Recent questions tagged objective

0 votes

591 views

1 answer

objective c - Apple Watch Images not showing on simulator

I am working with the apple watch and I would like to just simply set an image in the storyboard. It is a ... ideas of what I might be missing? See Question&Answers more detail:os...

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

0 votes

633 views

1 answer

objective c - CGBitmapContextCreateImage - vm_copy failed - iPhone SDK

I am having an issue using CGBitmapContextCreateImage in my iPhone app. I am using AV Foundation Framework to grab ... would be great! Brett See Question&Answers more detail:os...

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

0 votes

511 views

1 answer

objective c - How much memory can an iPhone app use?

Can anyone link me to a page that describes memory allocations for iPhone apps. I have heard that you are limited ... find the source for this. See Question&Answers more detail:os...

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

0 votes

701 views

1 answer

objective c - What is the different between NSCFString and NSConstantString?

I declare the object variable as a NSString But when I use the XCode to look into my object, I saw there ... two change to another? Thanks. See Question&Answers more detail:os...

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

0 votes

598 views

1 answer

objective c - Accessing temp directory in Swift

I was trying to access temp directory in Swift. In Objective-C, I could use the following code to do so: - ... that I should look into? Thanks. See Question&Answers more detail:os...

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

0 votes

894 views

1 answer

objective c - NSInteger set to 0 but returns nil

I have an NSInteger in my class like so In @interface: NSInteger currentRow; @property (assign) NSInteger currentRow; ... t get the value back. See Question&Answers more detail:os...

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

0 votes

604 views

1 answer

objective c - Does libxml2 support XPath 2.0 or not?

I've tried to use the XPath 2.0 exp //span/string(.) in libxml2, but it doesn't work. So, my question is: does libxml2 support XPath 2.0 or not? See Question&Answers more detail:os...

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

0 votes

617 views

1 answer

objective c - When and how to use Aggregate Target in xcode 4

I was trying to look for an example of using an Aggregate Target in Xcode4, including its purpose and why a ... from Apple Developer web site? See Question&Answers more detail:os...

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

0 votes

719 views

1 answer

objective c - Clone or Copy UIViewController or UIView

UII need copy, self controller or self.view, i have tried: UIView* viewOfSelf =[self.view copy]; ... selector sent to instance 0x6e0acb0 See Question&Answers more detail:os...

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

0 votes

625 views

1 answer

objective c - Change UITableView row height without dismissing keyboard

I have a TextView inside a UITableViewCell. The text inside the TextView can be edited right there ... UITableView without dismissing keyboard? See Question&Answers more detail:os...

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

0 votes

713 views

1 answer

objective c - IBOutletCollections and Interface Builder on OSX

I have a NSViewController , in which I wish to create a an IBOutletCollection(NSTextField). In my ... IBoutletproperties work fine though. See Question&Answers more detail:os...

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

0 votes

608 views

1 answer

objective c - How to create constant NSString by concatenating strings in Obj-C?

I'm trying to instanciate a constant NSString by concatanating other NSString instances. Here is what I'm doing in ... for your help, Eric. See Question&Answers more detail:os...

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

0 votes

688 views

1 answer

objective c - Converting a CGPoint to NSValue

In CABasicAnimation.fromValue I want to convert a CGPoint to a "class" so I used NSValue valueWithPoint but in ... if in device or simulator. See Question&Answers more detail:os...

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

0 votes

612 views

1 answer

objective c - How to measure the distance in meters between two CLLocations?

How can I get the distance in meters between two CLLocations? CLLocation doesn't provide any method to do it, it seeems. See Question&Answers more detail:os...

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

0 votes

538 views

1 answer

objective c - Determine when NSSlider knob is 'let go' in continuous mode

I'm using an NSSlider control, and I've configured it to use continuous mode so that I can continually update ... reasons I've just outlined. See Question&Answers more detail:os...

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

0 votes

696 views

1 answer

objective c - Why would CFRelease(NULL) crash?

Is there a reason why CFRelease does not check for NULL? Isn't it unacceptable when [nil release]; free(NULL ... NULL; all work perfectly fine? See Question&Answers more detail:os...

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

0 votes

625 views

1 answer

objective c - Apple Watch Images not showing on simulator

I am working with the apple watch and I would like to just simply set an image in the storyboard. It is a ... ideas of what I might be missing? See Question&Answers more detail:os...

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

0 votes

483 views

1 answer

objective c - CGBitmapContextCreateImage - vm_copy failed - iPhone SDK

I am having an issue using CGBitmapContextCreateImage in my iPhone app. I am using AV Foundation Framework to grab ... would be great! Brett See Question&Answers more detail:os...

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

0 votes

557 views

1 answer

objective c - How much memory can an iPhone app use?

Can anyone link me to a page that describes memory allocations for iPhone apps. I have heard that you are limited ... find the source for this. See Question&Answers more detail:os...

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

0 votes

584 views

1 answer

objective c - What is the different between NSCFString and NSConstantString?

I declare the object variable as a NSString But when I use the XCode to look into my object, I saw there ... two change to another? Thanks. See Question&Answers more detail:os...

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

0 votes

695 views

1 answer

objective c - Accessing temp directory in Swift

I was trying to access temp directory in Swift. In Objective-C, I could use the following code to do so: - ... that I should look into? Thanks. See Question&Answers more detail:os...

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

0 votes

836 views

1 answer

objective c - NSInteger set to 0 but returns nil

I have an NSInteger in my class like so In @interface: NSInteger currentRow; @property (assign) NSInteger currentRow; ... t get the value back. See Question&Answers more detail:os...

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

0 votes

736 views

1 answer

objective c - Does libxml2 support XPath 2.0 or not?

I've tried to use the XPath 2.0 exp //span/string(.) in libxml2, but it doesn't work. So, my question is: does libxml2 support XPath 2.0 or not? See Question&Answers more detail:os...

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

0 votes

591 views

1 answer

objective c - When and how to use Aggregate Target in xcode 4

I was trying to look for an example of using an Aggregate Target in Xcode4, including its purpose and why a ... from Apple Developer web site? See Question&Answers more detail:os...

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

0 votes

761 views

1 answer

objective c - Clone or Copy UIViewController or UIView

UII need copy, self controller or self.view, i have tried: UIView* viewOfSelf =[self.view copy]; ... selector sent to instance 0x6e0acb0 See Question&Answers more detail:os...

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

0 votes

651 views

1 answer

objective c - Change UITableView row height without dismissing keyboard

I have a TextView inside a UITableViewCell. The text inside the TextView can be edited right there ... UITableView without dismissing keyboard? See Question&Answers more detail:os...

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

0 votes

631 views

1 answer

objective c - IBOutletCollections and Interface Builder on OSX

I have a NSViewController , in which I wish to create a an IBOutletCollection(NSTextField). In my ... IBoutletproperties work fine though. See Question&Answers more detail:os...

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

0 votes

612 views

1 answer

objective c - How to create constant NSString by concatenating strings in Obj-C?

I'm trying to instanciate a constant NSString by concatanating other NSString instances. Here is what I'm doing in ... for your help, Eric. See Question&Answers more detail:os...

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

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