Recent questions tagged iphone

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iphone - How do I do an Asynchronous NSURLConnection inside an NSOperation?

I want to do an Asynchrous NSURLConnection inside of an NSOperation on a background thread. (it is because I ... up the NSOperation 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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408 views

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iphone - Change page on UIScrollView

I have a UIScrollView with 10 pages. I am able to flick between them. I also want to have 2 buttons (a ... sample code. Can anybody help? 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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403 views

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iphone - how can i trace the finger movement on touch for drawing smooth curves?

like what i want is if i move my finger fast on the iphone screen , then i want like something that it make ... have to find something 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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385 views

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iphone - UIScrollView ImageView with pins on top

I have a UIScrollView which has a UIImageView. I want to show pins on this imageView. When I add pins as ... moving when the scale happens. See Question&Answers more detail:os...

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

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522 views

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iphone - How to change the Font size in UIPickerView?

I have one UIPickerView. This is having nearly 200 items, each items has long texts, so, i want to resize the ... help me? Thanks ! Yuva.M See Question&Answers more detail:os...

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

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306 views

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iphone - Getting Current Time in string in Custom format in objective c

I want current time in following format in a string. dd-mm-yyyy HH:MM How? See Question&Answers more detail:os...

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

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543 views

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iphone - App Store Review Button

How can we make the "please leave us a review in the app store" functional PopUp in an iOS 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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421 views

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iphone - How to create a protocol with methods that are optional?

I noticed methods marked optional in several protocols defined in the iPhone SDK, such as the UIActionSheetDelegate ... methods as optional? See Question&Answers more detail:os...

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

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331 views

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iphone - Delayed UIImageView Rendering in UITableView

Ok, I've got a UITableView with custom UITableViewCells that each contain a UIImageView whose images are being ... help would be great. See Question&Answers more detail:os...

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

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531 views

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iphone - What is the best way to remove all subviews from you self.view?

I was thinking maybe something like this might work: for (UIView* b in self.view.subviews) { [b ... UIImages, Buttons, Textfields etc. See Question&Answers more detail:os...

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

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646 views

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iphone - How to debug "message sent to deallocated instance" in Xcode 4?

I pressed alt+cmd+r and activated NSZombieEnabled in Arguments > Environment Variables. Additionally, I activated it ... this obvious glitch. See Question&Answers more detail:os...

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

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350 views

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iphone - Storing results after screen is disappear

I am developing a game,in that i want to add the points continuously,for this i used plist but whenever the ... to do? 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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389 views

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iphone - i have NSString value in addViewController and i want to display this value in UILabel of DetailsViewController

I am newbie to programming. Any help could be greatly appreciated. It's in AddViewController. NSLog(@"Am Currently at ... 'm making a mistake... See Question&Answers more detail:os...

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

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370 views

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iphone - run app using xcode 4.6 in ios 4.3 simulator

I am actually trying to run my application in 4.3 simulator from xCode 4.6. I copy the sdk for simulator ... the problem? Thank you 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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365 views

1 answer

iphone - Force app to close and run in background

we have an app that has a specific purpose where an exit is required. After the exit a process needs to run in the ... work here }); } } } } See Question&Answers more detail:os...

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

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498 views

1 answer

iphone session management

How can I manage user sessions in an iPhone app? I get a username and password from the user on the first ... technique for that? 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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416 views

1 answer

iphone - Is there a way the Round Rect button to take exactly the same size of an image?

Is there a way the Round Rect button to take exactly the same size of an image?Are there any round buttons? I ... to each other they get mixed. See Question&Answers more detail:os...

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

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438 views

1 answer

iphone - Editing Custom UIView Subclasses in Storyboard

I have an application that uses a UIScrollView to page between a number of dynamically generated UIViews. Right now, I have ... 4.2 with iOS 5. See Question&Answers more detail:os...

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

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434 views

1 answer

iphone - Application windows are expected to have a root view controller at the end of application launch

I am using the facebook iOS SDK setup tutorial: https://developers.facebook.com/docs/mobile/ios/build/ After Step ... synchronize]; } } @end See Question&Answers more detail:os...

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

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399 views

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iphone - CoreMotion - magneticField is always 0

I'm trying to use magnetometer: [myMotionMngr startDeviceMotionUpdatesToQueue: [NSOperationQueue currentQueue] withHandler:^( ... I missing? See Question&Answers more detail:os...

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

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385 views

1 answer

iphone - How does the coordinate system in an CGContextRef look like?

I assume that the origin is on the bottom left, and the y-axis expands up, starting from 0. The x-axis expands ... I didn't get this part 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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359 views

1 answer

iphone - Why NSCalendar's dateFromComponents returns wrong date?

I am expecting 2010-10-11 00:00:00 But instead I receive 2010-10-10 21:00:00 +0000 I know, that ... *retDate = [cal dateFromComponents:comps]; See Question&Answers more detail:os...

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

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434 views

1 answer

iphone - iOS: Update launch screen dynamically

I've designed a launch screen using story board. It's supposed to have 3 images. 2 of these are static, ... any need) is not recommended. See Question&Answers more detail:os...

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

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554 views

1 answer

iphone - Undefined symbols for architecture armv7: "_SCNetworkReachabilityCreateWithAddress"

Right this has become a right pain I have been looking at it for 2 days now and can't seem to solve it. ... How can I remove this extra slash? See Question&Answers more detail:os...

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

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476 views

1 answer

iphone - UIPopoverController does not dismiss when clicking on the NavigationBar

When clicking on a rightBarButton, a UIPopoverController will present. The problem is: when clicking on the ... . 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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357 views

1 answer

iphone - been having a little confusion about the retainCount of NSURLConnection

first look at these code: NSURL *url = [[NSURL alloc] initWithString:@"lasdhfkjasf"]; NSURLRequest *request = [[ ... ,has anybody know about 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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560 views

1 answer

iphone - Remove More Than 2 Trailing zero

I have read many question in stack overflow, what I want is remove 2 or more than two trailing zero behind the ... 35 12.345678 ==> 12.34 See Question&Answers more detail:os...

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

0 votes

477 views

1 answer

iphone - Custom NSLocalizedString?

Is it possible to use the NSLocalizedString infrastructure (based on localizable.strings) with a custom-defined " ... easy way if possible. See Question&Answers more detail:os...

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

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