#import <UIKit/UIKit.h>@interface RootViewController : UIViewController@end 

#import "RootViewController.h"#import "UXLabel.h"@interface RootViewController ()@end@implementation RootViewController- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{  self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];  if (self) {    // Custom initialization  }  return self;}- (void)viewDidLoad{  [super viewDidLoad];  // Do any additional setup after loading the view.    UXLabel* label=[[UXLabel alloc] initWithFrame:CGRectMake(50, 100, 100, 30)];  label.backgroundColor=[UIColor redColor];  label.stringColor=CGRectMake(0, 0, 0, 1);  label.string=@"親愛的，你好嗎？";  label.stringFont=18.0;  [self.view addSubview:label];  [label updateLabel];}