iOS登陆选择主界面

- (void)viewDidLoad {
//云图图片
UIImage *firstimage=[UIImage imageNamed:@"700.png"];
UIImageView *firstiamgeview=[[UIImageView alloc]initWithImage:firstimage];
[firstiamgeview setFrame:CGRectMake(100, 150, 100, 100)];
[self.view addSubview:firstiamgeview];
//登录按钮
UIButton *login=[UIButton buttonWithType:UIButtonTypeRoundedRect];
[login setTitle:@"登陆" forState:UIControlStateNormal];
[login setFrame:CGRectMake(50, 300, 200, 50)];
[login addTarget:self action:@selector(loginclicked:) forControlEvents:UIControlEventTouchUpInside];
login.backgroundColor=[UIColor blueColor];
//注册按钮
UIButton *Register=[UIButton buttonWithType:UIButtonTypeRoundedRect];
[Register setTitle:@"注册" forState:UIControlStateNormal];
[Register setFrame:CGRectMake(50, 370, 200, 50)];
[Register addTarget:self action:@selector(registerclicked:) forControlEvents:UIControlEventTouchUpInside];
Register.backgroundColor=[UIColor blueColor];
[self.view addSubview:Register];
[self.view addSubview:login];

[super viewDidLoad];
// Do any additional setup after loading the view.
}
-(void)registerclicked:(UIButton*)Register
{
RegisterViewController *registermian=[[RegisterViewController alloc]init];
[self.navigationController pushViewController:registermian animated:YES];
}
-(void)loginclicked:(UIButton*)login
{
loginViewController *loginmain=[[loginViewController alloc]init];
[self.navigationController pushViewController:loginmain animated:YES];

}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}