4 ms·
It blows my mind that people can't understand that scrolling "feels right" is a show-stopper feature for a touch interface. Meanwhile, at Apple, they would hav
by divtxt 15y ago
It blows my mind that people can't understand that scrolling "feels right" is a show-stopper feature for a touch interface.
Meanwhile, at Apple, they would have got it right in version 0.1, and Steve Jobs would treated that as prototype quality and made the team do 10 better variations.
- mrich 15y agoApple makes compromises, too. On the original iPad scrolling can be really laggy (probably only after installing a couple of apps, so you won't notice it in the store). Meanwhile, the current generation of dual core Android phones have hardly any lag issues anymore.
- mgkimsal 15y agoSomewhat agreed. It can be laggy, but on mine it rarely is (but it does happen). However, it's never consistently choppy when scrolling. So... laggy sometimes, but still smooth scrolling. Every Android device I've tried (just tried a couple tablets at a Best Buy this week) have been consistently laggy (response times to swipes) and choppy scrolling.
- Synaesthesia 15y agoActually the first time I used an iPad I was blown away by the smoothness of scrolling in web pages, and it still holds up really well today IMO
- mrich 15y agoYes, because the scrolling is very well supported by hardware. But you will notice the slowness when you are zooming in/out of pages (the font smoothing takes about half a second). But Apple got it right compared to Android, and you are right that even today the iPad holds up well, considering its hardware (reminds me of the C64 which was able to smoothscroll because of hardware support, while the PC didn't manage it at that time)
- deleted 15y ago[deleted]
- beatle 15y agoGarbage collection in Android is another performance bottleneck. ICS "fixes" this by allowing the garbage collector to run on a different thread but imo that's a kludge.
- babebridou 15y agoYou're beating a dead horse alright, but it's the wrong one. Garbage collection has never had anything to do with poor UI performances, and everything to do with making poor code stutter. When the GC starts hitting your framerate, it means you are creating far too many objects and far too frequently. Before ICS, android implemented the incremental GC that runs more often but for "negligible" sub-1ms lengths. If you absolutely need 60fps, make sure the GC never gets to do any work and start monitoring your own memory through buffers, just like you would in any other language.
- beatle 15y agoUsers don't distinguish between poor UI performance and"code stutters". The "negligble" sub-1ms stutters are a real problem in practice. and it's not just limited to poor code. Sometimes, no matter what you'll see GC being called, there's no way around it. There are background threads that are doing all sorts of things, which very well might be getting GC'd. Theres also a lot of things you can't reasonably avoid, like allocations from Iterators, etc. There are literally thousands of forum and blog posts discussing this online. Garbage Collection very slow on Android with latest stable line http://groups.google.com/group/v8-users/browse_thread/thread/bd3a269ff4107619 http://groups.google.com/group/v8-users/browse_thread/thread... How can I avoid garbage collection delays in Java games http://stackoverflow.com/questions/2484079/how-can-i-avoid-garbage-collection-delays-in-java-games-best-practices http://stackoverflow.com/questions/2484079/how-can-i-avoid-g... Avoiding garbage collection for smooth 2d animations Options http://groups.google.com/group/android-developers/browse_thread/thread/e342700f10e9f830 http://groups.google.com/group/android-developers/browse_thr... Image tiling on Android, garbage collector slows down http://stackoverflow.com/questions/7916021/image-tiling-on-android-garbage-collector-slows-down http://stackoverflow.com/questions/7916021/image-tiling-on-a...
- foobarbazetc 15y agoThe number of apps you have installed has no significance what so ever on scrolling. Just FYI.
- orijing 15y agoI think he means the number of apps running in the background. For example, if you have the Groupon app making constant push notifications to you, that's expensive.
- robmcm 15y agoAlso worth noting that the iPads in the Apple stores are normally stuffed with apps for people to try, rather than just plain installs.
- podperson 15y agoIt's a definitional thing. "Works" at (say) Microsoft or Google means "produces a correct result at the end" whereas it means something quite different at Apple. The most egregious example I've seen of this is the way Mac OS filtered mouse movement data from the beginning, but it still doesn't feel right on Windows (and wasn't even in the ballpark until around Windows 98/NT4). (And, by contrast, the Amiga had pretty much nailed mouse movement early on as well.)
- tjoff 15y agoYou say that as if that was a fact but in reality is nothing but your opinion. I can barely stand the, in my opinion, horrible mouse acceleration in OS X and knowing apple I can imagine that they feel that giving me the option to disable it isn't user friendly.
- cameldrv 15y agoYes, the Mac acceleration is horrible. The best solution I've found is to buy a Microsoft mouse and install the Microsoft driver for it. Works properly, just like Windows.
- deleted 15y ago[deleted]
- kooshball 15y agoAll the windows phone 7 devices I have seen work extremely well in terms of smooth scrolling. Definitely on the same levels as ios devices if not better.
- cbs 15y agopeople can't understand that scrolling "feels right" Am I the only person in the world for whom the inertia of a scrollable area at rest, tending to stay at rest _is_ what feels right?