I created a multi image selector form field widget to use within a form with validation and so on, and it works fine; however, when I select 8 or more images from a file picker at once and add them to the selected images list, which would be displayed in an image widget within a GridView, the app crashes without any errors.
I even tried the app on Android to see if it happened there, but everything was OK even when I added 10+ images at a time.
I'm wondering if there's any way to debug this because I'm at a loss for what to do right now with no errors.
i've tried these:
Using a 50x50 pixel size cache for the selected image list to avoid loading a large amount of data at once
It turned out to be file_picker v4.0.0 causing the issue
Apparently, when you select files using this package, it will interact with the file, either loading it or whatnot. I'm not sure, but I discovered it by removing image widgets and only displaying the selected image paths using a text widget and it still crashed, so I was certain it was the file picker's fault and chose to use file picker cross even though it depends on file picker it was working differently and it didn't crash the app even with 20 images selected.
Related
I am trying to display the picked images from gallery in a grid view . I have stored the images path in a list and displaying in the Gridview. After exiting the app and restarting , the grid view is empty. I want to retain the picked images for the next time when the user opens the app again, user should be able to see the gridview with previously picked images.
I am using imagepicker package in flutter. Since the image is stored in a cache , next time when the user restarts again , cache is cleared and the images list is empty. I have no idea about, how to display even after reopens the app?
I am using the latest version of Xcode 10 that's available in the app store. I keep losing UIBarButtonItem images in the designer. They are visible when the app is run. I can get the images back by switching the image to a different one and then switching it back again. This is what it looks like when the images are gone:
This is what it looks like when the images are visible:
If I change one image, all of the images on the screen come back. They will generally stay until I close down and reopen the app in Xcode.
They always display correctly when run on an actual device. I have tried it on multiple iPads, an iPhone, and every device simulator that I could find. This is only an issue with images on the designer.
This is how the images are set up in Xcode:
The 1X image is 24x24, the 2X image is 48x48, and the 3X image is 72x72. All images that I am using were created in Affinity Designer. They were all saved as PNG files. This is a file with the images that I'm using for the checkmark: Checkmark Files
All of the images have the following settings:
This is what the settings for the UIBarButtonItem looks like.
So far, this is just an annoyance that is happening in multiple apps that I'm working on. I'd just like to figure out why it is happening and if it is just an Xcode bug.
I'm using Xamarin for Visual Studio, and am getting frustrated trying to do what I would think should be a very simple thing: creating a launch (splash) screen for iOS, that has a single image that is centered on the screen (vertically and horizontally centered).
I'm creating it the recommended way, using a storyboard (other methods, like using an assets catalog, are considered deprecated as of iOS 9). In the storyboard, I have a View Controller, which contains a View, which contains an Image View. In the Properties pane, I've tried messing with the Mode (in Widget tab), and I've tried playing around with contstraints - which I think might be the key, but it is difficult to understand how it all works together.
You need to add the Splash screen in the applications properties (Launch Images). You need to create the image and upload it via that section. I couldn't find anything saying that the use of Asset catalogues are depreciated.
In AS3 I am loading an image at runtime using loaderContainer.load(new URLRequest(nameofpic)). The image loads perfectly fine, but then I need to copy the image into a number (24) of MCs and this is where it gets tricky.
The problem is, I can run it perfectly fine in preview mode, got all the 24 copies, but whenever I try running it in Firefox or IE, the images aren't displayed. No errors, just blank spaces.
It works with images present when exporting, both on stage or in the library -- their copies are visible in both preview mode and in the browser, but the browser doesn't want to work with dynamically loaded images
I have tried the draw() method as well as bitmapData.clone and again, they seem not to work in the browser, while they're fine in the preview mode.
Do you know what causes the problem and/if there is a list of more of such bugs?
DB
This is really weird behavior. Having difficulty even quantifying. Have had to revise a few times.
Best I can do is the following:
The tech stack for my app is Backbone Marionette, handlebars.js, require.js.
The app contains images mostly of icon size - say 32x32 and under. Some jpg, some png, some svg.
Some of the images, the same ones each time, don't display. That's a common issue on which many have posted. No big news there.
But if I hit the sleep button, leave the iPad sit for a minute or two until the unit really goes into hibernate mode, and then revive it, the images slowly and magically fade in. They don't abruptly display when the screen lights. They fade in afterward.
Doesn't work to just hit the sleep button and instantly revive. Have to wait a minute until it truly hibernates.
After true hibernation, no matter how many times I refresh the page, the images are there. But, if I go and clear the cache on Safari and load the page, the images are not there again - until I do that hibernate thing.
All of these images do display without fail in a browser on a PC (all flavors). It's just on the iPad that they don't.
I thought, at first, it was just images I was loading in collection views. It is not. I have a third party HTML5 video player in the app. It has a play button and other controls in svg format. This also exhibits the behavior above.
Once the iPad has hibernated and been revived, the images fade in. Only clearing cache makes them disappear again.
There are no 404 errors when the images don't display (checked in dev console on a MAC). In fact, if I just tap the screen where the video play button is supposed to display, the player begins. So the button seems to actually be there, just not painted on the screen - until you do that hibernate thing.
Some images in the app always load no matter what. I'm looking at those images to see if I can note anything special about them or the code which renders them.
I tend to think it's not the images themselves because the very same images in a plain web page always display on the iPad. Also, that third party video player in a plain web page displays the svg play button and controls without fail on the iPad.
It's just in my app that the behavior occurs. So it's logical to think my app is where the problem lies. I just can't seem to find a common thread for the images that always work vs ones that don't.
Not sure what code I can even post here. I'll look and see what might make sense to post.
Definitely a problem loading images dynamically via the framework. They are there but do not paint. No idea what the problem actually is. Literally only happens on Safari mobile browser. Can't make it happen anywhere else, even old IE. Know one solution that definitely works though. Preload all the images by explicitly including them in a div in your markup. When you load your marionette app, remove the div - $("#preload-images").remove(). Thereafter the images never fail to paint when added dynamically via marionette.