不完整效果圖如下
不完整效果圖
今天了解學(xué)習(xí)ScrollView
1趟脂、搭建UI
這里我們使用XIB
拖入ScrollView，添加約束例衍，上下左右 0
拖入
<br />
約束
約束
-
gif中可以看到有三個(gè)View昔期，這里我們創(chuàng)建三個(gè)VC，并且使用XIB
1佛玄、command + n
2硼一、選擇IOS下的Source
3、選擇Cocoa Touch Class
4梦抢、語言選擇Swift
5般贼、勾上XIB
如圖
重復(fù)1-5步創(chuàng)建三個(gè)VC
三個(gè)VC
-
分別在三個(gè)VC的XIB中添加一個(gè)ImageView，在CenterViewController中再添加一個(gè)View奥吩，用于顯示視頻采集
如圖
在分別拖線到各自的VC中哼蛆。
來到ViewController中,加載三個(gè)VC，并且把VC的View添加到ScrollView中
let leftVC :LeftViewController = LeftViewController(nibName: "LeftViewController", bundle: nil)
let centerVC :CenterViewController = CenterViewController(nibName: "CenterViewController", bundle: nil)
let rightVC :RightViewController = RightViewController(nibName: "RightViewController", bundle: nil)
self.addChildViewController(leftVC)
self.scrollView.addSubview(leftVC.view)
leftVC.didMoveToParentViewController(self)
self.addChildViewController(centerVC)
self.scrollView.addSubview(centerVC.view)
centerVC.didMoveToParentViewController(self)
self.addChildViewController(rightVC)
self.scrollView.addSubview(rightVC.view)
rightVC.didMoveToParentViewController(self)
var centerFrame : CGRect = centerVC.view.frame
centerFrame.origin.x = self.view.frame.width
centerVC.view.frame = centerFrame
var rightFrame : CGRect = rightVC.view.frame
rightFrame.origin.x = self.view.frame.width * 2
rightVC.view.frame = rightFrame
self.scrollView.contentSize = CGSize(width: self.view.frame.width * 3, height: 0)
self.scrollView.pagingEnabled = true
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2圈驼、為第一個(gè)ImageView添加手勢(shì)人芽、動(dòng)畫
進(jìn)入LeftViewController，如果你的命名不同就自行對(duì)應(yīng)绩脆。
添加手勢(shì)
let pan: UIPinchGestureRecognizer? = UIPinchGestureRecognizer(target: self, action: #selector(LeftViewController.pinchEvent(_:)))
imageView.userInteractionEnabled = true
imageView.addGestureRecognizer(pan!)
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實(shí)現(xiàn)手勢(shì)方法
func pinchEvent(pinch : UIPinchGestureRecognizer){
//手勢(shì)
let scale : CGFloat = pinch.scale
pinch.view?.transform = CGAffineTransformMakeScale(scale, scale)
//動(dòng)畫
if pinch.state == UIGestureRecognizerState.Ended {
UIView.animateWithDuration(0.5, delay: 0, usingSpringWithDamping: 0.35, initialSpringVelocity: 0, options: UIViewAnimationOptions.CurveLinear, animations: {
pinch.view?.transform = CGAffineTransformIdentity
}, completion: { (a) in
print("animation finish")
})
}
}
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3萤厅、視頻采集
這里有概念介紹：大神地址
import UIKit
import AVFoundation
class CenterViewController: UIViewController , UIImagePickerControllerDelegate,UINavigationControllerDelegate{
@IBOutlet weak var cameraView: UIView!
@IBOutlet weak var imageView: UIImageView!
var captureSession : AVCaptureSession?
var stillImageOutPut : AVCaptureStillImageOutput?
var preViewLayer : AVCaptureVideoPreviewLayer?
override func viewDidLoad() {
super.viewDidLoad()
UIApplication.sharedApplication().statusBarHidden = true
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func viewDidAppear(animated: Bool) {
super.viewWillAppear(animated)
preViewLayer?.frame = self.view.bounds
}
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
//創(chuàng)建對(duì)象
captureSession = AVCaptureSession()
//分辨率
captureSession?.sessionPreset = AVCaptureSessionPreset1920x1080
let backCamera = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeVideo)
var error : NSError?
var input : AVCaptureDeviceInput!
do{
input = try AVCaptureDeviceInput(device: backCamera)}
catch let error1 as NSError{
error = error1
input = nil
}
if error == nil && captureSession?.canAddInput(input) != nil
{
captureSession?.addInput(input)
stillImageOutPut = AVCaptureStillImageOutput()
stillImageOutPut?.outputSettings = [AVVideoCodecKey : AVVideoCodecJPEG]
if captureSession?.canAddOutput(stillImageOutPut) != nil
{
captureSession?.addOutput(stillImageOutPut)
preViewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
preViewLayer?.videoGravity = AVLayerVideoGravityResizeAspect
preViewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.Portrait
cameraView.layer.addSublayer(preViewLayer!)
captureSession?.startRunning()
}
}
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
super.touchesBegan(touches, withEvent: event)
//點(diǎn)擊屏幕保存圖片
showImage()
}
var didTakePhoto = Bool()
func showImage(){
if didTakePhoto == true {
self.imageView.hidden = true
didTakePhoto = false
}else{
didTakePhoto = true
captureSession?.startRunning()
clickScreenTakePhoto()
}
}
func clickScreenTakePhoto(){
if let videoConnection = stillImageOutPut?.connectionWithMediaType(AVMediaTypeVideo) {
//方向
videoConnection.videoOrientation = AVCaptureVideoOrientation.Portrait
stillImageOutPut?.captureStillImageAsynchronouslyFromConnection(videoConnection, completionHandler: { (sampleBuffer, error) in
if sampleBuffer != nil{
let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(sampleBuffer)
let dataProvider = CGDataProviderCreateWithCFData(imageData)
let cgImageRef = CGImageCreateWithJPEGDataProvider(dataProvider, nil, true, CGColorRenderingIntent.RenderingIntentDefault)
let image = UIImage(CGImage: cgImageRef!, scale: 1.0, orientation: UIImageOrientation.Right)
self.imageView.image = image
self.imageView.hidden = false
UIImageWriteToSavedPhotosAlbum(image, self, #selector(CenterViewController.image(_:didFinishSavingWithError:contextInfo:)),nil)
}
})
}
}
func image(image: UIImage, didFinishSavingWithError: NSError?, contextInfo: AnyObject) {
if didFinishSavingWithError == nil {
showSuccessView()
return
}
print("OK")
}
func showSuccessView(){
let alert : UIAlertController? = UIAlertController(title: "提示", message: "圖片保存成功咯", preferredStyle: UIAlertControllerStyle.Alert)
let action: UIAlertAction = UIAlertAction(title: "確定", style: UIAlertActionStyle.Cancel) { (cancel) in
}
alert?.addAction(action)
self.presentViewController(alert!, animated: true, completion: nil)
}
}
OK,到這里就完成今天的東西了
