04 利用iOS SDK 各式型別生成東西，設定它的屬性和呼叫方法🕹

用 AVPlayer 播音樂

import AVFoundation

let url = URL(string: "https://audio-ssl.itunes.apple.com/itunes-assets/AudioPreview122/v4/6e/51/04/6e510466-e666-e2f4-3f61-bccb9d9c8b51/mzaf_11466994686483297798.plus.aac.p.m4a")
let player = AVPlayer(url: url!)
player.play()

播放歌曲：六哲- 畢竟深愛過

播放時會擷取第二段主歌，用程式讓音樂播放出來有種莫名的成就感誒🤣

查詢 iTunes 音樂電影的 preview 連結

用 AVPlayerViewController 播影片

import AVKit
import PlaygroundSupport

let url = URL(string: "https://movietrailers.apple.com/movies/dreamworks/puss-in-boots-the-last-wish/puss-In-boots-the-last-wish-trailer-1b_h1080p.mov")
let player = AVPlayer(url: url!)
let controller = AVPlayerViewController()
controller.player = player
PlaygroundPage.current.liveView = controller
player.play（）

現正播映：鞋貓劍客2 Puss In Boots: The Last Wish

可從網頁裡找到影片連結，從右鍵選單點選 Copy Link

Puss In Boots: The Last Wish

利用 SFSafariViewController 顯示網頁

import SafariServices
import PlaygroundSupport

let url = URL(string: "https://medium.com/@choumina838")
let controller = SFSafariViewController(url: url!)
PlaygroundPage.current.liveView = controller

顯示地圖 & 地圖標記的方法

import MapKit
import PlaygroundSupport

let mapView = MKMapView(frame: CGRect(x: 0, y: 0, width: 400, height: 400))
mapView.region = MKCoordinateRegion(center: CLLocationCoordinate2DMake(25.013847, 121.467027), latitudinalMeters: 500, longitudinalMeters: 500)
PlaygroundPage.current.liveView = mapView
mapView.mapType = .hybrid

//加入座標
let 板橋大遠百 = MKPointAnnotation()
板橋大遠百.title = "大遠百"
板橋大遠百.coordinate = CLLocationCoordinate2D(latitude: 25.013847, longitude: 121.467027)
板橋大遠百.subtitle = "很大的遠百"
mapView.addAnnotation(板橋大遠百)

iOS SDK 顯示地圖 & 地圖標記的方法

我最常逛街吃飯的地方🤭❤️

列印時間

import Foundation

//列印時間
var time = Date()
print(time)
//增加“秒”數，計算3小時50分20秒等於13820秒
time.addTimeInterval(13820)
print(time)

//時間變成特定格式字串
import Foundation
let now = Date()
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy/MM/dd/"
let dateString = dateFormatter.string(from: now)

//取得今天幾月幾號的數字
import Foundation

let today = Date()
let dateComponents = Calendar.current.dateComponents(in: TimeZone.current, from: today)
let month = dateComponents.month
let day = dateComponents.day

使用 AVSpeechSynthesizer 講話() 喵電感應😵‍💫

import AVFAudio

let utterance =  AVSpeechUtterance(string: "喵喵喵喵喵喵喵電感應，細胞在細胞在共鳴 內心在呼應")
//語言代碼：https://gist.github.com/vitoziv/9108407
utterance.voice = AVSpeechSynthesisVoice(language: "zh-TW")
//rate 0~1 數字越大越快
utterance.rate = 0.5
//volume 0~1
utterance.volume = 0.6
//pitch 0.5~2.0 數字越大pitch越高
utterance.pitchMultiplier = 0.6
let synthesizer = AVSpeechSynthesizer()
synthesizer.speak(utterance)

關鍵技術:

• 地圖: MapKit，MKMapView，MKCoordinateRegion
• 播音樂: AVFoundation，URL，AVPlayer
• 播影片: AVKit，AVPlayerViewController
• 網頁: SafariServices，SFSafariViewController
• 時間: Foundation，Date，DateFormatter，Calendar，DateComponents，Void
• App 講話: AVFAudio，AVSpeechSynthesizer，AVSpeechUtterance，AVSpeechSynthesisVoice
• playground: PlaygroundSupport，PlaygroundPage，liveView，type property