关于UINavigationController的pushViewController:animated:

Question

ViewController *view=[[ViewController alloc] init];
[self.navigationController pushViewController:controller animated:YES];
[view release];

这段代码中的view是保存在内存中还是？

Answer 1

view是保存在内存中的

Answer 2

ViewController *view=[[ViewController alloc] init]; // view retain count = 1;
[self.navigationController pushViewController:controller animated:YES]; // view retain count = 2;
[view release]; // view retain count = 1;