一句话小计 initWithNibName

- (id)initWithNibName:(NSString *)nibName bundle:(NSBundle *)bundle{self = [super initWithNibName:nilbundle:nil];// Get a pointer to the application bundle objectNSBundle *appBundle = [NSBundle mainBundle];self = [super initWithNibName:@"xxx"bundle:appBundle];if (self) {...}return self;}