调用iPhone的地图、电话、邮件、短信及内容

-(IBAction)openMaps {
    // Where is Apple on the map anyway?
    NSString* addressText = @"1 Infinite Loop, Cupertino, CA 95014";
    // URL encode the spaces
    addressText =  [addressText stringByAddingPercentEscapesUsingEncoding: NSASCIIStringEncoding];   
    NSString* urlText = [NSString stringWithFormat:@"http://maps.google.com/maps?q=%@", addressText];
    // lets throw this text on the log so we can view the url in the event we have an issue
    NSLog(urlText);
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlText]];
}
-(IBAction)openEmail {
    // Fire off an email to apple support
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"mailto://devprograms@apple.com"]];
}
-(IBAction)openPhone {
    // Call Google 411
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://8004664411"]];
}
-(IBAction)openSms {
    // Text to Google SMS
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"sms://466453"]];
}
-(IBAction)openBrowser {
    // Lanuch any iPhone developers fav site
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://itunesconnect.apple.com"]];
}
 

//自动填写短信内容

MFMessageComposeViewController *picker = [[MFMessageComposeViewController alloc] init];
picker.messageComposeDelegate = self;
picker.recipients = [NSArray arrayWithObject:@"48151623"]; 
picker.body = @"Body text.";
[self presentModalViewController:picker animated:YES];
[picker release];