i have uiwebview , in scrollview, added uiimageview so:
self.webview.scrollview.addsubview(image) my problem when rotate device portrait landscape uiimageview not stay @ position set on scrollview, understand width , height of screen change, guess trying change the position on uiimageview appears did not change.
i have method in place:
override func viewwilltransitiontosize(size: cgsize, withtransitioncoordinator coordinator: uiviewcontrollertransitioncoordinator) { var newscrollviewframe = webview.scrollview.frame var newframe = webview.frame newframe.size.width = size.width newframe.size.height = size.height newscrollviewframe.size.width = size.width newscrollviewframe.size.height = size.height webview.frame = newframe webview.scrollview.frame = newscrollviewframe } the current code inside method resize uiwebview , scroll view, not uiimageviews in scrollview
any appreciated.
thanks,
i have tried following:
for views in webview.scrollview.subviews { if(views.iskindofclass(uiimageview)) { views.transform = cgaffinetransformmakerotation(cgfloat(m_pi)/2); } } but puts on uiimageview sideways on rotate
here how adding webview view:
webview = uiwebview() webview.frame = self.view.bounds webview.scrollview.frame = webview.frame webview.userinteractionenabled = true webview.scalespagetofit = true webview.becomefirstresponder() webview.delegate = self webview.scrollview.delegate = self self.view.addsubview(webview) i have half solved problem, doing following:
webview.translatesautoresizingmaskintoconstraints = false let horizontalconstraint = nslayoutconstraint(item: webview, attribute: nslayoutattribute.centerx, relatedby: nslayoutrelation.equal, toitem: view, attribute: nslayoutattribute.centerx, multiplier: 1, constant: 0) view.addconstraint(horizontalconstraint) let verticalconstraint = nslayoutconstraint(item: webview, attribute: nslayoutattribute.centery, relatedby: nslayoutrelation.equal, toitem: view, attribute: nslayoutattribute.centery, multiplier: 1, constant: 0) view.addconstraint(verticalconstraint) let widthconstraint = nslayoutconstraint(item: webview, attribute: nslayoutattribute.width, relatedby: nslayoutrelation.equal, toitem: nil, attribute: nslayoutattribute.notanattribute, multiplier: 0.1, constant: 500) view.addconstraint(widthconstraint) let heightconstraint = nslayoutconstraint(item: webview, attribute: nslayoutattribute.height, relatedby: nslayoutrelation.equal, toitem: nil, attribute: nslayoutattribute.notanattribute, multiplier: 1, constant: 500) view.addconstraint(heightconstraint) however now, uiwebview not full width or height :( sooooo close.
i tried this, uiimageview not remain in same spot.
let left = nslayoutconstraint(item: self.webview, attribute: .left, relatedby: .equal, toitem: self.view, attribute: .left, multiplier: 1, constant: 0) let right = nslayoutconstraint(item: self.webview, attribute: .right, relatedby: .equal, toitem: self.view, attribute: .right, multiplier: 1, constant: 0) let top = nslayoutconstraint(item: self.webview, attribute: .top, relatedby: .equal, toitem: self.view, attribute: .top, multiplier: 1, constant: 0) let bottom = nslayoutconstraint(item: self.webview, attribute: .bottom, relatedby: .equal, toitem: self.view, attribute: .bottom, multiplier: 1, constant: 0) nslayoutconstraint.activateconstraints([top, bottom, left, right]) i have tried adding constraints uiimageview
let stampview:stampannotation = stampannotation(imageicon: uiimage(named: "approved.png"), location: cgpointmake(currentpoint.x, currentpoint.y)) self.webview.scrollview.addsubview(stampview) let left = nslayoutconstraint(item: stampview, attribute: .left, relatedby: .equal, toitem: self.webview.scrollview, attribute: .left, multiplier: 1, constant: 0) let right = nslayoutconstraint(item: stampview, attribute: .right, relatedby: .equal, toitem: self.webview.scrollview, attribute: .right, multiplier: 1, constant: 0) let top = nslayoutconstraint(item: stampview, attribute: .top, relatedby: .equal, toitem: self.webview.scrollview, attribute: .top, multiplier: 1, constant: 0) let bottom = nslayoutconstraint(item: stampview, attribute: .bottom, relatedby: .equal, toitem: self.webview.scrollview, attribute: .bottom, multiplier: 1, constant: 0) nslayoutconstraint.activateconstraints([top, bottom, left, right]) same result, uiimageview not stay in same spot.
