ios - How do I use CFArrayRef in Swift? -


I am using Objective-class in my Swift Project through a bridging header. The method signature looks like this: 

  - Some cement (some type) some parameters;

I started by getting an example of class, calling method, and storing the value: 

  var myInstance = MyClassWithThatMethod (); Var cfArr = myInstance.someMethod (some value);

Then try to get the value in the array: 

  var valueInArrayThatIWant = CFArrayGetValueAtIndex (cfArr, 0);

However, I get the error unmanaged & lt; Cfarray & gt; Not like 'CFArray' . Unmanaged & lt; Cfarray & gt; also means?

I looked, but I do not need to change the array in a fast array (though it would be good). I need to be able to get value from the array.

I also tried CFArray method to pass in a function: 

  func doSomeStuffOnArray (myArray: NSArray) {} < / Code>

Although I get the same error when using: 

  doSomeStuffOnArray (cfArr); // unmanaged & lt; CFArray & gt; I am using  CFArray  because I want to store an array of  CGPathRef  Required, which can not be stored in  NSArray . 
 
 So how do I use the  CFArray  Swift?

comment with
  • as you have said, " Festivals> CF_RETURNS_RETAINED or CF_RETURNS_NOT_REETAINED . In your case: 

      - (CFRRERFF) Some methods: (some type) some parameters CF_RETURNS_NOT_RETAINED; Memory managed object with  
  •  
    •  
  •  
     or  lake-lined value ()  or  le-rented value ()  convert unmanaged objects in your case Swift: 
     
      var cfArr = myInstance.someMethod (someValue) Ktakanukrmanit value ()  
     
    •

Comments

Post a Comment

Popular posts from this blog

eclipse plugin - Run java code error: Workspace is closed -

To create an automated project, I created a plug-in project with the following dependencies: Org.eclipse.core.resources org.eclipse.equinox.registry org.eclipse.core.runtime and the following The Java class is located in the src folder: Package Examiner; Import org.eclipse.core.resources.IProject; Import org.eclipse.core.resources.IWorkspaceRoot; Import org.eclipse.core.resources.ResourcesPlugin; Import org.eclipse.core.runtime.CoreException; Import org.eclipse.core.runtime.IProgressMonitor; Import org.eclipse.core.runtime.NullProgressMonitor; Public class tes {public static zero main (string [] args) {// TODO auto generated method stub IProgressMonitor progress monitor = new NullProgressMonitor (); IWorkspaceRoot root = ResourcesPlugin.getWorkspace (). GetRoot (); Ipoject project = root.jetproject ("desired projectname"); Try {Project.create (progress monitor); Project.open (progressMonitor); } Grip (CoreException E) {// TODO Auto generated blocking block e....
Read more

c - Error on building source code in VC 6 -

When I create my project in VC6, the BScMKE reports the following error Linking .. Creating Library ... .. / ... / PB / Bean / Debub / ICEERP.Lib and Object ........ P.B. / Bean / DBube / ICREPlay.APP Browse information file ... BSMMK: ​​error can not be read from BK 1505: file '../../PB/bin/TmpOut/ICReplay/Debug/ICReplay_PB.bsc' Error executing bscmake.exe Can someone help me? 2 Reason for reference from: "ICReplay_PB .bsc "file will be corrupted The trunk of the file will be happening with the compiler running out of disk space or is being interrupted when creating .sbr file I think this answer will help you!
Read more