mobile

问题 Up to now, I've been including the line for the Apple Touch icon in my head like this: <link rel="apple-touch-icon" href="/apple-touch-icon.png"> However, in the Q&A "What are the correct pixel dimensions for an apple-touch-icon?" it is stated in the accepted answer that three images are now needed according to Apple's guidelines. So how would one go about inserting these into the head section of the code? 回答1: Minimalist solution - Recommended A common practice is to create a single 180x180

问题 I wrote an HTML5 database that abstracts localStorage, indexedDB, and WebSQL. Using straight HTML5 my database options look like this: IE10 - indexedDB - 1GB max FireFox - indexedDB - unlimited Safari - WebSQL - 50MB max Chrome - IndexedDB (or Web SQL) - unlimited (with the HTML5 Quota API ref1, ref2) Opera - WebSQL (until they switch to webkit?) - unlimited I would like to expand the maximum database size using PhoneGap or the Quota API. From PhoneGap's documentation it looks like the

问题 I came across this answer which is brilliant: In iPhone iOS6 and from Android ICS onwards, HTML5 has the following tag which allows you to take pictures from your device: <input type="file" accept="image/*" capture="camera"> Capture can take values like camera, camcorder and audio. Is it possible to take this one step further by using ajax of some kind to immediately upload photo after its taken? For example, using my phone, once I tap on the input, it then opens the camera which will

问题 I'm currently learning React and I am trying to figure out how to use it with Redux for building a mobile app. I'm kind of confused on how the two are related/usable together. For example, I completed this tutorial in React https://www.raywenderlich.com/99473/introducing-react-native-building-apps-javascript, but now I want to play around with adding some reducers/actions to that app and I am not sure where those would tie in with what I've already done. 回答1: React is a UI framework that

问题 I'm a bit confused here. When I'm debugging a React Native Application, I usually enable both Hot Reloading and Live Reloading . I want to know what is the difference between them? 回答1: Live reloading reloads or refreshes the entire app when a file changes. For example, if you were four links deep into your navigation and saved a change, live reloading would restart the app and load the app back to the initial route. Hot reloading only refreshes the files that were changed without losing the

问题 I'm looking for a list of all screen aspect ratios for popular Android based Phones and Tablets. 回答1: In case anyone wanted more of a visual reference: Decimal approximations reference table: ╔══════════════════════════╦════════════════════════╦════════════════════════╗ ║ aspect ratio ║ decimal approx. ║ decimal approx. ║ ║ [long edge x short edge] ║ [short edge/long edge] ║ [long edge/short edge] ║ ╠══════════════════════════╬════════════════════════╬════════════════════════╣ ║ 19.5 x 9 ║ 0

问题 I would like to create a shared footer (e.g. footer.html) that can be used by all of the pages in my jQuery Mobile application. However, I cannot find a way to get jQuery to refresh the styles in the footer navbar after loading the html from the external file. After thoughts would be greatly appreciated. Footer.html: <div data-role="navbar" class="CSS" data-grid="d" id="footerNav"> <ul > <li ><a href="#" id="a" data-icon="custom"><div>a</div></a></li> <li ><a href="#" id="b" data-icon="custom

问题 I'm using ion-img in my ionic2 application to load my pictures correctly. However, I wonder if there is a way to indicate to the user that the picture is actually loading. Thank you for your help! EDIT : Here is the answer if you absolutely need to use the ion-img tag. If not, you should use ionic-image-loader as AdminDev826 suggested. I finally solved that problem with CSS! When an image is loading in ionic 2, the ion-img tag doesn't have any class. However, when the image is finally loaded,

问题 I'm using ion-img in my ionic2 application to load my pictures correctly. However, I wonder if there is a way to indicate to the user that the picture is actually loading. Thank you for your help! EDIT : Here is the answer if you absolutely need to use the ion-img tag. If not, you should use ionic-image-loader as AdminDev826 suggested. I finally solved that problem with CSS! When an image is loading in ionic 2, the ion-img tag doesn't have any class. However, when the image is finally loaded,

问题 With this code: <link rel="stylesheet" type="text/css" href="media/css/mobile.css" media="handheld" /> <link rel="stylesheet" type="text/css" href="media/css/screen.css" media="screen" /> on my N78 the nokia's default browser and opera mini load screen.css instead of mobile.css . What am I missing? 回答1: Nokia N78 uses the S60 browser, which reads only "screen" stylesheets. It won't read the "handheld". It doesn't support media query. Instead of trying to type everything here, have a look at