情境：
到目前为止，我们已经使用了VS 2010安装项目。将新版本迁移到Wix。
问题：
//
// CameraViewController.swift
// MatchFriend
//
// Created by Tarek Ezzat Abdallah on 10/1/16.
// Copyright © 2016 Tarek. All rights reserved.
//
import UIKit
import AVFoundation
class CameraViewController: UIViewController{
var captureSession: AVCaptureSession?
var previewLayer : AVCaptureVideoPreviewLayer?
var stillImageOutput: AVCaptureStillImageOutput?
var imageToSend: UIImage!
// If we find a device we'll store it here for later use
var captureDevice : AVCaptureDevice?
@IBOutlet weak var cameraView: UIView!
var captureButton: UIButton!
var flipCam:UIButton!
var camPos:String = "back"
func capture(_ sender: AnyObject)
{
if let videoConnection = stillImageOutput?.connection(withMediaType: AVMediaTypeVideo)
{
stillImageOutput?.captureStillImageAsynchronously(from: videoConnection)
{
(imageDataSampleBuffer, error) -> Void in
let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(imageDataSampleBuffer)
let dataProvider = CGDataProvider(data: imageData as! CFData)
let cgImageRef = CGImage(jpegDataProviderSource: dataProvider!, decode: nil, shouldInterpolate: true, intent: CGColorRenderingIntent.defaultIntent )
let image = UIImage(cgImage: cgImageRef!, scale: 1.0, orientation: UIImageOrientation.right)
}
}
}
override func viewDidLoad()
{
super.viewDidLoad()
cameraView.backgroundColor = .clear
self.view.backgroundColor = .clear
captureButton = UIButton(frame: CGRect(x: 160, y: 580, width: 80, height: 80))
captureButton.addTarget(self, action: #selector(CameraViewController.capture(_:)), for: UIControlEvents.touchUpInside)
flipCam = UIButton(frame: CGRect(x: 0, y: 0, width: 40, height: 40))
flipCam.addTarget(self, action: #selector(CameraViewController.flip), for: UIControlEvents.touchUpInside)
self.view.addSubview(captureButton)
self.view.addSubview(flipCam)
captureButton.backgroundColor = UIColor.red
NotificationCenter.default.addObserver(self, selector: #selector(CameraViewController.rotated), name: NSNotification.Name.UIDeviceOrientationDidChange, object: nil)
// let backCamera = AVCaptureDevice.defaultDevice(withMediaType: AVMediaTypeVideo)
camStart(camPos)
setViews()
}
func camStart(_ position: String)
{
captureSession = AVCaptureSession()
captureSession?.sessionPreset = AVCaptureSessionPresetHigh
let videoDevices = AVCaptureDevice.devices(withMediaType: AVMediaTypeVideo)
var capDevice:AVCaptureDevice = AVCaptureDevice.defaultDevice(withMediaType: AVMediaTypeVideo)
if(position == "back")
{
for device in videoDevices!
{
let device = device as! AVCaptureDevice
if device.position == AVCaptureDevicePosition.back
{
capDevice = device
break
}
}
}
else{
for device in videoDevices!
{
let device = device as! AVCaptureDevice
if device.position == AVCaptureDevicePosition.front
{
capDevice = device
break
}
}
}
// var error : NSError?
let input = try? AVCaptureDeviceInput(device: capDevice)
if (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
previewLayer!.frame = self.view.layer.frame
previewLayer!.videoGravity = AVLayerVideoGravityResizeAspectFill
cameraView.layer.addSublayer(previewLayer!)
captureSession?.startRunning()
}
}
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
captureButton.frame = CGRect(x: self.view.frame.width/2 - 40, y: self.view.frame.height - 70 - 40, width: 80, height: 80)
flipCam.frame = CGRect(x: self.view.frame.width/6 - 40, y: self.view.frame.height - 60 - 40, width: 80, height: 80)
//add the image to flip camera
//flipCam.setImage(UIImage(named: "switchCam"), for: UIControlState.normal)
flipCam.setTitle("flip", for: .normal)
if previewLayer != nil{
previewLayer!.frame = self.view.frame
}
}
override func viewWillAppear(_ animated: Bool)
{
super.viewWillAppear(true)
setViews()
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func setViews()
{
captureButton.layer.cornerRadius = captureButton.layer.bounds.width/2
captureButton.layer.borderWidth = 1
}
func configureDevice()
{
let error: NSErrorPointer? = nil
if let device = captureDevice {
do {
try captureDevice!.lockForConfiguration()
} catch let error1 as NSError
{
error??.pointee = error1
}
device.focusMode = .locked
device.unlockForConfiguration()
}
}
func flip()
{
captureSession?.stopRunning()
if camPos == "back"
{
camPos = "front"
}
else{
camPos = "back"
}
camStart(camPos)
}
func rotated() {
if UIDeviceOrientationIsLandscape(UIDevice.current.orientation) {
if UIDevice.current.orientation == UIDeviceOrientation.landscapeLeft{
previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.landscapeRight
}
else
{
previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.landscapeLeft
}
}
if UIDeviceOrientationIsPortrait(UIDevice.current.orientation) {
if UIDevice.current.orientation == UIDeviceOrientation.portrait{
previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.portrait
}
else
{
previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.portraitUpsideDown
}
}
}
}
将升级视为卸载+全新安装，而不仅仅是升级。
详细信息：
Msiexec Guid UpgradeCode标记MajorUpgrade和Upgrade代替UpgradeVersion 注意 - 系统正确识别两个产品，并在设置过程中自动删除旧产品。
问题是，旧产品是作为卸载而不是升级运行的。 我有一个自定义操作集，可以在卸载期间运行，这将删除用户数据。现在问题是，由于某种原因，在升级过程中会触发此自定义操作。
如果MajorUpgrade或2010 to 2010，只有Wix to Wix <才会发生此问题。 / p>
方案
我在日志中注意到的唯一区别 -
对于VS 2010至2010
2010 to Wix2010年至WIX -
Action ended: MsiUnpublishAssemblies. Return value 1.
MSI (s) (90:A4) : Skipping action: _[guid].uninstall.SetProperty (condition is false)
MSI (s) (90:A4): Skipping action: _[guid].uninstall (condition is false)
MSI (s) (90:A4) [21:54:10:299]: Doing action: UnpublishComponents
Action start 21:54:10: UnpublishComponents.
我很清楚为什么会发生这种卸载。任何帮助表示赞赏。
答案 0 :(得分：2)
没有足够的信息可以确定，但这应该有所帮助：
主要升级始终会卸载正在升级的产品。这是基于新ProductCode，相同UpgradeCode和增量版本以及相同安装上下文的主要升级的定义。这意味着您的问题取决于您对“卸载自定义操作”的假设
Visual Studio“卸载”自定义操作并非真正“卸载”自定义操作。当组件（由组件id表示）被移除时调用它们。从VS 2010构建到VS 2010构建时，组件ID保持不变（内部引用计数）并且组件仍然安装。 WiX构建也是如此。当您从构建到WiX的VS 2010构建时，组件ID可能已更改，因此将删除VS 2010构建的MSI中的组件，因此将调用自定义操作。
换句话说，问题很可能是VS 2010版本中的组件ID（由于VS 2010甚至没有暗示它们的存在而无法看到）与WiX构建中的组件ID不同。