Recent questions tagged iPhone

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iphone - UIButton event 'Touch Up Inside' not working. 'Touch Down' works fine

I've got a UIButton in a UIView, which is in a UIViewController that I've allocated and inited from a .xib ... I get no response. Regards, Rich See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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298 views

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iphone - Using NSFetchedResultsController Without UITableView

Is it wrong to use an NSFetchedResultsController purely for data management, i.e., without using it to feed a ... I might be missing something. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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304 views

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iphone - How can we write " in nsstring?

I have to initialize string as "Rose" including Quotation Mark. How to write " in our string? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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472 views

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iphone - How to use xcode compiler warnings to determine minimum IOS deployment target

I'm building an iOS app using Xcode 3.2.5 with the Base SDK set to iOS 4.2 I know I've used ... exist in the iOS deployment target version? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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404 views

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iphone - Is there a way to cancel an animated UITableView/UIScrollView setContentOffset:animated:?

My app is crashing when my UITableView is released whilst animating. The app functions without issue so long as ... in the midst of animating? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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530 views

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iphone - How to get notified when the status bar height changes?

Does the OS send notifications when the status bar height changes? For example that fat in-call status bar? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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234 views

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iphone - What is the difference between the different padding types on iOS?

On iOS, the Certificate, Key, and Trust Services API contains the following padding types: kSecPaddingNone ... is highly appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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497 views

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iphone - How can I detect whether an iOS device is in silent mode or not?

I've been looking for hours and I can't seem to find any API that explains how to detect whether an ... ones have been deprecated. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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393 views

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iphone - dateFromString always returns null with dateformatter

I have the following code: NSDateFormatter * df = [[NSDateFormatter alloc] init]; [df setDateFormat:@"yyyy-MM-dd HH ... null date. Why is this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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461 views

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iphone - how do I create a new EKCalendar on iOS device?

I have an app where I want to schedule some events. So I want to create a new calendar for my app if ... reference that when adding new events. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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493 views

1 answer

iphone - NSDateFormatter dateFromString gives the wrong date

I've already tried the suggestions in other posts similar to this with no avail. Here is the situation: I ... December 31st... Thanks everyone! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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653 views

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iphone - iOS Autolayout - Frame size not set in viewDidLayoutSubviews

I'm working on a keyboard for iOS 8 using Autolayout to place the buttons on the view. When I'm changing ... none of them covered my question. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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469 views

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iphone - iOS SDK - How to get the status bar back when using UIImagePickerController?

As soon as I add a UIImagePickerController sub view to my view the status bar disappears and I can't ... setStatusBarHidden:NO animated:NO]; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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458 views

1 answer

iphone - Filter Array with dictionaries using NSPredicate

There is an Array with each element being a NSDictionary. NSMutableArray *mutArr = [NSMutableArray array]; for ( ... method. Thanks in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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346 views

1 answer

iphone - What causes a journal file to be created in SQLite?

I started noticing a weird behavior with my SQLite queries for my iPhone application. Whenever I execute an "INSERT" ... to make it go away? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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780 views

1 answer

iphone - NSGenericException', reason: 'Unable to install constraint on view

Terminating app due to uncaught exception 'NSGenericException' Terminating app due to uncaught exception 'NSGenericException', ... 0, 0}>' See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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580 views

1 answer

iphone - How does one subtract hours from an NSDate?

I would like to subtract 4 hours from a date. I read the date string into an NSDate object use the following code: ... ]]; What do I do next? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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313 views

1 answer

iphone - Converting a date format in objective C

How can i convert the following date "Sun Jul 17 07:48:34 +0000 2011" to the following format " ... ]; [objDateFormatter dateFromString:sDate]; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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392 views

1 answer

iphone - Empty Settings Bundle in Xcode 4.2

I'm trying to create a settings bundle for my iPhone application. However, if I create one, it becomes empty, ... ideas. Anyone know of this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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418 views

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iphone - select multiple rows from uitableview and delete

i am displaying a list of items in a tableview.i need to select and delete multiple rows from the table at a ... any resources on how to do this See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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267 views

1 answer

iphone - The identity certificate for com.xyz.profile.mdm could not be found?

I've bumped into this issue while trying to install a MDM profile onto an ipad as the final part of OTA enrollment. ... </key> <false/> </dict> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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410 views

1 answer

iphone - MPMoviePlayerController & .m3u8 playlist

I would like to use a .m3u8 playlist containing remote mp4 files with MPMoviePlayerController, did you success with ... for your help. Thierry See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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377 views

1 answer

iphone - sectioned UITableView sourced from a pList

I'm having trouble finding a easy to understand tutorial on having a sectioned UITableView which gets its data ... for 2 different sections. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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284 views

1 answer

iphone - Facebook connect Batch requests and FQL error problem

I'm developing an iPhone iOS app with FB connect. I'm trying to get a lot of data for each of my ... of facebook it should have been working. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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364 views

1 answer

iphone - How do I change the background of a UINavigationBar?

I'd like to change the background of my UINavigationBar to a [UIColor colorWithImage:], but it isn't ... the UINavigationController to use it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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553 views

1 answer

iphone - Change Navigation bar Background image on each navigation

I am working on iPhone app. I have added Navigation bar Background image With interface: - @interface UINavigationBar ... ? Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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411 views

1 answer

iphone - Realtime formatting with NSNumberFormatter in a UITextfield

I have UITextfield where a user can put in a dollar amount, I would like the textfield always to be ... [numberFormatter stringFromNumber:c]; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

360 views

1 answer

iphone - What's the difference between setting an object to nil vs. sending it a release message in dealloc

I have Object: MyClass *obj= [[MyClass alloc] init]; What's the difference between: [obj release]; // Only ... pointer i must check is it nil? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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