Recent questions tagged iPhone

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iphone - Why am I seeing "This application does not support this device's CPU type"?

When trying to build and install an application on an iPod running iOS 4.2.1, I'm seeing the error This application ... and how can I fix 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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582 views

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iphone - iOS 7 Custom UINavigationBar TitleView moves when Pushing or Popping new View Controller

I am using a custom title view for a UINavigationBar with the following code: // Set a label to the nav bar ... what am I doing wrong? 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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595 views

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iphone - CLLocationCoordinate2D to CLLocation

i have the following loop in my viewDidLoad: for(int i=1; i<[eventsArray count]; i++) { NSArray * ... ! thank you all for helping beforehand See Question&Answers more detail:os...

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

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645 views

1 answer

iphone - UITableView delegate action when tableView is scrolled?

Is there a UITableView delegate-action that runs when the tableView is being scrolled? This is probably really easy, but ... it. Thank you :) See Question&Answers more detail:os...

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

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556 views

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iphone - Scrolling through UIScrollView in Interface Builder for Xcode 4

This seems to me as though it would be a common problem, but I can't seem to find the answer anywhere. ... would at least be something. 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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687 views

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iphone - iOS Assertion Failure in UICollectionView

I'm getting the error ... *** Assertion failure in -[UICollectionView _dequeueReusableViewOfKind:withIdentifier:forIndexPath ... light on 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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627 views

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iphone - How to print a double with full precision on iOS?

Test case: NSLog(@"%f", M_PI); NSLog(@"%@", [NSString stringWithFormat:@"%f", M_PI]); NSLog(@"%@", [ ... as defined in math.h) Any clues? 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 to remove whitespace in a string?

I have a string say "Allentown, pa" How to remove the white space in between , and pa using objective c? See Question&Answers more detail:os...

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

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541 views

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iphone - Sorting NSMutableArray By Object's Property

So this is a rather basic question regarding the best way to sort an NSMutableArray of custom objects. I have ... . Thanks for any help. See Question&Answers more detail:os...

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

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436 views

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iphone - UITableView, having problems changing accessory when selected

I'm using a UITableView to allow selection of one (of many) items. Similar to the UI when selecting a ... row] [tableView reloadData]; } See Question&Answers more detail:os...

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

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503 views

1 answer

iphone - object_getIvar fails to read the value of BOOL iVar

object_getIvar(id object, Ivar ivar) reads the values of iVArs properly but fails on a BOOL type iVar and crashes. ... any way to resolve 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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609 views

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iphone - how to enumerate all available Wifi networks at range?

I read on google that this is not possible, and that on OS 2.0, it was some undocumented Api to accomplish ... 0....any news regarding 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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494 views

1 answer

iphone - NSURLConnection SSL HTTP Basic Auth

I am unable to get a url request to do both ssl urls and basic authentication. I did check the other related ... and basic and it works fine. See Question&Answers more detail:os...

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

0 votes

553 views

1 answer

iphone - Pass object as a parameter to wcf service in Objective C on iOS

I have a wcf service which accepts a parameter like this: [DataContract] public class Person { [DataMember ... :request delegate:self]; 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

1 answer

iphone - UITextField in UITableViewCell - adding new cells

I am trying to create a table view similar to the YouTube video uploader view in the Photo Gallery on the ... [self.tableView endUpdates]; } See Question&Answers more detail:os...

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

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426 views

1 answer

iphone - Setting Bar Button Item color in a custom navigation bar

I created a custom navigation bar and a right navigation button using the XIB. This works fine. But I need to ... change this color? Thank you. See Question&Answers more detail:os...

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

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534 views

1 answer

iphone - SUBQUERY in core data

I can't understand what's wrong with my predication. I have the next database scheme: DataItem(color_ids) <->> ( ... > 0 Thanks for your help. See Question&Answers more detail:os...

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

0 votes

708 views

1 answer

iphone - NSDate expressed in different time zones, i.e. local time zone (GMT-400) to PST

I know how to use NSTimeZone to derive the offset for the current time in another time zone. NSDate always returns ... . What am I doing wrong? See Question&Answers more detail:os...

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

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468 views

1 answer

iphone - Create springboard like main view

Is there some sample code, or an easy way, to implement an application with as its first view something like ... iPhone feel. 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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523 views

1 answer

iphone - How to upload video to Vine programmatically on iOS?

What I can find online is all about retrieving information from Vine (through undocumented APIs). How can I upload ... to Vine or Instagram." See Question&Answers more detail:os...

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

0 votes

613 views

1 answer

iphone - EXC_BAD_ACCESS (SIGSEGV) crash

How do I trace the crash ? Process: iAddressGrabber [253] Path: /Users/egrabber/Library/Application Support/ ... gs: 0x00000037 cr2: 0xc0000023 See Question&Answers more detail:os...

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

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496 views

1 answer

iphone - Fading out an UIButton when touched

I've got a Selected-state and a Normal-state for an UIButton that both are UIImages. When a button is ... [UIView commitAnimations]; Cheers Nik See Question&Answers more detail:os...

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

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566 views

1 answer

iphone - GPUImageMovie playback controls

I'm trying to control the playback of a GPUImageMovie. What I would like to archive is jump from a frame to ... , but apparetly it's null. See Question&Answers more detail:os...

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

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474 views

1 answer

iphone - How to Access String Variable in One View Controller to Another view Controller

I am new to iphone development, Now i want to access the string variable in all the view controller, but i know ... .please help me out. Thanks. See Question&Answers more detail:os...

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

0 votes

492 views

1 answer

iphone - How do I update the UI in the middle of this thread?

Below is a block of code that runs in a separate thread from my app's main thread. How do I get the ... ]; } [server release]; } See Question&Answers more detail:os...

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

0 votes

620 views

1 answer

iphone - Playing Multiple Videos on iPAD

I am facing some problem in playing multiple videos on iPAD. I am trying to play multiple thumbnail videos on the ... me. Thanks in advance... See Question&Answers more detail:os...

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

0 votes

487 views

1 answer

iphone - Runtime change the language/localization in Three20

Is it possible to change the Three20 language/localization at runtime without restarting the app? Currently, I managed ... in the main.m See Question&Answers more detail:os...

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

0 votes

466 views

1 answer

iphone - UIControl - changing assigned selectors: addTarget & removeTarget

I'm using 10 buttons in my interface and need, from time to time, to change the button's selector. Am I ... to fire when it is pressed. See Question&Answers more detail:os...

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

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