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Clarification on Current CloudKit CKAsset File Size Limits
Hi, I’m trying to find an authoritative and up-to-date answer regarding the maximum file size supported by CKAsset uploads in CloudKit. I know Apple documentation has historically referenced a 50 MB limit in some places, but from what I can tell, that limit appears to specifically apply to CloudKit Web Services rather than native CloudKit framework usage through CKAsset. At the same time, I frequently see reports from developers claiming they are successfully uploading significantly larger assets through CloudKit, sometimes well beyond 50 MB. However, I haven’t been able to find clear documentation confirming whether this behavior is officially supported, recommended, or simply tolerated under certain conditions. My use case involves potentially syncing assets larger than 50 MB, and I need to determine whether: CloudKit officially supports larger CKAsset uploads today There is a documented hard limit for native CloudKit CKAsset uploads Uploading larger assets is considered reliable/safe for production apps I should instead design around chunked uploads and reconstruction logic I’m specifically interested in current practical and documented limits for CKAsset in 2026, especially for private database usage on Apple platforms. If anyone from Apple or developers with production experience can clarify this, I’d appreciate it. I also opened a DTS incident regarding this question and was advised to ask on the forums so the answer can benefit other developers. Thanks. (I also opened a DTS incident regarding this question and was advised to ask on the forums so the answer can benefit other developers.)
2
0
705
May ’26
NSMeasurement not converting between UnitInformationStorage Correctly
I'm trying to use (NS)Measurement to convert any higher unit into kilobytes. let mes = Measurement(value: 3, unit: UnitInformationStorage.megabytes) let kilobytes = mes.converted(to: .kilobytes).value I expect kilobytes to be 3072, but instead I get 3000. I get that in computing we often do rounding and for many people 1000 kilobytes = 1MB when in reality it should be 1024 kilobytes = 1MB. Is there any way to change this behavior?
2
0
759
Jan ’22
Making an app that can be set the default web browser.
I have a few web browsers on my phone (Firefox, Chrome) and none of them can currently be set as default web browsers on iOS 14. I am assuming that there needs to be some work done in the app in order for the system to consider it a web browser and show in the list of browsers you can set as default. I am also assuming that the web browser needs to comply with some sort of minimum functionality in order to work as a default. I have been looking for a while for the documentation for this, and I haven't had any luck. What do I need to be able to set an app as a default web browser? A plist? Conform to a protocol? Anything else? Any points to the documentation will be appreciated as I cannot seem to find it on my own.
3
1
3.7k
Jan ’22
Clarification on Current CloudKit CKAsset File Size Limits
Hi, I’m trying to find an authoritative and up-to-date answer regarding the maximum file size supported by CKAsset uploads in CloudKit. I know Apple documentation has historically referenced a 50 MB limit in some places, but from what I can tell, that limit appears to specifically apply to CloudKit Web Services rather than native CloudKit framework usage through CKAsset. At the same time, I frequently see reports from developers claiming they are successfully uploading significantly larger assets through CloudKit, sometimes well beyond 50 MB. However, I haven’t been able to find clear documentation confirming whether this behavior is officially supported, recommended, or simply tolerated under certain conditions. My use case involves potentially syncing assets larger than 50 MB, and I need to determine whether: CloudKit officially supports larger CKAsset uploads today There is a documented hard limit for native CloudKit CKAsset uploads Uploading larger assets is considered reliable/safe for production apps I should instead design around chunked uploads and reconstruction logic I’m specifically interested in current practical and documented limits for CKAsset in 2026, especially for private database usage on Apple platforms. If anyone from Apple or developers with production experience can clarify this, I’d appreciate it. I also opened a DTS incident regarding this question and was advised to ask on the forums so the answer can benefit other developers. Thanks. (I also opened a DTS incident regarding this question and was advised to ask on the forums so the answer can benefit other developers.)
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705
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May ’26
How is "Navigator" implemented in the session's video?
I'm trying to figure out what the actual logic to navigate my App's screens is (I know the video says we shouldn't use it for that - this is just an exercise) using intents, but the lack of the Navigator implementation is a show-stopper. Can someone kindly share what the implementation for it looks like?
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2
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0
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696
Activity
Oct ’23
NSMeasurement not converting between UnitInformationStorage Correctly
I'm trying to use (NS)Measurement to convert any higher unit into kilobytes. let mes = Measurement(value: 3, unit: UnitInformationStorage.megabytes) let kilobytes = mes.converted(to: .kilobytes).value I expect kilobytes to be 3072, but instead I get 3000. I get that in computing we often do rounding and for many people 1000 kilobytes = 1MB when in reality it should be 1024 kilobytes = 1MB. Is there any way to change this behavior?
Replies
2
Boosts
0
Views
759
Activity
Jan ’22
Making an app that can be set the default web browser.
I have a few web browsers on my phone (Firefox, Chrome) and none of them can currently be set as default web browsers on iOS 14. I am assuming that there needs to be some work done in the app in order for the system to consider it a web browser and show in the list of browsers you can set as default. I am also assuming that the web browser needs to comply with some sort of minimum functionality in order to work as a default. I have been looking for a while for the documentation for this, and I haven't had any luck. What do I need to be able to set an app as a default web browser? A plist? Conform to a protocol? Anything else? Any points to the documentation will be appreciated as I cannot seem to find it on my own.
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3
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1
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3.7k
Activity
Jan ’22