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2014/10/15 ¤U¤È 10:10:19
iphone Programming Glossary: informationHow to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone there a way to convert the UIImage data into a bitmap representation in which I could extract this information for a given pixel A working code sample would be most appreciated and note that I am not concerned with.. pixelData RGBAPixel CGBitmapContextGetData context return pixelData Read Only Data Previous information method 2 Step 1. I declared a type for byte typedef unsigned char byte Step 2. I declared a struct to..
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript navigationType . In your JavaScript code navigate to some fake URL that encodes the information you want to pass to your app like say window.location fake myApp something_happened param1 param2 param3.. param1 param2 param3 In your delegate method look for these fake URLs extract the information you need take whatever action is appropriate and return NO to cancel the navigation. It's probably best..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults objects for this class and I need to them to last between sessions. Before I was putting all my information in NSUserDefaults but this isn't working. NSUserDefaults setObject forKey Attempt to insert non property.. in the NSUserDefaults. Now I've read up that apparently NSUserDefaults only stores some types of information. So how an I get my objects into NSUSerDefaults I read that there should be a way to to encode my custom..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received EXC_BAD_ACCESS is typically thrown as the result of an illegal memory access. You can find more information in the answers below. Have you encountered the EXC_BAD_ACCESS signal before and how did you deal with..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application to the first person who provides an answer using only documented APIs who responds with sufficient information to get this working on the device. Working on the simulator too would be a bonus. EDIT it appears that..
How do you beta test an iphone app? http://stackoverflow.com/questions/40154/how-do-you-beta-test-an-iphone-app email to each beta tester with the following message To get my app on onto your iPhone I need some information about your phone. Guess what there is an app for that Click on the below link and install and then run..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll methods must figure out what table view it will query and which applicable FRC to pull the information from. The FRC delegate methods must also figure out which tableView to update. It is surprising how.. self.tableView self.searchDisplayController.searchResultsTableView tableView endUpdates Other view information void loadView super loadView UISearchBar searchBar UISearchBar alloc initWithFrame CGRectMake 0 0 self.tableView.frame.size.width..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers objects when appropriate per the MVC design pattern . Usually you want to avoid putting state information inside a controller unless it's strictly presentation data. Second see page 10 of the Stanford presentation..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c whether a delegate responds to a selector every time we want to message it you can cache that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown you're calling. The result could be anything void int char NSString id etc. ARC normally gets this information from the header of the object type you're working with. 2 There are really only 4 things that ARC would.. someMethod The reason for this is because the compiler actually is able to record all of the information about the selector and the object during compilation. It doesn't need to make any assumptions about..
Has anyone implemented the PayPal API through a native iPhone app? http://stackoverflow.com/questions/779423/has-anyone-implemented-the-paypal-api-through-a-native-iphone-app
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring NSNumber numberWithInt dataSent NSNumber numberWithInt dataReceived nil This code collects information of internet usage of an iPhone device and not my application alone . Now if I use internet through WiFi.. en0 is your Wi Fi interface and pdp_ip0 is your WWAN interface. There is no good way to get information wifi cellular network data since particular date time data statistic ifa_data ifi_obytes and ifa_data..
Reducing piracy of iPhone applications http://stackoverflow.com/questions/846309/reducing-piracy-of-iphone-applications process If my application phones home to provide the unique device ID on which it runs what other information would I need to collect e.g. the Apple ID used to purchase the application to create a valid registration..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone its color. Getting the UIImage is the easy part but is there a way to convert the UIImage data into a bitmap representation in which I could extract this information for a given pixel A working code sample would be most appreciated and note that I am not concerned with the alpha value. iphone cocoa touch image bitmap share.. pointer to the image pixelData associated with the bitmap context. pixelData RGBAPixel CGBitmapContextGetData context return pixelData Read Only Data Previous information method 2 Step 1. I declared a type for byte typedef unsigned char byte Step 2. I declared a struct to correspond to a pixel typedef struct RGBPixel byte red byte..
