Recent questions tagged iPhone

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How do I make a custom UISegmentedControl? I have 2 images, 1 that should be displayed when the segment ... as active/inactive background? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - Find/Replace in Xcode using Regular Expression

I have the following function calls at several places in my class. [myClass doOperationOne]; [myClass ... Regular Expression Find/Replace? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - Change UISearchBar/Keyboard Search Button Title

In the UISearchBar control, is the a way to change the Search key title for the keyboard to Done? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - How can I get the UITableView scroll position so I can save it?

Is there any way to find out which UITableViewCell is at the top of the scroll window? I'd like to get the ... it was at when it last exited. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - Where are ${EXECUTABLE_NAME} and ${PRODUCT_NAME} defined

Where can I find information on how to modify these ${EXECUTABLE_NAME} ${PRODUCT_NAME} These are only displayed in . ... find these ${} values. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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246 views

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iphone - Method to find device's camera resolution iOS

Whats the best method to find the image resolution going to be captured using setting AVCaptureSessionPresetPhoto. I ... capturing the image. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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345 views

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iphone - Play local notification default sound when displaying UIAlertView?

I'm writing a reminders app for iPhone that displays reminders using local notifications. If a reminder goes off ... a UIAlertView. Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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338 views

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iphone - Hiding the Keyboard when losing focus on a UITextView

So I have a UITextView that I'm using to allow the user to submit some text. My problem is, I can't ... ' by tapping away from the UITextView. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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302 views

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iphone - Subdirectories within an iOS application

Is there a way to have directories within an .app? At the moment if I add a file into Xcode, ... flat filesystem within my application bundle. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - Removing App ID from Developer Connection

How do I remove an App ID from the developer program portal area? I mistakenly added a couple of app id's under ... not seeing a way to do so. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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211 views

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iphone - What is the difference between Delegate and Notification?

What is the difference between Delegate and Notification? I understood like delegate and protocol, @protocol ... delgate or NSnotification. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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335 views

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iphone - Unbalanced calls to begin/end appearance transitions for UITabBarController

I have an UITabBarController, when initial run, I want to overlay a login view controller but received error. ... me? Thanks in advance! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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316 views

1 answer

iphone - How to customize appearance of UISearchBar

I want to customize the search bar, I mean the white box. Can I do it? Is there some documentation about ... box smaller? I mean less height See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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272 views

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iphone - Referencing AppDelegate instance variables

I have a project that is based on the Navigation Based Application template. In the AppDelegate are the methods - ... from within the NIB file. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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343 views

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iphone - How do I save a UIImage to a file?

If I have a UIImage from an imagePicker, how can I save it to a subfolder in the documents directory? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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234 views

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iphone - How to draw a color wheel in objective-c

I am trying to draw a color wheel for an iPhone, but I can't get the gradient to rotate around a point. ... rotates around a point like this: See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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472 views

1 answer

iphone - How to put an image as the navigation bar title

I want to put a .png image in the middle of the navigation bar instead of the title written in text. Could you ... know how to do that? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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386 views

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iphone - How to extend protocols / delegates in Objective-C?

If i want to extend a class like AVAudioPlayer, whats the best way to also add another method to ... : AVAudioPlayer { } @end See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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634 views

1 answer

iphone - NSTimeInterval to HH:mm:ss?

If I have an NSTimeInterval that is set to say 200.0, is there a way to convert that into 00:03:20, I was ... :%02d:%02d, myHour, myMin, mySec]? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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405 views

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iphone - Force a WebView link to launch Safari?

I have a UIWebView embedded within an iPhone app of mine. I want to be able to have certain links within ... within my embedded webview? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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481 views

1 answer

iphone - Best practice when implementing copyWithZone:

I am trying to clear up a few things in my head about implementing copyWithZone:, can anyone comment on the ... iVars directly i.e. _month? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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251 views

1 answer

iphone - How to integrate Facebook in iOS 6 using SLRequest?

I've been looking around trying to figure out how to integrate Facebook in iOS6 using SLRequests. I was able to ... I hope this helps someone. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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253 views

1 answer

iphone - Photos app-like gap between pages in UIScrollView with pagingEnabled

UIScrollView in paging mode assumes the pages are located right next to each other, with no gap. However if you open ... use it in my projects. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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276 views

1 answer

iphone - How to combine/ merge 2 images into 1

I would like to know what to do to save 2 images into 1 image. One of the ... (); UIGraphicsEndImageContext(); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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303 views

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iphone - Do I need to release xib resources?

If I have something like a UILabel linked to a xib file, do I need to release it on dealloc of my view? The reason I ... release];//????????? } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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335 views

1 answer

iphone - CTFramesetterSuggestFrameSizeWithConstraints sometimes returns incorrect size?

In the code below, CTFramesetterSuggestFrameSizeWithConstraints sometimes returns a CGSize with a height that is not big enough ... height + 1); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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717 views

1 answer

iphone - iOS Custom UIImagePickerController Camera Crop to Square

I'm trying to create a camera like Instagram where the user can see a box and the image would crop to ... be 320x320 exactly inside that square? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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413 views

1 answer

iphone - How to properly release an AVCaptureSession

I'm using the AVFoundation classes to capture the live video stream from the camera and to process the video ... ]; [session release]; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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