2014/10/15 下午 10:10:34

iphone Programming Glossary: invoking

Difference between NSOperation and NSInvocationOperation?

http://stackoverflow.com/questions/12908886/difference-between-nsoperation-and-nsinvocationoperation

single encapsulated task specified as an invocation. You can use this class to initiate an operation that consists of invoking a selector on a specified object. This class implements a non concurrent operation. 2.What is happening when we add NSOperation..

How do I create a mutable array of CGImageRefs?

http://stackoverflow.com/questions/1392321/how-do-i-create-a-mutable-array-of-cgimagerefs

image.CGImage can be costly. From the documentation If the image data has been purged because of memory constraints invoking this method forces that data to be loaded back into memory. Reloading the image data may incur a performance penalty. If..

How do I call performSelectorOnMainThread: with an selector that takes > 1 arguments?

http://stackoverflow.com/questions/1460589/how-do-i-call-performselectoronmainthread-with-an-selector-that-takes-1-argum

Symbolicating iPhone App Crash Reports

http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports

I have all of these files together inside a single directory that is indexed by spotlight. What now I have tried invoking symbolicatecrash crashreport.crash myApp.app.dSYM and it just outputs the same text that is in the crash report to start..

Cross-compile Autotools-based Libraries for Official iPhone SDK

http://stackoverflow.com/questions/1602182/cross-compile-autotools-based-libraries-for-official-iphone-sdk

host arm apple darwin9 enable static disable shared ac_cv_file__dev_zero no ac_cv_func_setpgrp_void yes @ Also I am invoking with enable threads disable dso not just disable dso . This still doesn't work... it is failing with checking for PTHREAD_PROCESS_SHARED..

iPhone SDK: check if a UIAlertView is showing

http://stackoverflow.com/questions/2528929/iphone-sdk-check-if-a-uialertview-is-showing

can I determine this iphone uialertview share improve this question On the object that calls set an ivar before invoking the show method on your UIAlertView. ... if self.alertShowing theAlert UIAlertView alloc initWithTitle title message details..

How can I launch the Google Maps iPhone application from within my own native application?

http://stackoverflow.com/questions/30058/how-can-i-launch-the-google-maps-iphone-application-from-within-my-own-native-ap

NSURL URLWithString @ http maps.google.com maps q London should invoke the Google maps app. From iOS 6 you'll be invoking Apple's own Maps app. For this configure an MKMapItem object with the location you want to display and then send it the..

Api Facebook iphone , possible to post to a friend's wall

http://stackoverflow.com/questions/4126400/api-facebook-iphone-possible-to-post-to-a-friends-wall

dialog's targetId property. NEW SDK set a parameter under the key @ target_id on the parameters dictionary when invoking dialog andParams andDelegate on the Facebook object . Here you have a sample post using the new sdk the one that uses graph..

UISegmentedControl setSelectedSegmentIndex: without valueChanged Action

http://stackoverflow.com/questions/4570941/uisegmentedcontrol-setselectedsegmentindex-without-valuechanged-action

the valueChanged action gets called. This sounds logical for me but is there a way to set the selected segment without invoking the action It should just update the display. I've used UISegmentedControl more than once and until now I didn't even noticed..

how to compile spatialite for iOS

http://stackoverflow.com/questions/4793970/how-to-compile-spatialite-for-ios

drop the .a both are required to work in the simulator AND on the real hardware you can initialize spatialite by just invoking spatialite_init 1 . The following should be displayed on your console log SpatiaLite version .. 2.3.1 Supported Extensions..

Memory issues migrating large CoreData datastores on iPhone

http://stackoverflow.com/questions/4875553/memory-issues-migrating-large-coredata-datastores-on-iphone

The trick is to pull the NSMigrationManager subclass that is specifically for SQLite store types when you're manually invoking the migration as shown in the last code sample on that page. This isn't a general purpose fix though since it only works..

Is calling -[NSRunLoop runUntilDate:] a good idea?

http://stackoverflow.com/questions/4923621/is-calling-nsrunloop-rununtildate-a-good-idea

this question You have to make sure not to do this from any method that could be called by the run loop you are invoking unless the overlapping call tree is completely re entrant. The Cocoa Touch UI code is not documented as re entrant in fact..

Invoke native date picker from web-app on iOS/Android

http://stackoverflow.com/questions/4946919/invoke-native-date-picker-from-web-app-on-ios-android

it does change the visible value the keyboard input is actually ignored. Shown when reading back the value or when invoking the date picker again. When the keyboard was not yet shown then touching the date input only shows the date picker not the..

Drawing waveform with AVAssetReader

http://stackoverflow.com/questions/5032775/drawing-waveform-with-avassetreader

result waveFormData release assetPictogramFilepath release assetFileURL release return nil An example of invoking this void importMediaItem MPMediaItem item self mediaItem since we will be needing this for playback save the url to the..

Phonegap, iphone - applicationDidFinishLaunching not invoking

http://stackoverflow.com/questions/5041368/phonegap-iphone-applicationdidfinishlaunching-not-invoking

iphone applicationDidFinishLaunching not invoking I'm trying to get started with Phonegap. I have added some code to applicationDidFinishLaunching but this doesn't seem..

Using AVAssetReader to read (stream) from a remote asset

http://stackoverflow.com/questions/6242131/using-avassetreader-to-read-stream-from-a-remote-asset

. HOWEVER copyNextSampleBuffer always returns nil in case of remote MP4's . Since several things UPTO the point of invoking copyNextSampleBuffer work I'm not 100 sure if i copyNextSampleBuffer not working for remote mp4's after all the other steps..

Best way to store data on iphone

http://stackoverflow.com/questions/6390605/best-way-to-store-data-on-iphone

am creating a Questions and answers app for iphone which allows user to answer the questions displayed. Currently I am invoking a web service to store the users answers. But I am slightly worried what if the web service goes down. I need to store the..

My retainCount is increasing?

http://stackoverflow.com/questions/7695425/my-retaincount-is-increasing

openExternalUrl self.artical.link else InternetConnection ShowNoInternetAlert @end Addition when i was invoking the Artical i used avc ArticalViewController alloc initWithNibName @ ArticalViewController bundle nil avc.artical self.feeds..