HelloWorldViewController:
@interface HelloWorldViewController : UIViewController
@end
@implementation HelloWorldViewController
-(void)loadView {
UIView *contentView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];
contentView.backgroundColor = [UIColor lightGrayColor];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 320.0f, 32.0f)];
NSLog(@"addd label..");
@interface HelloWorldVi
