are legitimate
error conditions that could cause the creation of the store to fail.
*/
let container = NSPersistentContainer(name: "SwiftMojava")
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error as NSError? {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
/*
Typical reasons for an error here include:
* The parent directory does not exist, cannot be created, or disallows writing.
* The persistent store is not accessible, due to permissions or data protection when the device is locked.
* The device is out of space.
* The store could not be migrated to the current model version.
Check the error message to determine what the actual problem was.
*/
fatalError("Unresolved error \(error), \(error.userInfo)")
}
})
return container
}()
// Core Data Stackも微妙にソースコードが違うので削除
// // MARK: - Core Data stack
// lazy var persistentContainer: NSPersistentCloudKitContainer = {
// /*
// The persistent container for the application. This implementation
// creates and returns a container, having loaded the store for the
// application to it. This property is optional since there are legitimate
// error conditions that could cause the creation of the store to fail.
// */
// let container = NSPersistentCloudKitContainer(name: "jjrewiofjsd")
// container.loadPersistentStores(completionHandler: { (storeDescription, error) in
// if let error = error as NSError? {
// // Replace this implementation with code to handle the error appropriately.
// // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
// /*
// Typical reasons for an error here include:
// * The parent directory does not exist, cannot be created, or disallows writing.
// * The persistent store is not accessible, due to permissions or data protection when the device is locked.
// * The device is out of space.
// * The store could not be migrated to the current model version.
// Check the error message to determine what the actual problem was.
// */
// fatalError("Unresolved error \(error), \(error.userInfo)")
}
// })
// return container
// }()
// MARK: - Core Data Saving support
func saveContext () {
let context = persistentContainer.viewContext
if context.hasChanges {
do {
try context.save()
} catch {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
let nserror = error as NSError
fatalError("Unresolved error \(nserror), \(nserror.userInfo)")
}
}
}
}
SceneDelegate
Objectibe-cの場合
使わないため、SceneDelegate.h, SceneDelegate.mともに削除。
swiftの場合
objective-cと同様に使わないためSceneDelegate.swiftを削除。
プロジェクトファイル
General -> Deployment InfoでiOSのバージョンを12.3にする。
まとめ
自分はスマホアプリ開発は全くの無知なので、
もっと楽な方法あるか、ちゃんと探せていないなら教えていただけたら幸いです。
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