I have a problem getting my audioclips to play on ios devices in webgl. I have seen other games with audio working so i know it is possible. Now after 3 days of trying to fix the issue with no luck i really hope you can help me with the problem. I know a solution where you can add some meta tags and save it as a Webapp on your phone. But that is not the solution i am looking for.
Here is an example of a game where the audio works fine in an ios browser http://temple-run2.com/
I quote:
Note that Unity WebGL content is not currently supported on mobile devices. It may still work, especially on high-end devices, but many current devices are not powerful enough and don’t have enough memory to support Unity WebGL content well.
more info
As so, uncontrolled behavior may (very likely) occur on mobile devices.
I know a solution where you can add some meta tags and save it as a
Webapp on your phone.
What is wrong with just building to iOS nativly?
If you really need 3D content in a webbrowser that's supported on mobile devices, take a look at threejs
Related
we are developing a web app, that is supposed to play high quality stereo in combination with accessing the microphone input. We got this to work on all android and pc browsers, but the iphone is refusing to do this properly. We nailed the problem down to the access of the microphone input by "getUserMedia". Web audio plays stereo, until the microphone is enabled. Then, the quality drops and the output goes to mono. I have researched this problem in the internet, but only found posts that are several years old. My hope is, that things have changed in the meantime and solutions have been found. It seems like the phone is switching into some kind of "call mode". I would like to avoid this by either overriding corresponding settings or maybe by using a different way than using web-audio to play the stereo signal. I am open for any ideas. The worst case seems that we have to develop a dedicated native app for ios. If there is any workaround to make this happening in a web app, this would be highly appreciated. If desired, I can provide code snipplets, but I think, at this moment the problem should be clear.
BTW, in android we had similar problems and found that "Dolby Atmos" setting is causing strange mixing down to mono under certain circumstances. Switching it off fixed the android issues. Maybe this helps somebody else and maybe there are global settings on the iphone as well that could cure the problem..
Thank you very much in advance!
Cheers,
Chris
The worst case seems that we have to develop a dedicated native app for ios.
Unfortunately, this is the path forward most likely to yield success for you (if you haven't already figured this problem out, since I'm answering your question almost a year later).
The audio I/O device landscape is complicated, and there are several standards and factors that play into the quality of audio input and output an application yields. For instance:
Is the audio input device the same as the audio output device?
If yes, is the audio I/O device Bluetooth?
If yes, it's unlikely that the Bluetooth audio device supports stereo audio out and simultaneous audio input. Few I/O devices support that, and few host devices support that.
If yes, which Bluetooth version does the I/O device support?
Which operating system is the host device running?
Does the host device's operating system support the selection of audio input and output devices separately?
How much access to the host operating system does your application have?
For example, if your application is running in a browser, your application will have significantly less control over the host device's operating system's audio subsystem.
I have been trying to work around this problem recently, too. Another developer did a detailed investigation of this using a spectrum analyser and scope, and didn't have any luck either: testing iOS audio play/record with scope.
I think building a native app will end up being inevitable, and would also fix the myriad other problems with Safari web audio. Either that or wait until Apple fixes the bugs or implements AudioWorklets.
I am trying to build a audio/video streaming app that works cross platform on iOS and Android mobile devices.
No matter how deep I Google, I'm ending up with suggestions that point me towards OpenTok/TokBox API. But this is what I wish to avoid.
I've checked a few demo, but WebRTC/HTML5 do not seem to work with streaming video/audio in iOS browser. For example, the https://apprtc.appspot.com demo does not work in Safari or Opera Mini in iOS.
When I try http://dev.opera.com/articles/media-capture-in-mobile-browsers/demo/ ... I can capture image using the default iOS camera picker from my browser but streaming video fails.
It seems like the getUserMedia() stuff is not supported by any browser in iOS.
Moreover, I am planning to put this on a WebView in a native iOS app. This sounds like a really far cry.
I wish someone could point me towards something that helps me build a video streaming app (hopefully using HTML5), that works uniformly for iOS and android (without TokBox).
You might want to look into Ericsson's Bowser App http://www.ericsson.com/research-blog/context-aware-communication/bowser-openwebrtc-released-open-source. It claims to provide WebRTC on Android and IOS. Apparently the App is currently under review in the App Store so if you wait it may just be a case of downloading the App. However it's also open source so if you can't wait then you can build it yourself https://github.com/ericssonresearch/bowser.
getUserMedia and WebRTC Peer-to-peer connections APIs are not supported in iOS.
One of the reason is that at the moment efforts around WebRTC focus on VP8 video codec which Apple and Microsoft do not support natively. Support in the near future is unlikely with Microsoft pushing for its own standard.
Doing what you want on iOS requires you use a native iOS compatible solution like OpenCV which supports video capture. You can find on Google tutorials on how to implement a solution based on OpenCV.
good news, will be supported at Safari 11.0
https://developer.apple.com/library/content/releasenotes/General/WhatsNewInSafari/Safari_11_0/Safari_11_0.html
Is there an SDK for Airplay Mirroring? I'm working on a prototype for a device that should mirror the screen of an iOS device. I understand this may be achievable by paying royalties to Apple for each device, and I'm fine with that. But how would I go about prototyping this features? There is a lot of info on writing iOS apps that support AirPlay, but I can't find much info about the hardware side.
Update
Based on the exchanges in the comments, I wondering now whether this is at all possible.
