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2014/10/15 ¤U¤È 10:11:21
iphone Programming Glossary: memoryHow to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk removeObserver self Note There might be an instance using viewWillDisappear where you receive a memory warning and the observer never gets unregistered so you should account for that as well. Note The domain..
How to add a breakpoint to objc_exception_throw? http://stackoverflow.com/questions/1163981/how-to-add-a-breakpoint-to-objc-exception-throw in this answer i want to ask how do i add location mentioned objective c iphone xcode debugging memory leaks share improve this question I think Brad's answer is pretty clear hopefully this can help..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports created above using CD command atos arch armv7 o YOURAPP.app YOURAPP MEMORY_LOCATION_OF_CRASH. The memory location should be the one at which the app crashed as per the report. Ex atos arch armv7 o 'app name.app'..
http://stackoverflow.com/questions/158914/cropping-a-uiimage of my image context. I was hoping this was Kosher but am I instead attempting to draw over other memory that I shouldn't be touching Theory 2 I'm doing all of this in a background thread. I know there are..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received 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.. From your description I suspect the most likely explanation is that you have some error in your memory management. You said you've been working on iPhone development for a few weeks but not whether you are.. you've come from another background it can take a little while before you really internalise the memory management rules unless you make a big point of it. Remember anything you get from an allocation function..
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application an iPhone app and I need to force it to exit due to certain user actions. After cleaning up memory the app allocated what's the appropriate method to call to terminate the application iphone objective..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints UIImage Method PDF's in a UIImage don't optically scale as well as a Layer approach. The CPU and memory hit on generating the UIImages from a PDFcontext limits prevents using it to create a real time render.. cant be prepared ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing.. time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing a PDF viewer and am rendering..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c their use Or failing that what did you read which helped you get it iphone objective c cocoa memory share improve this question Let's start with retain and release autorelease is really just a special.. count is decremented. If after calling release the reference count is now zero then that object's memory is freed by the system. The basic way this differs from malloc and free is that any given object doesn't.. given object doesn't need to worry about other parts of the system crashing because you've freed memory they were using. Assuming everyone is playing along and retaining releasing according to the rules when..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk BOOL animated NSNotificationCenter defaultCenter removeObserver self Note There might be an instance using viewWillDisappear where you receive a memory warning and the observer never gets unregistered so you should account for that as well. Note The domain you use doesn't matter. It's just testing for a gateway..
How to add a breakpoint to objc_exception_throw? http://stackoverflow.com/questions/1163981/how-to-add-a-breakpoint-to-objc-exception-throw of events that led to the exception within the debugger. now in this answer i want to ask how do i add location mentioned objective c iphone xcode debugging memory leaks share improve this question I think Brad's answer is pretty clear hopefully this can help if you're not finding it clear. In XCode from the top menu click..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports a FOLDER. OPEN terminal application and go to the folder created above using CD command atos arch armv7 o YOURAPP.app YOURAPP MEMORY_LOCATION_OF_CRASH. The memory location should be the one at which the app crashed as per the report. Ex atos arch armv7 o 'app name.app' 'app name' 0x0003b508 This would show you the exact line..
http://stackoverflow.com/questions/158914/cropping-a-uiimage to drawInRect to something that's larger than the bounds of my image context. I was hoping this was Kosher but am I instead attempting to draw over other memory that I shouldn't be touching Theory 2 I'm doing all of this in a background thread. I know there are portions of UIKit that are restricted to the main thread. I..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received EXC_BAD_ACCESS error so I will leave 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 this question From your description I suspect the most likely explanation is that you have some error in your memory management. You said you've been working on iPhone development for a few weeks but not whether you are experienced with Objective C in general. If you've come from.. whether you are experienced with Objective C in general. If you've come from another background it can take a little while before you really internalise the memory management rules unless you make a big point of it. Remember anything you get from an allocation function usually the static alloc method but there are a few others..
