iphone 开发中 拨打电话等的操作

//电话,这个方法在打完电话后回原程序
    NSString *strPhone = [NSString stringWithFormat:@"telprompt://1383838438"];
    //邮件
    NSString *strEmail = [NSString stringWithFormat:@"mailto://1383838438@xx.com"];
    //网站
    NSString *strWebSite = [NSString stringWithFormat:@"http://www.1383838438.com"];
    //短信
    NSString *strSMS = [NSString stringWithFormat:@"sms://1383838438"];

//用下面方法  将上面的strXXX替代下面strPhone就可以了

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:strPhone]];