Recent questions tagged iPhone

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iphone - Received memory warning. Level=1 when showing a UIImagePickerController

This is driving me crazy!!! I'm getting a "Received memory warning. Level=1" whenever I attempt to show a ... to anyone who can 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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iphone - UIImage created from CMSampleBufferRef not displayed in UIImageView?

I'm trying to display a UIImage in real-time coming from the camera, and it seems that my UIImageView is ... know if you need more information. See Question&Answers more detail:os...

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

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427 views

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iphone - Resize UIImage and change the size of UIImageView

I have this UIImageView and I have the values of its max height and max width. What I want to achieve is ... would be much appreciated, 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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404 views

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iphone - What's the difference between KERN_INVALID_ADDRESS and KERN_PROTECTION_FAILURE?

What's the difference between KERN_INVALID_ADDRESS and KERN_PROTECTION_FAILURE on iPhone OS? I have two crash reports from ... in my code. See Question&Answers more detail:os...

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

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338 views

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iphone - Returning multiple values from a method in Objective-C

I asked a similar question, but I couldn't get it working exactly. I'm building an iPhone app, and there is ... , how would I call this method? See Question&Answers more detail:os...

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

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368 views

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iphone - How to draw a triangle programmatically

I have a triangle solver, I want a way to use the values I get from the answer to draw a triangle to the screen that matches 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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345 views

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iphone - How do I set UITableViewCellSelectionStyle property to some custom color?

I am developing an iPhone application, in my table view I wanted custom color for Cell Selection Style, I ... reference? 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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iphone - unichar and NSString - how interchangeable are these?

There is an NSString method -characterAtIndex: which returns an unichar. (unichar)characterAtIndex:(NSUInteger)index I ... of unichar items? See Question&Answers more detail:os...

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

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341 views

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iphone - Xcode 3.2.1 GCC CLANG and LLVM demystification

The readme included with the new Xcode 3.2.1 this week says the following: Static code analysis is fully ... for a high-level overview. 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

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iphone - Save UIImage, Load it in Wrong Orientation

I am using the following code to save and load images that I pick from either the library or take ... always return as UIImageOrientationUp. See Question&Answers more detail:os...

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

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402 views

1 answer

iphone - How to get Duration from AVPlayer (Not AVAudioPlayer)?

I would like to make a UISlider(scrubber) for my AVPlayer. But since this is not an AVAudioPlayer, it doesn' ... seems very hard to understand. See Question&Answers more detail:os...

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

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517 views

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iphone - How to change the uitextview font size

can any one help to change the font size in UITextView. [textView setFont:[UIFont fontWithName:@"ArialMT" size:30]] ... one but it doesn't work. See Question&Answers more detail:os...

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

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893 views

1 answer

iphone - HTTP "Content-Disposition: attachment" and downloading files on iOS web browser

I want my users to be able to download a PDF file and have the browser treat it as a file, not just ... Safari browser. Not a native app. See Question&Answers more detail:os...

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

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558 views

1 answer

iphone - How to change uitableview delete button text

Hi there I am trying to change the text that is showing in the delete button when a user swipes a uitableviewcell ... not sure how to use 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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364 views

1 answer

iphone - ObjectiveC Parse Integer from String

I'm trying to extract a string (which contains an integer) from an array and then use it as an int in a ... integer without a cast What's 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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388 views

1 answer

iphone - How to implement water ripples?

I'm working on an iphone game. In that i had to produce water ripples. I dont know how to get that. I ... this concept. Can any one guide me? See Question&Answers more detail:os...

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

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287 views

1 answer

iphone - UINavigationBar tintColor with gradient

I'd like to change programmaticaly the tintColor of a UINavigationBar and keep the gradient as in Interface Builder. ... is kept. Any ideas? See Question&Answers more detail:os...

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

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325 views

1 answer

iphone - How to send post data and image file to server Xcode

How can I upload some text info (a text string) and an image file over the same http post request to server. ... text to work with it. 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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364 views

1 answer

iphone - Using mergedModelFromBundles: and versioning (CoreData)

I'm trying to use the migration feature in CoreData. I've followed the Apple Documentation. I have a problem in the ... ". Do you have any idea? 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 - How do I create/render a UIImage from a 3D transformed UIImageView?

After applying a 3d transform to an UIImageView.layer, I need to save the resulting "view" as a new UIImage... ... : contextInfo:), 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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344 views

1 answer

iphone - How to get rid of the warning "file was built for unsupported file format" when linking with a static library?

I've an application which includes an external library I developed, and I'm getting the following warning message ... the same library? Thanks! See Question&Answers more detail:os...

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

0 votes

272 views

1 answer

iphone - How do I build an xcode project for the itunes store?

I've got my apps running on my iphone, great, however to list on the itunes store I need the "universal binary" ... for me with a few clicks? See Question&Answers more detail:os...

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

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386 views

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iphone - UIWebView and local css file

I want to style a web page meant for the desktop so that it is presentable on a UIWebView on iPhone. I do ... Am I barking up the wrong tree? See Question&Answers more detail:os...

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

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389 views

1 answer

iphone - How to change tab bar item text color

How can I change the color of "More.." text in tabbar to match with its icon color. (Right now ... Any suggestions will be really helpful. See Question&Answers more detail:os...

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

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365 views

1 answer

iphone - Using ALAssetsLibrary and ALAsset take out Image as NSData

I wish to extract the image using ALAssetsLibrary and ALAsset directly in the form of a NSData object. Using a ... EXIF details. Please Help. See Question&Answers more detail:os...

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

0 votes

343 views

1 answer

iphone - What is a runloop?

After reading the documentation for NSRunLoop I did not understand very much. I am spawning a secondary thread that ... to explain it? Thanks. See Question&Answers more detail:os...

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

0 votes

390 views

1 answer

iphone - UITableView scrollToRowAtIndexPath

I'm trying to make my table view remember it's last position, so that after the app is run again, it will ... .row forKey:@"content_row"]; } See Question&Answers more detail:os...

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

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357 views

1 answer

iphone - Calling setCollectionViewLayout:animated does not reload UICollectionView

I am using a UICollectionView with two custom layouts - which are subclassed from UICollectionViewFlowLayout When my view ... to what I want. See Question&Answers more detail:os...

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

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