how to retain view after addSubview of UIViewController with ARC

问题

How to handle situation when I use ARC and add view of UIViewController?

MyViewController *vc = [[MyViewController alloc] initWithNibName:@"MyViewController" bundle:nil];
[someView addSubview:vc.view]; //this retain vc.view

because addSubview retain onlu view, not controller, so controller is released. Before ARC there was a way to retain controller as long as neede, but how to prevent ARC to release View Controller?

回答1:

I had similar situation solved by declaring vc as property with default strong attribute.

回答2:

#define AntiARCRetain(...) void *retainedThing = (bridge_retained void *)__VA_ARGS; retainedThing = retainedThing

And then call AntiARCRetain(controller);

回答3:

Why would you need a new ViewController there?
You should just add your View as Subview and handle everything with the ViewController of "someView"

来源：https://stackoverflow.com/questions/9144959/how-to-retain-view-after-addsubview-of-uiviewcontroller-with-arc