如何从UIView 得到 UIViewController

//获取view的controller
- (UIViewController *)viewController {
for (UIView* next = [self superview]; next; next = next.superview) {
UIResponder *nextResponder = [next nextResponder];
if ([nextResponder isKindOfClass:[UIViewController class]]) {
return (UIViewController *)nextResponder;
}
}
return nil;
}
//点击提交按钮
-(void)buttonPress{

ElectronFrom *electronForm=[[ElectronFrom alloc]init];
[[self viewController].navigationController pushViewController:electronForm animated:YES];
[electronForm release];

}