The iPhone 8 was officially released on September 22, 2017. The release date was announced during a press event held by Apple at the Steve Jobs Theater in Cupertino, California.
The iPhone 8 featured a new glass and aluminum design, with a 4.7-inch Retina HD display and a 12MP camera. It also introduced new features such as wireless charging, improved battery life, and the A11 Bionic chip, which provided faster performance and improved efficiency.
In terms of code examples, the iPhone 8 introduced ARKit, a new framework that allows developers to easily create augmented reality experiences for iOS. Here's an example of how to create a simple AR experience using ARKit:
import ARKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let configuration = ARWorldTrackingConfiguration()
configuration.planeDetection = .horizontal
let arView = ARSCNView(frame: self.view.frame)
arView.session.run(configuration)
let scene = SCNScene()
arView.scene = scene
let node = SCNNode()
node.geometry = SCNBox(width: 0.1, height: 0.1, length: 0.1, chamferRadius: 0)
node.geometry?.firstMaterial?.diffuse.contents = UIColor.red
node.position = SCNVector3(0, 0, -0.5)
scene.rootNode.addChildNode(node)
self.view.addSubview(arView)
}
}
This example creates an ARSCNView, which is a subclass of UIView that is used to display AR content. It sets up a session with the ARWorldTrackingConfiguration and starts it running. A simple box geometry is created and added to the scene, and the box is positioned in front of the camera.
Another example is the new HEVC (High Efficiency Video Coding) video codec which has been added to the iPhone 8. This codec allows to store video at half the file size of H.264, while maintaining the same visual quality. Here's an example of how to use HEVC codec to compress a video file:
import AVFoundation
let asset = AVAsset(url: videoURL)
let exportSession = AVAssetExportSession(asset: asset, presetName: AVAssetExportPresetHEVC)
exportSession?.outputURL = outputURL
exportSession?.outputFileType = .mp4
exportSession?.exportAsynchronously {
// Handle export completion
}
This example creates an AVAsset from a video file URL, and then creates an AVAssetExportSession using the HEVC preset. The output URL and file type are set, and the export is started asynchronously.
In conclusion, the iPhone 8 was a significant release for Apple, introducing new features such as wireless charging and augmented reality, as well as new tools for developers like ARKit and HEVC codec. The above code examples show how these new features can be used in practice.
In addition to the new features mentioned in the previous article, the iPhone 8 also introduced some other notable improvements. One of these is the new camera system, which featured a 12MP sensor with larger and faster pixels, as well as a new color filter. This improved the camera's low-light performance and resulted in more vibrant and accurate colors. The front-facing camera also received an upgrade, with a new 7MP sensor that enables better low-light performance and 1080p HD video recording.
Another improvement was the introduction of True Tone technology, which automatically adjusts the white balance of the display to match the ambient light in the room. This results in a more natural and comfortable viewing experience, especially in low-light environments.
The iPhone 8 also received an upgrade in terms of storage capacity, with a maximum of 256GB. This is double the storage capacity of the previous generation iPhone 7. This allows users to store more photos, videos, music, and other files on their device without having to rely on cloud storage.
One of the biggest changes in the iPhone 8 was the addition of wireless charging capability, which allows users to charge their device by simply placing it on a wireless charging mat. This feature is made possible by the inclusion of a new glass back, which enables the device to charge wirelessly using the Qi wireless charging standard. This feature was a first for Apple and made the device more convenient to charge, as users no longer had to plug in a cable.
Another new feature is the introduction of the A11 Bionic chip, which is the most powerful chip ever put in a smartphone by Apple. It is a 64-bit, 6-core CPU and a 3-core GPU. The chip is built using a 10-nanometer process, which allows for more efficient performance and longer battery life. The A11 Bionic chip provides up to 30% faster CPU performance and up to 70% faster GPU performance than the previous A10 chip.
Lastly, the iPhone 8 also featured the new iOS 11 operating system, which brought a number of new features and improvements. One of the most notable was the redesigned Control Center, which allowed users to access frequently used controls more easily. Another was the new Files app, which provided a central location for all of the user's files, including those stored in iCloud and other cloud services.
In conclusion, the iPhone 8 introduced a number of new features and improvements, including a new camera system, True Tone technology, wireless charging, A11 Bionic chip, and iOS 11. These features made the device more powerful and convenient for users, and also provided new tools and opportunities for developers.
Popular questions
-
When was the iPhone 8 officially released?
Answer: The iPhone 8 was officially released on September 22, 2017. -
What new design features did the iPhone 8 introduce?
Answer: The iPhone 8 featured a new glass and aluminum design, with a 4.7-inch Retina HD display. -
What is ARKit and what does it allow developers to do?
Answer: ARKit is a new framework that allows developers to easily create augmented reality experiences for iOS. -
Can you provide an example of how to create a simple AR experience using ARKit?
Answer:
import ARKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let configuration = ARWorldTrackingConfiguration()
configuration.planeDetection = .horizontal
let arView = ARSCNView(frame: self.view.frame)
arView.session.run(configuration)
let scene = SCNScene()
arView.scene = scene
let node = SCNNode()
node.geometry = SCNBox(width: 0.1, height: 0.1, length: 0.1, chamferRadius: 0)
node.geometry?.firstMaterial?.diffuse.contents = UIColor.red
node.position = SCNVector3(0, 0, -0.5)
scene.rootNode.addChildNode(node)
self.view.addSubview(arView)
}
}
- What is HEVC codec and how can it be used to compress a video file?
Answer: HEVC (High Efficiency Video Coding) is a codec that allows to store video at half the file size of H.264, while maintaining the same visual quality. Here's an example of how to use HEVC codec to compress a video file:
import AVFoundation
let asset = AVAsset(url: videoURL)
let exportSession = AVAssetExportSession(asset: asset, presetName: AVAssetExportPresetHEVC)
exportSession?.outputURL = outputURL
exportSession?.outputFileType = .mp4
exportSession?.exportAsynchronously {
// Handle export completion
}
This example creates an AVAsset from a video file URL, and then creates an AVAssetExportSession using the HEVC preset. The output URL and file type are set, and the export is started asynchronously.
Tag
iOS
