I did some sample code like this:
this.on('timeupdate', function() {
console.log(video.videoHeight());
});
As the video plays, the height actively changes at random points. Meanwhile if I just do a console.log of video.videoWidth() it gives me a width that is clearly too narrow vs what I am viewing. Not sure what is wrong here at all, or how to attempt to debug because it's such a basic command.
Related
I'm using expo-camera pretty much straight from the code snippet in the docs and the takePictureAsync function never returns.
async takePicture () {
try {
let photo = await this.camera.takePictureAsync()
console.log('this will never return', photo)
} catch (err) {
console.error('this does not error', err)
}
}
I have granted permission and I've tested out various ways it might be a promise issue, but no luck.
I'm running on-device with a Pixel 3a. Any advice would be appreciated.
It accepts an options object as a a required argument.
quality (number) -- Specify the quality of compression, from 0 to 1. 0
means compress for small size, 1 means compress for maximum quality.
exif (boolean) -- Whether to also include the EXIF data for the image.
onPictureSaved (function) -- A callback invoked when picture is saved.
If set, the promise of this method will resolve immediately with no
data after picture is captured. The data that it should contain will
be passed to this callback. If displaying or processing a captured
photo right after taking it is not your case, this callback lets you
skip waiting for it to be saved.
skipProcessing (boolean) - Android only. If set to true, camera skips
orientation adjustment and returns an image straight from the device's
camera. If enabled, quality option is discarded (processing pipeline
is skipped as a whole). Although enabling this option reduces image
delivery time significantly, it may cause the image to appear in a
wrong orientation in the Image component (at the time of writing, it
does not respect EXIF orientation of the images).
source
I'm working on a Unity project for Hololens, that uses the camera to capture pictures, send them to a photo recognition API and displays the result. The project works perfectly fine in unity, but not on the emulator/Hololens.
Unfortunately, I wrote a lot of code at once, so i don't know at what point this problem started. The problem show's up after building the project and running it on the Hololens/emulator in Debug mode. On the Hololens, I see the starting window (the one you see after you open any application). After i place it, i see End showing splash screen. on the Output window in Visual Studio, and it just doesn't go any further (but doesn't freeze either, just does nothing).
I don't know where it's coming from, since no exceptions are thrown, but i suspect the camera is the cause. Earlier, i had to comment this line of code:
transform.position = Camera.main.ScreenToWorldPoint(new Vector3((CameraManager.Resolution.width * .5f), (CameraManager.Resolution.height * .5f), 10));
because the function ScreenToWorldPoint was throwing the following exception:
Screen position out of view frustum (screen pos 0.000000, 0.000000, 10.000000) (Camera rect 0 0 0 0)
As you see it says that the Camera rect's size is 0. I even tried directly logging the camera's dimensions to make sure (Debug.Log(Camera.main.pixelWidth + ", " + Camera.main.pixelHeight)), and sure enough, they were (0, 0) on the Hololens/emulator.
I made sure that webcam is supported, and that my camera settings are all set, but that didn't help either.
So i'm not sure if that's the cause of the problem or simply a symptom. And I can't start anywhere since neither the Output nor the Error window show anything wrong. Any help or suggestions would be greatly appreciated.
Thanks for reading!
Edit: Here's the entire output log from beginning to end.
Edit2: I don't know if this is significant, but if I paused execution (in Visual Studio), it always seem to be at Build/ProjectName/App.css => Line 78:
[MTAThread]
static void Main(string[] args)
{
var app = new App();
CoreApplication.Run(app); //<===== Here
}
You might want to check any of your Start() methods. You might have some code that is CPU intensive. Even if it runs smoothly in Unity, doesn't mean it will run easily on HoloLens since their CPU is not powerful.
Also, to avoid any Camera problems, make sur to use the Camera prefab from this
repository :
https://github.com/Microsoft/MixedRealityToolkit-Unity
Those are just some thoughts, hope it helps!
Turns out i didn't enable "Virtual Reality Supported" under Other settings in PlayerSettings. It's really dumb, but i hope this helps someone.
I'm successfully using Soundcloud's widget API, except the setVolume() method is broken :(
First, I love the widget, but I'm blown away that after all that amazing work there is no volume control available! People will immediately "back button" out of my site when they hear 100% audio and I can't alter it using setVolume()... I have to get it working or pull it :(
Here is what is happening, I have an instance named "widget" (which loads and plays well on the page).
widget.bind(SC.Widget.Events.READY, function() {
$('#audioIndictments').removeClass('remove'); // This disables a CSS rule, making the soundCloud iframe visible
widget.setVolume(10); // This should set the volume to 10% but doesn't :(
widget.getVolume(function(vol){
console.log(vol); // This outputs 0.1 in the console :/
console.log(widget); // This outputs the object in the console and I don't see anything out of whack :|
});
widget.play(); // This successfully fires up the widget and the audio begins playing :)
widget.setVolume(10); // Just to see if it makes a difference, after the play() method, I ran setVolume again after the play() method and still no change :(
widget.getVolume(function(vol){
console.log(vol); // This still outputs 0.1 in the console :/
});
});
Strange results. I found another blogger who asked a similar question and got no satisfactory answer. What's the deal here? What am I not seeing?
