我有一个自定义UIImagePickerController，在被解雇后，变量设置为nil正在接收内存警告，并且它导致我的应用程序崩溃。
这是我的UIImagePickerController
import UIKit
import MobileCoreServices
class Picker: UIImagePickerController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
var myView = PickerView(frame: UIScreen.mainScreen().bounds)
var takenImages = [UIImage]()
var takenImagesThumbs = [UIImage]()
override init() {
super.init()
myView.picker = self
self.delegate = self
self.sourceType = UIImagePickerControllerSourceType.Camera
self.mediaTypes = [kUTTypeImage]
self.showsCameraControls = false
self.cameraOverlayView = myView
self.cameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Photo
self.setFullscreen()
myView.viewing()
}
override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?) {
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
}
required init(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
func setFullscreen(){
let screenSize = UIScreen.mainScreen().bounds.size
let scale = screenSize.height / screenSize.width*3/4
let translate = CGAffineTransformMakeTranslation(0,(screenSize.height - screenSize.width*4/3)*0.5);
let fullScreen = CGAffineTransformMakeScale(scale, scale);
self.cameraViewTransform = CGAffineTransformConcat(fullScreen, translate)
}
var endFunc:((images:[UIImage], thumbs:[UIImage]) -> Void)!
var ViewController:UIViewController!
func show(vc:UIViewController, complete: ((images:[UIImage], thumbs:[UIImage]) -> Void)) {
vc.presentViewController(self, animated: true, completion: nil)
endFunc = complete
ViewController = vc
}
var closeQueue = dispatch_queue_create("areyouareyou", nil)
func close() {
let priority = DISPATCH_QUEUE_PRIORITY_DEFAULT
dispatch_async(dispatch_get_global_queue(priority, 0)) {
dispatch_async(self.closeQueue) {
self.endFunc(images: self.takenImages, thumbs: self.takenImagesThumbs)
self.takenImagesThumbs = [UIImage]()
self.takenImages = [UIImage]()
self.myView.update(self.takenImages.count)
}
}
self.removeFromParentViewController()
self.dismissViewControllerAnimated(true, completion: nil)
}
var resizequeue = dispatch_queue_create("hangingthree", nil)
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
myView.takeButton.enabled = true
let nfo = info as NSDictionary
var image:UIImage = nfo.valueForKey(UIImagePickerControllerOriginalImage) as UIImage
takenImages.append(image)
self.myView.update(self.takenImages.count)
let priority = DISPATCH_QUEUE_PRIORITY_DEFAULT
dispatch_async(dispatch_get_global_queue(priority, 0)) {
dispatch_async(self.resizequeue) {
var theimg = Common.resizeImage(image, scaledToSize: CGSizeMake(UIScreen.mainScreen().bounds.width / 3, UIScreen.mainScreen().bounds.width / 3))
self.takenImagesThumbs.append(theimg)
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
println(self.takenImages.count)
}
}
这是我的overlayview
import UIKit
class PickerView: UIView {
var picker:Picker!
var takeButton = UIButton()
var takeButtonPath = UIBezierPath()
var takeButtonLayer = CAShapeLayer()
var takeButtonIconLayer = CAShapeLayer()
var closeButton = UIButton()
var closeButtonBgPath = UIBezierPath()
var closeButtonBgLayer = CAShapeLayer()
var bottomBar:UIVisualEffectView!
