2014/10/15 下午 10:09:15

iphone Programming Glossary: footprint

Checking memory allocation in Instruments

http://stackoverflow.com/questions/1061235/checking-memory-allocation-in-instruments

using the leaks tool but I still notice that the objectalloc tool jumps up in the number of objects allocated and footprint when I switch views. I'm especially seeing high numbers of GeneralBlock 16 with mostly Foundation responsible with caller..

NSCache is not evicting data

http://stackoverflow.com/questions/11520815/nscache-is-not-evicting-data

is needed by other applications . When invoked these policies remove some items from the cache minimizing its memory footprint. Apple does not state that the memory will be freed on memory warning in my experience the cache is most often purged when..

What's the difference between using CGFloat and float?

http://stackoverflow.com/questions/1264924/whats-the-difference-between-using-cgfloat-and-float

all you need is float precision within your own code you can still use float if you like 碍犲t will reduce your memory footprint somewhat. Same goes for integer values. I suggest you invest the modest time required to make your app 64 bit clean and..

How can I encrypt CoreData contents on an iPhone

http://stackoverflow.com/questions/1645007/how-can-i-encrypt-coredata-contents-on-an-iphone

property. While this is not the whole database decryption that you're looking for it will have a much lower memory footprint than decrypting an entire database into memory. Additionally it will allow the decryption to be done lazily rather than..

How much can SQLite store on the iPhone?

http://stackoverflow.com/questions/1752830/how-much-can-sqlite-store-on-the-iphone

the other posters say. You're only limited by the drive space on the device. You also need to consider your in memory footprint though. There is a finite amount of memory on the iphone and in general it's quiet small so the amount of data hydrated..

UIPageControl Help

http://stackoverflow.com/questions/1816144/uipagecontrol-help

what is the application heap size in iphone?

http://stackoverflow.com/questions/1869031/what-is-the-application-heap-size-in-iphone

UISegmentedControl Best Practice

http://stackoverflow.com/questions/2118358/uisegmentedcontrol-best-practice

second parameter is nil and add its view as a subview of your main view as necessary. This will help keep your memory footprint low the default behavior of a UIViewController when receiving a memory warning is to release its view if it has no superview...

Instruments ObjectAlloc: Explanation of Live Bytes & Overall Bytes

http://stackoverflow.com/questions/2154219/instruments-objectalloc-explanation-of-live-bytes-overall-bytes

What's your approach to testing iPhone / iPad apps?

http://stackoverflow.com/questions/2670107/whats-your-approach-to-testing-iphone-ipad-apps

may actually be really harmful. Remove the warnings where possible. 3 Use Instruments to check for memory leaks memory footprint at runtime etc. 4 Use Shark to identify performance problems when I feel it is needed. 5 Execute manually all of a predefined..

Low memory with 640Kb of live bytes?

http://stackoverflow.com/questions/2865786/low-memory-with-640kb-of-live-bytes

of user interface elements that you are dealing with. For a more accurate reading of your application's total memory footprint at any given time use the Memory Monitor instrument instead. You will see that your application is indeed exceeding the..

Memory Troubles with UIImagePicker

http://stackoverflow.com/questions/2921560/memory-troubles-with-uiimagepicker

making a poor attempt to eyeball the memory space I'm freeing up. I know it's not telling me about the actual memory footprint of the UIImages themselves but it gives me SOME numbers at least so I can see that SOMETHING'S happening. Sorry for the.. camera iris shuts. I click the button to take the picture it does the click animation and Instruments shows my memory footprint going from about 10mb to about 25mb and sitting there until the image is delivered to my UIViewController where usage drops..

CSV parser with low memory footprint for iPhone

http://stackoverflow.com/questions/3031181/csv-parser-with-low-memory-footprint-for-iphone

parser with low memory footprint for iPhone After testing my app with Instruments I realized that the current CSV parser I use has a huge memory footprint... for iPhone After testing my app with Instruments I realized that the current CSV parser I use has a huge memory footprint. Does anybody have a recommendation for one with a low memory footprint iphone objective c cocoa csv share improve this.. the current CSV parser I use has a huge memory footprint. Does anybody have a recommendation for one with a low memory footprint iphone objective c cocoa csv share improve this question You probably should do this row by row rather than reading..

Using the apple FFT and accelerate Framework

http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework

packing. it is quite neat basically it allows the complex results of the transform to be packed into the same memory footprint as the real but weirdly packaged inputs. vDSP_fft_zrip setupReal A stride log2n FFT_INVERSE and back again... we will still..

Does every thread need its own autorelease pool?

http://stackoverflow.com/questions/4547652/does-every-thread-need-its-own-autorelease-pool

or a operation that needs a lot of time you really should drain the pool from time to time to keep your memory footprint low. Object storage isn't bound to a thread at all you can access every object from every thread you want but it is possible..

Example or explanation of Core Data Migration with multiple passes?

http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes

We will do the migration in two steps because it's taking long to migrate 2k entries and we like to keep the memory footprint low. You could even go ahead and split these mapping models further to migrate only ranges of the entities. Say we got one..

How to do animations using images efficiently in iOS

http://stackoverflow.com/questions/8112698/how-to-do-animations-using-images-efficiently-in-ios

format of the iPhone iPad graphics chip and it will allow for more memory saving you could also try and use a smaller footprint format for you images i.e. RGB565 instead of RGB8888 16 bits per pixel instead of 32 . If you think this could work for..