Recent questions tagged iPhone

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iphone - Creating UIImage from raw RGBA data

I have been trying to convert an array RGBA data (int bytes) into a UIImage. My code looks like as follows ... about it but with little success. See Question&Answers more detail:os...

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

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264 views

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iphone - Determining Trust With NSURLConnection and NSURLProtectionSpace

I would like to ask a followup question to a previously posed question. I've got the code to create an NSURLRequest/ ... challenge]; } else{... See Question&Answers more detail:os...

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

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447 views

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iphone - Add a custom selector to a UIBarButtonItem

I am an iOS newbie. I have a navigation bar button which when clicked should execute a function ... ; [doneBarButtonItem release]; See Question&Answers more detail:os...

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

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312 views

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iphone - Position a UIView relative to the bottom of the parent view?

How can I align a UIView to the bottom of the parent so that the Y coordinate of the frame is relative to the ... of the height of the parent. See Question&Answers more detail:os...

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

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311 views

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iphone - How do I use a UIWebView in a Table Cell?

I'm building a table with some text that is HTML, so I am using a UIWebView as a subview ... :contentWebView atIndex:contentIndex]; } See Question&Answers more detail:os...

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

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320 views

1 answer

iphone - Get String Between Two Other Strings in ObjC

I am trying to parse a string and get another string in the middle. ie. Hello world this is a string I need ... do this, with RegEx or without? See Question&Answers more detail:os...

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

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250 views

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iphone - Does Key Value Observing Work on UITextView's Text Property?

I'm having the worst time getting key value observing working in with a UITextView's text property. I can ... any additional info is needed. See Question&Answers more detail:os...

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

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478 views

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iphone - what is relation between masksToBounds and cornerRadius?

My scroll has some views that is cornerRadius = 10.0 and masksToBounds = YES. This causes a performance issue ... with this setting. 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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354 views

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iphone - Pattern for wrapping an Asynchronous JavaScript function to make it synchronous

I'm working with a JavaScript API where most of the functions are asynchronous. The API is the WebKit JavaScript ... on the iPhone. 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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731 views

1 answer

iphone - How to determine intersection of CGPaths

My Question is something similar to this. I have 2 CGPathRef and 1 will be moved by finger touch. I want to ... been found in the mean time. See Question&Answers more detail:os...

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

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501 views

1 answer

iphone - becomeFirstResponder not working in iOS 8

I am using UITextField's method becomeFirstResponder to show the keyboard. This is working in iOS 7. But in iOS 8 this ... to do it in iOS 8? See Question&Answers more detail:os...

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

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451 views

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iphone - Avoid Video Compression when Selecting Movie with UIImagePickerController?

I'm using UIImagePickerController to allow my user to select a video from the asset library. When the ... avoid this compression operation? See Question&Answers more detail:os...

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

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273 views

1 answer

iphone - What is a long-term method I can use to uniquely identify an iOS device?

What is the best way to uniquely register an iOS Device, which won't be limited by future Apple restrictions? My ... can rely on for the future? See Question&Answers more detail:os...

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

0 votes

349 views

1 answer

iphone - Open file in another app

My app needs to open some file types in other apps, like dropbox app does, it could list the installed apps which ... How can get the app list? See Question&Answers more detail:os...

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

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334 views

1 answer

iphone - Is it possible to access a UITableView's ScrollView In Code From A Nib?

Right now I am creating a UITableView in a FlipsideView nib. I don't seem to be able to change the background ... I can set the rounded corners? See Question&Answers more detail:os...

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

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421 views

1 answer

iphone - UIPickerView - 1st row selection does not call didSelectRow

I have a UIPickerView on my UIView along with a UITextField. I am letting the user select a value from the ... and then select the 1st row. See Question&Answers more detail:os...

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

0 votes

358 views

1 answer

iphone - UITableViewCell's contentView's width with a given accessory type

On an iPhone, how do you figure out the width of a table view cell's content view when it is showing a ... (This is related to this question.) See Question&Answers more detail:os...

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

0 votes

460 views

1 answer

iphone - How can I load a local HTML file into the UIWebView?

How can we load our own html file into the UIWebView? See Question&Answers more detail:os...

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

0 votes

524 views

1 answer

iphone - UITableView Not Respecting heightForHeaderInSection/heightForFooterInSection?

I have a UITableView where in some instances, certain sections have zero rows. My goal is that when this is true, ... 0. 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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292 views

1 answer

iphone - How to react to applicationWillResignActive from anywhere?

What's the code to subscribe to an event like applicationWillResignActive in any place in your iphone application? ... to the concerning class? See Question&Answers more detail:os...

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

0 votes

413 views

1 answer

iphone - Having trouble getting UIView sizeToFit to do anything meaningful

When I add a subview to a UIView, or when I resize an existing subview, I would expect [view sizeToFit] ... be missing something here. Thanks. See Question&Answers more detail:os...

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

0 votes

314 views

1 answer

iphone - In-House App Disappears After Install

I'm currently building an iPhone app for a client which will be distributed in-house. My Client has just created ... am I not doing? Thanks. See Question&Answers more detail:os...

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

0 votes

468 views

1 answer

iphone - Crop UIImage to fit a frame image

I need to crop a UIImage, taken with the device camera, so that it fits inside another UIImage, which ... finding a solution for this. See Question&Answers more detail:os...

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

0 votes

550 views

1 answer

iphone - [UILabel copyWithZone:]: unrecognized selector sent to instance

I feel like I'm banging my head against the wall here (and I'm ready to do that, frankly). I'm trying ... ) Nothing else - before or after. See Question&Answers more detail:os...

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

0 votes

468 views

1 answer

iphone - How to add a gesture recognizer to a UIWebView subclass?

If I add a gesture recognizer to a subclassed UIWebView instance called webView, e.g.: UILongPressGestureRecognizer * ... on the web view? See Question&Answers more detail:os...

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

0 votes

344 views

1 answer

iphone - iOS use the volume buttons as input

I've recently downloaded an app that uses the 'Volume -' button to toggle a value, and it uses the 'Volume +' ... Any ideas on how this is done? See Question&Answers more detail:os...

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

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270 views

1 answer

iphone - determine ipad device

I am writing a universal app for both iphone and ipad. How do I determine if the device is an iPad. I ... iPhone, iPod Touch) with iPhone SDK See Question&Answers more detail:os...

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

0 votes

271 views

1 answer

iphone - Camera image changes orientation

I been trying to upload camera images from iPhone to my web server but some how the images ... :returnData encoding:NSUTF8StringEncoding]; See Question&Answers more detail:os...

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

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