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript and implement the method webView shouldStartLoadWithRequest navigationType . In your JavaScript code navigate to some fake URL that encodes the information you want to pass to your app like say window.location fake myApp something_happened param1 param2 param3 In your delegate method look for these fake URLs extract.. to pass to your app like say window.location fake myApp something_happened param1 param2 param3 In your delegate method look for these fake URLs extract the information you need take whatever action is appropriate and return NO to cancel the navigation. It's probably best if you defer any lengthy processing using some flavor of..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults fix it. I have made a custom class to hold some data. I make objects for this class and I need to them to last between sessions. Before I was putting all my information in NSUserDefaults but this isn't working. NSUserDefaults setObject forKey Attempt to insert non property value ' Player 0x3b0cc90 ' of class 'Player'. That is the.. is the error message I get when I put my custom class Player in the NSUserDefaults. Now I've read up that apparently NSUserDefaults only stores some types of information. So how an I get my objects into NSUSerDefaults I read that there should be a way to to encode my custom object and then put it in but I'm not sure how to implement..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received this open as a catch all for the dreaded Bad Access error. EXC_BAD_ACCESS is typically thrown as the result of an illegal memory access. You can find more information in the answers below. Have you encountered the EXC_BAD_ACCESS signal before and how did you deal with it iphone objective c ios xcode cocoa touch share improve..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application a bounty for this question and I will award the bounty to the first person who provides an answer using only documented APIs who responds with sufficient information to get this working on the device. Working on the simulator too would be a bonus. EDIT it appears that the bounty auto awards to the answer with the highest number..
How do you beta test an iphone app? http://stackoverflow.com/questions/40154/how-do-you-beta-test-an-iphone-app Step A Add devices to the Provisioning Portal Send an email to each beta tester with the following message To get my app on onto your iPhone I need some information about your phone. Guess what there is an app for that Click on the below link and install and then run the app. http itunes.apple.com app ad hoc helper id285691333..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll you can see below that this object is released . All UITableView methods must figure out what table view it will query and which applicable FRC to pull the information from. The FRC delegate methods must also figure out which tableView to update. It is surprising how much of this is boilerplate code. Relevant bits of the header.. tableView controller self.fetchedResultsController self.tableView self.searchDisplayController.searchResultsTableView tableView endUpdates Other view information void loadView super loadView UISearchBar searchBar UISearchBar alloc initWithFrame CGRectMake 0 0 self.tableView.frame.size.width 44.0 autorelease searchBar.autoresizingMask..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers answers which focus on the importance of putting data in model objects when appropriate per the MVC design pattern . Usually you want to avoid putting state information inside a controller unless it's strictly presentation data. Second see page 10 of the Stanford presentation for an example of how to programmatically push a controller..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c better tool support. Speed Optimizations Instead of checking whether a delegate responds to a selector every time we want to message it you can cache that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate NSObject @optional void something id something..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown needs to know what to do with the result of the method you're calling. The result could be anything void int char NSString id etc. ARC normally gets this information from the header of the object type you're working with. 2 There are really only 4 things that ARC would consider for the return value 3 Ignore non object types.. declared statically _controller performSelector @selector someMethod The reason for this is because the compiler actually is able to record all of the information about the selector and the object during compilation. It doesn't need to make any assumptions about anything. I checked this a year a so ago by looking at the source..
Has anyone implemented the PayPal API through a native iPhone app? http://stackoverflow.com/questions/779423/has-anyone-implemented-the-paypal-api-through-a-native-iphone-app
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring cursor ifa_next freeifaddrs addrs return NSArray arrayWithObjects NSNumber numberWithInt dataSent NSNumber numberWithInt dataReceived nil This code collects information of internet usage of an iPhone device and not my application alone . Now if I use internet through WiFi or through 3G I get the the data bytes only in ifi_obytes.. get network statistics for each network interface. In general en0 is your Wi Fi interface and pdp_ip0 is your WWAN interface. There is no good way to get information wifi cellular network data since particular date time data statistic ifa_data ifi_obytes and ifa_data ifi_ibytes are stored from previous device reboot. i don't..
