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I'm working on an iPhone web app where I'm using the "apple-mobile-web-app-capable" meta tag to get "full screen mode". When I lauch the app it shows a picture of the page where I left of the last time while it loads. It looks like the app is ready to receive input when it is not, and that's confusing.
Is it possible to change the default behaviour and show a blank screen until it is ready to receive input?
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So, if you want to set a custom PWA splash screen and icons, the only way out is to add special HTML tags. For splash screens, it is the <link rel=”apple-touch-startup-image” /> meta tag. For icons, you should add one more HTML meta tag – <link rel=”apple-touch-icon” />. That done, your iOS headache isn't over.
Splash screen is commonly found in iOS apps, as well as, other desktop applications. This is the first screen you see when launching an application. Usually, splash screen is an image covering the entire screen and disappears after the main screen is loaded.
A Launch Screen appears instantly when your app starts up and is quickly replaced with the app's first screen, giving the impression that your app is fast and responsive.
A custom splash screen makes your Progressive Web App (PWA) feel more like an app built for that device. By default, when a user launches your PWA from the home screen, Android displays a white screen until the PWA is ready.
This will add a Splash Screen to your Web App. Below are the sizes you’ll need for iPad (both retina and non), iPhone/iPod Touch (retina and non), and iPhone 5. These include the status bar area as well.
Apple Docs-Launch Images, Apple Docs-Icon and Image Sizes
<!-- iPhone (Retina) -->
<link href="http://www.example.com/mobile/images/apple-startup-iPhone-RETINA.jpg" media="(device-width: 320px) and (device-height: 480px) and (-webkit-device-pixel-ratio: 2)" rel="apple-touch-startup-image">
<!-- iPhone 5 -->
<link href="http://www.example.com/mobile/images/apple-startup-iPhone-Tall-RETINA.jpg" media="(device-width: 320px) and (device-height: 568px) and (-webkit-device-pixel-ratio: 2)" rel="apple-touch-startup-image">
<!-- iPad Portrait -->
<link href="http://www.example.com/mobile/images/apple-startup-iPad-Portrait.jpg" media="(device-width: 768px) and (device-height: 1024px) and (orientation: portrait) and (-webkit-device-pixel-ratio: 1)" rel="apple-touch-startup-image">
<!-- iPad Landscape -->
<link href="http://www.example.com/mobile/images/apple-startup-iPad-Landscape.jpg" media="(device-width: 768px) and (device-height: 1024px) and (orientation: landscape) and (-webkit-device-pixel-ratio: 1)" rel="apple-touch-startup-image">
<!-- iPad Portrait (Retina) -->
<link href="http://www.example.com/mobile/images/apple-startup-iPad-RETINA-Portrait.jpg" media="(device-width: 768px) and (device-height: 1024px) and (orientation: portrait) and (-webkit-device-pixel-ratio: 2)" rel="apple-touch-startup-image">
<!-- iPad Landscape (Retina) -->
<link href="http://www.example.com/mobile/images/apple-startup-iPad-RETINA-Landscape.jpg" media="(device-width: 768px) and (device-height: 1024px) and (orientation: landscape) and (-webkit-device-pixel-ratio: 2)" rel="apple-touch-startup-image">
If creating a Web App for iPad compatibility it’s recommended that both Landscape and Portrait sizes are used.
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