#pragma mark - feedback- (void)sendFeedBackMail{        MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];    picker.mailComposeDelegate = self;    [picker setSubject:@"subjbect"];    picker.navigationBar.tintColor = [UIColor colorWithRed:kScreenR/255.0                                                     green:kScreenG/255.0                                                      blue:kScreenB/255.0                                                     alpha:0.5];    NSArray *toRecipients = [NSArray arrayWithObject:@"xx@xx.com"];    [picker setToRecipients:toRecipients];    NSString *emailBody = [NSString                           stringWithFormat:@"SystemVersion: %@ \n AppVersion: %@ \n 反馈信息:\n",                                           [[UIDevice currentDevice] systemVersion],                           [[[NSBundle mainBundle] infoDictionary]                            objectForKey:@"CFBundleShortVersionString"]];    [picker setMessageBody:emailBody isHTML:NO];    [self presentModalViewController:picker animated:NO];}#pragma mark - MFMailComposeViewControllerDelegate- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error{    NSString *title = @"邮件发送提醒";    NSString *msg;    switch (result){        case MFMailComposeResultCancelled:            msg = @"邮件已被取消";            break;        case MFMailComposeResultSaved:            msg = @"邮件保存成功";            [self alertWithTitle:title msg:msg];            break;        case MFMailComposeResultSent:            msg = @"邮件发送成功";            [self alertWithTitle:title msg:msg];            break;        case MFMailComposeResultFailed:            msg =@"邮件发送失败";            [self alertWithTitle:title msg:msg];            break;        }          [self dismissModalViewControllerAnimated:YES];    }- (void) alertWithTitle: (NSString *)_title_ msg: (NSString *)msg{    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:_title_                                                    message:msg                                                   delegate:nil                                          cancelButtonTitle:@"好"                                          otherButtonTitles:nil];    [alert show];}