objective-c tag

189 questions

1 answers
54 views
0

I want to use my own icon for UIBarButtonItem

I'd like to put my own image in UITabBarButtonItem, but if you set the png image, The 32*32 image is just the right size, but the image quality gets rough.However, if you set the 64*64 image, it is to...

swift ios objective-c xcode

2 years ago

4 answers
108 views
0

Is it possible to receive iBeacon radio waves without specifying a UUID?

Regardless of the UUID, I would like to list iBeacon nearby.Is it possible to receive iBeacon radio waves without specifying a UUID?I look forward to your kind cooperation.

ios objective-c ibeacon

2 years ago

1 answers
43 views
0

In iOS Objective-C, I want to cancel the conversion work of the text input into the UITextView.

How can I take the attached image A to B by program control?In other words, in UITextView (it's an HTML form in the image...), I wanted to erase the unspecified input string in the markedTextRange and...

ios objective-c

2 years ago

3 answers
125 views
0

How to separate operations by area with iBeacon

I would like to install several iBeacons so that when I enter the area of each Beacon, I can do other things (background).I thought it would be possible to change the Major with the same UUID, but wou...

ios objective-c ibeacon

2 years ago

2 answers
47 views
0

I want to add animation to the pie chart.

I am making a pie chart, but I would like to add an animation that changes the value of the graph from the left to the right.What are the options?Gray code CGContextSaveGState(context);CGFloat x = rec...

objective-c

2 years ago

1 answers
45 views
0

On iOS, I want to register tasks to be performed in a few hours to a few tens of days, and move the registered tasks even if the application process is turned off.

iOS appI have looked into various items below.However, I couldn't find anything to do what I wanted to do.DispatchQueueI was able to run in the background, but when I turned off the app process, it st...

swift ios objective-c

2 years ago

1 answers
47 views
0

Which is the best way to initialize NSMutableString: allocinit, new, string?

I have a question about initializing NSMutableString for objective-c.NSMutableString*ms1 = NSMutableString string;NSMutableString* ms2 = [[NSMutableString alloc] init];NSMutableString* ms3 = [NSMutabl...

ios objective-c

2 years ago

1 answers
77 views
0

detect the completion of a camera shoot

I implemented the camera using the UIImagePickerController, but how do I detect that the camera shooting is over?Can't I use the UIImagePickerController?When I tried to use the article How to use AVCa...

ios objective-c uiimagepickercontroller

2 years ago

1 answers
106 views
0

I want to do sectioning when displaying table views based on NSSet.

This is my first time to ask a question.It may be difficult to read, but please forgive me.CoreData is trying to create a two-tier table view.The data models are as follows:·Main class　Attribute Name,...

ios objective-c uitableview coredata

2 years ago

2 answers
69 views
0

I want to measure iPhone usage time (time the device is not sleeping)

Question 1It seems that they are measuring the usage time of the terminal.(General>Usage>Battery Usage>Time of use)Is it possible to get that information from the app?Question 2Is it possible to start...

ios objective-c swift xcode iphone

2 years ago

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