update
my webview:
webview = uiwebview() webview.userinteractionenabled = true webview.scalespagetofit = true webview.becomefirstresponder() webview.delegate = self webview.scrollview.delegate = self self.view.addsubview(webview) webview.loadrequest(nsurlrequest(url:url)) webview.gesturerecognizers = [pinchrecognizer, panrecognizer] webview.translatesautoresizingmaskintoconstraints = false let left = nslayoutconstraint(item: webview, attribute: .left, relatedby: .equal, toitem: self.view, attribute: .left, multiplier: 1, constant: 0) let right = nslayoutconstraint(item: webview, attribute: .right, relatedby: .equal, toitem: self.view, attribute: .right, multiplier: 1, constant: 0) let top = nslayoutconstraint(item: webview, attribute: .top, relatedby: .equal, toitem: self.view, attribute: .top, multiplier: 1, constant: 0) let bottom = nslayoutconstraint(item: webview, attribute: .bottom, relatedby: .equal, toitem: self.view, attribute: .bottom, multiplier: 1, constant: 0) nslayoutconstraint.activateconstraints([top, bottom, left, right]) uiimageview
stampview.translatesautoresizingmaskintoconstraints = false let left = nslayoutconstraint(item: stampview, attribute: .left, relatedby: .equal, toitem: self.webview.scrollview, attribute: .left, multiplier: 1, constant: 100) let right = nslayoutconstraint(item: stampview, attribute: .right, relatedby: .equal, toitem: self.webview.scrollview, attribute: .right, multiplier: 1, constant: 0) let top = nslayoutconstraint(item: stampview, attribute: .top, relatedby: .equal, toitem: self.webview.scrollview, attribute: .top, multiplier: 1, constant: 100) let bottom = nslayoutconstraint(item: stampview, attribute: .bottom, relatedby: .equal, toitem: self.webview.scrollview, attribute: .bottom, multiplier: 1, constant: 0) let width = nslayoutconstraint(item: stampview, attribute: nslayoutattribute.width, relatedby: nslayoutrelation.equal, toitem: nil, attribute: nslayoutattribute.notanattribute, multiplier: 0.1, constant: 150) let height = nslayoutconstraint(item: stampview, attribute: nslayoutattribute.height, relatedby: nslayoutrelation.equal, toitem: nil, attribute: nslayoutattribute.notanattribute, multiplier: 1, constant: 73) nslayoutconstraint.activateconstraints([left, right, top, bottom, width, height]) i need figure out math have device @ position of touch. (in percentages ?)
i think these things easier without using autolayout. this, recomend using viewdidlayoutsubviews(). here code:
override func viewdidlayoutsubviews() { super.viewdidlayoutsubviews() webview.frame = view.bounds let screen = uiscreen.mainscreen().fixedcoordinatespace //these values give rect half size of screen , centered. let width = screen.bounds.width / 2 let height = screen.bounds.height / 2 let x = (screen.bounds.width - width) / 2 let y = (screen.bounds.height - height) / 2 let absoluterect = cgrect(x: x, y: y, width: width, height: height) let stamprect = screen.convertrect(absoluterect, tocoordinatespace: webview) stampview.frame = stamprect //change orientation of image switch uidevice.currentdevice().orientation { case .landscapeleft: stampview.image = uiimage(cgimage:originalimage.cgimage!, scale:originalimage.scale, orientation: uiimageorientation.left) break case .landscaperight: stampview.image = uiimage(cgimage:originalimage.cgimage!, scale:originalimage.scale, orientation: uiimageorientation.right) break default: stampview.image = uiimage(cgimage:originalimage.cgimage!, scale:originalimage.scale, orientation: uiimageorientation.up) break } } i doing several things here...first set webviewframe. next, helpful here define absolute coordinate system relative screen. when phone orientation changes, values of screen not change (allowing keep imageview in same place.) next define desired frame stampview, convert absolute frame equivalent inside scrollview (it's superview) , assign stampview. finally, if want image in stampview oriented correctly, need change image orientation. cgaffinetransformmakerotation works if view square, can make more general changing imageorientation within stampview. requires property original image:
let originalimage = uiimage(named: "image_name")! finally, because viewwilllayoutsubviews() not called landscape landscape transitions, following:
override func viewwilltransitiontosize(size: cgsize, withtransitioncoordinator coordinator: uiviewcontrollertransitioncoordinator) { view.setneedslayout() } this code doesn't make prettiest transitions, should layout problems.
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