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How to replace images from server to Asset catalog via programmatically (iOS)?
Image asset add in the app bundle. and You can't change anything in the app bundle at run time.
You can't change images from an asset catalogue programatically as they are baked into the app. You can, however, use something like AsyncImageView to load images from a URL which is probably what you want to do.
You can not change anything inside NSBundle. So you can put your image in DocumentDirectory.And make sure your document directory should not sync with iCloud.
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Am building an iOS app that requires user uploading pdf files. I want to create a button that after the user clicks it, it opens the file directory to search for the specific file to upload to the server.
I will appreciate if anyone can tell me how to do it using swift.
Thank you
Two things you can consider:
1. If you have to give permission for sharing document directory in your .plist. Then traverse through file app.
2. Or you have to use UIDocumentBrowserViewController and show list of file and directory.
Please check this link : https://developer.apple.com/documentation/uikit/uidocumentbrowserviewcontroller
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In an iOS project, if I wanna use an image, I should add a file reference to project navigator, it's not so convenient when there are many images to be included, is there any way to include all images automatically ?
If you are targeting iOS 7+ there is really one answer - you really should
use assets catalogs. You might find this tutorial and of course the primary source.
Is a way to include all your images automatically? Well if you have all you images in one directory, you can drag&drop it to “assets catalog” view and that should be it - they all will be organised nicely so you will see what is missing, given that you named your assets properly (“~ipad”, “#2x”, “#3x” suffixes etc.). Although assets catalogs allow you much more.
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I'm creating a social media app.
I want to know a way to cache a users profile picture once downloaded from the Parse network and then each time the app is loaded check if an updated picture has been found and load that one, then cache that one.
I have no idea how to approach this, does anyone have any ideas?
There are plenty of third-party libraries for caching you can find on Github, or you can simply use NSUserDefaults or CoreData to save the pictures(or really anything) to disk. To check if a picture was modified, you can give the picture an identifier, compare it with the response from the server, and re-save the picture, or do whatever is needed.
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My app has to integrate uploading image to set it as profile picture. The thing is all the images has to be stored in web services.
As web service has not been yet created. what is the best way to store images for temporary purpose so that i can integrate it easily when i have been provided with the backend.Sample tutorials can be helpful
My best idea is to use FTWCache (https://github.com/FTW/FTWCache) and cache it localy. Later, using webservice, you can still use your already written cache mechanism to implement NSURLConnection with caching. Profit! ;-)
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I am downloading an MP4 from a server by writing the file data directly to the app's documents folder. My question is - is there a way to start playing this file before it is fully downloaded?
According to https://trac.mplayerhq.hu/ticket/748 this is not possible because important information is missing from the file. I haven't studied the container format myself to confirm that.