Recent questions tagged iPhone

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iphone - Set background color of the deletion control of a UITableViewCell

In an iPhone/iPad app, I'm using a UITableView to display a list of items that can be edited. I can ... . How do I accomplish 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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846 views

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iphone - How to set up an SCM in Xcode?

I know Xcode can be hooked up to an SCM. But how would I set this up from scratch? How to check out / ... files into that, after setting it up? See Question&Answers more detail:os...

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

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910 views

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iphone - Add a file association with tiff files on iOS

I'd like to create a file associate with tiff files in my iOS app (i.e. so that my app appears as a target for ... "no, you can't do that"? See Question&Answers more detail:os...

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

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903 views

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iphone - UIScrollView setContentSize breaks view with Auto Layout

I am using Auto Layout in my iPhone app and have a UIScrollView. I need to change the content size of my ... with auto layout enabled? 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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862 views

1 answer

iphone - creating back arrow shaped leftBarButtonItem on UINavigationController

I have a view with a navigation controller that I am showing modally and I want to add a back ... Any suggestions are greatly 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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840 views

1 answer

iphone - Prevent default keyboard from showing when UITextField is pressed

Is there a way to make a custom keyboard to pop up when a user presses on a UITextField. I have a ... instead of the default apple keyboard. See Question&Answers more detail:os...

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

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862 views

1 answer

iphone - UItabBar changing View Controllers

i have some difficulties changing tab bar controllers. Basically I have UITabBarController with 3 controllers. First ... Bar cotrollers = 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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1.1k views

1 answer

iphone - How to create UILabel with clickable first word

I want to create label in iOS, can anyone help me to make the first word of the label's text bold ... always the username. 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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860 views

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iphone - Why there is an invalid context error?

Here is the code I use to draw: - (void) drawSomething { CGContextRef context = UIGraphicsGetCurrentContext(); ... the context is invalided? See Question&Answers more detail:os...

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

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1.0k views

1 answer

iphone - How can I set the font size of UITextView?

I have to set the font size and font family of a dynamically created textView, so that it gives same appearance as ... Any idea 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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836 views

1 answer

iphone - decoding quoted-printables

I am looking for a way to decode quoted-printables. The quoted-printables are for arabic characters and look ... but couldn't find decoding. See Question&Answers more detail:os...

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

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1.1k views

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iphone - iOS 9 read file permission

In iOS 9+ I get a nil on any attempt to read from file. The file in this case is a image file path. using ... the paths do not match in any way See Question&Answers more detail:os...

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

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849 views

1 answer

iphone - Is it better to autorelease or release right after?

There are a lot of cases in which one would alloc an instance, and release it right after it's being assigned ... practice here? Pros and cons? See Question&Answers more detail:os...

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

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728 views

1 answer

iphone - dequeueReusableCellWithIdentifier behavior changed for prototype cells?

In iOS5, using ARC and prototype cells for tableView on storyboard, can I replace the code below: static NSString ... Thank's in advance! Arildo See Question&Answers more detail:os...

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

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852 views

1 answer

iphone - Connect a UILabel in Interface Builder and XCode?

I am trying to do something as simple as add a Label to a View in XCode and IB and I can't figure out ... difficult to make a label have text. See Question&Answers more detail:os...

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

0 votes

847 views

1 answer

iphone - Creating Linked Lists in Objective C

typedef struct { NSString *activty; NSString *place; float latitude; float longitude; } event; typedef struct { ... objective-c? Thank you! See Question&Answers more detail:os...

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

0 votes

740 views

1 answer

iphone - Is there a way to install older iOS SDKs in Xcode?

I'd like to ensure some backward compatibility for my apps by compiling them using the older SDKs to test for ... versions in the latest Xcode? See Question&Answers more detail:os...

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

0 votes

850 views

1 answer

iphone - Selecting different storyboards based on device type

I have a universal app in which I'm loading my main storyboard manually in application:didFinishLaunchingWithOptions ... the correct storyboard? See Question&Answers more detail:os...

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

0 votes

1.1k views

1 answer

iphone - Error logging into Instagram in iOS app using UIWebView

I'm following Instagram authentication [recommended] steps using UIWebView on an iOS app. After entering credentials, hitting ... to fix it yet. See Question&Answers more detail:os...

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

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771 views

1 answer

iphone - Unrecognized Selector SenTestCase for Category

I created a new Cocoa Touch Static Library project with Unit Testing in XCode 4 and added a category: // ... if my description is inadequate. See Question&Answers more detail:os...

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

0 votes

971 views

1 answer

iphone - Pan gesture interferes with UISlider

I'm trying to create a sliding menu (kind of like in Facebook/Twitter apps) and my version successfully uses pan ... to set (if any?) Thanks See Question&Answers more detail:os...

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

0 votes

844 views

1 answer

iphone - Objective-c NSArray init versus initWithCapacity:0

Do [[NSMutableArray alloc] init]; and [[NSMutableArray alloc] initWithCapacity:0]; compile into the exact ... memory and runtime performance? See Question&Answers more detail:os...

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

0 votes

799 views

1 answer

iphone - dequeued UITableViewCell has incorrect layout until scroll (using autolayout)

I have a custom UITableViewCell subclass which has had autolayout constraints applied to it in Interface Builder. The ... reusing the cell?) See Question&Answers more detail:os...

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

0 votes

929 views

1 answer

iphone - Empty NSMutableArray , not sure why

Ok so I populate the array like this: NSMutableArray *participants; for(int i = 0; i < sizeofpm; i++){ ... doesnt seem to be working. Thanks! See Question&Answers more detail:os...

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

0 votes

827 views

1 answer

iphone - OCR using openCV

I wants to give effects on image using openCV, I am struggling from last 2 days and do little bit ... background and change image orientation. See Question&Answers more detail:os...

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

0 votes

784 views

1 answer

iphone - Can you swap the NIB file for a UIViewController that's already on-screen?

For instance: Create a new UIVC using initWithNibName, using "nib-v1" Display it, e.g. using [( ... app will simply crash horribly. See Question&Answers more detail:os...

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

0 votes

908 views

1 answer

iphone - Persisting CoreLocation

I have a need to store the current location to 'disk' on the iphone if the application I'm writing is ... it to a CLLocation object)? See Question&Answers more detail:os...

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

0 votes

720 views

1 answer

iphone - custom MKAnnotation class for changing leftCalloutAnnotationView

I have created a custom class for the MKAnnotation @interface NeighborMapAnnotation : NSObject <MKAnnotation> { ... custom MKAnnotation class? See Question&Answers more detail:os...

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

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