In the sandboxed world of iOS development sharing data between applications can prove difficult Since iOS developers can’t share data directly through the file system, they need to find alternate solutions for their applications. Some common solutions include: UIDocumentInteractionController UIActivityViewController Shared Keychain Access Custom URL Scheme Web Service iCloud API UIDocumentInteractionController: Allows the user to … Read more
Starting from the iOS 6.0 you can do it like that: NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:@”Hello. That is a test attributed string.”]; [str addAttribute:NSBackgroundColorAttributeName value:[UIColor yellowColor] range:NSMakeRange(3,5)]; [str addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(10,7)]; [str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@”HelveticaNeue-Bold” size:20.0] range:NSMakeRange(20, 10)]; label.attributedText = str;
Here is code that works … – (IBAction) renderScrollViewToImage { UIImage* image = nil; UIGraphicsBeginImageContext(_scrollView.contentSize); { CGPoint savedContentOffset = _scrollView.contentOffset; CGRect savedFrame = _scrollView.frame; _scrollView.contentOffset = CGPointZero; _scrollView.frame = CGRectMake(0, 0, _scrollView.contentSize.width, _scrollView.contentSize.height); [_scrollView.layer renderInContext: UIGraphicsGetCurrentContext()]; image = UIGraphicsGetImageFromCurrentImageContext(); _scrollView.contentOffset = savedContentOffset; _scrollView.frame = savedFrame; } UIGraphicsEndImageContext(); if (image != nil) { [UIImagePNGRepresentation(image) writeToFile: @”/tmp/test.png” … Read more
A lot of mobile browsers deliberately do not support position:fixed; on the grounds that fixed elements could get in the way on a small screen. The Quirksmode.org site has a very good blog post that explains the problem: http://www.quirksmode.org/blog/archives/2010/12/the_fifth_posit.html Also see this page for a compatibility chart showing which mobile browsers support position:fixed;: http://www.quirksmode.org/m/css.html (but … Read more
I had same issue with apple devices like iPhone and iPad, I turned off the low power mode and it worked and you should also include playsinline attribute in video tag like this: <video class=”video-background” autoplay loop muted playsinline> It only worked when including playsinline.
The iPhoneOS does capture onscroll events, except not the way you may expect. One-finger panning doesn’t generate any events until the user stops panning—an onscroll event is generated when the page stops moving and redraws—as shown in Figure 6-1. Similarly, scroll with 2 fingers fires onscroll only after you’ve stopped scrolling. The usual way of … 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
UPDATE: Since a lot of time has passed after this answer and new methods/APIs have been added, please check the updated answers below for Swift etc; Since I’ve not used them myself, I can’t vouch for them. Original answer: I found the following solution working for me: -(uint64_t)getFreeDiskspace { uint64_t totalSpace = 0; uint64_t totalFreeSpace … Read more
Here’s a picture explaining the difference between pageY and clientY. Same for pageX and clientX, respectively. pageX/Y coordinates are relative to the top left corner of the whole rendered page (including parts hidden by scrolling), while clientX/Y coordinates are relative to the top left corner of the visible part of the page, “seen” through browser … Read more
For iOS 13: Use the .shadowColor property If this property is nil or contains the clear color, the bar displays no shadow For instance: let navigationBar = navigationController?.navigationBar let navigationBarAppearance = UINavigationBarAppearance() navigationBarAppearance.shadowColor = .clear navigationBar?.scrollEdgeAppearance = navigationBarAppearance For iOS 12 and below: To do this, you should set a custom shadow image. But for … Read more