2014/10/15 下午 10:05:55

iphone Programming Glossary: dangerous

How to get a rotated, zoomed and panned image from an UIImageView at its full resolution?

http://stackoverflow.com/questions/11104042/how-to-get-a-rotated-zoomed-and-panned-image-from-an-uiimageview-at-its-full-re

recognizer code does not limit the scale factor i.e. you can zoom out in without being limited. That can be very dangerous My capture method can output really large images when you've zoomed out very much. If you have zoomed out the background..

NSManagedObjectContext performBlockAndWait: doesn't execute on background thread?

http://stackoverflow.com/questions/11831946/nsmanagedobjectcontext-performblockandwait-doesnt-execute-on-background-thread

Now before I even get into the details I want to stress that depending on internal workings of libraries is very dangerous. All you should really care about is that you can never expect a specific thread to execute a block except anything tied..

Method Swizzle on iPhone device

http://stackoverflow.com/questions/1637604/method-swizzle-on-iphone-device

Is using subviews in Alert undocumented

http://stackoverflow.com/questions/2032500/is-using-subviews-in-alert-undocumented

For example you might choose to make this button the Cancel button to help users avoid inadvertently causing a dangerous action or you might make it represent the most common response if the resulting action isn 脌 destructive. The following..

Removing and adding persistent stores to a core data application

http://stackoverflow.com/questions/2257557/removing-and-adding-persistent-stores-to-a-core-data-application

your input. iphone cocoa touch core data share improve this question I agree with Louis what you are doing is a dangerous design and you should be rebuilding the entire stack instead of swapping out the stores like that. Rebuilding the full stack..

iPhone: Override UIButton buttonWithType to return subclass

http://stackoverflow.com/questions/2562713/iphone-override-uibutton-buttonwithtype-to-return-subclass

depending on the value of the type parameter. As UIButton doesn't provide an initWithType method I believe it would be dangerous to try and override buttonWithType . I suggest you subclass UIControl instead. You can then add a button as a subview to..

How can I “reset” the tabbar in an iPhone application

http://stackoverflow.com/questions/4342742/how-can-i-reset-the-tabbar-in-an-iphone-application

and there is a Logout button. Also if a user login with a different user see the old data of the previous user very dangerous . Here's the code Delegate.h UITabBarController tabBarController LoginViewController loginView Delegate.m didFinishLaunchingWithOptions..

iPhone - MPMoviePlayerController : sample code demonstrating two problems

http://stackoverflow.com/questions/4535751/iphone-mpmovieplayercontroller-sample-code-demonstrating-two-problems

NSMutableString as retain/copy

http://stackoverflow.com/questions/4995254/nsmutablestring-as-retain-copy

either case copy write semantics to external clients and subclasses is not implicitly clear and the implementation is dangerous. sharing an NSMutableString is generally a bad design. NSMutableString is not thread safe. it makes no sense for clients.. a bad design. NSMutableString is not thread safe. it makes no sense for clients to access and mutate the string it's dangerous. any design which shared objects which are not thread safe should be considered with care. sharing in this case also extends..

What are the Dangers of Method Swizzling in Objective C?

http://stackoverflow.com/questions/5339276/what-are-the-dangers-of-method-swizzling-in-objective-c

are the Dangers of Method Swizzling in Objective C I have heard people state that method swizzling is a dangerous practice. Even the name swizzling sugests that it is a bit of a cheat. Method Swizzling is modifying the mapping so that.. properly. A simple safety measure you can take is to only swizzle in load . Like many things in programming it can be dangerous but understanding the consequences will allow you use it properly. 1 Using the above defined swizzling method you could..

Suspend the application

http://stackoverflow.com/questions/5360846/suspend-the-application

applications should initiate and control actions. Although an application can suggest a course of action or warn about dangerous consequences it 䏭 usually a mistake for the app to take decision making away from the user. The best apps find the correct.. user. The best apps find the correct balance between giving people the capabilities they need while helping them avoid dangerous outcomes. Users feel more in control of an app when behaviors and controls are familiar and predictable. And when actions..

Why is autorelease especially dangerous/expensive for iPhone applications?

http://stackoverflow.com/questions/613583/why-is-autorelease-especially-dangerous-expensive-for-iphone-applications

is autorelease especially dangerous expensive for iPhone applications I'm looking for a primary source or a really good explanation to back up the claim that.. I'm looking for a primary source or a really good explanation to back up the claim that the use of autorelease is dangerous or overly expensive when writing software for the iPhone. Several developers make this claim and I have even heard that..

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

to call that return void or other non objects you could enable compiler features to ignore the warning but it may be dangerous. I've seen Clang go through a few iterations of how it handles return values that aren't assigned to local variables. There's..

NSDefaultRunLoopMode vs NSRunLoopCommonModes

http://stackoverflow.com/questions/7222449/nsdefaultrunloopmode-vs-nsrunloopcommonmodes

while the table view is scrolling could improve the UI because we can see the images while scrolling infact this is dangerous as the final effect will be a scrolling not fluid. So don't add NSURLConnection to the run loop in such case but use the..

Will Apple accept Apps with deprecated code? [closed]

http://stackoverflow.com/questions/7909986/will-apple-accept-apps-with-deprecated-code

sooner or later. One of the risks of continuing to use deprecated methods is that they may be more primitive and dangerous than newer versions may not take into account all current OS realities and possibly less well tested by Apple over time...

Frustrating UIWebView Delegate Crash issue

http://stackoverflow.com/questions/8995146/frustrating-uiwebview-delegate-crash-issue

why you release the webView in viewDidDisappear . On the other hand you allocate it in viewDidLoad . This asymmetry is dangerous since whenever the main view disappears for any reason the webView will be removed and when the view reappears it is not..