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App Inventor 2 构建纯血鸿蒙 HarmonyOS App · App Inventor 2 中文网
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How to access a mobile's camera from a web app?
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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...
:active pseudo-class doesn't work in mobile safari
...ders, I've posted a demo here: http://jsbin.com/EjiWILe/3/. Check the functionality on your iOS device.
– mhulse
Dec 19 '13 at 20:58
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Detect permission of camera in iOS
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Check the AVAuthorizationStatus and handle the cases properly.
NSString *mediaType = AVMediaTypeVideo;
AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:mediaType];
if(authStatus == AVAuthorizationStatusAuthorize...
How can I scan barcodes on iOS?
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We produced the 'Barcodes' application for the iPhone. It can decode QR Codes. The source code is available from the zxing project; specifically, you want to take a look at the iPhone client and the partial C++ port of the core library. The port is a little ol...
Unzip files programmatically in .net
...ng SharpZipLib and it worked fine. I guess I'll have to see if the prohibition against third party libs and apss is a strict rule or more of a guidline.
– Petteri
May 7 '09 at 21:49
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Websocket API to replace REST API?
I have an application whose primary function works in real time, through websockets or long polling.
10 Answers
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Convert HTML to NSAttributedString in iOS
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In iOS 7, UIKit added an initWithData:options:documentAttributes:error: method which can initialize an NSAttributedString using HTML, eg:
[[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUTF8StringEncodi...
iOS / Android cross platform development [closed]
...nd am starting to get a handle on it. However if I want to on start on an iOS version I need to code everything from scratch - which is, well, undesirable.
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iOS detect if user is on an iPad
... to check whether the device is in fact an iPad:
if ( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad )
{
return YES; /* Device is iPad */
}
The way I use it
#define IDIOM UI_USER_INTERFACE_IDIOM()
#define IPAD UIUserInterfaceIdiomPad
if ( IDIOM == IPAD ) {
/* do something s...