loading

问题 I need to add a WKWebview to load web content, inside the content view of UIScrollView. I'm using the Apple code to load a web page, my outlet viewForWebview is linked correctly, and didFinish is called. class ViewController: UIViewController, WKUIDelegate, WKNavigationDelegate { var webView: WKWebView! @IBOutlet var viewForWebview: UIView! override func loadView() { super.loadView() let myConfiguration = WKWebViewConfiguration() webView = WKWebView(frame: .zero, configuration:

问题 I saw application are droping external table and creating again then loading the data and runnning msck command every time data load..what is the benefit of this on every time dropping and creating? 回答1: There is no benefit in dropping and recreating EXTERNAL table, because dropping table leaves data intact. Though there may be a benefit in dropping and re-creating MANAGED table because it will drop data as well. One possible scenario if you are running on S3: Dropping files early before the

问题 I'm trying to create an assets loader based on XMLHttpRequest only. I'm loading images with the help of XMLHttpRequest, getting it's responce of "blob" type and converting it to a normal html element. Something like this: var request = new XMLHttpRequest(); var image; var blob; request.onreadystatechange= function() { if (request.readyState === 4) { if (request.status === 200) { blob = request.response; image = new Image(); image.src = window.URL.createObjectURL(blob); } } }; request

问题 First of all i'm not a dev at any point ; I'll do my best to make me understood. I've created myself (a long time ago now) a portfolio, using tumblr platform. It may or may not be the greatest paltform, I know, but I like it this way and want to keep it, because it is easy for me to update it. I'm struggling right now, because since 1 or 2 months, my page is extremly slow to load. It can take frome 5 to 30sec ! I think there is an optimization problem, because even though it is displaying a

问题 First of all i'm not a dev at any point ; I'll do my best to make me understood. I've created myself (a long time ago now) a portfolio, using tumblr platform. It may or may not be the greatest paltform, I know, but I like it this way and want to keep it, because it is easy for me to update it. I'm struggling right now, because since 1 or 2 months, my page is extremly slow to load. It can take frome 5 to 30sec ! I think there is an optimization problem, because even though it is displaying a

来源： https://stackoverflow.com/questions/63134615/i-want-an-implit-loading-spinner-to-be-displayed-in-a-fragment-which-has-some-vi

来源： https://stackoverflow.com/questions/62991230/r-error-in-loading-packages-ape-and-rcpp

问题 I just downloaded Android Studio to make an app for my STEM competition. I tried making an app, opened the activity_main.xml file, but it is stuck on loading! It says, ` "Gradle: download gradle-5.6.4-all.zip...". 回答1: Firstly you need to try that option Go to Build-> Clean Project After clean your project complete Go to Build-> Rebuild Project IF that thing does not solve the problem then Please Go to File->Invalidate Cache/Restart-> Invalidate and restart Actually Android Studio makes a lot

问题 I just downloaded Android Studio to make an app for my STEM competition. I tried making an app, opened the activity_main.xml file, but it is stuck on loading! It says, ` "Gradle: download gradle-5.6.4-all.zip...". 回答1: Firstly you need to try that option Go to Build-> Clean Project After clean your project complete Go to Build-> Rebuild Project IF that thing does not solve the problem then Please Go to File->Invalidate Cache/Restart-> Invalidate and restart Actually Android Studio makes a lot

问题 I have developed a fragment-based app. I have a menu fragment with buttons,these buttons open a new fragment each one, replacing the last one. The issue is, that some fragment takes a while in opening cause it does some calls to asynctasks and populates some listviews. So when I press the button in the menu fragment, it keeps freezed 2 seconds until the new fragment appears replacing the menu fragment. I would like that a spinner or "loading.." dialog appears in that time. I have tested this