Reducing piracy of iPhone applications http://stackoverflow.com/questions/846309/reducing-piracy-of-iphone-applications application piracy which do not violate Apple's evaluation process If my application phones home to provide the unique device ID on which it runs what other information would I need to collect e.g. the Apple ID used to purchase the application to create a valid registration token that authorizes use of the application Likewise..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone easy part but is there a way to convert the UIImage data into a bitmap representation in which I could extract this information for a given pixel A working code sample would be most appreciated and note that I am not concerned with the alpha value... with the bitmap context. pixelData RGBAPixel CGBitmapContextGetData context return pixelData Read Only Data Previous information method 2 Step 1. I declared a type for byte typedef unsigned char byte Step 2. I declared a struct to correspond to a pixel..
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript webView shouldStartLoadWithRequest navigationType . In your JavaScript code navigate to some fake URL that encodes the information you want to pass to your app like say window.location fake myApp something_happened param1 param2 param3 In your delegate.. fake myApp something_happened param1 param2 param3 In your delegate method look for these fake URLs extract the information you need take whatever action is appropriate and return NO to cancel the navigation. It's probably best if you defer any..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults hold some data. I make objects for this class and I need to them to last between sessions. Before I was putting all my information in NSUserDefaults but this isn't working. NSUserDefaults setObject forKey Attempt to insert non property value ' Player.. custom class Player in the NSUserDefaults. Now I've read up that apparently NSUserDefaults only stores some types of information. So how an I get my objects into NSUSerDefaults I read that there should be a way to to encode my custom object and then..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received Bad Access error. EXC_BAD_ACCESS is typically thrown as the result of an illegal memory access. You can find more information in the answers below. Have you encountered the EXC_BAD_ACCESS signal before and how did you deal with it iphone objective..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application award the bounty to the first person who provides an answer using only documented APIs who responds with sufficient information to get this working on the device. Working on the simulator too would be a bonus. EDIT it appears that the bounty auto awards..
How do you beta test an iphone app? http://stackoverflow.com/questions/40154/how-do-you-beta-test-an-iphone-app Portal Send an email to each beta tester with the following message To get my app on onto your iPhone I need some information about your phone. Guess what there is an app for that Click on the below link and install and then run the app. http itunes.apple.com..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll released . All UITableView methods must figure out what table view it will query and which applicable FRC to pull the information from. The FRC delegate methods must also figure out which tableView to update. It is surprising how much of this is boilerplate.. self.tableView self.searchDisplayController.searchResultsTableView tableView endUpdates Other view information void loadView super loadView UISearchBar searchBar UISearchBar alloc initWithFrame CGRectMake 0 0 self.tableView.frame.size.width..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers of putting data in model objects when appropriate per the MVC design pattern . Usually you want to avoid putting state information inside a controller unless it's strictly presentation data. Second see page 10 of the Stanford presentation for an example..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c Instead of checking whether a delegate responds to a selector every time we want to message it you can cache that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate NSObject..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown of the method you're calling. The result could be anything void int char NSString id etc. ARC normally gets this information from the header of the object type you're working with. 2 There are really only 4 things that ARC would consider for the.. performSelector @selector someMethod The reason for this is because the compiler actually is able to record all of the information about the selector and the object during compilation. It doesn't need to make any assumptions about anything. I checked..
Has anyone implemented the PayPal API through a native iPhone app? http://stackoverflow.com/questions/779423/has-anyone-implemented-the-paypal-api-through-a-native-iphone-app
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring NSArray arrayWithObjects NSNumber numberWithInt dataSent NSNumber numberWithInt dataReceived nil This code collects information of internet usage of an iPhone device and not my application alone . Now if I use internet through WiFi or through 3G I.. interface. In general en0 is your Wi Fi interface and pdp_ip0 is your WWAN interface. There is no good way to get information wifi cellular network data since particular date time data statistic ifa_data ifi_obytes and ifa_data ifi_ibytes are stored..
