问题描述

苹果的UIActivityViewController

应用中用到 UIActivityViewController 。

使用代码：

    NSString *postText = @""My Text"";    NSArray *activityItems = @[postText];    UIActivityViewController *activityController =    [[UIActivityViewController alloc]     initWithActivityItems:activityItems applicationActivities:nil];    activityController.excludedActivityTypes = [NSArray arrayWithObjects:UIActivityTypePrint UIActivityTypeCopyToPasteboard UIActivityTypeAssignToContact UIActivityTypeSaveToCameraRoll nil];    [self presentViewController:activityController                       animated:YES completion:nil];

运行正常从UIActivityViewController打开邮件的时候，也会显示出需要的内容。

现在我要在数据库中执行一些动作，条件是在post或者邮件发送成功之后。

应该怎么做？

解决方案

[activityController setCompletionHandler:^(NSString *act BOOL done)             {                 NSLog(@""act type %@""act);                 NSString *ServiceMsg = nil;                 if ( [act isEqualToString:UIActivityTypeMail] )           ServiceMsg = @""Mail sent"";                 if ( [act isEqualToString:UIActivityTypePostToTwitter] )  ServiceMsg = @""Post on twitter ok!"";                 if ( [act isEqualToString:UIActivityTypePostToFacebook] ) ServiceMsg = @""Post on facebook ok!"";                 if ( done )                 {                     UIAlertView *Alert = [[UIAlertView alloc] initWithTitle:ServiceMsg message:@"""" delegate:nil cancelButtonTitle:@""ok"" otherButtonTitles:nil];                     [Alert show];                     [Alert release];                 }                 else                 {                      // didn't succeed.                  }             }];

用完成处理程序的‘done’参数来判断是否完成。