I need a clarification. Today I bought a new Android 10 Samsung device to test apps... and all captured images are shown rotated wrongly inside the Labels. The code is very minimal: takes a photo and then shows it in a Label. It works fine on my iPhone and my old Android device, but in this new Android device the image orientation is not detected correctly by Codename One.
Is it a bug of Codename One or is it something that needs coding in the app?
In the latter case, can you give us a code to take photos in the correct orientation? Thank you.
I think there might already be an issue on that, if not there should be. The gist of it is this... Some modern phones always take the photos in the same orientation and just mark the photo as rotated to X degrees in its tags.
This works usually since most apps know to show the photo rotated. Currently we have a workaround for that in the gallery API but that's a bad workaround. A good workaround would be to check that flag every time we load an image and rotate it dynamically. It would be inefficient but it would solve that problem once and for all.
Related
I created a PeerComponent, that is a port in Codename One of the Horizon Camera SDKs. At the moment, it simply shows a live-preview of the camera.
I tried to add a Label over the PeerComponent: the Label is on top only in Android. On iOS, the Label is on bottom (that means invisible).
I've done a lot of trials to get a correct z-ording on iOS, without success.
My question is which tips, suggestions or checks can I do to make z-ordering working properly on iOS also. Thanks.
Normally it should "just work", there is no special treatment. I think horizon paints in an area we rely on and doesn't paint when we expect it to. Looking at their sample code I see that they reference top and bottom elements which might allow working around this.
I'm using (or try to) Here Maps for my iOS Application. I just downloaded the example project. Just including the map and a few markers (Same problem without markers).
The problem is, when I try to zoom in our out with the pinch gesture (using the build in function from hereMaps) the tiles turn white with the "here"-Logo on in and it takes several seconds to load the real maptile. Thats waaaay to slow. Compare it to google maps, there is not a single loading tile. I did not changed anything. Don't know what to change anyway, its just a few lines of configuration code.
The question is: Is that the normal behaviour? Is there a few to speed it up?
Testet with several WiFi's. Screenshot attached.
Thanks! :)
when orientation changes in android, native android call the destroy method and total new layout is to be made as far as I know. But I think codenameone doesn't do that which is a great thing. But when I checked the cn1 app in devices while changing from portrait to landscape a blank screen is seen for a while and then the orientation changes.
My Problem is that when I have many more components displayed in a form,
the blank screen appears for a longer duration and sometime it hangs. Does it
happen as I don't use Orientation listener methods etc or is there anything I
can do to solve this issue?
I just tried this on my device and it worked fine for the latest build on my Android 6 device. There was the rotation animation from Android where the screen rotated into its new place.
I'm guessing the rendering of your screen is so slow that Android takes too long to draw it and ends up drawing a black screen instead so it can proceed with the animation.
I can't benchmark an application remotely but I suggest going over the performance of your app and making sure it is truly optimized.
I am using a script from http://detectmobilebrowsers.com/ to detect whether a site is being viewed on a mobile browser.
If the site is on a mobile browser, I show a pared down, simple slideshow. If it is a regular browser, I show a whiz-bang super slideshow. I'd like to optimize my images, making them as small as possible on the mobile slideshow. My mobile slideshow is responsive, so it will shrink to fit in whatever window, but I don't want to make it any larger initially than it absolutely has to be.
Does anyone know what the maximum width is on the current array of mobile browsers? Or rather, the maximum width of mobile devices that are detected with the http://detectmobilebrowsers.com/ script?
BTW, I'm not asking how to detect the width once the page is loaded in a browser.
Thank you!!
Edit....
