How to use singleton object into a objective-C Block

Question

 Using a singleton object in a block will create a strong reference cycle in the code ?

As I have more then 5 singleton object in application.

Answer 1

You have to use weak reference of singleton inside blocks.

YourSingleton *singletonInstance = ---- //get your singleton instance here

typeof(YourSingleton) __weak weakSingletonInstance = singletonInstance;

// your block
^
{
   // Now use weakSingletonInstance inside the block.           
}];