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2014/10/15 ¤U¤È 10:05:43
iphone Programming Glossary: countshttp://stackoverflow.com/questions/11173605/detecting-a-clap-in-ios a clap in IOS I am trying to build an IOS application that counts claps. I have been watching the WWDC videos on CoreAudio and the topic seems so vast that I'm not quite sure where to look...
How to use beginBackgroundTaskWithExpirationHandler for already running task in iOS http://stackoverflow.com/questions/12071726/how-to-use-beginbackgroundtaskwithexpirationhandler-for-already-running-task-in the server . You can have as many background tasks as you want open at a time. They cost nothing. They're like retain counts. As long as you still have one open a begin that did not get to its end then the system will consider that a request for..
i want to store some data in “EverNote” through our app http://stackoverflow.com/questions/14052708/i-want-to-store-some-data-in-evernote-through-our-app notebook guid noteStore findNoteCountsWithFilter filter withTrash NO success ^ EDAMNoteCollectionCounts counts if counts Get note count for the current notebook and add it to the displayed total NSNumber notebookCount NSNumber counts.. notebook guid noteStore findNoteCountsWithFilter filter withTrash NO success ^ EDAMNoteCollectionCounts counts if counts Get note count for the current notebook and add it to the displayed total NSNumber notebookCount NSNumber counts notebookCounts.. if counts Get note count for the current notebook and add it to the displayed total NSNumber notebookCount NSNumber counts notebookCounts objectForKey notebook guid noteCount noteCount notebookCount intValue NSString noteCountString NSString..
Detecting the type of iPhone interrupt http://stackoverflow.com/questions/1895815/detecting-the-type-of-iphone-interrupt None of them involve private method calls though you could argue that observing an undocumented notification name counts as private API. In the end Apple's opinion is the only one that will matter. Personally I'd try it making sure the code..
How i count red color pixel from the UIImage using objective-C in iphone? http://stackoverflow.com/questions/2342327/how-i-count-red-color-pixel-from-the-uiimage-using-objective-c-in-iphone tree master Miscellaneous PixelAccess The important bit is the following code which takes a UIImage and then counts the number of pure red pixels. It is an example and you can use it and modify it for your own algorithms Structure to keep.. Now that we have the image drawn in our own buffer we can loop over the pixels to process it. This simple case simply counts all pixels that have a pure red component. There are probably more efficient and interesting ways to do this. But the important..
Parsing XML code on iphone SDK http://stackoverflow.com/questions/3616447/parsing-xml-code-on-iphone-sdk
Remove the “Today” entry from UIDatePicker http://stackoverflow.com/questions/4220850/remove-the-today-entry-from-uidatepicker to do to implement your custom date picker Implement a UIPickerViewDataSource to set up row titles dimensions and row counts. Implement a UIPickerViewDelegate to handle events from your custom picker. Make sure you update your day wheel when the..
http://stackoverflow.com/questions/5251600/difference-between-accessing-a-property-via-propertyname-versus-self-property c Can you cover in the answer What is best practice How do the two approaches affect memory management retain counts one's responsibilities for memory management Any other advantages disadvantages The assumption for the scenario could be..
A simple sync with the iPhone DropBox API http://stackoverflow.com/questions/5950168/a-simple-sync-with-the-iphone-dropbox-api in dropbox DBMetadata dbObject loads metadate we need e.g. lastModifiedDated int numberOfFiles metadata.contents count counts files in DropBox I guess we don't really need this NSLog @ numberOfFiles i numberOfFiles while dbObject e nextObject this..
Does iOS 5 have garbage collection? http://stackoverflow.com/questions/6576674/does-ios-5-have-garbage-collection
CoreAudio AudioTimeStamp.mHostTime clock frequency? http://stackoverflow.com/questions/675626/coreaudio-audiotimestamp-mhosttime-clock-frequency returns the number of ticks since the last boot. At every boot the tick counter starts at zero. The tick counter counts strictly upwards it never goes backwards . The tick counter only counts ticks while the system is running. As you can see.. tick counter starts at zero. The tick counter counts strictly upwards it never goes backwards . The tick counter only counts ticks while the system is running. As you can see the tick counter is somewhat different to the normal system clock. First..
http://stackoverflow.com/questions/7844326/coredata-error-driving-me-crazy-coredata-serious-application-error-an-excep lines. In fact no rows are being inserted so the tableView fails an assertion. You can see the expected and actual row counts in the assertion message . The increase from 3 rows to 4 rows shows that your NSFetchedResultsController is noticing the..
Retain Cycles: Why is that such a bad thing? http://stackoverflow.com/questions/791322/retain-cycles-why-is-that-such-a-bad-thing this means references it has to objects it owns will be dropped the objects being referenced will have their reference counts go to zero. They'll be deleted and the cascade will cause all objects to be deleted. But... if you have a cycle this cascade.. you have to these objects but because there is a cycle the objects reference each other. This means their reference counts never go to zero and they don't get deleted. This is a memory leak. Clearly you can do some careful management and break..
Memory usage grows with CTFontCreateWithName and CTFramesetterRef http://stackoverflow.com/questions/8491841/memory-usage-grows-with-ctfontcreatewithname-and-ctframesetterref what is leaking and where it is allocated but not where the extra retain comes from. To that turn on Record reference counts in the Allocations instrument and re run the test. This will allow you to inspect the backtraces of every retain release..
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