IOS 开发，调用打电话，发短信，打开网址

//调用系统的拨号

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://18681866019"]];

//调用系统自带mail

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"mailto://admin@hzlzh.com"]];

//调用系统 SMS

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"sms://800888"]];

//调系统自带 浏览器 safari

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://www.hzlzh.com"]];

调用phone可以传递号码，调用SMS 只能设定号码，不能初始化SMS内容。
若需要传递内容可以做如下操作：

加入：MessageUI.framework
 
#import <MessageUI/MFMessageComposeViewController.h>
 
实现代理：MFMessageComposeViewControllerDelegate
 
 
 
调用sendSMS函数
//内容，收件人列表
- (void)sendSMS:(NSString *)bodyOfMessage recipientList:(NSArray *)recipients
{
 
    MFMessageComposeViewController *controller = [[[MFMessageComposeViewController alloc] init] autorelease];
 
    if([MFMessageComposeViewController canSendText])
 
    {
 
        controller.body = bodyOfMessage;   
 
        controller.recipients = recipients;
 
        controller.messageComposeDelegate = self;
 
        [self presentModalViewController:controller animated:YES];
 
    }   
 
}
 
// 处理发送完的响应结果- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result{  [self dismissModalViewControllerAnimated:YES];   if (result == MessageComposeResultCancelled)    NSLog(@"Message cancelled")  else if (result == MessageComposeResultSent)    NSLog(@"Message sent")    else     NSLog(@"Message failed")  }
 
 
发送邮件的为：
导入#import <MessageUI/MFMailComposeViewController.h>
实现代理：MFMailComposeViewControllerDelegate
 
//发送邮件
-(void)sendMail:(NSString *)subject content:(NSString *)content{
 
    MFMailComposeViewController *controller = [[[MFMailComposeViewController alloc] init] autorelease];
 
    if([MFMailComposeViewController canSendMail])
 
    {
 
        [controller setSubject:subject];
 
        [controller setMessageBody:content isHTML:NO];
 
        controller.mailComposeDelegate = self;
 
        [self presentModalViewController:controller animated:YES];
 
    }    
}
 
//邮件完成处理
-(void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error{
 
    [self dismissModalViewControllerAnimated:YES];
 
    if (result == MessageComposeResultCancelled)
        NSLog(@"Message cancelled");
    else if (result == MessageComposeResultSent)
        NSLog(@"Message sent"); 
    else 
        NSLog(@"Message failed");  
 
}
 

默认发送短信的界面为英文的，解决办法为：
在.xib 中的Localization添加一組chinese就ok了