loading | 易学教程

Android: How to know if a Fragment has finished loading entire content?

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问题 Is there anyway to know that a Fragment has finish loading the entire contents of the Fragment ? The reason I'm asking is because in the onResume state when I put the application in the background I Re-Load the Fragment by executing an AsyncTask but I only want to Re-Load the Fragment that was put in the background only if the Fragment has not finished loading the entire contents of the layout (images, shapes, data, etc...) is there anyway to know if the Fragment has been fully loaded? 回答1:

Chrome Extension : Modify DOM before loading

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问题 My Chrome Extension should modify a DOM element before the DOM is fully constructed, and in the best scenario, right after this DOM element is constructed. For example, if I have a in my document, I want to wait until it is constructed, then directly modify it, before the rest of the DOM is constructed. But I only managed to access the DOM before the element is constructed and after the entire DOM is constructed. So how do I listen to the construction of a special element ? 回答1: You can use

UIActivityIndicatorView not showing until after loading done

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问题 I have a button on the currently navigated to viewcontroller, connected to an IBAction. In the IBAction I create a UIActivityIndicatorView as usual, with [self.view addSubView], then load some pictures. I've tried setNeedsDisplay on the indicator view, the view controller, and the window, but it still loads the pictures before showing the indicator, which of course is quite useless to me. So I'm looking for a way to either force an instant redraw (which when I think a little more about it is

How to detect when a image is loaded, that is provided via props, and change state in React?

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问题 I want to load a different image(fake avatar) while the final avatar image is loading. The idea is to detect when the prop image is loaded and change a state. Is it possible? Some ideas? Thank you! class ImageUser extends React.Component { constructor(props) { super(props); this.state = {userImageLoaded: false}; let imageSrc = ""; if (!this.props.userImage) { imageSrc = this.props.noUserImage; } else { imageSrc = this.props.userImage; } this.loadingImage = <img className={styles.imageUser}

Show a loading gif while iframe page content loads

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问题 I searched and tried various solutions to what I'm trying to achieve, to no avail... I'm working on a photography website which has a high volume of images loading in an iframe, which takes a bit of time to load. I want to show a loading gif image in the iframe until the images have finished loading. Here is the website in question, http://www.chriszachary.com/portfolio I'm using a javascript motion gallery to allow the user to control image scrolling with their mouse. The images do not

Wordpress website loading too slow

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问题 My wordpress website LINK takes 1 minute or more to load any page(front end and dashboard admin panel).The problem suddenly started today.I tried to deactivate all new installed plugin and some old plugins also.Didn't worked.Any suggestion ? 回答1: I have found the answer: after the last update of wordpress 4.0.1, 90% of wordpress websites are broken(very slow speed of loading).I will wait for the wordpress team to fix this. 来源： https://stackoverflow.com/questions/27078327/wordpress-website

css缓冲loading效果

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loading的css样式 <!DOCTYPE html> <html xmlns:th="http://www.thymeleaf.org" xmlns:http="http://www.w3.org/1999/xhtml" xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4"> <head th:fragment="loading"> <style> #loading{ background-color: #FFFF; height: 100%; width: 100%; position: fixed; z-index: 999; margin-top: 0px; top: 0px; } #loading-center{ width: 100%; height: 100%; position: relative; } #loading-center-absolute { position: absolute; left: 50%; top: 50%; height: 150px; width: 150px; margin-top: -75px; margin-left: -75px; -moz-border-radius: 50% 50% 50% 50%; -webkit-border

How to link or load shared libraries (.so) in Objective C?

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问题 I added a shared library (.so) to target in the Build Phases.How to use the functions in the library? Including the headers in the Controllers is fine. or do I need to explicitly load the library.Please let me know how to use .so in Objective C. 来源： https://stackoverflow.com/questions/15784593/how-to-link-or-load-shared-libraries-so-in-objective-c

How to display bitmap from internal storage?

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问题 I saved my bitmap images in my internal storage but i can't redisplay it. I've been researching for a long time but i've not find yet. public static void saveImages(Activity activity) throws IOException { for (int i=0; i<categories.getItems().length; i++) { OutputStream os2 = activity.openFileOutput(categories.getItems()[i].getName(), Context.MODE_WORLD_READABLE); OutputStreamWriter osw2 = new OutputStreamWriter(os2); Bitmap bmp = ((BitmapDrawable)categories.getItems()[i].getCategoryImage())

How can I improve the loading speed of this web portfolio?

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问题 I've been playin with Google's Page Speed, and it gave me some tips to improve the loading speed of my site: http://alexchen.zxq.net/ (original hosting) http://alexchen.co.nr (URL redirection) I minified some Javascript files (I didn't compress them), and optimized some images, but it still kind of slow. I'm not very sure if I'm overloading something or its because i'm using a shared free hosting (I know, I have to get a .net or .com , but I'm having problems with my credit card right now).