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application way to exit iPhone application I am programming an iPhone app and I need to force it to exit due to certain user actions. After cleaning up memory the app allocated what's the appropriate method to call to terminate the application iphone objective c cocoa touch ipad share improve this question Have you..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints a Zoomable UIScrollview But the same issues keep cropping up. UIImage Method PDF's in a UIImage don't optically scale as well as a Layer approach. The CPU and memory hit on generating the UIImages from a PDFcontext limits prevents using it to create a real time render of new zoom levels. CATiledLayer Method Theres a significant.. tiles can be seen rendering even with a tileSize tweak CALayers cant be prepared ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing a PDF viewer and am rendering a UIImage of a page in a.. with a tileSize tweak CALayers cant be prepared ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing a PDF viewer and am rendering a UIImage of a page in a separate thread issues here too..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c retain and autorelease work and what are the conventions about their use Or failing that what did you read which helped you get it iphone objective c cocoa memory share improve this question Let's start with retain and release autorelease is really just a special case once you understand the basic concepts. In Cocoa each.. tell the object you are letting go of it and its reference count is decremented. If after calling release the reference count is now zero then that object's memory is freed by the system. The basic way this differs from malloc and free is that any given object doesn't need to worry about other parts of the system crashing.. The basic way this differs from malloc and free is that any given object doesn't need to worry about other parts of the system crashing because you've freed memory they were using. Assuming everyone is playing along and retaining releasing according to the rules when one piece of code retains and then releases the object any..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk defaultCenter removeObserver self Note There might be an instance using viewWillDisappear where you receive a memory warning and the observer never gets unregistered so you should account for that as well. Note The domain you use doesn't..
How to add a breakpoint to objc_exception_throw? http://stackoverflow.com/questions/1163981/how-to-add-a-breakpoint-to-objc-exception-throw the debugger. now in this answer i want to ask how do i add location mentioned objective c iphone xcode debugging memory leaks share improve this question I think Brad's answer is pretty clear hopefully this can help if you're not finding..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports go to the folder created above using CD command atos arch armv7 o YOURAPP.app YOURAPP MEMORY_LOCATION_OF_CRASH. The memory location should be the one at which the app crashed as per the report. Ex atos arch armv7 o 'app name.app' 'app name' 0x0003b508..
http://stackoverflow.com/questions/158914/cropping-a-uiimage than the bounds of my image context. I was hoping this was Kosher but am I instead attempting to draw over other memory that I shouldn't be touching Theory 2 I'm doing all of this in a background thread. I know there are portions of UIKit that..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received 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.. this question From your description I suspect the most likely explanation is that you have some error in your memory management. You said you've been working on iPhone development for a few weeks but not whether you are experienced with.. C in general. If you've come from another background it can take a little while before you really internalise the memory management rules unless you make a big point of it. Remember anything you get from an allocation function usually the static..
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application I am programming an iPhone app and I need to force it to exit due to certain user actions. After cleaning up memory the app allocated what's the appropriate method to call to terminate the application iphone objective c cocoa touch ipad..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints keep cropping up. UIImage Method PDF's in a UIImage don't optically scale as well as a Layer approach. The CPU and memory hit on generating the UIImages from a PDFcontext limits prevents using it to create a real time render of new zoom levels... tileSize tweak CALayers cant be prepared ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing a PDF viewer and.. be prepared ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing a PDF viewer and am rendering a UIImage of a..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c the conventions about their use Or failing that what did you read which helped you get it iphone objective c cocoa memory share improve this question Let's start with retain and release autorelease is really just a special case once you understand.. it and its reference count is decremented. If after calling release the reference count is now zero then that object's memory is freed by the system. The basic way this differs from malloc and free is that any given object doesn't need to worry about.. and free is that any given object doesn't need to worry about other parts of the system crashing because you've freed memory they were using. Assuming everyone is playing along and retaining releasing according to the rules when one piece of code..
Memory Management in Objective-C [duplicate] http://stackoverflow.com/questions/106627/memory-management-in-objective-c Management in Objective C duplicate Possible Duplicates Learn Obj C Memory Management Where are the best explanations of.. Management in Objective C duplicate Possible Duplicates Learn Obj C Memory Management Where are the best explanations of memory management for iPhone I come from a C C background and the dynamic..
What happens if I don't retain IBOutlet? http://stackoverflow.com/questions/1250518/what-happens-if-i-dont-retain-iboutlet you declare properties for all of your IBOutlets for clarity and consistency. The details are spelled out in the Memory Management Programming Guide . The basic gist is when your NIB objects are unarchived the nib loading code will go through..
