短信，电话，邮件，提示框

+ (void)alert:(NSString *)msg {     UIAlertView *alertView = [[[UIAlertView alloc] initWithTitle:msg message:@"" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil] autorelease];     [alertView showWithBackground]; } + (void) makeCall:(NSString *)phoneNumber {     if ([DeviceDetection isIPodTouch]){         [UIUtils alert:kCallNotSupportOnIPod];         return;     }          NSString* numberAfterClear = [UIUtils cleanPhoneNumber:phoneNumber];              NSURL *phoneNumberURL = [NSURL URLWithString:[NSString stringWithFormat:@"tel:%@", numberAfterClear]];     //NSURL *phoneNumberURL = [NSURL URLWithString:[NSString stringWithFormat:@"atel:%@", numberAfterClear]];     NSLog(@"make call, URL=%@", phoneNumberURL);          [[UIApplication sharedApplication] openURL:phoneNumberURL];     } + (void) sendSms:(NSString *)phoneNumber {     if ([DeviceDetection isIPodTouch]){         [UIUtils alert:kSmsNotSupportOnIPod];         return;     }          NSString* numberAfterClear = [UIUtils cleanPhoneNumber:phoneNumber];          NSURL *phoneNumberURL = [NSURL URLWithString:[NSString stringWithFormat:@"sms:%@", numberAfterClear]];     NSLog(@"send sms, URL=%@", phoneNumberURL);     [[UIApplication sharedApplication] openURL:phoneNumberURL];     } + (void) sendEmail:(NSString *)phoneNumber {     NSURL *phoneNumberURL = [NSURL URLWithString:[NSString stringWithFormat:@"mailto:%@", phoneNumber]];     NSLog(@"send sms, URL=%@", phoneNumberURL);     [[UIApplication sharedApplication] openURL:phoneNumberURL];     } + (void) sendEmail:(NSString *)to cc:(NSString*)cc subject:(NSString*)subject body:(NSString*)body {     NSString* str = [NSString stringWithFormat:@"mailto:%@?cc=%@&subject=%@&body=%@",                      to, cc, subject, body];     str = [str stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];          [[UIApplication sharedApplication] openURL:[NSURL URLWithString:str]];      }