The property Delegate of calayer cause crash.

When used in non-arc and arc environmentsProgramCrash.

 

 1   //  Use-fno-objc to compile the current class  2   3 Needle _ = [[Myview alloc] init];  4   5 Needlelayer = [Calayer layer];  6 Needlelayer. Delegate = Self. Needle;  7  8   9 -( Void  ) Dealloc  10   {  11   [Needle _ release];  12   [Needlelayer release];  13 [Super dealloc]; //  Crash  14   }  15      

 

 

 
1-(Void) Drawlayer: (calayer *) layer incontext: (cgcontextref) Context
 

 

He lightest-Wight solution wocould be to create a small helper class in the file as the uiview that's using the calayer:

In myview. h

 
@ InterfaceMylayerdelegate:Nsobject...@ End
 

In myview. m

@ ImplementationMylayerdelegate-(Void)Drawlayer:(Calayer*)Layer incontext:(Cgcontextref)CTX{...}@ End
 

Just place those at the top of your file, immediately below the # import ctives ves. that way it feels more like using a "private class" to handle the drawing (although it isn' t -- the delegate class can be instantiated by any code that imports the header ).