Reducing piracy of iPhone applications http://stackoverflow.com/questions/846309/reducing-piracy-of-iphone-applications Apple's evaluation process If my application phones home to provide the unique device ID on which it runs what other information would I need to collect e.g. the Apple ID used to purchase the application to create a valid registration token that authorizes..
I get error 0x8badf00d in iPhone app, and is not the usual suspect http://stackoverflow.com/questions/1282491/i-get-error-0x8badf00d-in-iphone-app-and-is-not-the-usual-suspect . This is the error Exception Type 00000020 Exception Codes 0x8badf00d Highlighted Thread 0 Application Specific Information Failed to launch Thread 0 0 JhonSell 0x000c63d6 0x1000 807894 1 JhonSell 0x000c7ffe 0x1000 815102 2 JhonSell 0x000c9646..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone by previous posts and at the bottom of this post provides a read only reference to data . Method 1 Writable Pixel Information I defined constants #define RGBA 4 #define RGBA_8_BIT 8 In my UIImage subclass I declared instance variables size_t bytesPerRow..
Apps are not permitted to access the UDID and must not use the uniqueIdentifier method of UIDevice http://stackoverflow.com/questions/16489079/apps-are-not-permitted-to-access-the-udid-and-must-not-use-the-uniqueidentifier the above APIs were incorrectly flagged to appreview@apple.com. For further information visit the Technical Support Information page. Once these issues have been corrected go to the Version Details page and click Ready to Upload Binary. Continue through..
EXC_BAD_ACCESS (SIGSEGV) crash http://stackoverflow.com/questions/1733317/exc-bad-access-sigsegv-crash SIGSEGV Exception Codes KERN_INVALID_ADDRESS at 0x00000000c0000023 Crashed Thread 0 Application Specific Information iPhone Simulator 3.0 138 iPhone OS 3.0 7A341 Thread 0 Crashed 0 libobjc.A.dylib 0x910e0688 objc_msgSend 24 1 CFNetwork..
XCode 5 Crashes on AppStore Validation http://stackoverflow.com/questions/18913964/xcode-5-crashes-on-appstore-validation queue com.apple.main thread Exception Type EXC_BAD_ACCESS SIGSEGV Exception Codes EXC_I386_GPFLT Application Specific Information objc_msgSend selector name respondsToSelector ProductBuildVersion 5A1413 Thread 0 Crashed Dispatch queue com.apple.main..
Does my application “contain encryption”? http://stackoverflow.com/questions/2135081/does-my-application-contain-encryption under category 5 part 2 There are several exemptions available in US export regulations under Category 5 Part 2 Information Security Encryption regulations for applications and software that use access implement or incorporate encryption. All liabilities..
how to add a contact from my app to iphone address book http://stackoverflow.com/questions/3334047/how-to-add-a-contact-from-my-app-to-iphone-address-book persona ABAddressBookSave libroDirec nil CFRelease libroDirec NSString errorString NSString stringWithFormat @ Information are saved into Contact UIAlertView errorAlert UIAlertView alloc initWithTitle @ New Contact Info message errorString delegate..
Accessing iPhone WiFi Information via SDK http://stackoverflow.com/questions/351954/accessing-iphone-wifi-information-via-sdk iPhone WiFi Information via SDK Is there a way using the iPhone SDK to get WiFi information Things like Signal Strength WiFi Channel and SSID are..
