ios

How do I keep a WKWebView object from crashing?

我怕爱的太早我们不能终老 提交于 2021-02-20 14:17:04
问题 Scenario I'm building an iOS application in Swift. One feature is to have a live video feed as the application background. The video feed is originating from a Raspberry Pi on a local network using sudo motion . Motion is successfully hosting the feed on default port 8081 . The Swift app has a WKWebView object with the source pointing to my Raspberry Pi's motion port. Suspected Issue The webpage at port 8081 is constantly refreshing to load the most recent frame from the camera. Problem When

How do I keep a WKWebView object from crashing?

拜拜、爱过 提交于 2021-02-20 14:08:43
问题 Scenario I'm building an iOS application in Swift. One feature is to have a live video feed as the application background. The video feed is originating from a Raspberry Pi on a local network using sudo motion . Motion is successfully hosting the feed on default port 8081 . The Swift app has a WKWebView object with the source pointing to my Raspberry Pi's motion port. Suspected Issue The webpage at port 8081 is constantly refreshing to load the most recent frame from the camera. Problem When

How do I keep a WKWebView object from crashing?

夙愿已清 提交于 2021-02-20 14:04:48
问题 Scenario I'm building an iOS application in Swift. One feature is to have a live video feed as the application background. The video feed is originating from a Raspberry Pi on a local network using sudo motion . Motion is successfully hosting the feed on default port 8081 . The Swift app has a WKWebView object with the source pointing to my Raspberry Pi's motion port. Suspected Issue The webpage at port 8081 is constantly refreshing to load the most recent frame from the camera. Problem When

仅使用CSS就可以提高页面渲染速度的4个技巧

我与影子孤独终老i 提交于 2021-02-20 13:52:19
本文将重点介绍4个可以用来提高页面渲染速度的CSS技巧。 1. Content-visibility 一般来说,大多数Web应用都有复杂的UI元素,它的扩展范围超出了用户在浏览器视图中看到的内容。在这种情况下,我们可以使用内容可见性( content-visibility )来跳过屏幕外内容的渲染。如果你有大量的离屏内容,这将大大减少页面渲染时间。 这个功能是最新增加的功能之一,也是对提高渲染性能影响最大的功能之一。虽然 content-visibility 接受几个值,但我们可以在元素上使用 content-visibility: auto; 来获得直接的性能提升。 让我们考虑一下下面的页面,其中包含许多不同信息的卡片。虽然大约有12张卡适合屏幕,但列表中大约有375张卡。正如你所看到的,浏览器用了1037ms来渲染这个页面 。 下一步,您可以向所有卡添加 content-visibility 。 在这个例子中,在页面中加入 content-visibility 后,渲染时间下降到150ms,这是6倍以上的性能提升。 正如你所看到的,内容可见性是相当强大的,对提高页面渲染时间非常有用。根据我们目前所讨论的东西,你一定是把它当成了页面渲染的银弹。 content-visibility 的限制 然而,有几个领域的内容可视性不佳。我想强调两点,供大家参考。 此功能仍处于试验阶段。

How to get the name of an enumeration case by its raw value in Swift 4?

拈花ヽ惹草 提交于 2021-02-20 13:28:08
问题 Using Xcode 9.4.1 and Swift 4.1 Having an enumeration with multiple cases from type Int, how can I print the case name by its rawValue? public enum TestEnum : UInt16{ case ONE = 0x6E71 case TWO = 0x0002 case THREE = 0x0000 } I am accessing the Enum by the rawValue: print("\nCommand Type = 0x" + String(format:"%02X", someObject.getTestEnum.rawValue)) /*this prints: Command Type = 0x6E71 if the given Integer value from someObject.TestEnum is 28273*/ Now I additionally want to print "ONE" after

Apple Push Notification service must incorporate the new root certificate (AAACertificateServices) - APNS certificate update [duplicate]

拥有回忆 提交于 2021-02-20 08:34:18
问题 This question already has an answer here : Apple Push Notification service server certificate update (1 answer) Closed 3 days ago . I got this mail from Apple. "On March 29, 2021, token and certificate-based HTTP/2 connections to the Apple Push Notification service must incorporate the new root certificate (AAACertificateServices 5/12/2020) which replaces the old GeoTrust Global CA root certificate. To ensure a seamless transition and to avoid push notification delivery failures, verify that

Apple Push Notification service must incorporate the new root certificate (AAACertificateServices) - APNS certificate update [duplicate]

帅比萌擦擦* 提交于 2021-02-20 08:34:02
问题 This question already has an answer here : Apple Push Notification service server certificate update (1 answer) Closed 3 days ago . I got this mail from Apple. "On March 29, 2021, token and certificate-based HTTP/2 connections to the Apple Push Notification service must incorporate the new root certificate (AAACertificateServices 5/12/2020) which replaces the old GeoTrust Global CA root certificate. To ensure a seamless transition and to avoid push notification delivery failures, verify that

The iOS 13.0 simulator runtime is not available

北慕城南 提交于 2021-02-20 06:25:24
问题 I installed the Xcode-11-beta along with macOS 10.15 beta. At first I can play with SwiftUI preview normally. But after I tried to move the Xcode-beta from the ~/Downloads directory where I initially installed it, to /Applications , the preview can't work. Here is the error: So I moved it back to ~/Downloads , hoping things will go well as before. But it gives the same error. After this, I reinstalled it and I still got this error. Can anyone help me fix it? The content of diagnostics report

How to integrate Paypal Payment Method in iOS App Swift 4?

生来就可爱ヽ(ⅴ<●) 提交于 2021-02-20 05:14:07
问题 I'm working on an app in which PayPal payment gateway is to integrate. As such I have gone through several blog but did not found it helpful. So if any can suggest something that would be very helpful. 回答1: For integrating Paypal payment into your swift ios application, you would need to use Braintree SDK which provides all the inbuilt functions for implementation. Its always better to implement client-server architecture for payment where the server would have the business logic and client

iOS: display firebase data in tableView

落花浮王杯 提交于 2021-02-20 04:49:48
问题 I try to display data from a Firebase database into my tableView. The code worked using "Tabs View Controller", but for the purpose of the project I had to include a TableView in a classic ViewController. Here is the code that should get the data from the database, and further include it in the tableview. import UIKit import Firebase import FirebaseAuth import FirebaseDatabase class NewsfeedViewController: UIViewController, UITableViewDataSource, UITableViewDelegate { var ref