Thank you for taking the time :)
Try using the a volume between 0 and 1. This fixed it for me.
0.25 = 25% volume
I too am facing the same issue and I discovered that the volume does not reset to full when setVolume method is called outside of the READY event. This is why the setVolume button on the SC api playground works since it's called externally. But there is another problem - when the next track in the playlist is loaded into the widget, it resets the volume back to full and as a result, deafens the user.
I've used a hacky workaround until this is fixed.
Setup a new PLAY_PROGRESS event and call the method inside there.
widget.bind(SC.Widget.Events.PLAY_PROGRESS, function() {
widget.setVolume(10);
});
The setVolume method will continuously be called when the track is played. Not ideal but it works.
If you have a slider in place for volume then you may use this instead:
widget.bind(SC.Widget.Events.PLAY_PROGRESS, function() {
var vol = jQuery('.slider').val();
widget.setVolume(vol);
});
I have a problem with Ti.Geolocation that drives me crazy. Only using IOS platform so far. The goal is to get GPS callbacks with highest possible accuracy when I move around with the phone.
The problem is that I have copied most of the code from geolocation.js in KitchenSink, with the relevant part shown below. It looks OK to me, however the behaviour I get is very strange.
I just don't get regular GPS callbacks when I walk around! The compass works fine however and sends me callbacks all the time. I have also tried without subscribing to 'heading' events, but no change in GPS behaviour.
There is only one event that can trigger a GPS-callback with correct data, and that is running KitchenSink! Switching to KitchenSink and back also gives me a callback with accuracy between 5 and 10. If I don't do that, my accuracy can be as high as 1500-2500 (if I get a callback at all, that is).
KitchenSink seems to work fine, but I fail to see what that app does that I do not?!?
I have turned off Wifi in the phone so it wont disturb. This problem is very frustrating and I have spent three days on it now, can someone please help? I have tried compiling against different SDK's too (normally 2.1.1GA but also down to 1.8.2). No change.
if (locationServicesAvailable()) {
// APPLICATION LOGIC
ui.init();
Ti.Geolocation.purpose = "Get Lat/Long of your current position";
Ti.Geolocation.accuracy = Ti.Geolocation.ACCURACY_BEST;
Ti.Geolocation.distanceFilter = 10;
Ti.Geolocation.frequency = 0; /* as fast as possible */
Ti.Geolocation.preferredProvider = Ti.Geolocation.PROVIDER_GPS;
if (Ti.Geolocation.hasCompass) {
// TURN OFF ANNOYING COMPASS INTERFERENCE MESSAGE
Ti.Geolocation.showCalibration = false;
// SET THE HEADING FILTER (THIS IS IN DEGREES OF ANGLE CHANGE)
// EVENT WON'T FIRE UNLESS ANGLE CHANGE EXCEEDS THIS VALUE
Ti.Geolocation.headingFilter = 45;
/*
Ti.Geolocation.getCurrentHeading(handleCompass);
Ti.Geolocation.addEventListener('heading', handleCompass);
*/
}
Ti.Geolocation.getCurrentPosition(handlePosition);
Ti.Geolocation.addEventListener('location', handlePosition);
ui.refresh.addEventListener('click', function(e) {
Ti.Geolocation.getCurrentPosition(handlePosition);
});
}
OK it seems I have found an answer to my problem. It's as simple as setting accuracy to Ti.Geolocation.ACCURACY_NEAREST_TEN_METERS. I'm using the IOS platform, and I'm located in Sweden (in the countryside) if it matters. Don't know if this solution applies to everyone, but I have seen references to this problem (http://developer.appcelerator.com/question/130596/strange-behavior-of-the-gps) and solution so I know it exists.
No idea why ACCURACY_BEST doesnt work, but it doesnt for me. I'll test all the other settings too when I get the time but now at least I can continue developing.
I'm currently working on an Extension for Safari 5 and I want to run a listener function whenever Settings changes are made. Apple provides an example for that, but it doesn't work for me. I currently have this listener function in my global html file:
function numberChanged()
{
if(event.key == "number")
alert("Number has changed!");
}
safari.self.addEventListener("change", numberChanged, false);
I hope somebody can help me. Does somebody know what I'm doing wrong?
I believe that you need to include ‘event’ as a parameter in your function so it looks like this:
function numberChanged(event)
{
if(event.key == "number")
alert("Number has changed!");
}
however, that said, it’s not working properly for me either (with or without the param), so I might be wrong. Interestingly, every time I change a field or click a button on this stackoverflow form, my alert (similar to yours) IS firing, even though I did not change my setting. totally weird.
update: I got it working, finally. The example that apple provides is just wrong. So there are two parts to the answer. I gave the first part above — you do need to add ‘event’ as a parameter to your function. the second part is that the addeventlistener has to be done on the settings object and not, as apple shows you, using ‘self’ from the global.html page. so the working call would look like this for you:
safari.extension.settings.addEventListener("change",numberChanged,false);