Application Failed to Launch in Time http://stackoverflow.com/questions/3908882/application-failed-to-launch-in-time Failed to Launch in Time How can I diagnose this error Application Specific Information MyApp failed to launch in time Elapsed total CPU time seconds 4913.443 user 3868.270 system 1045.173 56 CPU Elapsed application..
http://stackoverflow.com/questions/3949009/uistatusbarstyleblacktranslucent-is-not-available-on-this-device-ignoring-uist iPad it just sets the status bar to black so there's not too much reason to even check the UI idiom.... Anyway see the Information Property List Key Reference docs if you want to try it. In iOS 3.2 and later applications can designate keys in the Info.plist..
iPhone App Crashing - Error Question http://stackoverflow.com/questions/46220/iphone-app-crashing-error-question but when the app is run in the iPhone simulator it crashes. I get the following error Application Specific Information iPhone Simulator 1.0 70 iPhone OS 2.0 5A331 Terminating app due to uncaught exception 'NSUnknownKeyException' reason ' UIView..
setKeepAliveTimeout and BackgroundTasks http://stackoverflow.com/questions/4777499/setkeepalivetimeout-and-backgroundtasks following log information Exception Type 00000020 Exception Codes 0x8badf00d Highlighted Thread 3 Application Specific Information DemoBackApp 5977 has active assertions beyond permitted time SBProcessAssertion 0xa9da0b0 identifier UIKitBackgroundCompletionTask..
how can you get the app ID for my iPhone application before I submit it to Apple? http://stackoverflow.com/questions/5060680/how-can-you-get-the-app-id-for-my-iphone-application-before-i-submit-it-to-apple
http://stackoverflow.com/questions/6851660/version-vs-build-in-xcode-4 button was removed in Xcode 5 this information is also available from the Software Developer section of the System Information app available by opening Apple menu About This Mac System Report... . For example Xcode 4.2 4C139 . Marketing version 4.2..
Need an API that detects when an iPhone is plugged in http://stackoverflow.com/questions/7301680/need-an-api-that-detects-when-an-iphone-is-plugged-in Implementer's Forum. Using the vendor and product ID you can search for any specific USB device. From my Mac's System Information I can tell you that an iPhone 4 has a product ID of 0x1297 and Apple's vendor ID is 0x05ac. Extra from dissecting that code..
http://stackoverflow.com/questions/773442/what-does-8badf00d-mean excerpt from my crashlogs Exception Type 00000020 Exception Codes 0x8badf00d Highlighted Thread 0 Application Specific Information Failed to deactivate Thread 0 ... nothing suspicious here ... Unknown thread crashed with unknown flavor 5 state_count 1..
App “failed to resume in time” and hangs http://stackoverflow.com/questions/7822988/app-failed-to-resume-in-time-and-hangs 9A334 Report Version 104 Exception Type 00000020 Exception Codes 0x8badf00d Highlighted Thread 0 Application Specific Information Systems.Designer failed to resume in time Elapsed total CPU time seconds 0.000 user 0.000 system 0.000 0 CPU Elapsed application..
iOS Stream Audio from one iOS Device to Another http://stackoverflow.com/questions/8357514/ios-stream-audio-from-one-ios-device-to-another mac #documentation MusicAudio Conceptual AudioQueueProgrammingGuide Introduction Introduction.html I am just lost. Information overload. I've implemented Cocoa With Love's Audio Stream code but I can't figure out how to take the NSData I receive through..
Encrypting SQLite Database file in iPhone OS http://stackoverflow.com/questions/929744/encrypting-sqlite-database-file-in-iphone-os the file or the data stored within the database. Edit The App is a game that will be played against other users. Information about a users relative strengths and weaknesses will be stored in the DB. I don't want a user to be able to jail break the..
failed to send the qLaunchSuccess packet, can't debug in the device http://stackoverflow.com/questions/9834708/failed-to-send-the-qlaunchsuccess-packet-cant-debug-in-the-device information from device Exception Type 00000020 Exception Codes 0x8badf00d Highlighted Thread 0 Application Specific Information åñ æô ‘â failed to launch in time Elapsed total CPU time seconds 20.030 user 17.830 system 2.200 100 CPU Elapsed application..
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