You need to trick the browser to use hardware acceleration more effectively. You can do this with an empty three-dimensional transform: -webkit-transform: translate3d(0, 0, 0) Particularly, you’ll need this on child elements that have a position:relative; declaration (or, just go all out and do it to all child elements). It is not a guaranteed fix, … Read more
Try one of the following, depending on your image format: UIImageJPEGRepresentation Returns the data for the specified image in JPEG format. NSData * UIImageJPEGRepresentation ( UIImage *image, CGFloat compressionQuality ); UIImagePNGRepresentation Returns the data for the specified image in PNG format NSData * UIImagePNGRepresentation ( UIImage *image ); Here the docs. EDIT: if you want … Read more
To anyone else who finds this older question, you can now download all old versions. Xcode -> Preferences -> Components (Click on Simulators tab). Install all the versions you want/need. To show all installed simulators: Target -> In dropdown “deployment target” choose the installed version with lowest version nr. You should now see all your … Read more
Here’s another canvas based version with variable width (based on drawing velocity) curves: demo at http://szimek.github.io/signature_pad and code at https://github.com/szimek/signature_pad.
Neither restarting Xcode nor restarting my Mac helped. Solution within Xcode: In Xcode, go to Preferences –> Accounts –> View Details Press the + symbol and select iOS Development Press the refresh button in the lower left corner (called Download all in Xcode 7) PS: Sometimes it may also help to delete invalid provisioning profiles: … Read more
Create a custom view for your container and override the pointInside: message to return false when the point isn’t within an eligible child view, like this: Swift: class PassThroughView: UIView { override func point(inside point: CGPoint, with event: UIEvent?) -> Bool { for subview in subviews { if !subview.isHidden && subview.isUserInteractionEnabled && subview.point(inside: convert(point, to: … Read more
Unfortunately, stringByAddingPercentEscapesUsingEncoding doesn’t always work 100%. It encodes non-URL characters but leaves the reserved characters (like slash / and ampersand &) alone. Apparently this is a bug that Apple is aware of, but since they have not fixed it yet, I have been using this category to url-encode a string: @implementation NSString (NSString_Extended) – (NSString … Read more
Core jQuery doesn’t have anything special for touch events, but you can easily build your own using the following events touchstart touchmove touchend touchcancel For example, the touchmove document.addEventListener(‘touchmove’, function(e) { e.preventDefault(); var touch = e.touches[0]; alert(touch.pageX + ” – ” + touch.pageY); }, false); This works in most WebKit based browsers (incl. Android). Here … Read more
Fixed it!! Hopefully this helps some people avoid a very frustrating couple hours. I solved this by: Clicking on the project name in the left pane (at the very top). This will bring up a new menu to the right, something like the project/ target editors in XCode 3. Click on Build Settings up at … Read more
Objective-C UIImage *btnImage = [UIImage imageNamed:@”image.png”]; [btnTwo setImage:btnImage forState:UIControlStateNormal]; Swift 5.1 let btnImage = UIImage(named: “image”) btnTwo.setImage(btnImage , for: .normal)