//拨打电话  
- (void)callPhone:(NSString *)phoneNumber  
{  
    //phoneNumber = "18369......"  
    NSMutableString * str=[[NSMutableString alloc] initWithFormat:@"tel:%@",phoneNumber];  
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:str]];  
}  

//拨打电话  
- (void)callPhone:(NSString *)phoneNumber  
{  
    //phoneNumber = "18369......"  
    NSMutableString * str=[[NSMutableString alloc] initWithFormat:@"tel:%@",phoneNumber];  
    UIWebView * callWebview = [[UIWebView alloc] init];  
    [callWebview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:str]]];  
    [self.view addSubview:callWebview];  
}