Recent questions tagged iPhone

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iphone - Z-ordering of MKAnnotationViews

I'm getting fairly frustrated with the limitations of MKMapKit. My current problem has to do with the z- ... solved #1 or #2 successfully? 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

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iphone - how to play local video file?

I have created .mov video file with my screen(desktop) capture software and I want that video to play in my ... to play.. pls help !! See Question&Answers more detail:os...

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

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257 views

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iphone - Core Data could not fulfill fault for object after obtainPermanentIDs

I'm getting data from a webserver, processing it on a child private background context called backgroundMOC. It is ... on the child context? See Question&Answers more detail:os...

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

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326 views

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iphone - How do I encode "&" in a URL in an HTML attribute value?

I'd like to make a URL click able in the email app. The problem is that a parameterized URL ... [UIApplication sharedApplication] openURL:url]; See Question&Answers more detail:os...

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

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513 views

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iphone - EXC_BAD_ACCESS when copying or retaining Block

As far as I understand a Block acts like an object, in that you can send copy or release messages to it, ... and everything runs as it should. See Question&Answers more detail:os...

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

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487 views

1 answer

iphone - How to draw arc/curve line with MKOverlayView on MKMapView

Help needed now. I can draw lines with MKPolyline and MKPolylineView, but how to draw an arc or curve lines ... on the MKMapView? Great 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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367 views

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iphone - CADisplayLink stops updating when UIScrollView scrolled

Title is quite self explanatory, but I have some animation being done in a loop triggered by CADisplayLink. ... to cancel this behaviour? See Question&Answers more detail:os...

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

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259 views

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iphone - What precisely happens when iOS installs an update to an app?

What is the official, documented behavior when you install an update to an app? This question asks the same ... . Please link to documentation! See Question&Answers more detail:os...

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

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458 views

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iphone - Can't get UITextField to autoshrink text

I have a UITextField on a table view cell, and when it's text becomes too long I would like the font size to ... the user does not want it to. See Question&Answers more detail:os...

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

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277 views

1 answer

iphone - How do I test if IOS device has telephone capabilities?

I want to offer phone support in my app at the press of a button for iPhone users, and display ... restrict platform, just detect capabilities. See Question&Answers more detail:os...

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

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604 views

1 answer

iphone - When are files from NSCachesDirectory removed?

In what circumstances would files in the iOS NSCachesDirectory get removed? Obviously, delete and reinstall an ... conditions? Anything else? See Question&Answers more detail:os...

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

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497 views

1 answer

iphone - Altering the background color of cell.accessoryView and cell.editingAccessoryView

Whenever I add an accessoryView to my UITableViewCell, it doesn't carry the background color across? I ... without subclassing UITableViewCell? See Question&Answers more detail:os...

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

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467 views

1 answer

iphone - How to play movie files with no file extension on iOS with MPMoviePlayerController or AVPlayer?

I want to play a movie in iOS 4.3 on the iPad. I've successfully used MPMoviePlayerController and AVPlayer to load ... I rename it all is fine. See Question&Answers more detail:os...

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

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390 views

1 answer

iphone - UIWebView finished loading Event

Is it possible to start an event when an UIWebView (Iphone) has finished loading the URL. How can I find out, the current URL of the UIWebView? See Question&Answers more detail:os...

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

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290 views

1 answer

iphone - AurioTouch & FFT for an instrument tuner

I'm trying to write a simple tuner (no, not to make yet another tuner app), and am looking at the ... have any experience with those? 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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282 views

1 answer

iphone - ABAddressBook ABSource and ABSourceType

I am attempting to create an app that can be used to search an Exchange GAL, however, I am finding the new 4 ... work with the above...thanks. See Question&Answers more detail:os...

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

0 votes

397 views

1 answer

iphone - Using 'Like' with the Facebook Graph API on iOS

I am using the latest Facebook SDK for iOS and Graph API. Works Great. I'm trying to 'Like' status updates, ... 10000. Anyone know why this is? See Question&Answers more detail:os...

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

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334 views

1 answer

iphone - Moving an object randomly around the screen

I'm trying to animate a UIButton to move randomly around the screen in different directions. The code below is ... back and forth? 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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291 views

1 answer

iphone - Using quaternion instead of roll, pitch and yaw to track device motion

Please bear with my long question, I am trying to make it as clear as possible. What i am trying to do is, ... = 150+(tempYaw - [self.deviceStatus doubleForKey:@"DeviceYaw"]); yY...

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

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387 views

1 answer

iphone - Mixing Unity generated code with Objective-C in iOS?

Is it possible to mix iOS code and interface elements with Unity generated iOS code? For example if I am working with ... I am wrong... 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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345 views

1 answer

iphone - How can you play music from the iPod app while still receiving remote control events in your app?

Ok, I'm trying to let a user choose songs from their iPod library to listen to, but I still want to ... Anyone? Anyone? Bueller? Bueller? M See Question&Answers more detail:os...

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

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309 views

1 answer

iphone - How to check if an ALAsset still exists using a URL

I've got an array containing ALAsset urls (not full ALAsset objects) So each time I start my application I want ... allways nil thx for the help See Question&Answers more detail:os...

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

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448 views

1 answer

iphone - How do I detect a touch on a UIBezierPath and move a ball along that?

How do I move a ball along a specific UiBezierPath? Is that possible? I've tried everything including doing a hit ... a touch along a path? See Question&Answers more detail:os...

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

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271 views

1 answer

iphone - What video formats are compatible with the assets library?

What video formats are compatible with the iPhone's assets library? In other words, for what video formats ... the iPhone Reference Library. See Question&Answers more detail:os...

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

0 votes

340 views

1 answer

iphone - Create new UIImage by adding shadow to existing UIImage

I've taken a look at this question: UIImage Shadow Trouble But the accepted answer didn't work for me. What ... something obvious I'm missing? See Question&Answers more detail:os...

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

0 votes

320 views

1 answer

iphone - How to pull up a UIKeyboard without a UITextField or UITextView?

I'm currently developing an OpenGL ES game for the iPhone and iPod touch. I was wondering how I can ... using a UITextField of 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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550 views

1 answer

iphone - How to fetch distinct values in Core Data?

So in looking through Core Data Snippets, I found the following code: ... [request setEntity:entity]; [request ... any assistance you can offer. See Question&Answers more detail:os...

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

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330 views

1 answer

iphone - Keeping a long-term reference to an IOS AddressBook entry

Given that an ABRecordID can change between cloud syncs and under other circumstances out of my control, how can I ... work what am I missing? See Question&Answers more detail:os...

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

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