Is calling [self release] allowed to control object lifetime? http://stackoverflow.com/questions/1385433/is-calling-self-release-allowed-to-control-object-lifetime if you own it. i.e. the object was obtained with a method starting new or alloc or a method containing copy. Cocoa Memory Management Rules An object must not therefore do self release or self autorelease unless it has previously done self retain..
How to run iPhone program with Zombies instrument? http://stackoverflow.com/questions/1417782/how-to-run-iphone-program-with-zombies-instrument be presented with a screen that asks you to choose a template for the new Trace Document. Select iPhone Simulator Memory Zombies Next you need to choose a target. Go to Chose target Chose target Chose target... Now you need to select the application..
Memory leak detection tools in Xcode http://stackoverflow.com/questions/144261/memory-leak-detection-tools-in-xcode leak detection tools in Xcode Does Apple's Xcode development enviroment provide any tools for memory leak detection I am..
What exactly must I do in viewDidUnload? http://stackoverflow.com/questions/2261972/what-exactly-must-i-do-in-viewdidunload method as well as long as you set them to nil when you release them in viewDidUnload . The following quote from the Memory Management section of Apple's UIViewController documentation describes it in more detail ...in iPhone OS 3.0 and later the..
How many times do I release an allocated or retained object? http://stackoverflow.com/questions/3730804/how-many-times-do-i-release-an-allocated-or-retained-object
instruments with iOS: Why does Memory Monitor disagree with Allocations? http://stackoverflow.com/questions/5518918/instruments-with-ios-why-does-memory-monitor-disagree-with-allocations with iOS Why does Memory Monitor disagree with Allocations As can been seen in this screen shot from instruments Allocations thinks my application.. in this screen shot from instruments Allocations thinks my application Ongo is only using 7.55 MBs of memory while Memory Monitor says 53.30. Further more the free system memory has little to no correlation to the amount of memory that the app.. those who sees this post after the year 2012 The memory really loaded into device's physical memory is the Resident Memory in VM Tracker Instrument. Allocation Instrument only marks the memory created by malloc NSObject alloc and some framework..
iOS Low Memory Crash, but very low memory usage http://stackoverflow.com/questions/5980636/ios-low-memory-crash-but-very-low-memory-usage Low Memory Crash but very low memory usage This has been annoying me for a long time. My app runs taking up about 2.74MB of memory... is from the console MyApp 1205 Warning Received memory warning. Level 1 MyApp 1205 Warning applicationDidReceiveMemoryWarning SpringBoard 30 Warning Received memory warning. Level 1 MobileMail 1199 Warning Received memory warning. Level 1.. not get mobile equipment info dictionary ReportCrash 1206 Error Saved crashreport to Library Logs CrashReporter LowMemory 2011 05 12 160645.plist using uid 0 gid 0 synthetic_euid 0 egid 0 I have removed all calls to imageNamed changed autoreleased..
Memory limit and iOS memory allocation in iphone SDK? http://stackoverflow.com/questions/6044147/memory-limit-and-ios-memory-allocation-in-iphone-sdk limit and iOS memory allocation in iphone SDK Does iOs use non contiguous or contiguous allocation in memory management.. or contiguous allocation in memory management suppose if user allocates more than 128 MB Will the App be closed or Memory will be managed by iOS as if user allocates memory and misses deallocate in Deallocate method is it possible to use more..
How to take picture from Camera & saved in Photo Gallery by programmatically? http://stackoverflow.com/questions/6812634/how-to-take-picture-from-camera-saved-in-photo-gallery-by-programmatically
Programmatically retrieve memory usage on iPhone http://stackoverflow.com/questions/787160/programmatically-retrieve-memory-usage-on-iphone kern_return_t kerr task_info mach_task_self TASK_BASIC_INFO task_info_t info size if kerr KERN_SUCCESS NSLog @ Memory in use in bytes u info.resident_size else NSLog @ Error with task_info s mach_error_string kerr There is also a field in..
Objective c, Memory management of instance members http://stackoverflow.com/questions/8576593/objective-c-memory-management-of-instance-members c Memory management of instance members I am confuzed by the memory management of instance members. I have a class with a ivar DetailedResultsTableViewController..
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