NSObject类工作

Question

I am using NSObject class in my project and I want to use network indicator in NSObject class like when I call any function of that class network indication starts and once code comes out from class, network indicator stops.

For starting network indicator, I am using initialize() function as:

override class func initialize () {
    UIApplication.sharedApplication().networkActivityIndicatorVisible = true
}

Now I want to know in which function, I stop network indicator. Basically which function call at last in NSObject class?

Answer 1

您可能可以实现-dealloc方法，该方法仅在删除对象时才调用。

Answer 2

If the deinit( ) method is not working it means that you are not deallocating the object properly, you may have a memory leak there(only if you're intetionally make it work deallocating the object).

Another approach would be a defer {} implementation in the methods that would set the indicator to true.

func myMethod(){
    defer{
        UIApplication.sharedApplication().networkActivityIndicatorVisible = false
    }
} 

If you're using func initialize() you probably can use func finalize()

override class func finalize () {
    UIApplication.sharedApplication().networkActivityIndicatorVisible = false
}