Recent questions tagged iPhone

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250 views

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iphone - UIStringDrawing methods don't seem to be thread safe in iOS 6

Using any UIStringDrawing methods on two threads simultaneously causes a crash. My understanding was that all ... appreciate any 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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634 views

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iphone - navigationItem.backBarButtonItem not working? Why is the previous menu still showing as the button?

Trying to customize my back button in a drilldown navigation controller. On my one view controller I have an ... Did I miss something? 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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319 views

1 answer

iphone - Accessing the current position of UIView during animation

I am trying to find the current position of an iPhone ImageView that is animating across the screen. I ... position of an animating imageView? See Question&Answers more detail:os...

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

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286 views

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iphone - Is there a way to prevent the keyboard from dismissing?

I realize that this is the inverse of most posts, but I would like for the keyboard to remain up even if ... know a way, please enlighten me! See Question&Answers more detail:os...

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

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447 views

1 answer

iphone - Detect when UITableViewCell goes off the screen

I'm implementing a rich UITableView with custom created UITableViewCell, I show these on the screen in one fashion, ... seems a bit tricky :) See Question&Answers more detail:os...

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

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380 views

1 answer

iphone - Applying multiple transforms to a UIView / CALayer

Is there any problem applying multiple transforms to a UIView and it's corresponding CALayer? Specifically, can ... design patterns for 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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324 views

1 answer

iphone - How to hide the status bar programmatically in iOS 7?

In ios7, how can I hide the statusbar programmatically? I am using XCode 4.6.1 (ios6.1) and I want to implement this in XCode itself. See Question&Answers more detail:os...

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

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420 views

1 answer

iphone - Limit a double to two decimal places without trailing zeros

I read this and that. I want this exactly: 1.4324 => "1.43" 9.4000 => "9. ... release]; doubleValueWithMaxTwoDecimalPlaces = nil; 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 - When will [MFMailComposeViewController canSendMail] return NO

My iPhone app is using the MFMailComposeViewController class to send an in-app email with an attachment. The app ... method return NO? ~ 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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395 views

1 answer

iphone privateapi - detect hotspot enabling in iOS with private api's

ok so i want to detect weather the user has enabled hotspot/tethering or not in a iOS device. I can use private ... 't make it to the app store See Question&Answers more detail:os...

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

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733 views

1 answer

iphone - display soft keyboard (iPad) when is connected a bluetooth input device

I'm really bangin' my head because I can't find the way to show the soft keyboard when there's a ... bother about rejection. 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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502 views

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iphone privateapi - Get CellID, MCC, MNC, LAC, Signal strength, quality and Network in iOS 8.3

How to get cell id using private apis in ios 8.3 as previous core telephony private apis are not working in latest ios sdk 8.3. See Question&Answers more detail:os...

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

0 votes

231 views

1 answer

iphone - Point to location using compass

I am trying to develop a compass for an appliation which has a set of annotations on a map. I would like to ... even if the iPhone is rotated? See Question&Answers more detail:os...

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

0 votes

321 views

1 answer

iphone - iOS - Get ARP table

I am trying to build a network scanner. I know the procedure so I want to ping all available hosts in ... approving the ARP table feature? See Question&Answers more detail:os...

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

0 votes

247 views

1 answer

iphone - Right align magnifying glass icon in UISearchBar

In Cocoa-Touch we find a control UISearchBar. I need to customize it so that the search icon (which we click ... tutorials where we can find it? See Question&Answers more detail:os...

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

0 votes

263 views

1 answer

iphone - access camera from uiwebview?

Is it possible to access iphone's camera from uiwebview? I know phonegap does it, but how to make it work without phonegap? Thanks. See Question&Answers more detail:os...

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

0 votes

319 views

1 answer

iphone - RestKit Object Mapping Relationships without KVC

After reading the Object Mapping-Guide on GitHub for RestKit my problem didn't disappear, so perhaps somebody can ... objects from server ... See Question&Answers more detail:os...

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

0 votes

275 views

1 answer

iphone - Setting static variables in Objective C

I can't seem to find a way to set the static int I have created to assign unique ids to every object I save to ... "); }*/ return self.idGen; } See Question&Answers more detail:os...

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

0 votes

429 views

1 answer

iphone - Reduce UIImage size to a manageable size (reduce bytes)

I want to reduce the number of bytes of an image captured by the device, since i believe the _imageScaledToSize ... the dictionary. Any idea? See Question&Answers more detail:os...

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

0 votes

310 views

1 answer

iphone - How to take picture from Camera & saved in Photo Gallery by programmatically?

In iPhone Apps, I want to take pictures from Camera & save into Photo Gallery by programmatically. Is it ... you have. Thanks in advance See Question&Answers more detail:os...

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

0 votes

559 views

1 answer

iphone - Using performSelector:withObject:afterDelay: with non-object parameters

I want to invoke setEditing:animated: on a table view with a slight delay. Normally, I'd use performSelector: ... better way to do it? See Question&Answers more detail:os...

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

0 votes

376 views

1 answer

iphone - Building with LLVM and any optimization causes app to crash on startup

When I try to build my app with LLVM 2.0 in XCode 4.0.1 and any level or optimization that is not ... vs. the xcodebuild command line interface? See Question&Answers more detail:os...

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

0 votes

393 views

1 answer

iphone - How to hide UITabBarController programmatically?

Is it possible to hide it with animation ? See Question&Answers more detail:os...

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

0 votes

351 views

1 answer

iphone - Using NSXMLParser with CDATA

I'm parsing an RSS feed with NSXMLParser and it's working fine for the title and other strings but one ... currentDate appendString:string]; } } See Question&Answers more detail:os...

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

0 votes

325 views

1 answer

iphone - iDevice camera shows black instead of preview

I am developing an app that captures images from iDevice's camera and upload it to web service. NO problem ... imagePicker animated:YES]; } } See Question&Answers more detail:os...

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

0 votes

454 views

1 answer

iphone - Instagram API prevents redirection to iOS app upon successful login with 400 bad request error

I'm trying to integrate Instagram login into my app to get the logged in user's details, I've registered my ... up things. thanks in advance. See Question&Answers more detail:os...

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

0 votes

379 views

1 answer

iphone - UIToolbar tint on iOS 4

just switched to iOS 4 on my iPhone 3GS and some of my apps broke. One issue I had is that I had a ... Anyone knows what broke in the process? See Question&Answers more detail:os...

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

0 votes

596 views

1 answer

iphone - Why doesn't Remove Observer from NSNotificationCenter:addObserverForName:usingBlock get called

I'm confused on why the observer is never removed in the following code. In my viewDidAppear I have the ... Can anyone provide any guidance? See Question&Answers more detail:os...

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

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