I think you guys misunderstood my question. I AM using max-width:100%. My images DO scale to fit any screen-size. And, I DO determine whether to show a simple slideshow or a complex one. Here's my logic:
If the user is using a mobile device (based on the device detector)
show a simple slideshow
Else the use is NOT using a mobile device (based on the device detector)
If this is a small screen (based on media queries)
show a simple slideshow
Else this is a large screen (based on media queries)
show a complex slideshow
End If (based on media queries)
End If (based on the device detector)
Why bother using mobile detection at all? Because even though for small screens I am only showing the simple, low-filesize slideshow on small screens, the images from the complex, image-heavy, high-filesize slideshow ARE STILL DOWNLOADED (http://cloudfour.com/examples/mediaqueries/image-test/). My media query determination of which slideshow to show doesn't save the user from having to download the images of the slideshow that's currently not shown. It's only used because the simple slideshow looks better on small screens than the complex one. Using the mobile detection screen makes sure that images that aren't shown, aren't downloaded.
Why do I care what the maximum width is on current mobile devices, when my images are set to 100% width and will scale down to fit any size? Because a 900px wide image has a larger filesize than a 600px wide image. If I know what the max width is that the image needs to be, I can save the slide down to that size initially, saving some additional bandwidth. Have you guys ever viewed a slideshow on a mobile device? Slow!
I would really appreciate if anyone can point me towards the proper stats. I googled, but couldn't find what I needed.
The answer is almost certain to change as soon as you deploy the software.
It also depends on whether you mean pixels or screen-resolution-pixels (the Retina displays define them differently).
Perhaps it's best to stick with detecting mobile browsers (if you don't like the scripts you're using, see , e.g.:
Detecting mobile browsers on the web?)
and then let users opt into higher-rez images.
Alternately, you could try to detect bandwidth, which is really what you're optimizing for; 'mobile' is just a proxy for this, and only moderately correlated with it.
I have a lot of images taken from a 360 camera which I would like to be able to display in Silverlight 3. They are NOT regular panorama images. The camera which took the image actually creates a distorted jpeg that becomes undistorted once wrapped around a sphere as a texture. I have desktop software that will allow viewing of the image (not just side-to-side, but straight up, down, etc.) and I need to try to get the same functionality in Silverlight. It is very similar to Google StreetView.
What I think I need is to create a sphere, wrap the jpeg on the sphere as a texture, then put the "camera" inside the sphere. I doubt this is possible in Silverlight, but perhaps there is a way to simulate this?
So far, Google searches aren't bringing anything up. Can anyone point me in the right direction to figure out how to do this? Are there any existing projects that do this?
An example of a typical image is here.
These might help you out (probably not). They are 3d engines for silverlight, but they will probably wrap the image outside of the sphere instead of inside, which is probably what you need.
Kit3D http://www.codeplex.com/Kit3D
Balder http://www.codeplex.com/Balder
Another, possibly more promising option, would be to use javascript. So far you've probably researched how to do this in Silverlight, but you might do some similar searching for using javascript for this. There may be an option out there already, and since Silverlight can interopt with Javascript, you might be in luck.
Your gonna have to map the texture to a sphere then, like you said. But afaik silverlight 3 doesn't support hardware accelerated 3d.
So your options are:
Try and find a silverlight software 3d library (Like this)
Write your own software rasterizer (multi page guide)
Hope this helps
You might want to try cropping a window from the image and display it. if the user want to go right, move the window right and crop. if the user wants to go left, move the window left and crop. to zoom out, expand the window, to zoom in make the window smaller. if you move the frame far right then stitch the image data from the left side.
You might need to modify the image to eliminate the distortion, this shouldn't be too hard and depends on the camera lens focal length.
Don't try mapping the image to a sphere, it is much harder.
At https://hdviewsl.codeplex.com it says that HD View SL (Silverlight version) supports
"orthographic (2D), with wrapping for 360-degree panoramas"
Also you could try to port PtViewer source code to Silverlight from Java if no one else has
UPDATE:
VRLight might be the solution in your case:
http://vrlight.thecloudsite.net/
http://vrlight.thecloudsite.net/tutorial.html
http://ivrpa.org/blog/3651/vrlight_vredit_20
Its author (Jurgen Eidt) is also making cPicture (http://cpicture.thecloudsite.net/index.en.html), if you can't find him from the VRLight site, try from the cPicture one, or try from his blog at IVRPA website (http://ivrpa.org/blog/3651), which seems to have recent posts