It seems like it is not possible to have a device that can mirror the iOS screen via AirPlay mirroring. While I couldn't find an official statement to this effect, these guys seem to have done the work for their project:
http://www.indiegogo.com/projects/airtame-wireless-hdmi-for-everyone--2?c=activity
Hopefully things may change in the future, and I'll be sure to update the answer if they do.
I'm currently developing a mobile website with jquery mobile, not exactly responsive web design. I know I can develop the project in the browser on my desktop PC with some plugins or use some online services or simulators available. But I'm not sure if I missing something really important for test.
Example:
touch/swype events or viewport rotation.
Is necessary purchase some physical devices (smartphone/tablets) to develop/test the project? Why?
Intro
First don't let anyone tell you it is not necessary to purchase a real devices for a test purpose. I will tell you why from an Android perspective, same thing, just in a much smaller manner also goes for iOS development.
Good sides of an emulator testing
It is free, you only need a computer which will run your emulator.
You can test your applications in different cases (different screen resolutions, different OS versions)
Faster I/O and network operations but this is not so much a good point if you calculate how much everything else is slow.
Bad sides
It is slooooooooow, if you never tried to use it you can comprehend how slow it is (iOS emulator is fast like hell in a comparison). It doesn't matter if you have a top of a line hardware PC or Mac it is just that slow.
Emulator is simply to darn buggy, there will be a lot of times when application will work just fine on a read device and it will brake on an emulator.
This also goes other way around, sometimes application will work just fine on an emulator but will brake on a real device, in some case it will not work at all or it will not work on some devices. This is usually a case when working with hybrid applications. for some reason Android web view acts differently on real devices and on an emulator.
Emulator simply don't have some functionalities to interact with a hardware nor it can successfully emulate it. Hardware connection it can emulate even don't work correctly sometimes.
I have talked about how slow it is (because of a converting ARM bytecodes to x86 ones on the fly) but from a graphics standpoint it tends to be even slower so don't expect to do any game development on it.
Real devices comes with much more preinstalled software which may slower your application or in some ways enhance its functionalities.
Real world GPS testing is out of a question
Final notes
If you are intending to work with iOS only emulator can be used to do much of a development. Sheer lack of different screens sizes and hardware diversity makes it a perfect platform for a test purposes. Android on the other hand is completely different story, its emulator is simply useless for test purposes. I have several real Android devices, ranging from Android 2.1 + , different screen sizes and finally hardware architecture. You don't need to believe me but everything I mentioned play a significant role while testing Android applications.
If your main concern is testing your jQuery Mobile application I would still advise you a use of a real device in case of Android while in case of iOS you can successfully use emulator. Android is problematic because transition effects are to darn slow and that includes everything else that requires animations. Swipe will not be a problem and I can vouch it works just fine. Second real problem is a device rotation. jQuery Mobile sometimes can have a problem with it, mostly when used with non responsive 3rd party jQuery plugins (carousels, sliders ....). Third problem is mentioned in my list of bad sides, basically web view used in a emulator acts different then one in a real phone so sometimes you will see one thing in your real device and one thing in your emulator.
It is not necessary to purchase such a device.
For Android there is an emulator provided by the Android Development Kit (ADK). You can use it to configure multiple emulated devices with defferent screen sizes, etc. to test for multiple resolutions and Android (browser) versions.
[edit] Though to really test it for iphones you would need that emulator too I suppose, to make sure the website is correctly displayed in the provided browser.
[edit 2] To test "real" smartphone apps (not webapps), it is better to have a real device at hand.
This very much depends to which level you want to test it before you are happy to hand it over for the usage. After you do that and someone reports a defect, will you be able to see where is the problem (if it works on your PC)?
The development itself can be done in your browser, you can even simluate swipe events by dragging mouse. You don't even need any simulators, you can just make chrome window smaller (most of the devices are using some version of webkit, same as chrome).
However, once it comes to testing, I wouldn't feel great if I didn't know how it looks on the device itself. So I think having at least one device (ideally two with different OS and resolution) is always beneficial.
I would also be unsatisfied if I was working on something of which I could not see the result :)
Is there a way to capture video of a screen from your own application? As far as I see there is no way to do it with UIImagePickerController (cameras only), but maybe there is a way to do it with iOS 4 AV Foundation or Core Video?
There seems to be two ways of capturing the content of the application while it's running:
Use the private API UIGetScreenImage() function which seems to be accepted by Apple now;
Use the following thread's captureView method to capture the image.
You'll have to capture it at many times per second (I guess 24 times should be ok for human eye persistence) then you'll have to produce the movie. Perhaps you could use the ffmpeg iphone port.
Alternatively, if you'd like to capture your application's running for a demo, your best bet would be to run your application on the simulator and use a Mac OS X screencast software to capture it. See also SimFinger which "bundle of little tricks to make a screen capture of the iPhone Simulator suck less".
Finally, perhaps the following StackOverflow thread might help you produce better screencasts.
SimFinger and ScreenFlow are great if you can shoot in the simulator.
If you have to shoot on the device (e.g. when accelerometer, GPS, camera, etc. are used) you currently have to resort to the jailbreak world. The app "Display Recorder", available for $5 in the Cydia Store, allows to create an AVI movie of the iPhone's screen content. This works across all apps. There's a YouTube video showing it. The movie files can then be uploaded to YouTube or pulled off the iPhone via the built-in web server.