【代碼筆記】把<br!>換成\n，br

【代碼筆記】把<br!>換成\n，br

代碼：

- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view.        //把<br!>換成\n    NSString *string=@"123<br!>456<br!>789";    NSString *newStr=[string stringByReplacingOccurrencesOfString:@"<br!>" withString:@"\n"];    NSString *newNewStr=[newStr stringByReplacingOccurrencesOfString:@"\n" withString:@"<br!>"];        UILabel *label=[[UILabel alloc]initWithFrame:CGRectMake(10, 100, 100, 200)];    label.backgroundColor=[UIColor redColor];    label.text=newNewStr;    //下面這個代碼很重要，很重要的    label.numberOfLines=0;    [self.view addSubview:label];}