iOS

Since a button has an image and a title, it's easier to implement this design with UIButton. But it's not obvious how to custom the button, let's see how this works out. First, create relate code about the style and layout. lazy var button:

HandyJSON is a handy Swift JSON-Object serialization/deserialization library. Sometimes there is some special key in you JSON data, for example: { "description": "Hi" } Since description is a property of NSObject for "a textual representation of an object", it's

At times, there's some strange auto layout issue with tableHeaderView, the subview is either compressed or stretched. I check and re-check all constraints were set up correctly, it's especially frustrating. Here a container view come to rescue, the auto layout gets back to order

Recently I'm building a page like this: There's a dynamic collectionView in every UITableViewCell, for the self-sizing UITableViewCells to work, override systemLayoutSizeFitting: class TableViewCell: UITableViewCell { @IBOutlet weak var collectionView: UICollectionView! override func systemLayoutSizeFitting(_ targetSize: CGSize, withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority, verticalFittingPriority: UILayoutPriority) -> CGSize { collectionView.

Recently I'm building a page to display long images for product descriptions. The image was split in several short images for better performance. I download the image in ProductImageCell and use closure didUpdateHeight to tell the UITableView to refresh the cell's height. class ProductImageCell:

When writing Swift code, it's easy to to create retain cycles if you're not careful. It usually happens when a closure has a strong reference to self and self has a strong referenc to the the closure. So just need to take note of

Recently I'm using Eureka for building forms dynamically. I show or hide some rows based on API data and the animation is strange, I couldn't find a way to disable it with Eureka APIs for aniamtion customization. But in the end I found two

I'm working with Firebase Database in an app. I found out it doesn't work with Shadowsocks proxy in the latest iOS 11 beta, I have to use VPN. This happens on both device and simulator.

Today I learned something new about UIViewController, I thought it's a bug but it's not. Here is the situation, I have a ManageBankCardViewController which manage ManageBankCardView and AddBankCardView and swith between the two views based on current user's state. Build and run, I got

离线HTML 1.使用Ono解析HTML，将其中的图片、JS保存到本地 2.使用以下方法加载本地的HTML，通过baseURL指定相关资源的路径 - (void)loadHTMLString:(NSString *)string baseURL:(NSURL *)baseURL 自定义NSURLProtocol 可以通过继承NSURLProtocol来自定义网络请求 [NSURLProtocol registerClass:[CustomURLProtocol class]]; 比如，使WebView中的某类链接显示默认的本地图片 @interface CustomURLProtocol () <NSURLConnectionDelegate> @end @implementation CustomURLProtocol + (BOOL)canInitWithRequest:(NSURLRequest *)request { if (IS_REQUEST_YOU_WANT) { return YES; } return

1.Add chandan's method removeUnescapedCharacter to class AFURLResponseSerialization in AFNetworking 2.0. 2.Add responseString = [self removeUnescapedCharacter:responseString]; under NSString *responseString = [[NSString alloc] initWithData:data encoding:stringEncoding]; in method - (id)responseObjectForResponse:(NSURLResponse *)response data:(NSData *)data error:(NSError *__autoreleasing *)error