var imageCount = UILabel()
override init() {
super.init()
}
override init(frame: CGRect) {
super.init(frame: frame)
}
required init(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
func viewing() {
var colors = Colors()
self.backgroundColor = UIColor.clearColor()
imageCount.frame = CGRectMake(62, 0, 30, 31)
imageCount.text = "0"
imageCount.textAlignment = NSTextAlignment.Center
imageCount.font = UIFont(name: "Arial-BoldMT", size: 20)
}
override func drawRect(rect: CGRect) {
let context = UIGraphicsGetCurrentContext()
var colors = Colors()
CGContextSetLineWidth(context, 2)
CGContextSetStrokeColorWithColor(context, colors.pickerStrokeColor.CGColor)
CGContextSetFillColorWithColor(context, colors.pickerFillColor.CGColor)
var point = CGPointMake((self.bounds.width / 2), self.bounds.height - 30)
var start = CGFloat(Common.radians(0))
var end = CGFloat(Common.radians(360))
var moon = UIBezierPath()
moon.addArcWithCenter(point, radius: 45, startAngle: end, endAngle: start, clockwise: true)
moon.stroke()
moon.fill()
var left = UIBezierPath()
left.moveToPoint(CGPointMake(0, point.y))
left.addLineToPoint(CGPointMake(point.x - 45, point.y))
left.stroke()
var right = UIBezierPath()
right.moveToPoint(CGPointMake(self.bounds.width, point.y))
right.addLineToPoint(CGPointMake(point.x + 45, point.y))
right.stroke()
btnCloseing()
btnTakeing()
bottomBaring()
//add
self.addSubview(closeButton)
self.addSubview(takeButton)
}
func bottomBaring() {
var point = CGPointMake((self.bounds.width / 2), self.bounds.height - 30)
var frame = CGRectMake(0, point.y, self.bounds.width, self.bounds.height - point.y)
//blur
var blurEffect = UIBlurEffect(style: UIBlurEffectStyle.Dark)
bottomBar = UIVisualEffectView(effect: blurEffect)
bottomBar.frame = frame
//blur add
self.addSubview(bottomBar)
//vib
var vibEffect = UIVibrancyEffect(forBlurEffect: blurEffect)
var vibView = UIVisualEffectView(effect: vibEffect)
vibView.frame = CGRectMake(0, 0, frame.width, frame.height)
//add
vibView.contentView.addSubview(imageCount)
bottomBar.contentView.addSubview(vibView)
}
func btnCloseing() {
var start = CGFloat(Common.radians(0))
var end = CGFloat(Common.radians(360))
var colors = Colors()
closeButtonBgPath.addArcWithCenter(CGPointMake(0, 0), radius: 20, startAngle: start, endAngle: end, clockwise: true)
closeButtonBgLayer.bounds = CGRectMake(-40, -40, 40, 40)
closeButtonBgLayer.path = closeButtonBgPath.CGPath
closeButtonBgLayer.fillColor = colors.pickerCloseBtnFill.CGColor
closeButtonBgLayer.strokeColor = colors.pickerStrokeColor.CGColor
closeButton.frame = CGRectMake(self.bounds.width - 50, 10, 40, 40)
closeButton.layer.addSublayer(closeButtonBgLayer)
closeButton.setTitle("X", forState: UIControlState.Normal)
closeButton.setTitleColor(colors.pickerStrokeColor, forState: UIControlState.Normal)
closeButton.titleLabel?.font = UIFont(name: "Arial-BoldMT", size: 25)
closeButton.addTarget(self, action: "closePhoto", forControlEvents: UIControlEvents.TouchDown)
}
func btnTakeing() {
var start = CGFloat(Common.radians(0))
var end = CGFloat(Common.radians(360))
var point = CGPointMake((self.bounds.width / 2), self.bounds.height - 30)
takeButtonPath.addArcWithCenter(CGPointMake(0, 0), radius: 40, startAngle: start, endAngle: end, clockwise: true)
takeButtonLayer.bounds = CGRectMake(-80, -90, 80, 80)
takeButtonLayer.path = takeButtonPath.CGPath
takeButtonLayer.fillColor = Colors().pickerTakeBtnFill.CGColor
takeButtonLayer.strokeColor = UIColor.clearColor().CGColor
takeButtonIconLayer.contents = UIImage(named: "CameraIcon")?.CGImage
takeButtonIconLayer.frame = CGRectMake(26, 30, 30, 30)
takeButton.frame = CGRectMake(point.x - 40, point.y - 50, 80, 100)
takeButton.layer.addSublayer(takeButtonLayer)
takeButton.layer.addSublayer(takeButtonIconLayer)
takeButton.addTarget(self, action: "takePhoto", forControlEvents: UIControlEvents.TouchDown)
takeButton.addTarget(self, action: "takePhotoEnd", forControlEvents: UIControlEvents.TouchUpInside)
takeButton.addTarget(self, action: "takePhotoEnd", forControlEvents: UIControlEvents.TouchUpOutside)
}
func takePhoto() {
self.takeButton.enabled = false
takeButtonLayer.fillColor = Colors().pickerTakeBtnFillClick.CGColor
picker.takePicture()
}
func takePhotoEnd() {
takeButtonLayer.fillColor = Colors().pickerTakeBtnFill.CGColor
}
func closePhoto() {
picker.close()
}
func update(count: Int) {
imageCount.text = String(count)
}
}
任何人都知道问题或如何解决问题？
答案 0 :(得分：0)
您的问题是您正在继承UIImagePickerController这是被禁止的。阅读Apple documentation：
重要
UIImagePickerController类仅支持纵向模式。此类旨在按原样使用，不支持子类化。此类的视图层次结构是私有的，不得修改，但有一个例外。您可以为cameraOverlayView属性分配自定义视图，并使用该视图显示其他信息或管理相机界面与代码之间的交互。